you are golfing and strike the ball at 40m/s at an angle of 30 degrees. it hits a tree 75m away. how long is the ball in the air before hitting the tree, how high is the ball when it hits the tree and what are the horizontal and vertical components of the balls velocity when it hits?

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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.

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