Describe two ways to change the frictional force between two solid surfaces.

How much force is needed to stop a 120-kg ice-hockey player if he decelerates at 20 m/s²? a. 6 N b. 240 N c. 2400 N d. 20 N

Which of the following statements describes an electric generator? A. A magnet is rotated through a coil of wire to produce an electric current. B. Electric potential in a rotating coil of wire creates a permanent magnet. C.

if the separation between two masses is doubled, does the gravitational force between them increase or decrease? By what factor?

What form of energy does a compressed spring have? a. heat energy b. kinetic energy c. chemical energy d. potential energy

Seatbelts are necessary to prevent your body from flying out of a vehicle during a crash. why does your body not stop with the car?

Why is it important for DNA to be copied before cell division?

In the water cycle, water vapor evaporates into the atmosphere and forms clouds through condensation. What happens in the atmosphere to the water in order for the clouds to form? A) Water drops mix with air pollution to form clouds.

you walk into your room and and turn on the light however the light doesn't turn on use 4 step problem

Determine the magnitude of force F so that the resultant FR of the three forces is as small as possible.

Selena, who moves with the grace and fluid motions of a cat, has been described as A. porcine. B. equine. C. ursine. D. feline.