Which of these is the best example of potential energy?

a. a ball rolling across the floor

b. a runner lying on the ground after a race

c. a wind-up toy with the spring tightly wound

d. Jack and Jill at the bottom of their hill

Michael boarded a plane and flew for 2 hours over a distance of 900 miles he then returned home on another 2 hour plane ride traveling the same distance what was michaels average speed for the whole trip

What happens to the direction of a light wave when it passes from a less dense medium such as air into a more dense medium such as glass

What does the term Copernican revolution refer to

As the bright sun shines upon the water, the water slowly disappears. the same sunlight gives energy to the surrounding plants to convert water and carbon dioxide into sugar and oxygen gas which change is physical and which is chemical

A ski lift is used to transport people from the base of a hill to the top. If the lift leaves the base at a velocity of 15.

Woman pulls a 6.87 kg suitcase, initially at rest, with a 29.2 N force along the handle at 57.7º. Friction pulls back at 12.7 N, and the suitcase moves 5.93 m. What is its final speed? (Unit = m/s)

Suppose you know a golf ball's horizontal velocity and the time it has traveled through the air. how could you calculate how far the ball traveled

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud

Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12 m