Carnot engine working between a source temperature of t2
Carnot engine working between a source temperature of T2 and sink temperature of T1 has efficiency of 25%. if the sink temperature is reduced by 20 degrees Celsius the efficiency is increased to 30%. find the source and sink temperature
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when a 2.75kg fan having blades 18.5 cm long is turned off, its angular speed decreases uniformly from 10 rad to 6.3 rad/s in 5 sec. Through what angle does it turn
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