The gravitational force between two objects is proportional to the product of the masses of the objects.

Answer : The gravitational force between two objects is directly proportional to the product of the masses of the objects.

Explanation :

We know that the gravitational force is given by :

........ (1)

where,

G is the universal gravitational constant.

are the masses of two objects.

r is the distance between them.

So, from equation (1) it is clear that :

The gravitational force between two objects is directly proportional to the product of their masses.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.