A clay ball with a mass of 0.48 kg strikes another 0.48 kg clay ball at rest, and the two balls stick together. The final velocity of the balls is 2.5 m/s north. What was the first ball's initial velocity? 1 list vO

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If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.