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HNQ
3:57 PM
2
Q: Why thus happen that rubbing a comb with dry hair attract paper but if left comb unused and try this experiment again after a time dont attract now

Suresh Chandra PalIn childhood we were made to do an activity with comb and paper pieces to understand electrostatic force. But I notice after rubbing comb in hair , it attract paper pieces very well but after some time again I tried(not rubbing again) with same comb , it is able to attract only few of them, it s...

 
HNQ
4:22 PM
1
Q: If our solar system and galaxy are moving why do we not see differences in speed of light depending on direction?

Gensys LTDMay be a silly and simple question, but I've been wondering if: The speed of light is constant, and When we're moving in the same direction (where both the emitter and the receiver move with the light direction) we would be making it take more time for the light to reach the other end. Conversel...

2
Q: A question regarding commutators in quantum mechanics

user11937I propose the following thought experiment: Suppose we have a beam of identically prepared electrons that is splits into two. The first goes through detector A that detects the $x+y$ where $x$ is the coordinate along x direction and $y$ is the coordinate along the $y$ direction. Then, we measure ...

 
 
5 hours later…
HNQ
8:53 PM
3
Q: Perpendicular Horizontal Velocities in a Projectile?

Vinay Two balls A and B are both thrown with horizontal initial velocities of 6 m/s and 8 m/s from the edge of a vertical cliff. Their initial velocities are perpendicular and the points where they hit the ground are 120 meters apart. Find the height of the cliff. The answer given is height of clif...

 

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