Melalui artikel ini, kamu akan belajar mengenai prinsip dan hukum termodinamika. Seperti apa sih termodinamika itu? Yuk, simak penjelasannya!
—
Kalau lagi musim hujan gini, enaknya minum yang hangat-hangat, nih! Siapa di sini yang suka minum minuman hangat? Nah, untuk menjaga agar minuman tetap hangat, biasanya kita akan menyimpan minuman tersebut di dalam termos, kan? Pernah nggak sih kepikiran, kok bisa ya, minuman kita tetap hangat saat disimpan dalam termos?
Termos menerapkan prinsip termodinamika (Sumber: giphy.com)
Jadi, termos yang biasa kita pakai di rumah itu menerapkan salah satu prinsip fisika yang disebut termodinamika, guys! Apa sih, termodinamika itu?
Termodinamika adalah cabang ilmu fisika yang mempelajari hukum-hukum tentang hubungan kalor dan usaha. Termodinamika sendiri berasal dari dua kata, yaitu thermos yang artinya panas dan dynamic yang artinya perubahan.
Dalam ilmu termodinamika, ada yang disebut dengan Sistem, Lingkungan, dan Batasan Sistem. Wah, apa itu?
Sistem dan Lingkungan
Sistem adalah satu kesatuan yang sedang diamati. Sedangkan Lingkungan adalah segala sesuatu yang berada di luar sistem. Kemudian, ada juga yang disebut dengan Batasan Sistem (Boundary System) yakni sesuatu yang membatasi antara Sistem dan Lingkungan.
Untuk lebih memahami Sistem, Lingkungan, dan Batasan Sistem, kita ambil contoh termos tadi, ya. Minuman hangat yang ada dalam termos merupakan Sistem. Lalu, segala sesuatu di luar termos merupakan Lingkungan. Nah, terus Batasan Sistemnya yang mana, nih? Batasan Sistemnya adalah termos yang mewadahi minuman tersebut.
Nah, Sistem sendiri terbagi menjadi dua macam, nih. Ada Sistem Terbuka dan Sistem Tertutup.
Sistem Terbuka
Sistem Terbuka adalah sistem yang melibatkan pertukaran massa dan kalor antara sistem dan lingkungan. Contohnya adalah air di sungai. Air di sungai dapat mengalir bebas dan berinteraksi dengan lingkungan tanpa adanya pembatas (Batasan Sistem), sehingga dapat terjadi pertukaran massa dan kalor antara air sungai (Sistem) dengan segala sesuatu yang ada di sekitarnya (Lingkungan). Contoh lainnya yaitu api unggun.
Air di sungai adalah contoh sistem terbuka (Sumber: loggerindo.com)
Sistem Tertutup
Sistem Tertutup adalah sistem yang tidak melibatkan pertukaran massa dan kalor antara sistem dan lingkungan. Sistem Tertutup sendiri ada dua macam nih, yaitu Sistem Tertutup dan Sistem Tertutup Terisolasi. Bedanya apa tuh, Sistem Tertutup yang biasa dan yang terisolasi? Bedanya, Sistem Tertutup Terisolasi itu Batasan Sistemnya lebih kuat dalam membatasi antara Sistem dan Lingkungan daripada Sistem Tertutup yang biasa.
Kotak makan adalah contoh sistem tertutup (Sumber: alicdn.com)
Contohnya, kalau Sistem Tertutup itu ada kotak makan dan panci yang ditutup. Sedangkan Sistem Tertutup Terisolasi contohnya adalah…. hayoo ada yang bisa tebak contohnya apa? Yap! Contohnya adalah termos.
Termos merupakan Sistem Tertutup Terisolasi karena termos bisa membatasi Sistem dan Lingkungan dengan sangat baik, bahkan lebih baik daripada Sistem Tertutup biasa, sehingga tidak terjadi pertukaran massa dan kalor antara Sistem dan Lingkungan. Kalau kita perhatikan, termos juga dibuat dari bahan yang tebal dan tutupnya pun dibuat sangat rapat dan kedap udara. Oleh karena itu, termos bisa menjaga suhu minuman yang kita simpan di dalamnya tetap hangat.
