The correct answer is C) frequency.
In fact, the frequency is the number of wave crests (or pulses) per seconds. In our problem, the machine that produces the wave pulses two times per second, so this is exactly the frequency of the compression wave.
Because once you use oil you can not reuse it but the sun you can because it is always here and it has solar energy
Answer:
It can go back to it's original shape
Explanation:
The answer is yes. If itbid longer it is lower. shorter me and higher
