A pool (billiards) plastic ball (Ф55 mm) was accidentally dropped in boiling water at 99°C. The density of the plastic is 1020 kg/m3 and its specific heat is 3. 4 kJ/(kg °C). The ball was initially at 20°C. Determine: a) The amount of energy transferred (heat transfer, in kJ), between the ball and the boiling water by the time the average temperature of the ball rises to 80°C. b) The amount of entropy generation during this heat transfer process (in kJ/K).
A pool (billiards) plastic ball (Ф55 mm) was accidentally dropped in boiling water at 99°C. The density of the plastic is 1020 kg/m3 and its specific heat is 3. 4 kJ/(kg °C). The ball was initially at 20°C. Determine: a) The amount of energy transferred (heat transfer, in kJ), between the ball and the boiling water by the time the average temperature of the ball rises to 80°C. b) The amount of entropy generation during this heat transfer process (in kJ/K).
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A pool (billiards) plastic ball (Ф55 mm) was accidentally dropped in boiling water at 99°C. The
density of the plastic is 1020 kg/m3 and its specific heat is 3. 4 kJ/(kg °C). The ball was initially at
20°C. Determine:
a) The amount of energy transferred (heat transfer, in kJ), between the ball and the boiling
water by the time the average temperature of the ball rises to 80°C.
b) The amount of entropy generation during this heat transfer process (in kJ/K).
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