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Physics

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Hal Keebler

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Cards in this guide (14)
How is energy transferred within the earth's atmosphere and throughout the oceans

by Convection

Which type of lever always increases mechanical advantage

second class lever

What does conservation of charge mean

charges can not be created or distroyed

How can transistors act as amplifiers or switches

by creating two circuit loops

What is the term for a semiconductor that is missing electrons

p-type semiconductor A semiconductor that is missing electrons is called an electron hole.

What type of device is used to transform thermal energy into electrical energy

A generator. It uses the heat energy from burning gasoline or a similar fuel.

Which of these most affects the strength of an electric field

distance between charged particles

Which type of waves are combination waves that occur at the boundary between two media

Surface Waves

Which of these waves would you expect to have the greatest wave speed

a wave with long wavelength and high frequency.

Why do you use digital signals

to decide true or false

What type of device is used to increase or decrease the voltage of an electric current

The device is called a "variac' and it is a type of transformer. It has a variable voltage ouput.

What is up these is not a material commonly found in magnets

Copper

Which term defines something that does not transfer thermal energy efficiently

conductor

Which of these would you expect to make a good insulator

a poor thermal conductor

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