If two soap bubbles of different radii are connected by a tube, then ____________.

When a metal wire is stretched by a load, the fractional change in its volume ΔV/V is proportional to ________________.

In a streamline flow ______________.

A solid floats in a liquid in a partially dipped position ______________.

Bernoulli theorem is based on conservation of _____________.

A satellite is orbiting the earth close to its surface. A particle is to be projected from the satellite to just escape from the earth the escape speed from the earth is V_e its speed with respect to the satellite________________.

A body is suspended from a spring balance kept in a satellite the reading of the balance is W₁ when the satellite goes in an orbit of radius R and is W₂ when it goes in an orbit of radius 2R

Let V & E be gravitational potential & gravitational field at a distance r from the centre of a uniform solid sphere, consider the 2 statements
(A) the plot of V against r is discontinuous
(B) the plot of E against r is discontinuous

Starting from the centre of be each having radius R, the variation of g is shown by _____________.

A body of mass m falls from earth's surface at a height equal to twice the radius (R) each. Then the change in P.E of body will be

A rocket is fired from the earth. The body is projected the distance between the earth of the moon is r & the mass of the earth is 81 times the mass of the moon. The gravitational force on the rocket will be zero, when its from the moon is ______________.

Two practicals of equal mass m go round a circle of radius R under the action of their mutual gravitational attraction the speed of each particle is ___________.

Acceleration to Kepler's second law the radius vector of a planet sweeps out equal areas in equal intervals of fire. The law is consequence of conservations of _______________.

The work done by Sun on Earth in one year will be

The kinetic energy of the satellite orbiting around the Earth is

An object of mass 10 kg is hanging on a spring scale which is attached to the roof of a lift. If the lift is in free fall, the reading in the spring scale is

The work done by the Sun’s gravitational force on the Earth is

The gravitational potential energy of the Moon with respect to Earth is

A planet moving along an elliptical orbit is closest to the Sun at distance r₁ and farthest away at a distance of r₂. If v₁ and v₂ are linear speeds at these points respectively. Then the ratio \({v_1\over v_2}\) is

The linear momentum and position vector of the planet is perpendicular to each other at