## 4B.3

$\Delta U=q+w$

Maggie Doan 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:24 am

### 4B.3

The internal energy of a system increased by 982 J when it was supplied with 492 J of energy as heat.
How much work was done?
I got that work done was 490J but the book answer is 9.0 x 10^2J.

Kim Tran 1J
Posts: 62
Joined: Fri Sep 28, 2018 12:24 am

### Re: 4B.3

Your answer should be right. It should be +490 J or +4.90 x 10^2 J (3 sig figs).

The same question in the 6th edition has the answer listed as +4.90 x 10^2 J.

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