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olganol [36]
3 years ago
15

The speed of light in air is 3 x 108 m/s. The speed of light in ice is 2.29 x 108 m/s. What is the refractive index from air to

ice?
Physics
1 answer:
Studentka2010 [4]3 years ago
4 0

Answer:

η = 1.31

Explanation:

The formula for the refractive index of from air to some other medium is given by the following formula:

\eta = \frac{c}{v}\\

where,

η = refractive index = ?

c = speed of light in air = 3 x 10⁸ m/s

v = speed of light in ice = 2.29 x 10⁸ m/s

Therefore, using these values in the equation we get:

\eta = \frac{3\ x\ 10^8\ m/s}{2.29\ x\ 10^8\ m/s} \\

<u>η = 1.31</u>

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A proton with a speed of 3.2 x 106 m/s is shot into a region between two plates that are separated by a distance of 0.23 m. As t
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Answer:

<h2>The magnitude of the magnetic is 0.145 T</h2>

Explanation:

Given :

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The force on the proton in magnetic field is given by,

  F = q (v \times B)

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When particle enter in magnetic field at the angle of 90° so particle moves in circle

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  F = \frac{mv^{2} }{r}

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  B = \frac{mv}{qr}

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Three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another. The cubes are lined up
Westkost [7]

Answer:

24 N

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m = mass of the cube = 6.0 kg

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M = mass of the three cubes together = 3 m = 3 (6.0) = 18 kg

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F = Force applied on the combination

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Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, t
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Answer:

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Explanation:

From law of conservation of motion,

mu+m'u' = V(m+m')................. Equation 1

Where m = mass of the first car, m' = mass of the second car, initial velocity of the first car, u' = initial velocity of the second car, V = Final velocity of both cars.

make V the subject of the equation

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