Question

Soal IPA kelas 7

Tolong di bantu ya kakk, terima kasih orang baikkk.

*pakai cara yaa​

Answer 1

Menentukan panjang mula-mula kawat tembaga:

[tex]\small \begin{aligned} \Delta \ell = \ell_0\:\alpha \:\Delta T \;\Rightarrow \; \ell_0 &= \frac{ \Delta \ell}{\alpha\: \Delta T } \\ &= \frac{ 8{,}5 \text{ m}}{ (17\times 10^{-6} \:/\degree\rm C)(60 \degree\rm C)} \\ &= \frac{8{,}5 \text{ m} }{102\times 10^{-5} } \\ &= 0{,}08\bar 3 \times 10^5 \text{ m} \\ &= 8333{,}\bar 3 \text{ m}\end{aligned} [/tex]