The amount of work done to produce a sound determines which property of sound waves?
2 answers:
Intensity of sound is defined by
So here we can say work done by us is stored in the form of energy of sound and that energy can be compared by the intensity of sound
So if we will do more work then the sound will have more energy and hence it will have more intensity
Now we know that intensity of sound is given as
so more is the intensity then more work which means the amplitude will be more
So answer will be
D. amplitude
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Answer:
(a) The average speed is 0.85 milles/minute
(b) The average velocity is zero
Explanation:
In order to answer part (a) and (b) you have to apply the formulas for average speed and average velocity which are:
<em>-Average speed formula:</em>
where d is the total distance traveled and t is the tota time
Replacing the given values:
milles/minute
Notice that you have to replace the total distance, which is 14 milles for the go plus 14 milles for the return. The same for the total time.
<em>-Average velocity formula:</em>
V = Δx/Δt
Where V is the velocity vector, Δx is the displacement and Δt is the change in time
V=
Where X2 is the final position and X1 is the initial position
In this case X1= 0 i and X2=0 i (i is the unit vector in the x direction). So, the displacement is zero.
Therefore, the average velocity is:
V= 0 i [milles/minute]