Dominoes standing in a row what are far if the first one is chapter the others how does the law of conservation of energy describe this Elastic potential energy causes the first domino to tip the energy used to tip the first domino changes potential energy to kinetic energy there is actually no energy and the Dominos each Domino creates its own energy

The answer is b hope this

The correct choice is c

Answerboth technicians (a) and (b);

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.