Question

Fill in the blanks in the following paragraph to correctly identify four principles of the second law of thermodynamics.

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.

Answer 1

Hi and welcome to Questioncove!

I can't give you direct answers about what to put in each blank, but I can tell you enough about thermodynamics for you to find the answers.

So, heat naturally flows from areas with high temperature to areas of low temperature, although heat can flow from areas of low temperature to areas of high temperature if work is done. There is always some energy lost whenever energy is converted from one form to another or transferred from one object to another, so it is impossible for any system to have 100% efficiency. In other words, heat energy can't be fully converted into kinetic energy or other forms of usable energy.

I hope my paraphrasing of the facts will help you figure out how to fill in the blanks!