Question

a gas in a closed container is heated with 10j of energy causing the lid of the container to rise 2m with3N forces .what is the total change in energy of the system ​

Answer 1

Answer:

4J

Explanation:

For this problem, use the first law of thermodynamics. The change in energy equals the increase in heat energy minus the work done.

∆U = Q - W

We are not given a value for work, but we can solve for it using the force and distance. Work is the product of force and displacement.

W= F∆x

W= 3N * 2m

W= 6J

Now that we have the value of work done and the value for heat added, we can solve for the total change in energy.

∆U = Q -W

∆U = 10J - 6J

∆U = 4J