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Physics

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Cassandra Carroll

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Cards in this guide (12)
How can transistors act as amplifiers or switches

by creating two circuit loops

What types of magnets are easy to magnetize but lose magnetism quickly

temporary magnets

Which of these is used to measure potential difference in parallel circuits

voltmeter

Which of these is not a type of signal used to send information through electricity

transistor

In which type of waves do the particles in a medium vibrate in the same direction the wave is moving

longitudinal waves

Why are temporary magnets so useful

magnetic feilds are produced only when current is flowing

Electricity is one of two aspects of which fundamental force

electromagnetism

Why do you use digital signals

to decide true or false

Which of the following is true of sound waves

sound waves require a medium to transfer energy

FOR A+ USERS THE ANSWER IS Sound waves travel in all directions
sound waves require a medium to transfer energy

-- They are longitudinal waves and material medium is required for their propagation.

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

Copper

Which of the following is true of the relationship bettween frequency and wavelength

help

Which of these would you expect to make a good insulator

a poor thermal conductor

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