Answer:
ground state
Explanation:
Lets take
n=3 ,n=2 ,n=1 are the energy level.
Energy level n=1 is the ground energy level.
The energy from 3 to 1 = hν
The energy from 3 to 2 = hν₁
The energy from 2 to 1 = hν₂
We can say that
hν = hν₁ + hν₂
If the electron were de-excitation from the third level to ground level then the sum of emitted frequency will be equal to the frequency of a single electron.
Therefore the answer is ground state.
Constructive interference will occur, which means the waves will combine.
In destructive inference, the waves cancel each other out.
Hope this helps :)
Answer:106560 N
Explanation:
Given
Let Tension between 2 and 3 car be
and between 3 &4 is 

mass of freight car =37,000 kg
acceleration of car
is accelerating all freights behind 3
therefore


Thus


Answer:

Explanation:
First of all, we need to find the initial wavelength of the photon.
We know that its energy is

So its wavelength is given by:

The formula for the Compton scattering is:

where
is the original wavelength
h is the Planck constant
m is the electron mass
c is the speed of light
is the angle of the scattered photon
Substituting, we find