Baca juga: Macam-Macam Perpindahan Kalor
Sekarang, kita bahas tentang Hukum Termodinamika, yuk! Hukum termodinamika itu ada tiga, yaitu Hukum 0 Termodinamika, Hukum I Termodinamika, dan Hukum II Termodinamika. Kita bahas satu per satu, ya!
Hukum 0 Termodinamika
Hukum 0 Termodinamika berbunyi:
“Jika dua buah sistem mempunyai kesetimbangan termal dengan sistem ke-3, maka ketiganya akan mempunyai kesetimbangan termal satu sama lain.”
Apa sih, kesetimbangan termal itu?
Kesetimbangan termal adalah kondisi di mana suhu dari sistem-sistem yang terlibat adalah sama atau tidak ada kalor yang mengalir. Jadi, jika ada benda A dan benda B yang dikatakan mencapai kesetimbangan termal, artinya benda A dan benda B tersebut memiliki suhu yang sama dan tidak ada kalor yang mengalir di antara keduanya.
Kalor sendiri mengalir dari sistem bersuhu tinggi ke sistem bersuhu rendah. Oleh karena itu, jika suhu kedua sistem sama, maka kalor tidak akan mengalir di antara keduanya.
Contoh penerapan Hukum 0 Termodinamika dalam kehidupan sehari-hari adalah alat ukur suhu (termometer).
Lanjut ke pembahasan Hukum I Termodinamika, yuk!
Hukum I Termodinamika
Hukum I Termodinamika berbunyi:
“Dalam sebuah sistem tertutup, perubahan energi dalam sistem tersebut akan sama dengan banyaknya kalor yang masuk ke dalam sistem dikurangi usaha yang dilakukan oleh sistem tersebut.”
Secara matematis, Hukum I Termodinamika bisa ditulis ke dalam persamaan atau rumus seperti pada gambar berikut:
Dari persamaan atau rumus tersebut, kamu perlu mengetahui aturan nilai positif dan negatif, yakni sebagai berikut:
-
ΔU bertanda positif (+) jika sistem mengalami kenaikan suhu dan bertanda negatif (-) jika sistem mengalami penurunan suhu.
-
Q bertanda positif (+) jika sistem menyerap kalor dan bertanda negatif (-) jika sistem melepas kalor.
-
W bertanda positif (+) jika sistem melakukan usaha dan bertanda negatif (-) jika sistem menerima usaha.
Baca juga: Kenapa Suhu di Gunung Lebih Dingin?
Sekarang, lanjut ke pembahasan terakhir yaitu Hukum II Termodinamika.
Hukum II Termodinamika
Hukum II Termodinamika dibagi menjadi dua macam, yaitu Hukum II Termodinamika tentang Arah Aliran Kalor dan Hukum II Termodinamika tentang Entropi.
Hukum II Termodinamika tentang Arah Aliran Kalor berbunyi:
“Kalor mengalir secara spontan (alamiah) dari benda bersuhu tinggi ke benda bersuhu rendah, dan tidak mengalir secara spontan dalam arah kebalikannya.”
Sedangkan Hukum II Termodinamika tentang Entropi berbunyi:
“Dalam sebuah sistem tertutup, setiap proses termodinamika akan menghasilkan peurbahan entropi lebih besar dari 0 untuk proses irreversible, dan perubahan entropi sama dengan 0 untuk proses reversible.”
Entropi itu maksudnya gimana, sih?
Entropi adalah besaran yang menggambarkan tingkat keacakan sistem. Semakin acak benda maka benda akan semakin homogen (sejenis) dan entropinya akan semakin besar. Kamu bisa perhatikan ilustrasi di atas untuk lebih memahami tentang entropi.
Secara spontan (alamiah), sistem akan selalu menuju homogen (menjadi lebih acak), sehingga entropi akan selalu semakin besar (perubahan entropi positif).
Selain itu, dalam termodinamika, ketika ada perbedaan suhu antara sistem yang terlibat, maka sistem akan selalu menuju suhu yang homogen (kesetimbangan termal).
Nah, itu tadi pembahasan tentang prinsip dan hukum termodinamika. Gimana? Sudah paham? Kalau masih bingung, kamu bisa menonton video penjelasan lengkapnya di ruangbelajar. Bisa diakses lewat ponsel maupun PC, lho! Dijamin kamu bakal langsung paham!
