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astraxan [27]
3 years ago
5

Five hundred joules of heat are added to a closed system. The initial internal energy of the system is 87 J, and the final inter

nal energy is 134 J. How much work is being done by the system?
A) 221 J
B) 279 J
C) 366 J
D) 453 J
Physics
2 answers:
mina [271]3 years ago
8 0
The answer is D. i got all the other ones wrong ._.

timurjin [86]3 years ago
6 0
<h3><u>Answer;</u></h3>

453 Joules

<h3><u>Explanation;</u></h3>
  • The change in internal energy = Final energy -initial energy

       = 134 J - 87 J

          = 47 Joules

  • Energy added to the closed system is 500 joules
  • Work done = energy added to the system -Change in internal energy

                  = 500 Joules - 47 Joules

                   = 453 joules

The work done is therefore,<em><u> 453 joules.</u></em>


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