An Athlete Doing Push-Ups Performs 700 KJ of Work and Loses

question 3

Multiple Choice

An athlete doing push-ups performs 700 kJ of work and loses 450 kJ of heat. What is the change in the internal energy of the athlete?

• A)1150 kJ
• B)250 kJ
• C)-250 kJ
• D)-1150 kJ

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