Heat will never of itself flow from a cold object to a hot object.

Heat can be made to flow from cold to hot by

No object has ever reached absolute zero and no object ever will.

For a heat engine to do mechanical work, heat must flow from a high temperature to a low temperature.

Many heat engines are able to convert all heat input into mehcanical energy output.

Calculate the ideal efficiency of a steam turbine that has a hot reservoir of 315 K and a condenser temperature of 217 K.

No heat engine can have an ideal efficiency of 100%.

When using the formula for Carnot efficiency, temperature must be in

If you wanted to increase the efficiency of a heat engine which of the following would you have to increase?

What determines the ideal efficiency of a heat engine?

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