Question

Solve the following problem.

What is the specific heat of metal if 50 cal of heat is needed to raise 6 kg of the metal from 20°C to 62 °C?

Answer 1

Given: Q = 50 cal, m = 6 kg, ΔT = 62 - 20 = 42 °C.

To find: Specific heat (s)

Formula: Q = ms ΔT

Calculation: From formula,

s = `"Q"/("m" Delta"T") = 50/(6 xx 42) = 0.198` cal/kg °C

Specific heat of metal is copper 0.198 cal/kg °C.