Answer:
The value is
Explanation:
From the question we are told that
The amount of power delivered is 
The time taken is 
The wavelength is 
Generally the energy delivered is mathematically represented as

Where
is the Planck's constant with value 
c is the speed of light with value 
So

=> 
Sitting. Because its no move at all
Answer:
0.13451 m
0.124196 m
0.119997901132 m
Explanation:
= Velocity of the observer
= Velocity of sound source
v = Velocity of sound in air = 343 m/s
Wavelength is given by

The wavelength is 0.13451 m
From Doppler effect we have the formula


The wavelength is 0.124196 m


The wavelength is 0.119997901132 m
Answer:
<h2>Focal length</h2>
Explanation:
The Focal length of a lens is the distance from the center of the lens to
its principal focus.