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☆☆☆☆☆Cards in this guide (8)
What do electric cells do
convert chemical energy into electrical energy
What if your body applies force to the ground as weight If you weigh 450 newtons and carry a backpack that weighs 45 newtons what is the net force applied downward to the ground
495 n
How do the vibrations of an audio speaker produce sound waves
The vibrations of an audio speaker produce sound waves by compressions and rarefactions in air particles.
What is the term for the small packets of energy emitted from light
Photons
Which of these waves would you expect to have the greatest wave speed
a wave with long wavelength and high frequency.
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.
Which of these statements about the EM spectrum is false
most of the EM spectrum is visible light.
Which of the following produces electromanetic waves is it moving neuton
No. Electromagnetic waves are produced by accelerating charges (NOT by moving charges, they have to accelerate); a neutron has no net electrical charge.
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