Rarefactions are where you see the wave further apart. Where it's closer together, it's called a compression.
Answer:
B
Explanation:
Versatility is ability to adapt or be adapted to many different functions or activities.
Answer:
The magnitude of the change in the momentum of the ball during the rebound is 4.4 kg-m/s.
Explanation:
Given that,
Mass of the ball, m = 0.1 kg
Initial speed of the ball, u = 25 m/s
Final speed of the ball, v = -19 m/s (the ball rebounds so it will be negative)
We need to find the magnitude of the change in the momentum of the ball during the rebound. The change in momentum of the object is equal to the difference of final and initial momentum.



or

So, the magnitude of the change in the momentum of the ball during the rebound is 4.4 kg-m/s. Hence, this is the required solution.
Answer: Because we can’t walk through walls and in this case, doors.
Explanation: no
6
Explanation:
The mechanical advantage is a factor that measures how input force increases using a machine.
A lever is a simple machine with the fulcrum at the center.
To calculate the mechanical advantage M.A of levers we use the expression below;
M. A =
= 
= input force
= output force
a is the distance of the input force from the fulcrum
b is the distance of the output force from the fulcrum
Given
a = 36cm
b = 6cm
M.A =
= 6
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