jocelyncruzpere1 jocelyncruzpere1
  • 04-05-2018
  • Physics
contestada

The internal energy of a system increases by 36 joules. The system does work using 17 joules. What amount of heat was added to this system? joules\

Respuesta :

jushmk
jushmk jushmk
  • 14-05-2018
General internal energy expression:

Uf = (Ui-W) + Q

Where Uf = Final internal energy, Ui = Initial internal energy, W = Work done, Q = Heat added

But,
Uf -Ui = ΔU = 36 J, W = 17 J. Then,
ΔU = -W +Q => Q = ΔU+W = 36+17 = 53 J

Therefore, heat added to the system is 53 Joules
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laurenholmes1of3
laurenholmes1of3 laurenholmes1of3
  • 24-01-2019

53 j have a nice day

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