A point charge of `+3 xx10^(-6)` coulomb (C) is 12 cm apart from a second point chargeof `- 1.5 xx 10^(-6) C`. Calculate the force of attraction between them .

Two bodies of masses 1 kg and 6 xx 10^(24) kg are placed with their centres 6.38 xx 10^(6)m apart. Calculate the force of attraction between the two masses. Also find the initial acceleration of the two masses. [Assume that no other forces act on them]

The mass of the Earth and Moon are 6xx10^(24) kg and 7.4xx10^(22) kg respectively. The distance between them is 3.84xx10^(5) km. Calculate the gravitational force of attraction between the two? G=6.7xx10^(-11)Nm^(2)//kg^(2)

The mass of the Earth and Moon are 6xx10^34 kg and 7.4xx10^22 kg respectively.The distance between them is 3.84xx10^5 km.Calculate the gravitational force of attraction between the two? G= 6.7xx10^11Nm^2//kg^2 .

Two equal magnetic poles placed 10 cm apart in air attract each other with a force of 0.4 xx 10^(-4)N . What should be the distance of separation between them so that the force of attraction of 0.6 xx 10^(-4)N ?

A point-charge A of 5xx10^(-9)C is placed in air. Calculate the work done while a point-charge B of 3xx10^(-9)C completes one revolution in a circle around the charge A. The radius of the circle is 6xx10^(2)m .

A force of 0.01 N is exerted on a charge of 1.2 xx 10^(-5) C at a certain point. The electric field at that point is