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132,897 questions
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How far can you pee on the moon vs. mars?

Let's suppose you are at Elon Musk's Future Mars colony and you drank too much beer, how far can you pee on Mars if you can pee one meter on earth? If the next day you get on the shuttle to the ...
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How does thermal energy in a system do mechanical work?

Explain that a system with thermal energy has the capacity to do mechanical work. Also, in addition to this what are the differences between work and mechanical work?
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How to determine exchange particle of two-to-two process?

For the process, $e^+e^- \rightarrow e^+e^-$ I know that the exchange particle is a photon and for the process $\gamma\gamma \rightarrow e^+e^-$, the exchange particle would be an electron but I'm not ...
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Relative energy

Suppose a ball is travelling at 5km/h, person A is travelling at 2km/h and person B is travelling at 5km/h in the opposite direction. The ball is travelling at 3km/h relative to A and at 10km/h ...
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How was Maxwell able to derive velocity distribution?

Did he assume that their velocities follow some kind of statistical distribution and fit the parameters accordingly. Or did he mathematically prove it?
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European XFEL : TDS strutures

Can someone explain whats the difference between fill time, accelerator fill (Ta) time and cavity fill time(Tc)? Is fill time and acellerator fill time the same ?
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Bond Nature of a comound

How can we determine the type of Bond in LiBaPO4? can we find out the nature of bond through charge transfer values of these elements? if yes then how?
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Experiment interpretation. Dielectric polarization/triboelectricity/other?

My aim was to create a relatively strong electrostatic field to experiment with biological systems. So, I built a kind of "sandwich" made of a plate of aluminium surrounded by two 4mm plates of ...
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Ground state of two fermions coupled with one boson

I have an Hamiltonian of the form: \begin{align} \begin{aligned} H _ { 1 } & = f _ { 1 } \otimes b ^ { \dagger } + f _ { 1 } ^ { \dagger } \otimes b \\ H _ { 2 } & = f _ { 2 } \otimes b ^ { \...
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Molecular model of liquids

The macroscopic behavior of gasses and solids follow very intuitively from the description of matter as quasi-spherical molecules interacting with each other with attractive and repulsive forces. ...