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3 years ago

Light travels at 3.0 × 108 m/s in a vacuum and slows to 2.0 × 108 m/s in glass. What is the index of refraction of glass?

Physics

2 answers:

Fantom [35]3 years ago

5 0

Answer:

The index of refraction,n= 1.5

Explanation:

Index of refraction, n is given by:

n = c/ v

Given: c = speed of light= 3.0×10^8m/s

v= speed of light in glass= 2.0×10^8m/s

n= (3.0×10^8)/(2.0×10^8)

n= 1.5

oksano4ka [1.4K]3 years ago

3 0

1.5 is your answer for your question

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A 94.0 kg ice hockey player hits a 0.150 kg puck, giving the puck a velocity of 44.0 m/s. If both are initially at rest and if t

miss Akunina [59]

Answer:

0.026 meter

Explanation:

using distance time equation to determine the time for the puck to move 16.5 meters.

distance 'd' = velocity'v' x time't'

16.5 = 44 x t

t =0.375 second

Here momentum is conserved. Since both objects are initially at rest, the initial momentum is 0.

Next is to determine the puck’s momentum.

Momemtum 'p' = m x v => 0.15 x 44 = 6.6kg⋅m/s

The player momentum is -6.6kg⋅m/s .

In order to determine the player’s velocity, we'll use p=mv

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The above negative sign represents that the player is moving in the opposite direction of the puck.

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3 years ago