The radius of moon is `1.7 xx10^6m` and its mass is `7.35xx 10^22 kg`. What is the acceleration due to gravity on the surface of moon ? Given `G = 6.67 xx 10 ^-11Nm^2//kg^2`.

Two spheres of 1kg mass each are separated by 3 m. Calculate the gravitational force between then. Given G = 6.67 xx 10^ -11Nm^2//kg^2 .

The value of 'G' on the surface of earth is 6.67xx 10^- 11 Nm^2//kg^2 . What is its value on the surface of moon ?

A spaceship is stationed on Mars. How much energy must be expended on the spaceship to launch it out of the solar system ? Mass of the space ship = 1000 kg, mass of the sun = 2xx10^30 kg , mass of mars = 6.4xxl0^23 kg , radius of mars = 3395 km, radius of the orbit of mars = 2.28 x10^8 km , G = 6.67xx10^-11 N m^2 kg^-2 .

Find the mass of earth (Given the radius of earth R= 6.4 xx 10^6 m) .

The acceleration due to gravity on the surface of moon is 1.7 m s^-2 . What isthe time period of a simple pendulum on the surface of moon if itstime period on the surface of earth is 3.5 s? (gon the surface of earth is 9.8 m s6-2 )

The mass of an electron is 9.1 xx 10 ^(-31) kg . If its K. E. is 3. 0 xx 10 ^(-25) J, calculate its wavelength.

A wire stretched between two rigid supports vibrates in itsfundamental mode with a frequency of 45 Hz. The mass of the wire is 3.5 xx 10^-2 kg and itslinear mass density is 4.0 xx 10^-2 kg m^-1 . What is the speed of a transverse wave on the string

A rocket is fired vertically with a speed of 5 km s^-1 from the earth’s surface. How far from the earth does the rocket go before returning to the earth ? Mass of the earth = 6.0 xx 10^24 kg , mean radius of the earth = 6.4 xx 10^6 m , G = 6.67 xx 10^-11 N m^2kg^-2 .

Fill in the blanks by suitable conversion of units:- G = 6.67 xx 10^-11 N m^2 (kg)^-2 =…...(cm)^3 s^-2 g^-1 .