Determine the net work done

In summary, the conversation discusses the net heat and work done by a gas on its surroundings for an entire cycle. The net heat added is 1200J and the net work is calculated using the values for Wab and Wca, which are -3315.4J and -2108.98J respectively. The conversation also mentions the moderation process for attachments.
  • #1
nrc_8706
70
0
Wbc=0 Wab=-3315.4J Wca=nRTLn(Va/Vc)=-2108.98

The net heat added to the gas for the entire cycle is 1200J. Determine the net work done by the gas on its surroundings for the entire cycle.


Don't you just add the works?
 

Attachments

  • 01-18-2006 05;29;34PM.JPG
    01-18-2006 05;29;34PM.JPG
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  • #2
why can't i see the attachments?
01-18-2006 05;29;34PM.JPG
 
  • #3
does anyone know how to do this?:confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused: :confused:
 
  • #4
nrc_8706 said:
why can't i see the attachments?
View attachment 6344

Because they have to be approved by a moderator. We've had people attach porn in the past, so every attachment goes through a moderation queue. I've just approved all your attachments.

Wab=-3315.4J Wca=nRTLn(Va/Vc)=-2108.98

Are you sure about that? ab is an expansion, while ca is a compression. [itex]\int p dV[/itex] has a different sign along each path.
 

1. What is net work?

Net work is the total amount of energy transferred to or from a system. It is calculated by multiplying the force applied to an object by the distance the object moves in the direction of the force.

2. How is net work related to kinetic energy?

Net work is directly related to kinetic energy. The work done on an object is equal to the change in kinetic energy of that object. This means that when net work is done on an object, its kinetic energy will either increase or decrease.

3. Can net work be negative?

Yes, net work can be negative. This occurs when the direction of the force applied is opposite to the direction of motion. In this case, the work done on the object will be negative, meaning that the object loses kinetic energy.

4. How is net work affected by the angle between force and displacement?

The angle between force and displacement affects the magnitude of net work. When the force and displacement are in the same direction, the net work will be at its maximum. As the angle between force and displacement increases, the net work will decrease, reaching zero when the force and displacement are perpendicular to each other.

5. What is the unit of measurement for net work?

The unit of measurement for net work is joules (J). This is the same unit used for energy and is equivalent to 1 Newton-meter. It can also be expressed in terms of other base units such as kilogram-meters squared per second squared (kg*m^2/s^2).

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