A device that starts or stops the flow of current

Nani conducts an investigation on plants. She places a grow light on a time to give the plants different amounts of light to see if this would effect their growth. In this investigation, the amount of light is the

A sample of radium-226 will decay to 1/4 of its original amount after 3200 years. What is the half-life of radium-226? Found Answer: 1600

Sophie says that geologic maps do not matter because she gets no benefits from them. Why is Sophie wrong? a. She can see the ranges of mountains near her house. B. She needs to learn how to read geologic maps in school. C.

As part of a circus performance, a man is attempting to throw a dart into an apple which is dropped from an overhead platform. Upon release of the apple, the man has a reflex delay of 215 milliseconds before throwing the dart.

You notice the flagpole at school vibrating in the breeze. You count the vibrations and find that the flagpole makes 20 complete vibrations in 10 seconds. You read somewhere that this flagpole vibrates at a speed of 25 m/s when the wind is blowing.

Communicate the results

What is the function of the muscles around the lens in the human eye

How does planting trees in urban areas improve air quality and reduce energy use?

A student sitting in a merry-go-round has an acceleration of 3.6 m/s2. If the tangential velocity of the student is 2.5 m/s, what is the distance of the student from the center of the merry-go-round?

A car is traveling at vx = 20 m/s. The driver applies the brakes and the car decelerates at ax = - 4.0 m/s2. What is the stopping distance? A car is traveling at = 20. The driver applies the brakes and the car decelerates at = - 4.0.