Calculate and compare the electrostatic and gravitational forces between two protons which are `10^-15` m apart. Value of `G = 6.674 xx 10^-11 Nm^2//kg^2` and mass of the proton is `1.67 xx 10^-27kg.

Calculate the de Broglie wavelength of proton, if its speed is 10^7 cm//s . Given: mass of proton = 1.67 xx 10^-27 kg .

Calculate the gravitational force due to the Earth on Mahendra,if mass of Earth is 6xx10^24 kg,Radius is 6.4xx10^6m,g=9.77m//s^2 and mass of Mahendra is 75 kg .

The mean radius of a planet is 6.67xx10^(3) km. The acceleration due to gravity on its surface is 10 m//s^(2) . If G = 6.67xx10^(-11)Nm^(2)//kg^(2) , then the mass of the planet will be [R=6.67xx10^(6)m]

Solve the following examples / numerical problems: Find the magnitude of the gravitational force between the Sun and the earth.( Mass of the Sun =2xx10^30 kg, mass of the earth = 6xx10^24 kg and the distance between the centres of the Sun and the earth = 1.5xx 10^11 m, G =6.67 xx10^-11 N-m^2 /kg^2 ).

Radius of earth is equal to 6 xx 10^6 . Acceleration due to gravity is equal to 9.8 m/s^2 . Gravitational constant G is equal to 6.67 xx 10^-11 Nm^2 kg^-2 . Then mass of the earth is

Calculate mass of the Earth from given data, Acceleration due to gravity g = 9.81m//s^2 Radius of the Earth R_E = 6.37xx10^6 m G = 6.67xx10^(-11) N m^2 //kg^2

Gravitational force between two objects separated by 20 cm is 1.0xx10^(-8) N . If total mass of the two objects is 5.0 kg, then the mass of the objects in kg, are

The gravitational force of attraction between Earth and Venus, if the distance between them is 2.5xx10^(7) km, is [mass of Venus = 4.8xx1^(24) kg, mass of the Earth =6xx10^(24) kg

Calculate the value of acceleration due to gravity on the surface of Mars if the radius of Mars = 3.4 xx 10^3 km and its mass is 6.4 xx 10^23 kg.