1.According to the second law of thermodynamics:a.Heat energy cannot be completely converted to workb.Work cannot be completely converted to heat energyc.For all cyclic processes we have dQT<0\displaystyle\frac{dQ}{T} < 0TdQ<0d.The reason all heat engine efficiencies are less than 100%100\%100% is friction, which is unavoidableLogin to continueOnly logged in users canattempt or see the solution.
