A physicist found that a force of 0.72 N was measured between two charged spheres. The distance between the spheres was 0.90 m. Calculate the force between the two spheres when the distance was decreased to 0.50 m. F2 = .

A) 1.7 N
B) 1.3 N
C) 2.3 N
D) 2.6 N
Please work it out

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of