To increase the temperature of a body weighing 0.05 kg by 200 ° C, 4 kJ of the amount of heat is spent.

To increase the temperature of a body weighing 0.05 kg by 200 ° C, 4 kJ of the amount of heat is spent. What substance is the body made of?

Initial data: m (body weight) = 0.05 kg; Δt (change in body temperature) = 200 ºС; Q (the amount of heat that is spent on increasing body temperature) = 4 kJ = 4 * 10 ^ 3 J.

The specific heat capacity of the substance from which the body is made is determined from the formula: Q = C * m * Δt, whence C = Q / (m * Δt).

Let’s make a calculation: C = 4 * 10 ^ 3 / (0.05 * 200) = 400 J / (kg * K).

This specific heat value corresponds to zinc, copper and alloys based on copper and zinc (brass).