Motion in a Straight Line — Physics STD 11 Science — Question

Backward dragging force of viscosity acting on a spherical body of radius r moving with velocity v through a fluid of viscosity n is equal to _________________.

A child swinging on a swing in sitting position stands up then the time period of the swing will _________.

The velocity of efflux of a liquid through an orifice in the bottom of the tank depends on _______________ and ______________.

Newton's law of gravity is not true for particles located distances less than ................ .

The coefficient of areal expansion of substance is equal to its coefficient of linear expansion ____________

A ball thrown vertically upwards from the earth's surface. After reaching a height, it returns to the earth after some time, then its distance will be ................ and displacement will be ................ .

Average distance covered by a molecule between two successive collisions is called .