Question

Soal IPA kelas 7

Tolong di bantu ya kakk, terimakasih orang baikkk!!

*pakai cara yaa​

Answer 1

a. Menentukan pertambahan panjang

[tex] \begin{aligned} \Delta \ell &= \ell_0\:\alpha\: \Delta T \\ &= \rm (3\: m)(0{,}000012\:/\degree C)(90\degree C) \\ &=\rm (270\: m)(0{,}000012) \\ &= 0{,}00324\text{ m}\end{aligned} [/tex]

b. Menentukan panjang besi setelah dipanaskan

[tex] \begin{aligned} \ell_\text{t} &= \ell_0+\Delta \ell \\ &= \rm 3\: m + 0{,}00324\:m \\ &= 3{,}00324\: \text{m}\end{aligned} [/tex]