0.20kg hocky puck initally travilling 5.0 m/s is pushed on ice by hocky stick with a constant force of 7.0N over a distance of 8.0m friction is negligible determine the final veloctiy of the hocky puele

Ibelieve the answer is either b or c, but i'm leaning more towards c.hope my answer has you : )

Answer the above statement is ( false );

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.