Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?

8. The coils of a solenoid are stretched so that the length of the solenoid is twice its original length.

You throw a ball straight up at 45 m/s. how many seconds elapse before it is traveling downward at 9 m/s?

A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 4.25 times around the track.

Who was executed for believing that Earth revolves around the sun? a. Galileo Galilei b. Max Planck c. Giordano Bruno d. Nicolaus Copernicus

Technician A says that for best results, loosen the fastener immediately after spraying it with penetrating oil. Technician B says that rusted fasteners may be loosened by tapping with a hammer. Which technician is correct? a. technician A only b.

What is a result when the torques on each side of the fulcrum are equal? no motion rotate counterclockwise about the fulcrum rotate clockwise about the fulcrum iIt will teeter clockwise and counterclockwise about the fulcrum

Suppose a 58-turn coil lies in the plane of the page in a uniform magnetic field that is directed out of the page. The coil originally has an area of 0.175 m2. It is stretched to have no area in 0.100 s.

A yummy glazed doughnut is shown above. 1) where is the center of mass of this fantastic culinary delight? in the center of the hole. somewhere inside the solid part of the doughnut the center of mass is not defined in cases where mass is missing.

10. Explain the difference between the short-term effects of concussions and some of the long-term effects that scientists are recently discovering.

Like the polar bear, the walrus is a strong swimmer, although it does not have the same endurance. For short periods of time, a walrus can swim at an average speed of 9.7 m/s. How far would a walrus swim at this speed in 3.4 minutes?