When charges build up on a surface they:

apply a force to charges wandering nearby

create an electric field

A and B

A or B

A swimmer swims 3/5 the width of a river at one velocity, then swims the remainder of the river at half her initial velocity. What was the average speed across the river?

What objects will emit energy in the universe

Which of the following best describes seamounts and islands of the deep ocean basins? a. huge granite batholiths intruded beneath the ocean floor b. domed gabbro intrusions and massive, submarine, rhyolitic, pyroclastic cones andesitic pyroclastic c.

An element like silicone is not usually used to make wires or pains because it

Sound waves, water waves, and light waves are all alike in that they all

What's the definition of: • cellular respiration • photosynthesis

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

If you had a positive 8 score on the sit-an-reach test you