Physics Can you please get me started

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In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. Determine the heat transferred between her body and surroundings during this event.
________ J

• Physics Can you please get me started -

Her only source of energy during this event was internal. She was not eating anything.
Therefore her loss of internal energy went to work done and to heat lost to the surroundings.

8.8 * 10^5 - 5.5 * 10^5 = 3.3 * 10^5 Joules

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