Answer:
Explanation:
The definition of the intensity in terms of power is given by:
Where:
- P is the power
- A is the area
If the sound emits uniformly in all directions and that there are no reflections, we can assume the geometry of the wave sound is spherical.
Let's recall the area of a sphere is
To the first location we have:
and to the second location we have:
Now, we can divide each intensity to find the second intensity.
I hope it helps you!
Answer:
0.629 m
Explanation:
For destructive interference we have the case
m = 1,2,3.....
Frequency is given by
Wavelength
The angle
The width is
The width of the hole is 0.629 m
For destructive interference
The angles are
Answer:
5.39 m
Explanation:
From kinematics
where t is time, s is distance and is initial speed in x direction
Now 17.5=17.6634 t
=0.99 s
Using the equation of kinematics
h=5.39 m
The cooling find are there to keep the temperature low. They are mostly black in color, and hence, radiate heat, which is how the temperature is controlled.