What gravitational force do the two protons in the helium nucleus exert on each other? Their separation is approximately 1.0 {\rm fm}.

G*Mp*Me/distance^2

What gravitational force do the two protons in the helium nucleus exert on each other? Their separation is approximately 1.0

To calculate the gravitational force between two objects, you can use Newton's Law of Universal Gravitation. The formula is as follows:

F = G * (m1 * m2) / r^2

Where:
F is the gravitational force between the objects,
G is the gravitational constant (6.674 × 10^(-11) N*m^2/kg^2),
m1 and m2 are the masses of the two objects, and
r is the distance between the two objects' centers of mass.

In this case, the two protons in the helium nucleus are the objects in question. For simplicity, we can consider the mass of each proton as approximately 1.67 x 10^(-27) kg. The separation between them is given as 1.0 fm (femtometer), which is equivalent to 1.0 x 10^(-15) m.

Plugging in the values:

F = (6.674 × 10^(-11) N*m^2/kg^2) * ((1.67 x 10^(-27) kg)^2) / (1.0 x 10^(-15) m)^2

Calculating this expression will give us the gravitational force between the two protons.