What is the name of the group of elements that are human-made and do not occur in nature?

In terms of conservation of momentum explain why it is not a good idea to jump from a rowboat to a dock that seems just within jumping distance, if the boat is not tied to the dock.

What does this mathematical expression mean? D 1/T A. Density is directly related to temperature B. Density is indirectly related to temperature C. Density is inversely related to temperature D. Density equals the inverse of temperature

What is the earths gravational pull

A car has two horns, one emitting a frequency of 199 hz and the other emitting a frequency of 203 hz. what beat frequency do they produce?

Puck 1 (1 kg) travels with velocity 20 m/s to the right when it collides with puck 2 (1 kg) which is initially at rest. After the collision, puck 1 moves with a velocity of 5 m/s.

A car travels 35.0 mph north for 1.00 hour, then 40.0 mph east for 0.0500 hour, and finally 50.0 mph northeast for 2.00 hours. Calculate the average speed.

A 500 lb steel beam is lifted up by a crane to a height of 100 ft and is held there. A) How much work is being done to hold the beam in place? B) How much work was done to lift the beam?

If Light is shone through the slits of a card onto a sheet of white paper describe what is seen.

When you break a magnet in half, how many poles does each piece have? Explain.

What can you use to unscrew a tiny screw?