The table lists the values of the electrical force and the gravitational force between two protons. how do the electrical force and the gravitational force compare? the electrical force is 1.2 × 1036 times greater than the gravitational force, and both forces are attractive. the electrical force is 1.2 × 1036 times greater than the gravitational force, but only the gravitational force is attractive. the electrical force is 8.0 × 10–37 times greater than the gravitational force, and both forces are attractive. the electrical force is 8.0 × 10–37 times greater than the gravitational force, but only the gravitational force is attractive.

The electrical force between two protons is given by:

where
is the Coulomb's constant
is the proton charge
r is the separation between the two protons

The gravitational force between the two protons is given by:

where
is the gravitational constant
is the proton mass
r is the separation between the two protons

If we divide the electric force by the gravitational force, we get


which means that the electric force between the two protons is  times greater than the gravitational force.

Moreover, the two protons have same electric charge, and the electrostatic force between two same-sign charges is repulsive, while the gravitational force is always attractive: therefore, the correct answer is
The electrical force is 1.2 × 1036 times greater than the gravitational force, but only the gravitational force is attractive.

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