A photon with wavelength 11. 0 nm is absorbed when an electron in a three-dimensional cubical box makes a transition from the gr
1 answer:
For a photon with wavelength 11. 0 nm, the side length LL of the box is mathematically given as
L=1.414*10^{-27}m
<h3>What is the side length LL of the box?</h3>Generally, the equation for the change in energy is mathematically given as
Therefore
L=1.414*10^{-27}m
In conclusion, the side length LL of the box is
L=1.414*10^{-27}m
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Answer:
d=510.2m
t=10.2s
Explanation:
The formulas for accelerated motion are:
From them we can get .
We have:
And substitute:
We multiply both sides by 2a, and continue:
Being d the displacement , we have
For our exercise, we will write this as:
And taking upwards direction positive and imposing final velocity 0m/s (for maximum height), we have:
For the time we use:
Answer:
20.62361 rad/s
489.81804 J
Explanation:
= Initial moment of inertia = 9.3 kgm²
= Final moment of inertia = 5.1 kgm²
= Initial angular speed = 1.8 rev/s
= Final angular speed
As the angular momentum of the system is conserved
The resulting angular speed of the platform is 20.62361 rad/s
Change in kinetic energy is given by
The change in kinetic energy of the system is 489.81804 J
As the work was done to move the weight in there was an increase in kinetic energy