The answer is Density !, Do you also need an example ?
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Answer:
Most familiar are surface waves on water, but both sound and light travel as wavelike disturbances, and the motion of all subatomic particles exhibits wavelike properties
Explanation:
Answer:
600m
Explanation:
30×20 at a constant speed is 600m.
The best frequency should be 70 Hz you simply find the difference between 280 Hz and 210 Hz
