People who have not studied physics sometimes question whether the horizontal and vertical motion of a projectile really are independent. Does this lab give you evidence to support this concept?

Iagree c would be the answer

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

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.