A 0.145-kg baseball is pitched at 42 m/s. the batter hits it horizontally to the pitcher at 58 m/s. find the change in momentum of the ball.

Explain why ice cubes formed from water of a glacier freeze at a higher temperature than ice cubes

Which allows the ear to detect sound? A. electromagnetic waves B. electrical impulses from the ossicles C. auditory nerve impulses to the pinna D. vibrations i think its D but im not sure if it is.

9. A weather satellite is launched from the ground and placed in orbit six times farther away from the earth's centre. The gravitational field experienced by the satellite in orbit is the field that it experienced on the ground? a Six times b.

The greatest amount of energy Listed down here 1. joule 2. watt 3. watt-hour 4. newton-meter

A 5 μF capacitor is connected to a 12 V battery. The charge on each plate of the capacitor is: Select one: a. 6 x 10-5 C b. 6 x 105 C c. 6 x 10-6 C d. 60 C

Two objects have the same momentum. Do the velocities of these objects necessarily have (a) the same directions and (b) the same magnitudes? Give your reasoning in each case.

If you keep voltage constant and increase resistance resistance, what happens to current?

A scene in a movie has a stuntman falling through a floor onto a bed in the room below. The plan is to have the actor fall on his back, but a researcher has been hired to investigate the safety of this stunt.

During energy transformation, all energy systems: are a. 100 percent efficient b. lose energy c. gain heat energy d. create energy

An apple with a mass of 0.95 kilograms hangs from 3.0 meters above the ground. What is the potential energy of the apple