What has a positive charge a comb or rubber band?

22. Kerry Klutz drops her physics book off her aunt's high rise balcony. It hits the ground below 1.5 s later. a. With what speed does it hit? b. How high is the balcony (ignore air drag).

A rock is dropped downward from the top of a cliff. If the rock hits the ground after 2.0 s, what's the height of the cliff?

A "slump" moves on a relatively round slide surface. true or false

The charge of an atom from an excited state to the ground state always requires a. an increase in electron energy b. release of visible light c. absorption of energy d. emission of electromagnetic radiation

If you divide velocity m/s by time (s), what units do you get?

How is volume calculated directly and indirectly

Measurements of the earth's magnetic field have been recorded since?

What are some things cyclists do to reduce friction?

A person with his ear to the ground, sees a huge stone strikethe concrete pavement. A moment later two sounds are heard from theimpact: one travels n the air and the other in the concrete, andthey are 2.2 s apart.

An athlete on a sled is moving with a speed of 3.0 m/s across a pond covered with ice. If the total mass of the sled-athlete system is 95.0 kg, what magnitude of the average force is required to bring the sled to rest in 15.0 s