Number one- numbers of items sold. Number two- Thursday and Friday. Number three- 1,200. Number four-150
The period of the wave is the reciprocal of its frequency.
1 / (5 per second) = 0.2 second .
The wavelength is irrelevant to the period. But since you
gave it to us, we can also calculate the speed of the wave.
Wave speed = (frequency) x (wavelength)
= (5 per second) x (1cm) = 5 cm per second
Answer:
I don't understand what exactly you're asking, but this statement is true.
Explanation:
