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3 years ago

SOMONE PLEASE HELP ASAP!!!!

Physics

1 answer:

Anna11 [10]3 years ago

7 0

Answer:

from vacuum to air

Explanation:

Refraction is a property of lightwave, in which it changes speed as it passes the boundary between two media.

When light travels from a denser medium to a less dense medium, the light wave speeds up and bends away from the normal.
Also when light travels from a less dense medium to a denser medium, the light wave slows down and bends toward the normal.

The correct option must be from a less dense medium to a denser medium.

density of glass = 2500 kg/m³

density of air = 1.275 kg/m³

density of ice = 919 kg/m³

density of water = 1000 kg/m³

density of plastic = 940 kg/m³

density of vacuum = 6.5 x 10⁻²⁷ kg/m³

The two possible options are;

from ice to water

from vacuum to air

The difference in densities of ice and water is not larger compared to vacuum and air.

If you are required to choose two options, the two options are correct

But if it is only one option, then from vacuum to air is the correct answer.

Therefore, the correct option is from vacuum to air

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Explanation:

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We start by analyzing the vertical motion: we can find the time of flight of the ball by using the following suvat equation

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u = 0 is the initial vertical velocity

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Solving for t,

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Now we analyze the horizontal motion. We know that the ball covers a horizontal distance of

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t = 0.495 s

Therefore, since the horizontal velocity is constant, we can calculate it as

$v_x = \frac{d}{t}=\frac{0.50}{0.495}=1.01 m/s$

So, the ball rolls off the table at 1.01 m/s.

Learn more about projectile motion:

brainly.com/question/8751410

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