[" the two charge if the velocity becomes "(1)/(sqrt(3))" times of the projected vele "],[" moment is (Assume gravity to be absent) "],[qquad v]

In the diagram shown the charge +Q is fixed. Another charge +2q and mass M is projected from a distance R from the fixed charge. Minimum separtion between the two charge if the velocity becomes 1/sqrt3 time of the projected velocity, at this moment is (Assume gravity to be absent)

In the diagram shown the charge +Q is fixed. Another charge +2q and mass M is projected from a distance R from the fixed charge. Minimum separtion between the two charge if the velocity becomes 1/sqrt3 time of the projected velocity, at this moment is (Assume gravity to be absent)

A ball is projected horizontally. After 3s from projection its velocity becomes 1.25 times of the velocity of projection. Its velocity of projection is

A ball is projected horizontally. After 3s from projection its velocity becomes 1.25 times of the velocity of projection. Its velocity of projection is

A ball is projected horizontally. After 3s from projection its velocity becomes 1.25 times of the velocity of projection. Its velocity of projection is

When the temperature of an ideal gas is increased by 600 K , the velocity of sound in the gas becomes sqrt(3) times the initial velocity in it. The initial temperature of the gas is

When the relative velocity of two cars v_(A) = v_(B) becomes zero ?