why does not contain heat transfer? please educate me.Chestermiller said:
Because work is ##P\Delta V##. What has this got to do with the heat transfer?Anyway, if you had gotten the signs correct in your equation, you would have gotten the right answer. What's with those absolute value signs?r12214001 said:
TKS for replyChestermiller said:
What does TKS mean? Who says work can’t be converted to heat?r12214001 said:
Internal energy is the sum of all the kinetic and potential energies of the molecules within a system. It includes the energy associated with the motion of particles, their position in space, and any interactions between them.
The internal energy of a system can be calculated by adding up the contributions from all the molecules within the system. This can be done using the formula U = ∑(½mv² + U), where U is the potential energy and m and v are the mass and velocity of each molecule.
The internal energy of a system can be affected by several factors including temperature, pressure, volume, and the number of particles in the system. It can also be influenced by the type of molecules present and any chemical reactions or phase changes that occur.
Calculating internal energy is important in understanding the thermodynamic behavior of a system. It can help determine the amount of heat transferred, the work done, and the changes in temperature within a system.
Internal energy is typically measured in joules (J) in the SI system. However, it can also be expressed in other units such as calories (cal) or electron volts (eV), depending on the context and the scale of the system being studied.