An inclined plane making an angle of `30^@` with the horizontal is placed in a uniform horizontal electric of 100 V `m^-1` as shown in the figure
A particle of mass 1 kg and charge 0.01 C is allowed to slide down from rest from a height of 1 m. If the coefficient of frictio nis 0.2, find the time it will take the particle to reach the bottom.

A ball is dropped from a height of 1 m.If coefficient of restitution between surface and ball is 0.6 ,the ball rebounds to a height of :

An inclined plane makes angle of 30^@ with horizontal.A solid sphere rolls down this inclined plane from rest without slipping .the acceleration of the sphere is :

When a body slides down from rest along a smooth inclined plane making anangle of 45^@ with the horizontal, it takes time T. when the same body slides down from rest along a rough inclined plane making the same angle and through the same distance, it is seen to take time pT, where p is some number greater than 1. Calculate the co-efficient of friction between the body and the rough plane.

Find the time taken by a particle of mass 10^-18 kg and carrying a charge 3.2xx10^-19C to fall through a distance of 8.0 m a uniform electric field of intensity 8xx10^2NC^-1 .

Find the time taken by a particle of mass 10^-18 kg and carrying a charge 3.2 xx 10^-19 C to fall through a distance of 8 m in a uniform electric field of intensity 8 xx 10^2 N C^-1

Find the time taken by a particle of mass 4xx10^-18 kg and carrying a charge 6.4xx10^-19 C to fall through a distance of 2m in a uniform electric field of intensity 4xx10^2 NC^-1 .