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A system is provided 50J of heat and wor...

A system is provided `50J` of heat and work done on the system is `20J`. What is the change in the internal enegry?

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Verified by Experts

`q = 50J`
`w = +20J` (work done on the system)
`:. DeltaU = q +w = 50 +20 = 70J`
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