May 2011
Beginner
492 pages
14h 16m
English
Content preview from Heat and Thermodynamics
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Solved Problems
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
= 2 ×10,000 × 980 × 8,000 dyne cm
If the rise in temperature be θ, then the heat gained by the calorimeter and its contents is 1,050 θ.
So,
Q2. A calorimeter of copper (specific heat 0.1) weighs ...
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