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?

Name: 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?
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The Answer of 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?

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