Sumber Gambar:
GIF ‘Termos’ [Daring]. Tautan: https://giphy.com/gifs/mate-yerba-kalmateh-TgOMsnpv9yR5h4IRWJ (Diakses: 20 Januari 2022)
Gambar ‘Sungai’ [Daring]. Tautan: https://www.loggerindo.com/images//aliran_air_sungai_water_level_station.jpg (Diakses: 20 Januari 2022)
Gambar ‘Kotak Makan’ [Daring]. Tautan: https://sc04.alicdn.com/kf/H97bdcfa5f6c449e49d1e91ad148614f6H.png (Diakses: 20 Januari 2022)
Artikel ini pertama kali ditulis oleh Tedy Rizkha Heryansyah dan telah diperbarui oleh Kenya Swawikanti pada 20 Januari 2022.
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<h1 class="content-title">
Belajar Prinsip dan Hukum Termodinamika dari Termos | Fisika Kelas 11 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/kenya-swawikanti" class="">Kenya Swawikanti</a> </p>
<p class="content-info"><span>January 20, 2022 • </span> <span>6 minutes read</span></p>
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<p style="text-align: center;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/hukum%20termodinamika.jpg" alt="hukum termodinamika" width="820" loading="lazy" style="width: 820px; margin-left: auto; margin-right: auto; display: block;"></p>
<blockquote>
<p style="text-align: center;"><em><span style="color: #000000;">Melalui artikel ini, kamu akan belajar mengenai prinsip dan hukum termodinamika. Seperti apa sih termodinamika itu? Yuk, simak penjelasannya!</span></em></p>
<p style="text-align: center;"><em><span style="color: #000000;">—</span></em></p>
</blockquote>
<p style="text-align: justify;"><span style="color: #000000;"><span id="more-3814"></span></span></p>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;"><span style="color: #000000;">Kalau lagi musim hujan gini, enaknya minum yang hangat-hangat, nih! Siapa di sini yang suka minum minuman hangat? Nah, untuk menjaga agar minuman tetap hangat, biasanya kita akan menyimpan minuman tersebut di dalam termos, kan? Pernah nggak sih kepikiran, kok bisa ya, minuman kita tetap hangat saat disimpan dalam termos?</span></p>
<p style="text-align: justify; font-weight: bold;"> </p>
<div class="hs-embed-wrapper" data-service="giphy" data-responsive="true" style="position: relative; overflow: hidden; width: 100%; height: auto; padding: 0px; max-width: 350px; max-height: 350px; min-width: 256px; display: block; margin: auto;">
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<div style="position: relative; overflow: hidden; max-width: 100%; padding-bottom: 100%; margin: 0px;"><iframe src="https://giphy.com/embed/TgOMsnpv9yR5h4IRWJ" width="480" height="480" frameborder="0" class="giphy-embed" allowfullscreen="" style="position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; border: none;"></iframe></div>
<p><a href="https://giphy.com/gifs/mate-yerba-kalmateh-TgOMsnpv9yR5h4IRWJ">via GIPHY</a></p>
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<p> </p>
<p style="font-weight: bold; text-align: center;"><em><span style="font-weight: normal;">Termos menerapkan prinsip termodinamika (Sumber: giphy.com)</span></em></p>
<p style="text-align: justify; font-weight: bold;"> </p>
<p style="text-align: justify;"><span style="color: #000000;">Jadi, termos yang biasa kita pakai di rumah itu menerapkan salah satu prinsip fisika yang disebut <span style="font-weight: bold;">termodinamika</span>, <em>guys</em>! Apa sih, termodinamika itu?</span></p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: bold;">Termodinamika adalah </span><span style="font-weight: normal;"><span style="font-weight: bold;">cabang ilmu fisika yang mempelajari hukum-hukum tentang hubungan kalor dan usaha</span>. </span></span><span style="background-color: transparent; color: #000000;">Termodinamika sendiri berasal dari dua kata, yaitu </span><em style="background-color: transparent; color: #000000;"><span style="font-weight: bold;">thermos</span> </em><span style="background-color: transparent; color: #000000;">yang artinya </span><span style="font-weight: bold;">panas</span><span style="background-color: transparent; color: #000000;"> dan </span><span style="font-weight: bold;"><em>dynamic</em></span><span style="background-color: transparent; color: #000000;"> yang artinya </span><span style="font-weight: bold;">perubahan</span><span style="background-color: transparent; color: #000000;">.</span></p>
<p style="text-align: justify;"><span style="color: #000000; background-color: transparent;">Dalam ilmu termodinamika, ada yang disebut dengan <span style="color: #2eb5c0;"><a href="/blog/tahukah-kamu-asal-terjadinya-energi" rel="noopener" style="color: #2eb5c0;"><span style="font-weight: bold;">Sistem</span></a></span>, <span style="font-weight: bold;">Lingkungan</span>, dan <span style="font-weight: bold;">Batasan Sistem</span>. Wah, apa itu?</span></p>
<p style="text-align: justify;"> </p>
<h2 style="text-align: justify; font-weight: bold; font-size: 20px;"><span style="color: #000000;">Sistem dan Lingkungan</span></h2>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: bold;">Sistem adalah</span> satu kesatuan yang sedang diamati. Sedangkan <span style="font-weight: bold;">Lingkungan adalah</span> segala sesuatu yang berada di luar sistem. Kemudian, ada juga yang disebut dengan <span style="font-weight: bold;">Batasan Sistem (<em>Boundary System</em>) </span><span style="font-weight: normal;">yakni sesuatu yang membatasi </span></span><span style="color: #000000; background-color: transparent;">antara Sistem dan Lingkungan.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Untuk lebih memahami Sistem, Lingkungan, dan Batasan Sistem, kita ambil contoh termos tadi, ya. <span style="font-weight: bold;">Minuman hangat</span> yang ada dalam termos merupakan <span style="font-weight: bold;">Sistem</span>. Lalu, <span style="font-weight: bold;">segala sesuatu di luar termos</span> merupakan <span style="font-weight: bold;">Lingkungan</span>. Nah, terus Batasan Sistemnya yang mana, nih? <span style="font-weight: bold;">Batasan Sistemnya </span><span style="font-weight: normal;">adalah</span><span style="font-weight: bold;"> termos</span> yang mewadahi minuman tersebut.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Nah, Sistem sendiri terbagi menjadi dua macam, nih. Ada <span style="font-weight: bold;">Sistem Terbuka</span> dan <span style="font-weight: bold;">Sistem Tertutup</span>.</span></p>
<p style="text-align: justify;"> </p>
<h3 style="text-align: justify; font-weight: bold; font-size: 16px;"><span style="color: #000000;">Sistem Terbuka</span></h3>
<p style="text-align: justify;"><span style="color: #000000;">Sistem Terbuka adalah sistem yang <span style="font-weight: bold;">melibatkan pertukaran massa dan kalor antara sistem dan lingkungan</span>. Contohnya adalah <span style="font-weight: bold;">air di sungai</span>. Air di sungai dapat mengalir bebas dan berinteraksi dengan lingkungan tanpa adanya pembatas (Batasan Sistem), sehingga dapat terjadi pertukaran massa dan kalor antara air sungai (Sistem) dengan segala sesuatu yang ada di sekitarnya (Lingkungan). Contoh lainnya yaitu api unggun.</span></p>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;"><span style="color: #000000;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/air%20di%20sungai%20adalah%20contoh%20sistem%20terbuka.jpg" alt="air di sungai adalah contoh sistem terbuka" width="600" loading="lazy" style="width: 600px; margin-left: auto; margin-right: auto; display: block;"></span></p>
<p style="text-align: center;"><em><span style="color: #000000;">Air di sungai adalah contoh sistem terbuka (Sumber: loggerindo.com)</span></em></p>
<p style="text-align: justify;"> </p>
<h3 style="text-align: justify; font-weight: bold; font-size: 16px;"><span style="color: #000000;">Sistem Tertutup</span></h3>
<p style="text-align: justify;"><span style="color: #000000;">Sistem Tertutup adalah sistem yang <span style="font-weight: bold;">tidak melibatkan pertukaran massa dan kalor antara sistem dan lingkungan</span>. Sistem Tertutup sendiri ada dua macam nih, yaitu <span style="font-weight: bold;">Sistem Tertutup</span> dan <span style="font-weight: bold;">Sistem Tertutup Terisolasi</span>. Bedanya apa tuh, Sistem Tertutup yang biasa dan yang terisolasi? Bedanya, Sistem Tertutup Terisolasi itu Batasan Sistemnya <span style="font-weight: bold;">lebih kuat</span> dalam membatasi antara Sistem dan Lingkungan daripada Sistem Tertutup yang biasa. </span></p>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: normal;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/kotak%20makan%20adalah%20contoh%20sistem%20tertutup.png" alt="kotak makan adalah contoh sistem tertutup" width="400" loading="lazy" style="width: 400px; margin-left: auto; margin-right: auto; display: block;"></span></span></p>
