## Work

Jesse Kuehn 1B
Posts: 40
Joined: Wed Nov 14, 2018 12:23 am

### Work

How can you tell if the work is positive or negative with respect to a given system?

Posts: 37
Joined: Mon Apr 23, 2018 3:00 am

### Re: Work

If work is done on a system, the value is positive. If the system is doing work, the value is negative.

Megan_Ervin_1F
Posts: 78
Joined: Fri Sep 28, 2018 12:18 am

### Re: Work

Why is work not a state property?

Rachel-Weisz3C
Posts: 66
Joined: Fri Sep 28, 2018 12:23 am

### Re: Work

Work is more complex than a state property. Work is dependent on the path used to get to its current state, which is the opposite of the definition of a state property which only depends on the state of the system.

Danielle_Gallandt3I
Posts: 70
Joined: Fri Sep 28, 2018 12:24 am

### Re: Work

Work is a type of energy transfer, so if work is being done TO as system the system is being transferred energy so it will be a positive value. If work is being done BY a system then energy is being transferred out of a system so it will be a negative value

JiangJC Dis2K
Posts: 72
Joined: Fri Oct 12, 2018 12:16 am

### Re: Work

Lavelle gave a great example in class. If you are pumping a tire, you are putting work into the system (given that the tire/pump is the system). Therefore the work for the surroundings is negative because you are losing energy. But the work for the system is positive because it is having the work done to it.

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