dave asked in Science & MathematicsPhysics · 1 month ago

physics question help?

What is the change in internal energy of a system which does 7.46 x 10^3 J of work as 8.91 x 10^4 J of heat transfer occurs into the system, and 4.73 x 10^4 J of heat transfer occurs out of the system to the environment?

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  • 1 month ago

    delta-U = Q - W

    = (8.91 - 4.73) x 10^4 J - (7.46 x 10^3) J

    = 4.18 x 10^4 J - 7.46 x 10^3 J

    = 3.43 x 10^4 J.

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