An airplane travelling due west experiences a uniform acceleration due to a wind direction south. eventually, its velocity is directed south may be directed south is directed south-west is directed west

Letter a, because when there are unlike charges they will always attract to each other.

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.

Ibelieve the answer is d. densityhope my answer has you : )