Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a total of 11 rubs a distance of 7.50 cm each and with a frictional force averaging 71.3 N, what is the temperature increase? The mass of tissue warmed is only 0.100 kg, mostly in the palms and fingers. The specific heat of the tissue is 3500 J / (kg · °C).
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