An ammonia molecule has a permanent electric dipole moment of 5*10^-30 C*m. A proton is 1.80 nm from the molecule in the plane that bisects the dipole.

What is the electric force of the molecule on the proton?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)

Avoltaic cell converts chemical energy to

Does current flow through or across a resistor?