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 20 rubs, at a distance of 7. 50 cm per rub, and with an average frictional force of 40. 0 N, what is the temperature increase? The mass of tissues warmed is only 0. 100 kg, mostly in the palms and fingers.
