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3 years ago

Total internal reflection is the complete reflection of a light ray _____.

Physics

2 answers:

Licemer1 [7]3 years ago

7 0

B- Back into it's original medium.
Hope this helps!

Finger [1]3 years ago

6 0

Answer: (B). Total internal reflection is the complete reflection of a light ray back into its original medium.

Explanation:

Reflection: The reflection will, when the incidence angle will make between $0^{\circ}$ and $90^{\circ}$ .

In the reflection, the light ray moves one medium to another medium.

Total internal reflection: The total internal reflection will, when the incidence angle is greater than the critical angle.

In the total reflection, The light ray comes back into the original medium after reflection.

Critical angle: Critical angle permits the ray of light to be reflected back in the medium n₁ and it does not refract into the medium n₂.

Hence, Total internal reflection is the complete reflection of a light ray back into its original medium.

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Why are astronauts weightless in the Space Station? You may find it helpful to watch the video "Newton's Laws of Motion." Why ar

Zolol [24]

Answer:

B) Because the Space Station is constantly in free-fall around the Earth.

Explanation:

Anything that is falling experiences an upward force on them. For example when a person is going down in a lift they will experience something that is pushing them upwards. This happens due to the fact that the total acceleration the body is feeling is less than the acceleration due to graviity.

The force on a body which is falling is

$F=m(g-a)$

Where,

m = Mass of object

g = acceleration due to gravity

a = acceleration the object is experiencing.

a = g. So, the force becomes zero and the object experiences weightlessness.

Hence, the astronauts in the space station experience weightlessness due to fact that the Space Station is constantly in free-fall around the Earth.

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3 years ago

As a liquid is added to a beaker, the pressure exerted by the liquid on the bottom

abruzzese [7]

Answer: c) increases

Explanation:

Pressure increases with decreasing height

4 0

3 years ago

Please help me

Grace [21]

Answer:

a. 60 N*s

b. 60 (kg*m)/s

c. 3 m/s

Explanation:

Givens:

m = 20 kg

v_i = 0 m/s

t = 10 s

F = 6 N

a) Impulse:

I = F*t

I = 6 N*10 s

I = 60 N*s

b) Momentum:

p = v*m

F = m(a)

a = F/m

a = 6 N/20 kg

a = 0.3m/s^2

a = (v_f -v_i)/t

v_f = (0.3 m/s^2)*10 s

v_f = 3.0 m/s

p = 3 m/s*20 kg

p = 60 (kg*m)/s

c. Final velocity

a = (v_f -v_i)/t

v_f = (0.3 m/s^2)*10 s

v_f = 3.0 m/s

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3 years ago

Which planet is represented by the letter "h"?

Mandarinka [93]

The planet is represented as Saturn ♄

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3 years ago

How much force is required to accelerate a 5 kg mass at 20 m/s^2

Studentka2010 [4]

Hello!

$\large\boxed{F = 100N}$

Use the equation F = m · a (Newton's Second Law) to solve. Substitute in the given values:

F = 5 · 20

F = 100N

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3 years ago