One consequence of the third law of thermodynamics is that

Answer;

Heat engines have efficiencies less than 100%

One consequence of the third law of thermodynamics is that Heat engines have efficiencies less than 100%.

Explanation;Thermodynamics involves the study of how heat or thermal energy is transformed or converted to other forms of energy.According to the third law of thermodynamics the entropy of all crystalline solids that are perfect is zero at absolute temperature. therefore as the temperature of a system moves towards absolute zero then its entropy will move to zero which will be a constant, for pure perfect crystalline solids.Heat engines convert heat energy or thermal energy to mechanical energy. Heat engines have efficiencies less than 100%, because some heat energy is not converted to work.  Efficiency of a heat engine depends on the absolute temperature at which the eat enters.

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