The masses of the earth and moon are 6 xx 10^(24) kg and 7.4 xx 10^(22) kg , respectively , The distance between them is 3.84 xx 10^(5) km. Calculate the gravitational force of attraction between the two. Use G = 6.7 xx 10^(-11) N.m^(2) kg^(-2)
If the distance between the sun and the earth is increased by four times then the attraction between the two will
If the distance between the sun and the earth is increased by three times, then attraction between two will
The distance between the electron and proton in hydrogen atom is 5.3xx10^(-11) m. Determine the magnitude of the ratio of electrostatic and gravitational force between them. Given m_(e)=9.1xx10^(-31) kg, m_(p)=1.67xx10^(-27) kg, e=1.6xx10^(-19) C " and " G=6.67xx10^(-11) Nm^(2) kg^(2) .
