Some people just know it. Do you have a question?
Answer:
Sound travels in air as a series of compressions and rarefactions. When an object vibrates it will move back and forth. As it moves forth, it pushes adjacent air particles. ... This is a compression: an area of high pressure that moves along the direction of the sound wave.
Explanation:
adjacent is the answer
Answer:
D.
Explanation:
The crest of a wave refers to the highest point of a wave. This is illustrated by D.
For this problem the formula you need is below.
Rate Time = Distance
What you're asking is what the rate of the car was, so to do that, we must plug! (Rate will be represented by “x”)
First, we need to find out how many hours is 2 hours and 24 minutes. If there are 60 minutes in an hour, then we can just say 24 minutes is 24/60 or 2/5 hours. So 2 hours and 24 minutes equals 2.4 hours. Now we plug:
2.4x = 200
Then we divide both sides by 2.4:
2.4x/2.4 = 200/2.4
x = 83.33 kilometers per hour. is the answer
Hope this helps!
