# All Questions

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### Cylinder rolling down an incline in a vacuum

Say you set up an experiment with an inclined plane, and a cylinder rolling down the plane. Let's also let the experiment happen in a vacuum, such that there is no air friction. However, let there be ...
42 views

### How the ladder will slip if the wall and ground were to be smooth?

If I have a situation like this Where my blue thing is wall and the yellow thing is the ground. If both were to be smooth then they will exert a contact force only normal to them which I have ...
82 views

### In quantum mechanics, which concept caters for light rays?

If photon wavefunctions are omnidirectional and don't have a definite size, how comes those from the Sun don't all collapse on Mercury and some do actually reach Earth ? I understand that ...
2k views

### If an object moving in a circle experiences centripetal force, then doesn't it also experience centrifugal force, because of Newton's third law?

When an object moves in a circle, there's an acceleration towards the center of the circle, the centripetal acceleration, which also gives us the centrifugal force (since $F = ma$ is the equation for ...
17 views

### How to go about solving this question? [on hold]

This question is from first order circuit and under the heading of source free RL circuit (https://i.stack.imgur.com/SY1L6.jpg)
26 views

### When assembly of atoms is influenced by EM wave only few of them get excited not all? Why?

In laser when assembly of atoms is influenced by em wave, only few of the atoms get excited not all? why it happens
60 views

### Does shining a neutron beam with Xrays/photons of pair production potential > 1.022MeV accelerate neutron decay? [on hold]

Confirmed experimental data is the looked after answer. Pure, simple , straight forward. edit: beamed or bottled/cold neutrons, either works.
37 views