Question 470093: The electric force between a proton and another proton
is any of these, depending on the distance between the proton and the electron.
is equal in strength to the gravitational force between them.
is stronger than the gravitational force between them.
is weaker than the gravitational force between them.
In a transverse wave, the individual particles of the medium move
parallel to the direction of travel.
in ellipses.
perpendicular to the direction of travel.
in circles.
An example of a purely longitudinal wave is a
water wave.
wave in a stretched string.
light wave.
sound wave.
A pencil in a glass of water appears bent. This is an example of
interference.
diffraction.
refraction.
reflection.
When the American flag is viewed with red light it appears
red and black.
red and blue.
red, white, and blue.
all red.
A unit of frequency is…
decibels.
seconds.
meters per second.
hertz.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! A unit of frequency is…
decibels.
seconds.
meters per second.
hertz.
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This is not a math problem.
If you don't know the answer, how would it help for anyone to tell you that answer?
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The answer is Hertz, it was once called "cycles per second", and that's what it means.
If you're studying something that requires that you know that, and you don't know that, you should reconsider.
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