<p style="text-align: center;"><em><span style="color: #000000;"><span style="font-weight: normal;">Kotak makan adalah contoh sistem tertutup (Sumber: alicdn.com)</span></span></em></p>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: bold;">Contohnya</span>, kalau <span style="font-weight: bold;">Sistem Tertutup</span> itu ada <span style="font-weight: bold;">kotak makan</span> dan <span style="font-weight: bold;">panci yang ditutup</span>. Sedangkan <span style="font-weight: bold;">Sistem Tertutup Terisolasi</span> contohnya adalah…. <em>hayoo</em> ada yang bisa tebak contohnya apa? Yap! Contohnya adalah <span style="font-weight: bold;">termos</span><span style="font-weight: normal;">.</span></span></p>
<p style="text-align: justify;"><span style="color: #000000;">Termos merupakan Sistem Tertutup Terisolasi karena termos bisa membatasi Sistem dan Lingkungan dengan sangat baik, bahkan lebih baik daripada Sistem Tertutup biasa, sehingga <span style="font-weight: bold;">tidak terjadi pertukaran massa dan kalor antara Sistem dan Lingkungan</span>. Kalau kita perhatikan, termos juga dibuat dari <span style="font-weight: bold;">bahan yang tebal</span> dan tutupnya pun dibuat <span style="font-weight: bold;">sangat rapat dan kedap udara</span>. </span><span style="color: #000000;">Oleh karena itu, termos bisa menjaga suhu minuman yang kita simpan di dalamnya tetap hangat.</span></p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000;">Baca juga: <a href="/blog/perpindahan-kalor" rel="noopener">Macam-Macam Perpindahan Kalor</a></span></p>
<p style="text-align: justify;"><span style="color: #000000;">Sekarang, kita bahas tentang Hukum Termodinamika, yuk! Hukum termodinamika itu ada tiga, yaitu <span style="font-weight: bold;">Hukum 0 Termodinamika</span>, <span style="font-weight: bold;">Hukum I Termodinamika</span>, dan <span style="font-weight: bold;">Hukum II Termodinamika</span>. Kita bahas satu per satu, ya!</span></p>
<p style="text-align: justify;"> </p>
<h2 style="font-size: 20px;"><span style="color: #000000;">Hukum 0 Termodinamika</span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Hukum 0 Termodinamika berbunyi:</span></p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000;">“Jika dua buah sistem mempunyai kesetimbangan termal dengan sistem ke-3, maka ketiganya akan mempunyai kesetimbangan termal satu sama lain.”</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Apa sih, kesetimbangan termal itu? </span></p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: bold;">Kesetimbangan termal</span> adalah kondisi di mana <span style="font-weight: bold;">suhu dari sistem-sistem yang terlibat adalah sama </span><span style="font-weight: normal;">atau </span><span style="font-weight: bold;">tidak ada kalor yang mengalir</span>. Jadi, jika ada benda A dan benda B yang dikatakan mencapai kesetimbangan termal, artinya benda A dan benda B tersebut memiliki suhu yang sama dan tidak ada kalor yang mengalir di antara keduanya. </span></p>
<p style="text-align: justify;"><span style="color: #000000; background-color: transparent;"><a href="/blog/pengertian-kalor-dan-rumusnya" rel="noopener"><span style="font-weight: bold;"><span style="color: #2eb5c0;">Kalor</span></span></a> sendiri mengalir dari <span style="font-weight: bold;">sistem bersuhu tinggi ke sistem bersuhu rendah</span>. Oleh karena itu, jika suhu kedua sistem sama, maka kalor tidak akan mengalir di antara keduanya.</span></p>
<p style="text-align: justify; font-weight: bold;"> </p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000; font-weight: normal;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/hukum%200%20termodinamika.jpg" alt="hukum 0 termodinamika" width="600" loading="lazy" style="width: 600px; margin-left: auto; margin-right: auto; display: block;"></span></p>
<p style="text-align: justify; font-weight: bold;"> </p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000; font-weight: normal;">Contoh penerapan Hukum 0 Termodinamika dalam kehidupan sehari-hari adalah <span style="font-weight: bold;">alat ukur suhu (termometer)</span>.</span><span style="color: #000000;"></span></p>
