Which uses the refractive properties of light to separate it into its different wavelengths?

1 answer:

5 0

A). No. A mirror doesn't separate light into its different wavelengths.

B). No. Light doesn't separate into its different wavelengths when it
goes, say, from glass into water.

C). No. When light goes through your glasses, it doesn't separate
into its different wavelengths.

D). Yes ! When sunlight shines into droplets of water in the atmosphere,
it comes out separated into its different wavelengths. When we see that
happening in the air in front of us, we call it a "rainbow".

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A bus is moving with the velocity of 72km/he has acceleration 0.5m/².How long will it take to gain the velocity of 30 m/s?

stepan [7]

First km/h to m/s:

m/s = km/h / 3.6

m/s = 72 / 3.6

m/s = 20

Now, use the formula:

Vf = Vo + at

Clear t:

t = (Vf - Vo) / a

Replace:

t = (30 m/s - 20 m/s) / 0.5 m/s²

Resolving:

t = 10 m/s / 0.5 m/s²

t = 20 s

It will take 20 seconds.

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IRISSAK [1]

Answer:

Explanation:

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Impulse also equals change in momentum or

F x t = m v₂ - m v₁

The given case is as follows

in the first case

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