The temperature of a copper sample weighing 100 g increased from 20 ° C to 60 ° C.

The temperature of a copper sample weighing 100 g increased from 20 ° C to 60 ° C. Find the amount of heat received by the sample.

1) The formula for the amount of heat:

Q = c * m * (t2 – t1),

where Q is the amount of heat,
m – body weight,
(t2 – t1) – the difference between the initial and final body temperatures,
c – specific heat capacity of the substance.

2) The specific heat capacity of copper is 390 J / (kg * gr.C)

3) 100 g = 0.1 kg

Q = 390 * 0.1 * (60 – 20) = 390 * 0.1 * 40 = 1560 J

Answer: the amount of heat received by the 1560 J sample.