<p style="text-align: justify;"><span style="color: #000000;">Lanjut ke pembahasan Hukum I Termodinamika, yuk!</span></p>
<p style="text-align: justify;"> </p>
<h2 style="font-size: 20px;"><span style="color: #000000;"><strong>Hukum I Termodinamika</strong></span></h2>
<p style="text-align: justify;"><span style="color: #000000;"><span>Hukum I Termodinamika berbunyi:</span></span></p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000;">“Dalam sebuah sistem tertutup, perubahan energi dalam sistem tersebut akan sama dengan banyaknya kalor yang masuk ke dalam sistem dikurangi usaha yang dilakukan oleh sistem tersebut.”</span></p>
<p style="text-align: justify;">Secara matematis, Hukum I Termodinamika bisa ditulis ke dalam persamaan atau rumus seperti pada gambar berikut:</p>
<p style="text-align: justify; font-weight: normal;"> </p>
<p style="text-align: justify; font-weight: normal;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/hukum%201%20termodinamika.jpg" alt="hukum 1 termodinamika" width="600" loading="lazy" style="width: 600px; margin-left: auto; margin-right: auto; display: block;"></p>
<p style="text-align: justify; font-weight: normal;"> </p>
<p style="text-align: justify; font-weight: normal;"><span style="color: #000000;">Dari persamaan atau rumus tersebut, kamu perlu mengetahui <span style="font-weight: bold;">aturan nilai positif dan negatif</span>, yakni sebagai berikut:</span></p>
<ul>
<li style="text-align: justify; font-weight: normal;"><strong style="color: #000000; background-color: transparent;">ΔU </strong><span style="color: #000000; background-color: transparent;">bertanda </span><strong style="color: #000000; background-color: transparent;">positif (+)</strong><span style="color: #000000; background-color: transparent;"> jika sistem mengalami </span><strong style="color: #000000; background-color: transparent;">kenaikan suhu </strong><span style="color: #000000; background-color: transparent;">dan bertanda </span><strong style="color: #000000; background-color: transparent;">negatif (-)</strong><span style="color: #000000; background-color: transparent;"> jika sistem mengalami </span><strong style="color: #000000; background-color: transparent;">penurunan suhu</strong><span style="color: #000000; background-color: transparent;">.</span><br /><span style="color: #000000; background-color: transparent;"></span></li>
<li style="text-align: justify; font-weight: normal;"><strong style="color: #000000; background-color: transparent;">Q</strong><span style="color: #000000; background-color: transparent;"> bertanda </span><strong style="color: #000000; background-color: transparent;">positif (+)</strong><span style="color: #000000; background-color: transparent;"> jika sistem </span><strong style="color: #000000; background-color: transparent;">menyerap kalor</strong><span style="color: #000000; background-color: transparent;"> dan bertanda </span><strong style="color: #000000; background-color: transparent;">negatif (-)</strong><span style="color: #000000; background-color: transparent;"> jika sistem </span><strong style="color: #000000; background-color: transparent;">melepas kalor</strong><span style="color: #000000; background-color: transparent;">.</span><br /><span style="color: #000000; background-color: transparent;"></span></li>
<li style="text-align: justify; font-weight: normal;"><strong style="color: #000000; background-color: transparent;">W</strong><span style="color: #000000; background-color: transparent;"> bertanda </span><strong style="color: #000000; background-color: transparent;">positif (+)</strong><span style="color: #000000; background-color: transparent;"> jika sistem </span><strong style="color: #000000; background-color: transparent;">melakukan usaha</strong><span style="color: #000000; background-color: transparent;"> dan bertanda </span><strong style="color: #000000; background-color: transparent;">negatif (-)</strong><span style="color: #000000; background-color: transparent;"> jika sistem </span><strong style="color: #000000; background-color: transparent;">menerima usaha</strong><span style="color: #000000; background-color: transparent;">.</span></li>
