Recent content by Abhimessi10

Crystal acts as a diffraction grating.Although I don't know what that means.

Ok but friction opposes rotation or linear motion?

Homework Statement A force is applied tangentially to a rigid body on a horizontal surface.if it doesn't slip find the frictional force https://ibb.co/m9sMEU Homework EquationsThe Attempt at a Solution The solution tells us to take axis about the bottommost point in contacy with the surface...

The sin alpha component of velocity is only perpendicular and cos alpha would remain same?

Depends on the angle velocity makes with the magnetic field.On a general basis i can say circular-kinda motion.

Because of magnetic force acting as centripetal force?

I don't know to draw the path for particles entering at general angles.just the case when angle=90, 0, and in between.

Yeah i am.

Homework Statement A particle of charge -q and mass m enterd magnetic field B at A with speed v1 at an angle alpha and leaves the field at C with v2 at angle beta.Then, a)alpha=beta b)v1=v2 c)particle remains in the field for time t=(2m(pi-alpha))/qB d)All of these Please see image below...

Kq'/r1+kq/r2=0?

Equating potential of inner shell to 0?

KQ'/R1+kQ/R2 ?

Ok But how do i find charges when the inner shell is earthed?

It will not change?

KQ/R right?