Q1. A calorimeter of water equivalent 20 gm contains 1030 gm of water. In it, a paddle wheel is made to rotate by means of two weights each weighing 10 kg falling a distance of 80 metres. Find the rise in temperature of the water, assuming g = 980 cm/sec2.
Ans. Potential energy in the raised position for both the weights
If the rise in temperature be θ, then the heat gained by the calorimeter and its contents is 1,050 θ.
Q2. A calorimeter of copper (specific heat 0.1) weighs ...