How can you tell when two objects, after being rubbed together, have each acquired an electric charge? How will the magnitude of the charge on each compare with one another? How about the sign of the charge on each?

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.

Answerit increases at a steady rate;

It is increased due to the doppler effect. (apex)

Ithink you got that right thicc queen