Answer: Wave frequency is the number of waves that pass a point in certain amount of time. The unit used to describe the frequency of a wave is hertz. 1 hertz = 1 wave passing by the point in 1 second.
Their economy was supported by agriculture. most were artisans, merchants, or craftspersons.
Answer:
He be liked "Omg this king is an IDIOT he doesn't know how to do his job!"
Explanation:
One of the main powers given to the war industries board after its creation in 1917 was to coordinate the domestic war effort in terms of private production, since this was crucial to supplies enough war supplies.
