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A refrigerator with a coefficient of performance of 4.5 absorbs 125 J of heat from its 5.00 0C interior per cycle.  How much work does it take per cycle to move this heat to a 20.0 0C exterior region?

A heat engine absorbs 350 J of heat from a 365 0C high temperature source and expels 225 J of heat to a 20.0 0C low temperature source per cycle.  What is the maximum possible efficiency of the engine?

A heat engine absorbs 350 J of heat from a 365 0C high temperature source and expels 225 J of heat to a 20.0 0C low temperature source per cycle.  What is the work per cycle done by the engine?

Different racial and ethnic groups are still spatially separated in almost every community in the United States is an example of 

In general, public opposition to feminism is most likely to be directed at:

Many Arab Americans face _________________________ especially after 9/11

______________ of race is a more sociological way of understanding racial categories. 

Read carefully, a system in which those who are the most deserving will rise to the top and the rest may sink to the bottom is called:

Shared culture, which may include heritage, language, religion, etc is called

Sex and gender are interchangeable terms.