</ul>
<p style="font-weight: bold;"><span style="color: #000000;">Baca juga: <a href="/blog/gunung-dingin" rel="noopener">Kenapa Suhu di Gunung Lebih Dingin?</a></span></p>
<p><span style="color: #000000;">Sekarang, lanjut ke pembahasan terakhir yaitu Hukum II Termodinamika.</span></p>
<p> </p>
<h2><span style="color: #000000; font-size: 20px;"><strong>Hukum II Termodinamika</strong></span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Hukum II Termodinamika dibagi menjadi dua macam, yaitu Hukum II Termodinamika tentang <span style="font-weight: bold;">Arah Aliran Kalor</span> dan Hukum II Termodinamika tentang <span style="font-weight: bold;">Entropi</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Hukum II Termodinamika tentang Arah Aliran Kalor berbunyi:</span></p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000;">“Kalor mengalir secara spontan (alamiah) dari benda bersuhu tinggi ke benda bersuhu rendah, dan tidak mengalir secara spontan dalam arah kebalikannya.”</span><span style="color: #000000;"></span></p>
<p style="text-align: justify; font-weight: normal;"><span style="color: #000000;">Sedangkan Hukum II Termodinamika tentang Entropi berbunyi:</span></p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000;">“Dalam sebuah sistem tertutup, setiap proses termodinamika akan menghasilkan peurbahan entropi lebih besar dari 0 untuk proses <em>irreversible</em>, dan perubahan entropi sama dengan 0 untuk proses <em>reversible</em>.”</span></p>
<p style="text-align: justify; font-weight: normal;"> </p>
<p style="text-align: justify; font-weight: normal;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/hukum%202%20termodinamika.jpg" alt="hukum 2 termodinamika" width="600" loading="lazy" style="width: 600px; margin-left: auto; margin-right: auto; display: block;"></p>
<p style="text-align: justify; font-weight: normal;"> </p>
<p style="text-align: justify; font-weight: normal;"><span style="color: #000000;">Entropi itu maksudnya gimana, sih? </span></p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: bold;">Entropi adalah</span> besaran yang menggambarkan tingkat keacakan sistem. Semakin acak benda maka benda akan semakin homogen (sejenis) dan entropinya akan semakin besar. Kamu bisa perhatikan ilustrasi di atas untuk lebih memahami tentang entropi.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Secara spontan (alamiah), sistem akan <span style="font-weight: bold;">selalu menuju homogen</span> (menjadi lebih acak), sehingga <span style="font-weight: bold;">entropi akan selalu semakin besar</span> (perubahan entropi positif).</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Selain itu, dalam termodinamika, <span style="font-weight: bold;">ketika ada perbedaan <span style="color: #2eb5c0;"><a href="/blog/suhu" rel="noopener" style="color: #2eb5c0;">suhu</a></span></span> antara sistem yang terlibat, maka <span style="font-weight: bold;">sistem akan selalu menuju suhu yang homogen</span> (kesetimbangan termal).</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Nah, itu tadi pembahasan tentang prinsip dan hukum termodinamika. Gimana? Sudah paham? Kalau masih bingung, kamu bisa menonton video penjelasan lengkapnya di <a href="https://ruangguru.onelink.me/blPk/eaff0eb9" rel="noopener" target="_blank"><span style="font-weight: bold;">ruangbelajar</span></a>. Bisa diakses lewat ponsel maupun PC, lho! Dijamin kamu bakal langsung paham!</span></p>
<p style="text-align: justify;"><span style="color: #000000;"><a href="https://www.ruangguru.com/download-for-desktop" target="_blank" style="text-align: center;" class="rg-cta" rel="noopener"><img fetchpriority="high" decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/cta/f51e0d89-905d-477d-b7f8-546567f121d9.jpeg" width="800" height="195" alt="IDN CTA Blog ruangbelajar for desktop Ruangguru" /></a></span></p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000;">Sumber Gambar:</span></p>
<p style="text-align: left;"><span style="color: #000000;">GIF ‘Termos’ [Daring]. Tautan: https://giphy.com/gifs/mate-yerba-kalmateh-TgOMsnpv9yR5h4IRWJ </span><span style="color: #000000;">(Diakses: 20 Januari 2022)</span></p>
