The answer is: none of the above.
Explanation:
When light reflects from a surface, the frequency, wavelength, and speed do not change. They remain the same.
Answer:
A negative charge, if free to move in an electric field, will move from a low potential point to a high potential point. To move a positive charge against the electric field, work has to be done by you or a force external to the field.
Explanation:
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Answer: I looked it up and it says something about the waves traveling in a solid but I don’t know if that’s correct.
A.) Electromagnetic Current
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