The plane is not accelerating.
Hope this helps!
Answer:
Frequency is 
Explanation:
Distance between source 1 from the receiver , 
Distance between source 2 from the receiver , 
Now ,
Path difference , 
We know, for constructive interference path difference should be integral multiple of wavelength .
Therefore, 
It is given that n = 1,
Therefore, 
Frequency can be found by , 
Hence, this is the required solution.
<span>Heating food under a heat lamp is an example of heat transfer by
<span>Radiation</span></span>
I think the answer is b.boom