Space between two concentric conducting spheres of radii a and b (b>a) is filled the medium of resistivity .The resistance between two spheres is?

A ball is thrown upward with an initial velocity from the surface of the earth.The motion of the ball is affected by a drag force equal to (where m is mass of the ball, v is the instantaneous velocity and is constant).Time taken by the ball to rise to its zenith is?

A uniform rectangular thin sheet ABCD of mass M has a length a and breadth b as shown in a figure.If the shaded portion HBGO is cut off then what will be the co-ordinate of the centre of mass of remaining portion.

What is a escape velocity and its Expression.Explain?

The acceleration due to gravity on the planet A is 9 times of the acceleration due to gravity on the planet B. A man jumps to a height of 2 m from the surface of planet A. What is height of jump of same person on planet B

What is Work - Energy Principle? Please explain.

The moment of inertia of a uniform cylinder of length l and radius R about its perpendicular bisector is I. What is the ratio of l/R such the moment of inertia is minimum?

Calculate empirical formula weight from the given values and molecular weight from freezing point depression?