Answer:
a
The expression for wave number is
The expression for the wave number is ![B = \frac{2\pi}{wavelength } = \frac{2\pi}{0.1} =20\pi](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7B2%5Cpi%7D%7Bwavelength%20%7D%20%20%3D%20%5Cfrac%7B2%5Cpi%7D%7B0.1%7D%20%20%3D20%5Cpi)
Explanation:
The explanation is shown on the first uploaded image
Answer:
a) p=0, b) p=0, c) p= ∞
Explanation:
In quantum mechanics the moment operator is given by
p = - i h’ d φ / dx
h’= h / 2π
We apply this equation to the given wave functions
a) φ =
.d φ dx = i k
We replace
p = h’ k
i i = -1
The exponential is a sine and cosine function, so its measured value is zero, so the average moment is zero
p = 0
b) φ = cos kx
p = h’ k sen kx
The average sine function is zero,
p = 0
c) φ =
d φ / dx = -a 2x
.p = i a g ’2x
The average moment is
p = (p₂ + p₁) / 2
p = i a h ’(-∞ + ∞)
p = ∞
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Answer:
22044.3 N
Explanation:
We are given that
Dimension of office window=![3.7m\times 2.1 m](https://tex.z-dn.net/?f=3.7m%5Ctimes%202.1%20m)
Area of office window=![l\times b=3.7\times 2.1=7.77 m^2](https://tex.z-dn.net/?f=l%5Ctimes%20b%3D3.7%5Ctimes%202.1%3D7.77%20m%5E2)
Outside air pressure=P1=0.972 atm
Inside pressure,P2=1.0 atm
Pressure=P2-P1=1-0.972=0.028 atm=0.028\times 101325 Pa=2837.1 Pa
1 atm=101325 Pa
Force,F=PA
Using the formula
![F=7.77\times 2837.1=22044.3 N](https://tex.z-dn.net/?f=F%3D7.77%5Ctimes%202837.1%3D22044.3%20N)
Hence, the net force pushes out on the window=22044.3 N
Answer:
two wavelength are present
as wavelength is counted either from crest to crest or trough to trough and there are only 2