A wave can be defined as: A) A self-propagating periodic disturbance that transp

Question

A wave can be defined as:

A) A self-propagating periodic disturbance that transports matter through space and time.
B) A self-propagating non-periodic disturbance that transports matter through space and time.
C) An evanescent periodic disturbance that transports electromagnetic energy through space and time.
D) A self-propagating periodic disturbance that transports energy and momentum through space and time.

I definitely know that matter can be involved, but normally it is mainly energy. So I believe it is D, but momentum is throwing me off. I'm stuck between D & C, any suggestions?? Thank you in advance!

Explanation / Answer

C) An evanescent periodic disturbance that transports electromagnetic energy through space and time. IS ONLY ENERGY IS CONSTANT AT EVERYPOINT ON THE WAVE BUT NOT MOMENTUM SINCE VELOCITY IS NOT CONSTANT ON ALL THE WAVE

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