when earth and the moon are separated by a distance of 3.84 × 108 meters, the magnitude of the gravitational force of attraction between them is 2.0 × 1020 newtons. what would be the magnitude of this gravitational force of attraction if earth and the moon were separated by a distance of 1.92 × 108 meters?

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?