Question

Soal fisika tentang suhu dan kalori nomor 3,9, dan 2 yang uraian

Answer 1

∆L = Lo. alfa. ∆T
0,2% =100%. 25. 10^-6. ∆T
8. 10^-5 = 10^-6. (T2-10)
80 = T2-10
T2 = 90°C

m. c. ∆T = m. c. ∆T
75. (x-0) = 50. (100-x)
3x = 200-2x
5x = 200
x = 40°C

Lt = Lo (1+alfa.∆T)
= 1. (1+1,2.10^-5.(610-360))
= 1. (1+1,2.10^-5.250)
= 1. (1+0,003)
= 1,003 m