velocity is of sound id defined as distance covered by sound per unit time
here given that
distance covered by sound = 3.5 m
time taken by the sound = 0.919 millisecond
So the velocity of sound will be given as



so the speed of sound in the given medium is 3808.5 m/s
As we know that speed of sound in any substance is given as

As per the data available online the speed of sound in gold is 3250 m/s while speed of sound in glass is 4500 m/s
So here we can say the above speed is in between these two mediums whose elasticity and density ratio is more than gold but less than glass.
So this velocity of sound is nearly match with the data obtained for copper
So this speed is approx obtained in copper
A displacement equivalent to the movement of a projectile occurs. The difference is that the monkey does not have the horizontal component that the Projectile does. Due to gravity, both are subject to the change in speed caused by acceleration due to gravitational attraction.
Both objects fall at the same rate, therefore, the projectile will impact the monkey, in the same position in which the Zoologist calculated its impact.
There are three answers, the impulse is equal to the change in momentum of the system. The dimensions of these quantities are the same, namely mass times velocity. You can think of impulse as kind of the "net effect" that a force has in changing the state of motion of a system.
Answer:
the maximum height of Joe's ball will be 4 times Bill's ball.
Explanation:
let bill's velocity be v then Joe's velocity is 2v.
and initial velocities of both bill and Joe are 0
for Bill


for Joe


thus we can write that
h'=4h
the maximum height of Joe's ball will be 4 times Bill's ball.
Answer: Your question does not make sense
Explanation: