Answer: 15 m/s2
Explanation: I hope this helps or right because I learned this a few months ago
Compressions are the areas of high pressure while rarefractions are low pressure area
That they travel in a vacuum. All other waves require a medium in which they wave.
Since momentum is equal to mass multiplied by velocity, you would mulitply 250 grams by 68 m/s.
The answer is 17,000 kg*m/s
Answer:

Explanation:
The object is moving to and fro about its mean position
and the equation for its displacement is given as

now in one complete time period we know that the the object will complete its one oscillation
So the change in the position of the object in one complete time period will be ZERO
so here we can say that

since change in position is zero
so displacement = 0
