Answer:
fb = 240.35 Hz
Explanation:
In order to calculate the beat frequency generated by the first modes of each, organ and tube, you use the following formulas for the fundamental frequencies.
Open tube:
(1)
vs: speed of sound = 343m/s
L: length of the open tube = 0.47328m
You replace in the equation (1):
Closed tube:

L': length of the closed tube = 0.702821m

Next, you use the following formula for the beat frequency:

The beat frequency generated by the first overtone pf the closed pipe and the fundamental of the open pipe is 240.35Hz
now you can yourself know to which part of electromagnetic spectrum the photon belongs....
not fitting sharply in green
Answer:

Explanation:
q = Charge
r = Distance




The electric field is given by

The electric field at the aircraft is 
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Answer:
The velocity of the recoil is 
Explanation:
Kinetic Energy

The mass of th gun is the both mass the shotgun and the arm shoulder combination

The velocity is negative because is in opposite direction of the bullet