Question

Aluminium dengan massa o,5 kg mula mula suhunya 30 derajat celcius, jika aluminium tsb menerima kalor sebesar 45000 joule, dan kalor jenis aluminium 900 j/kg drjt celcius, suhu akhir aluminium?

Answer 1

M = 0,5 kg
T1 = 30°C
Q = 45000 J
c = 900 J/kg°C

Q = m . c . ΔT
45000 = 0,5 . 900 . (T2 - 30)
45000 = 450 . (T2 - 30)
T2 - 30 = 45000 : 450
T2 - 30 = 100
T2 = 100 + 30
T2 = 130°C