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Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth, she generates 60 J/kg worth of heat. What is the temperature increase? The mass of tissues warmed is only 0.100 kg, mostly in the palms and fingers, with c = 3500 J/kg 0C.

0.750 0C


0.257 0C


0.120 0C


0.171 0C

User Youssof
by
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1 Answer

7 votes
  • Q=mc∆T

Put values from question

  • 60=0.1(3500)∆T
  • 60=350∆T
  • ∆T=6/35
  • ∆T=0.171°C
User Chris Jackson
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