Calculate the magnitude of a gravitational force between two object 400kg and 800kg separated by a distance of of 45m (take G =6.67 * 10^-11 Nm^2 kg^-2)

Explanation:

The formula is

and filling in:

and multiply and divide all that out to get

 It should really only be 1 significant digit since 400 and 800 both have only 1 significant digit, but I used 2. It should be

1 × 10⁻⁸ N

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods