When a substance gains energy, the particles that make up that substance will:

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When substances gain energy, they typically change state. In this case, you answer would be "speed up and cause the substance to change state."

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

the part of the wave he is travelling on is the crest