Why do small bells have a high pitch

How did naval ballistics work in world war i?

A 2,000 kg car is moving at 15m/s when it collides with a 1200kg car sitting still. Briefly compare the impulse imparted on the 1200kg car by the 2000 kg car to the impulse on the 2000 kg car by the 1200 kg car which car under goes the greater

According to bohr's theory, how do electrons move around the nucleus

Why is lightning visible before thunder is heard? A Sound cannot reflect off surfaces as easily as light. B Sound travels slower than light can travel. C Sound is not processed by the brain as fast as light. D Sound needs a medium to travel through.

Who developed the atomic theory of matter? john dalton niels bohr marie curie ernest rutherford?

Two tuning forks, 254 Hz. and 260. Hz, are stuck simultaneously. how many beats will be heard?

What is a positive impact of artificial fertilizers

The coloring of the blue morpho butterfly is protective. As the butterfly flaps its wings, the angle at which light strikes the wings changes. This causes the butterfly's color to change and makes it difficult for a predator to follow.

What lunar phase would be observed from the earth, if the moon were at a 90° angle with the earth and sun?

Unbalanced contact forces between several objects would result in A. one of the objects moving B. all of the objects moving C. at least one of the objects moving and possibly all of them moving D. none of the objects moving