Consider this situation: a rope is used to lift an actor upward off the stage. of the forces listed, identify which act upon the actor. normal gravity applied friction tension air resistance

Normal

Gravity

Applied

Tension

Air Resistance

Explanation:

When a rope is used to lift an actor upward off the stage, normal force which is acting upon it will act and Gravity will also work in downward direction. Applied force will definitely act, tension force will act on the rope and air resistance will act in opposite direction.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

so easy. just google the electromagnetic waves and it’ll pop up.