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andriy [413]
3 years ago
10

Total internal reflection occurs when the angle of incidence

Physics
2 answers:
sladkih [1.3K]3 years ago
7 0

Answer:

Total internal reflection, in physics, occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.

Explanation:

Total internal reflection, in physics, occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.

laiz [17]3 years ago
6 0
Total internal reflection complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.
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Compare the minimum energies required to remove a neutron from Ca, zzCa and 23Ca, using m40=37225.15 MeV/c2, m41=38156.36 MeV/c?
nordsb [41]

Answer:

Explanation:

From the given information, we are to compare the minimum energies required to remove a neutron from  ^{41}_{20}Ca,  ^{42}_{20}Ca  and  ^{43}_{20}Ca

To start with   ^{41}_{20}Ca; the minimum  energy required to remove a neutron from^{41}_{20}Ca is :

= E ( ^{41}_{20} Ca) - E ( ^{40}_{20} Ca) - E ( ^{1}_{0} n)

= (38156.36 - 37225.15 -939.57) MeV

= -8.36 MeV   Since energy is being given out

Thus, E = 8.36 MeV

the minimum  energy required to remove a neutron from ^{42}_{20}Ca is :

= E ( ^{42}_{20} Ca) - E ( ^{41}_{20} Ca) - E ( ^{1}_{0} n)

= ( 39084.46 - 38156.36 - 939.57) MeV

= -11.47 MeV     Since energy is being given out

Thus, E = 11.47 MeV  

the minimum  energy required to remove a neutron from ^{43}_{20}Ca is :

= E ( ^{43}_{20} Ca) - E ( ^{42}_{20} Ca) - E ( ^{1}_{0} n)

= (40016.10 -39084.46 -939.57) MeV

=  - 7.93 MeV     Since energy is being given out

Thus, E =7.93  MeV

Why there is a distinct increase of this energy for ^{42}_{20}Ca ?

This is as a result of electronic configuration of ^{42}_{20}Ca which posses the same number of proton and neutron, as such, ^{42}_{20}Ca tends to acquire more stability. For this reason, it will be difficult to remove a neutron from ^{42}_{20}Ca .

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3 years ago
in which of the following situations or place would you want to reduce the force of friction ( multiple answers) A.) moving your
Brilliant_brown [7]

Answer:

here friction must be reduced when

B.) the axle of your car wheels while you are driving

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Friction is a type of force which is required in many process and in those if we reduce the friction then the system may not work

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Here we know that the mousepad is working when mouse runs on the pad and if it makes frictionless than it will not work

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