<p style="text-align: left;"><span style="color: #000000;">Gambar ‘Sungai’ [Daring]. Tautan: https://www.loggerindo.com/images//aliran_air_sungai_water_level_station.jpg (Diakses: 20 Januari 2022)</span></p>
<p style="text-align: left;"><span style="color: #000000;">Gambar ‘Kotak Makan’ [Daring]. Tautan: https://sc04.alicdn.com/kf/H97bdcfa5f6c449e49d1e91ad148614f6H.png (Diakses: 20 Januari 2022)</span></p>
<p style="text-align: justify;"> </p>
<p style="text-align: justify;"><span style="font-weight: bold;"><em><span style="color: #000000;">Artikel ini pertama kali ditulis oleh Tedy Rizkha Heryansyah dan telah diperbarui oleh Kenya Swawikanti pada 20 Januari 2022.</span></em></span><span style="color: #000000;"></span></p>
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<div class="col-lg-9">
<div class="row">
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Produk Ruangguru</p>
<ul type="none">
<li><a href="https://roboguru.ruangguru.com" target="_blank">Roboguru</a></li>
<li><a href="https://www.ruangguru.com/roboguruplus">Roboguru Plus</a></li>
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<li><a href="https://www.ruangguru.com/for-kids/kursus">Kursus for Kids</a></li>
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<li><a href="https://pengajar.ruangguru.com/">Ruangpengajar</a></li>
<li><a href="https://www.ruangguru.com/privat">Ruangguru Privat</a></li>
<li><a href="https://www.ruangpeduli.org/" target="_blank">Ruangpeduli</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Bantuan & Panduan</p>
<ul type="none">
<li><a href="https://www.ruangguru.com/company-credentials">Company Credentials</a></li>
<li><a href="https://www.ruangguru.com/beasiswa">Beasiswa Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/cicilan">Cicilan Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/promo">Promo Ruangguru</a></li>
<li><a href="https://ticketing.ruangguru.com/help?request_type_id=459" target="_blank">Vulnerability Report</a></li>
<li><a href="https://www.ruangguru.com/bantuan#layanan">Layanan Pengaduan</a></li>
<li><a href="https://www.ruangguru.com/terms-conditions">Syarat & Ketentuan</a></li>
<li><a href="https://www.ruangguru.com/privacy-policy">Kebijakan Privasi</a></li>
<li><a href="https://www.ruangguru.com/about-us">Tentang Kami</a></li>
<li><a href="https://www.ruangguru.com/contact-us">Kontak Kami</a></li>
<li><a href="https://www.ruangguru.com/press">Press Kit</a></li>
<li><a href="https://www.ruangguru.com/bantuan">Bantuan</a></li>
<li><a href="https://career.ruangguru.com/">Karier</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Produk Lainnya</p>
<ul type="none">
<li><a href="https://www.brainacademy.id/" target="_blank">Brain Academy</a></li>
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<li><a href="https://skillacademy.com/" target="_blank">Skill Academy</a></li>
<li><a href="https://www.ruangkerja.id/" target="_blank">Ruangkerja</a></li>
<li><a href="https://www.schoters.com/id/" target="_blank">Schoters</a></li>
<li><a href="https://www.kalananti.id/" target="_blank">Kalananti</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title"> Coba GRATIS Aplikasi Ruangguru</p>
<div class="download-list">
<ul>
<li>
<a target="_blank" rel="nofollow" href="https://apps.apple.com/id/app/ruangguru-solusi-belajar/id1099742206?l=id">
<img src="https://cdn-web-2.ruangguru.com/static/appstore.png" loading="lazy" alt="Button App Store Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://play.google.com/store/apps/details?id=com.ruangguru.livestudents&hl=in">
<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://appgallery.huawei.com/#/app/C102352375">
<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
</ul>
</div>
</nav>
</div>
</div>
</div>
</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
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</picture>
</a>
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<picture>
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</a>
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<picture>
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</a>
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<picture>
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</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>