What properties of sound determine the pitch of sound? How is this affected by motion of the sound source? Be specific.

I drop a quarter from a 2 story house. It takes 1.85 to hit the ground. what was the velocity

Two objects are 50 meters away. Both have a mass of 50 grams. What are two ways to increase the gravitational force between them?

Explain how a refrigerator works to cool down warm objects that would otherwise be room temperature

What vocabulary word is "wetness in the atmosphere"?

The number of times that a wave vibrates in unit is called

A car accelerates uniformly from 0 to 15m/s in 5 s. Calculate acceleration.

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.

What two factors determine how fast weathering occurs