Answer:
You will hear the note E₆
Explanation:
We know that:
Your speed = 88m/s
Original frequency = 1,046 Hz
Sound speed = 340 m/s
The Doppler effect says that:
Where:
f = original frequency
f' = new frequency
v = velocity of the sound wave
v0 = your velocity
vs = velocity of the source, in this case, the source is the diva, we assume that she does not move, so vs = 0.
Replacing the values that we know in the equation we have:
This frequency is close to the note E₆ (1,318.5 Hz)
Explanation:
The given data is as follows.
Pulling force on the reel is F = T = 2.3 N
Mass of cylinder (m) = 0.82 kg
Radius of cylinder (r) = 0.045 m
Formula for torque pulling force on the cylinder is as follows.
=
Moment of inertia of the cylinder (I) is as follows.
I =
= angular acceleration of the cylinder
Hence,
Fr =
or,
=
= 124.66
Amount of line pulled is h and it is in a times of 0.2 sec.
Now, linear acceleration is calculated as follows.
a =
=
= 5.61
Now, relation between h and acceleration as follows.
h =
here, = 0
Hence, calculate the value of h as follows.
h =
=
= 0.1121 m
Thus, we can conclude that acceleration of the fishing reel is 5.61 and it will pull 5.61
line from the reel in 0.20 s.