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saul85 [17]
3 years ago
12

A ray of light traveling in glass (refractive index na) reflects at the flat interface between the glass and water (refractive i

ndex nb). The incident ray in glass makes an angle of θa with the normal to the interface and the reflected ray makes an angle of θr with the normal. If na is increased (by using a different type of glass) but θa is kept the same, how does θr change?
Physics
1 answer:
pickupchik [31]3 years ago
5 0

Answer:

θr  will increase.

Explanation:

We know that when light travel from one medium to another medium the relationship between refractive index and angle given as

na. sinθa = nb . sinθr

sin \theta _r=\dfrac{n_asin\theta _a}{n_b}

If na is increased (by using a different type of glass) but θa is kept the same then sinθr will also increase.

So answer is θr  will increase.

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If the prism is surrounded by a fluid, what is the maximum index of refraction of the fluid that will still cause total internal
larisa86 [58]

Answer:

n₁ > n₂.

prisms are made of glass with refractive index n₂ = 1.50, so the fluid that surrounds the prism must have an index n₁> 1.50

Explanation:

Total internal reflection occurs when the refractive index of the incident medium the light is greater than the medium to which the light is refracted, let's use the refraction equation

                 n₁ sin θ₁ = n₂ sin  θ₂

the incident medium is 1, at the limit point where refraction occurs is when the angle in the refracted medium is 90º, so sin θ₂ = 1

                 n₁ sin θ₁ = n₂

                 sin θ₁ = n₂ / n₁

We mean that this equation is defined only for n₁ > n₂.

In our case, for the total internal reflection to occur, the refractive incidence of the medium must be greater than the index of refraction of the prism.

In general, prisms are made of glass with refractive index n₂ = 1.50, so the fluid that surrounds the prism must have an index n₁> 1.50

6 0
3 years ago
What do we call the energy that is transferred to
mojhsa [17]

Answer:

Latent heat

Latent heat is the heat needed to change a state without a change in temperature.

Explanation:

Hope this helps :D

5 0
3 years ago
The banking angle in a turn on the Olympic bobsled track is not constant, but increases upward from the horizontal. Coming aroun
zlopas [31]

Answer:

the curve inclination is increased so that a weight component helps keep the car on track

Explanation:

In the sledging competition these devices go at quite high speeds over 100 km/h, so when reaching the curves the friction force is not enough to keep the car on the track. For this reason,  the curve inclination is increased so that a weight component helps keep the car on track.

In general we can solve Newton's second law for this case, with the condition of no friction, it is found that

   V² = r g tan θ

 Where V is the maximum velocity, r is the radius of the curve a, θ is the angle of the inclination

8 0
4 years ago
The normal force n with arrow, the gravitational force mg with arrow, and the upward component of the applied force do no work o
lord [1]

Answer and Explanation:

  • Should let force applied throughout horizontal direction become "F", as well as the displacement of that same sled, become "d." This same force's work seems to be "Fd."
  • Presently, unless the mass would be doubled as well as the force is applied continues to remain the very same, the work used by the force to keep moving the sled by such the distance "d" would then remain the same.

So that the above seems to be the right answer.

4 0
4 years ago
2. What is the cheetah's speed for the first four seconds. She
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Explanation:

Cheetahs can go from 0 to 60 miles per hour in just 3.4 seconds and reach a top speed of 70 miles per hour. While they are the fastest land animal in the world, they can only maintain their speed for only 20 to 30 seconds.

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