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

An object is given an initial velocity. What will happen to the object if no other forces act on it?

In the kitchen of your house you would like to run a 240 W blender, a 30 W phone charger, a 720 W toaster oven, and two 120 W lights. Assuming your house is wired for 120 Volts, how much current will be pulled by these electrical devices?

The doppler effect is the change in observed frequency due to a. the type of medium the wave is in b. the type of wave c. the original frequency of the source d. the motion of the source or observer

The first law of thermodynamics invention that spurred its development is

What is the de broglie wavelength of a 149-g baseball traveling at 95.4 mph? (1 mile = 1.609 km, h = 6.63 * 10-34 j·s) ?

Explain why the car reaches a top speed even though the thrust Force remains constant at 3500N

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

Unless otherwise posted, what is the speed limit in a school zone? florida

If you put in 10 J of work to push 1 c of charge against and electric field what will be its voltage with respect to its starting position? when released, what will be it's kinetic energy if it flies past it's starting position?

The process of changing the energy of a system by means of force. Force * Diatance