When a Ball weighing 20 g was cooled from 40 to 30 degrees, 46 J of heat came out. What material is the ball made of?
| July 9, 2021 | education
Data: m (mass of the taken ball) = 20 g (in SI m = 0.02 kg); t0 (initial temperature of the ball) = 40 ºС; t (final temperature) = 30 ºС; Q (heat lost by the ball) = 46 J.
To determine the material of the ball, we calculate its specific heat: Q = C * m * (t0 – t), whence C = Q / (m * (t0 – t)).
Calculation: C = 46 / (0.02 * (40 – 30)) = 230 J / (kg * K).
Answer: The taken ball was made of tin.
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