How will the frequency of a wave appear to change if the source of the wave is moving toward an observer? O A. The frequency will not appear to change.
O B. The frequency will appear to increase.
O C. The frequency will appear to decrease.
O D. The frequency will first increase and then decrease.
Hel m pleas

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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