Answer:
D
Explanation:
This is a phenomena by a black body. A black body is reckoned to absorb all energy it receives this is because it gives off energy of different frequency ranges hence as the frequency increases the energy rises.
Answer: 4R
Explanation:R=pL/A
R second wire=p2L/1/2A
=4R
that would be given by
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@ representing coefficient of kinetic friction.
thus 19.5/51.7 = 0.377