Solve the following examples / numerical problems:
Two spheres of uniform density have masses 10 kg and 40 kg . The distance between the centres of the spheres is 200 m. Find the gravitational force between them.

If the distance between the two bodies is tripled, what will be the Gravitational force between them

Solve the following examples / numerical problems: The mass of the earth is 6xx10^24 kg. The distance between the earth and the sun is 1.5xx10^11m. If the gravitational force between the two is 3.5xx 10^22 N, what is the mass of the Sun ? ( use G =6.7xx 10^-11 Nm^-2kg^-2)

The masses of two spheres are 10 kg and 20 kg respectively. If the distance between their centres is 100 m , find the magnitude of the gravitational force betweem them.

Solve the following examples / numerical problems: The masses of the earth and the 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 two masses is doubled, then the gravitational attraction between them will be

Solve the following examples / numerical problems: Mahendra and virat are sitting at a distance of 1 meter from each other. Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them ? G = 6.67 xx 10^-11 N-m^2/kg^2.

Solve the following examples / numerical problems: How many calories of heat will be absorbed when 3 kg of ice at 0⁰ C melts ?

If the distance between two masses is doubled, gravitational attraction between them

Solve the following examples/ numerical problems. A bulb of 40 w is connected across a source of 220 v. Find the resistance of the bulb.