If the man was on a spaceship far away from the earth how would the gravitational force between him and earth change ?

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.