What is the potential energy of a spring that is compressed 0,65 m by a 25 kg block if the spring constant is 95 N/m?

1.6

7.9

15 J

20

If velocity is decreasing, then acceleration:

The height of an object dropped from the top of a 64-foot building is given by h (t) = -16t^2+64. How long will it take the object to hit the ground?

Calculate the RMS value of an AC signal with a peak amplitude of 10V and a frequency of 10kHz

What is the mani difference between kentic energy and potential energy

3. Which form of radiation is used to kill microorganisms? a. microwaves b. visible light c. infrared rays d. ultraviolet rays

What trends were seen in Mendeleev's periodic table?

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks

Average mass of a toy car (small, hot wheels) ?

A cannon directed straight upward launches a ball with an initial speed v. The ball reaches a maximum height h in a time t. Then, the same cannon is used to launch a second ball straight upward at a speed 2v.

Does the sun fuse hydrogen into helium or vice versa?