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3 years ago

In which of these mediums do particles of light travel the fastest?

Physics

2 answers:

Lostsunrise [7]3 years ago

8 0

Answer:

a). Vacuum

Explanation:

As we know that the refractive index of the medium is defined as

$Refractive \: index = \frac{c}{v}$

here we know that

c = speed of light in vacuum

v = speed of light in medium

so here we know that

$v = \frac{c}{\mu}$

so speed will be maximum for that medium for which value of refractive index is minimum

So here from all given options minimum refractive index is for vacuum

so correct answer will be

a). Vacuum

Harrizon [31]3 years ago

7 0

light travels fastest through a vacuum which means "empty space, void"

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Answer:

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2 years ago

A train, traveling at a constant speed of 25.8 m/s, comes to an incline with a constant slope. While going up the incline, the t

zhannawk [14.2K]

The final velocity of the train after 8.3 s on the incline will be 12.022 m/s.

Answer:

Explanation:

So in this problem, the initial speed of the train is at 25.8 m/s before it comes to incline with constant slope. So the acceleration or the rate of change in velocity while moving on the incline is given as 1.66 m/s². So the final velocity need to be found after a time period of 8.3 s. According to the first equation of motion, v = u +at.

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3 years ago

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Mrrafil [7]

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3 years ago

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Answer:

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Explanation:

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3 years ago

In an inelastic collision a 2.5 kg ball moving at 7.5 m/s is caught by a 70kg man while the man is standing on ice. What is the

MrRa [10]

The velocity of the ball and the man is 0.259 m/s

Explanation:

We can solve this problem by using the law of conservation of momentum. In fact, in an isolated system, the total momentum before and after the collision must be conserved. Therefore, for the ball-man system, we can write:

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