Thermodynamics-Net heat absorbed?

[Urth]

Can someone define what net heat absorbed is. I'm taking physics 1 right now, and am not sure exactly what it is. We just learned the first law of thermodynamics, and one of the questions on the homework is asking us to find the net heat absorbed in an isometric process. I just have no idea what that means...is it just like what Q is, since W=0? I just used the equations for Q, being nCvdeltaT, but I'm not sure.

Any help would be appreciated.

 

[OlderDan]

Can someone define what net heat absorbed is. I'm taking physics 1 right now, and am not sure exactly what it is. We just learned the first law of thermodynamics, and one of the questions on the homework is asking us to find the net heat absorbed in an isometric process. I just have no idea what that means...is it just like what Q is, since W=0? I just used the equations for Q, being nCvdeltaT, but I'm not sure.

Any help would be appreciated.

It is Q. Heat is the name given to energy transfer to or from an object when it is in contact with something else at a different temperature. You can make an object warmer (raise its temperature and internal energy) by adding heat, or by doing work.

 

[kyle8921]

Sure, I would be happy to provide some clarification on the concept of net heat absorbed. Net heat absorbed refers to the overall amount of heat energy that is transferred into a system during a process. This can be calculated by considering the difference between the heat energy transferred into the system and the heat energy transferred out of the system.

In the context of the first law of thermodynamics, which states that energy cannot be created or destroyed but can only be transferred or converted from one form to another, the net heat absorbed is an important factor to consider in understanding the changes in a system's internal energy.

In an isometric process, which is a process that occurs at a constant volume, the work done by the system is equal to zero, as you correctly stated. This means that the change in internal energy is solely determined by the heat energy transferred into the system. Therefore, in this case, the net heat absorbed is equal to the change in internal energy.

To calculate the net heat absorbed in an isometric process, you can use the equation Q = nCvΔT, where Q is the net heat absorbed, n is the number of moles of the gas, Cv is the molar specific heat at constant volume, and ΔT is the change in temperature. This equation takes into account the amount of heat energy required to raise the temperature of the gas at a constant volume.

I hope this helps to clarify the concept of net heat absorbed. If you have any further questions, please don't hesitate to ask. Good luck with your studies in physics!