Which of the following BEST describes what temperature measures? A. how many particles are in a substance B. how much heat energy is inside a substance C. how large the kinetic energy of the substance is, on average D. how rapidly the particles in a substance are vibrating, on average

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.