Roboguru

Sebuah plat perunggu () pada suhu 0°C mempunyai uk...

Sebuah plat perunggu (begin mathsize 14px style alpha equals 1 comma 8 cross times 10 to the power of negative 5 end exponent space degree straight C to the power of negative 1 end exponent end style) pada suhu 0°C mempunyai ukuran 40 cm begin mathsize 14px style cross times end style 20 cm. Jika plat dipanaskan dan suhunya menjadi 80°C, maka luas plat bertambah sebesar …space 

  1. begin mathsize 14px style 0 comma 576 cross times 10 to the power of negative 4 end exponent space straight m squared end style undefined 

  2. begin mathsize 14px style 1 comma 152 cross times 10 to the power of negative 4 end exponent space straight m squared end style  undefined 

  3. begin mathsize 14px style 2 comma 304 cross times 10 to the power of negative 4 end exponent space straight m squared end style  undefined 

  4. begin mathsize 14px style 3 comma 456 cross times 10 to the power of negative 4 end exponent space straight m squared end style undefined 

  5. begin mathsize 14px style 4 comma 608 cross times 10 to the power of negative 4 end exponent space straight m squared end style space 

Jawaban:

Diketahui:

begin mathsize 14px style alpha equals 1 comma 8 cross times 10 to the power of negative 5 end exponent space degree straight C to the power of negative 1 end exponent T subscript 1 equals 0 space degree straight C A equals 0 comma 4 cross times 0 comma 2 equals 0 comma 08 space straight m squared T subscript 2 equals 80 space degree straight C  Persamaan space pemuaian space luas  capital delta A equals A beta open parentheses T subscript 2 minus T subscript 1 close parentheses capital delta A equals A 2 alpha open parentheses T subscript 2 minus T subscript 1 close parentheses capital delta A equals 0 comma 08 open parentheses 2 open parentheses 1 comma 8 cross times 10 to the power of negative 5 end exponent close parentheses open parentheses 80 minus 0 close parentheses close parentheses bold italic capital delta bold italic A bold equals bold 2 bold comma bold 304 bold cross times bold 10 to the power of bold minus bold 4 end exponent bold space bold m to the power of bold 2 end style 

Jadi, jawaban yang tepat adalah Cundefined 

0

Ruangguru

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ikuti Kami

©2021 Ruangguru. All Rights Reserved