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Your fitness tracker tells you that you have delivered 140 kJ of work during your workout....

Your fitness tracker tells you that you have delivered 140 kJ of work during your workout. The tracker also shows that you have burned 140 food calories. How much energy (in kJ) has your body lost to the surroundings in the form of heat? Give your answer to two significant figures. Make sure to include the appropriate sign.

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t T40710°J 140 Cal 140x 10 - 140 x 4-186 + Answer 139.414 KJ

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