# Questions tagged [dissipation]

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### How do charges lose electrical potential energy when going through a resistor?

I can understand that the charges need to do work against the resistance - which transfers energy to forms such as light, heat, etcetera - using the electrostatic force provided by the battery ...
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### Can a water vortex (whirlpool) be used to efficiently store energy?

Either a large, constrained cylinder of water or a large volume of open water (perhaps in the ocean) could be persuaded to form a vortex by pumping energy in. The body of water would be acting as a ...
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### When you have engine at idle and turn your car, where does the kinetic energy go?

When you turn the front wheels to the right for example, your car will tend to continue in its original forward direction. However, there is friction between the wheel and the ground that prevents it ...
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### What happens to the heat generated in an irreversible process?

I know that a reversible process does more work than an irreversible process and that extra work is turned into heat. But what does that heat do? Does it increase the temperature?
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### Why is there no friction energy?

Can anyone briefly explain to me why is there no term for frictional energy when they often referred to work done by friction instead? Thank you
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### Is motion a form of energy?

I think I am running into a semantics difficulty. Loosely speaking when energy is converted from potential to kinetic is the motion a form of energy? Let us use an example: A ball drops to ...
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### Can torsional force be used to harvest gravity?

I am curious if an idea I have will work or if it is the result of a lack of understanding of the physics involved. I am expecting to be disproved. Please excuse any lack of understanding on my part ...
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### The Role of Friction in The Lagrangian

I'm pretty new to physics (I am presently taking AP Physics 1 though I am far ahead of that in math) and I was reading this paper that found the equations of motion for Atwood's machine using ...
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### How does an electric dipole lose its energy while aligning with a uniform electric field?

How does an electric dipole lose its energy while aligning with a uniform electric field--through heat or light?
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### Friction during pure rotation

I have already read Role of friction during pure rolling What is the direction of the friction force on a rolling ball? Rolling resistance and static friction and many others But I still have the ...
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### What is wrong with my perpetual motion machine model? [closed]

I know that perpetual motion machines are not possible and I want to know the reason why will this machine not work. The Car B has a magnetic bulge on top of it and Car B can only move forward. It ...
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### Landauers Principle Derivation

I read about Landauer's principle and was wondering about the implications from it's original derivation. Landauer derived his principle straight foward from the second law, but I see people favoring ...
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### Non-conservative forces in nature [duplicate]

We know that gravitational, electrical and magnetic forces are conservative in nature. We also know that friction is fundamentally Electromagnetic in nature. How is it then a non-conservative force?
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### Potential Energy of Damped Oscillator

In the case of a simple harmonic oscillator we know that the total energy of the system is given as $$E=\frac{1}{2}m\dot{x}^2+\frac{1}{2}kx^2$$ where the potential is $$U=\frac{1}{2}kx^2$$ I read ...