A spring is 14cm long. Three masses are hung from it and then it is measured again. Now it is 19.5cm long. What force did the three masses provide? The spring constant for the spring is 30N/m.

The elbow is an example of a compound machine found in the human body. true or false

Scientist suggest that galaxies are moving away from Earth due to A. Dark energy B. Doppler shift C. Energy D. Solar energy

Darrell is trying to remove a nail from a board using the claw of a hammer, but the nail is stuck. Which of the following could Darrell do to make the job easier? A. Use a hammer with a longer handle. B. Use a heavier hammer. C.

Care este legea conservarii sarcinii electrice? ma ajuta cineva?

How many miles is in 7 blocks?

If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use?

How much more ground motion is produced by an earthquake of magnitude 7.0 than by an earthquake of magnitude 4.0?

What evidence is there of life in a mini habitat?

A hole is drilled to the center of the earth and a ball is dropped into it. When the ball is at the earth's center, compared with their respective values at the earth's surface,

What is the development of static?