Fill in the blanks in the following paragraph to correctly identify four principles of the second law of thermodynamics. (1 point)
Heat naturally flows from an object that has a temperature to an object that has a temperature. Heat can be made to flow in the reverse direction if is done. A machine can never have an efficiency of . This means that heat energy can never be fully converted into energy.
b. Describe entropy. What is the natural tendency of the entropy of a system?
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