A couple ways to reduce the bouncing of sound waves are to put foam in the wall and put slits down the wall so the sound is asorbed, another way is to hang soft mats of foam from the ceiling, that also asorbs the rogue sound waves.
Force on a particle with charge q moving with velocity v at an angle θ to a magnetic field B is F=qvBsin(θ). So B is correct
Answer:
Apparent frequency increases for Bob and decreases for Jill.
Explanation:
Doppler effect refers to the apparent change in frequency when there is relative motion between source and the listener. When the source and listener move closer, the apparent frequency heard by the listener increases. And when the source and listener move away from each other, the apparent frequency heard by the listener decreases.
Thus, when the emergency vehicle approaches Bob, the apparent frequency of the siren increases. It moves away from Jill, the apparent frequency heard by the Jill decreases.
If she is moving in a straight line at a constant speed,
then her acceleration is zero.
time to reach an angular velocity of 36.8 is 24.370 s.
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</h3><h3>What is angular acceleration?</h3>
The temporal rate at which angular velocity changes is referred to as angular acceleration. Naturally, there are two forms of angular acceleration, referred to as spin angular acceleration and orbital angular acceleration, just as there are two types of angular velocity, namely spin angular velocity and orbital angular velocity. As opposed to orbital angular acceleration, which is the angular acceleration of a point particle around a fixed origin, spin angular acceleration describes the angular acceleration of a rigid body about its centre of rotation.
w(t) = w(0) + α*t
also w(0) =0
=> time = 36.8/1.51= 24.370 s
to learn more about angular acceleration go to - brainly.com/question/21278452
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