Answer:
A sonar device sends pulses of sound waves down through the water. When these pulses hit objects like fish, vegetation or the bottom, they are reflected back to the surface. The sonar device measures how long it takes for the sound wave to travel down, hit an object and then bounce back up.
Explanation:
<u>Using equations of motion</u> :
(A) we know that,
u = 0
a = 3.7 m/s^2
S = 63
(B)
v = u + at
21.6 = 0 + 3.7 * t
<u>t (time to reach 63 m) = 5.83 seconds</u>
V=f*wavelength
30m/s=f*(0.35m)
f=85.7 Hz
Answer:
The angular acceleration is final angular speed is
Explanation:
Here we know that
.............. 1
Upon substituting these values in equation 1 we get .
For calculating angular velocity we know that
.
You would add all of them together to make 4. hope this helps((: