The value of g on be earth surface is 980 cm/. Its value at a height of 64 km from the earth surface is....cm5^-2

A body weights 700 g wt on the surface of earth How much it weight on the surface of planet whose mass is 1/7 and radius is half that of the earth

in a sine wave, position of different particles at time t =0 is sbown in figure: The equation for this wave travelling along the positive x - direction can be

Aspherical planet far out in space has mas Mo and diameter Do. A particle of  falling near the surface of this planet will experience an acceleration due to gravity which is equal to

If then

We have used rules of indices and different formulae of differentiation to solve the question. When we find the derivative w.r.t to some variable we take another variable as consta.

The time period of a simple pendulum on a freely moving artificial satellite is

The radius of the earth is 6400 km and  g=. In order that a body of 5 kg weights zero at the equator, the angular speed of the earth is =……rad/sec

A transverse wave is represented by . For what value of its wavelength will the wave velocity be equal to the maximum velocity of the particle taking part in the wave propagation?

If R is the radius of the earth and g the acceleration due to gravity on the earth's surface, the mean density of the earth is =……

If. two almost identical waves having frequencies and produced one after the other superposes then the time interval to obtain a beat of maxirmum intensity is .......

As shown in figure, two pulses in a string having center to center distance of 8 cm are travelling abng mutually opposite direction. If the speed of both the pulse is s, then after 2s, the energy of these pulses will be…………

As we go from the equator to the poles, the value of g…..

The gravitational force between two point masses  and  at separation r is given by F= The constant  K…..

Two point masses A and B having masses in the ratio 4:3 are seprated by a distance of 1m. When another point mass c of mass M is placed in between A and B the forces A and C is 1/3rd of the force between b and C, Then the distance C form  is...m

Which of the following statement about the gravitational constant is true

Three equal masses of mkg each are plced the vertices of an equilateral triangle PQR and a mass of 2 m kg  is placed at the centroid 0 of the triangle which is at a distance of $\sqrt{2}$ m  from each of vertices of triangle. The force in newton. acting on the mass 2 m is …….