First slide

First law of thermodynamics

Question

A system is given 300 calories of heat and it does 600J of work how much does the internal energy of the system change in this process

Easy

A

654 Jouls
B

156.5 Jouls
C

- 300 Jouls
D

- 528.2 Jouls

Solution

$ΔU = Q - W = (300 \times 4 .18 - 600) J = 654 J$

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