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4 years ago

9

What we see as "moonlight" is really reflected sunlight. True or False?

1 answer:

uysha [10]4 years ago

6 0

Yes, this is true. The only celestial body in the Milky Way universe that produces light is the Sun. It is the sole source of light for all the other planets and satellites. Our moon only 'borrows' light from the Sun. The surface of the moon acts as the mirror at which the Sun's light is reflected.

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The critical angle for a certain air-liquid surface is 47.7°. What is the index of refraction of the liquid? Round to the neares

KengaRu [80]

Answer:

The index of refraction of the liquid is 1.35.

Explanation:

It is given that,

Critical angle for a certain air-liquid surface, $\theta_1=47.7^{\circ}$

Let n₁ is the refractive index of liquid and n₂ is the refractive index of air, n₂ =1

Using Snell's law for air liquid interface as :

$n_1\ sin\theta_1=n_2\ sin(90)$

$n_1\ sin(47.7)=1$

$n_1=\dfrac{1}{sin(47.7)}$

$n_1=1.35$

So, the index of refraction of the liquid is 1.35. Hence, this is the required solution.

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3 years ago

Which task would a colorectal surgeon perform?

topjm [15]

Answer: 4. removing tumors in the large intestine

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3 years ago

a piece of iron with a temperature of 300 degrees Celsius is dropped into a gallon of water with a temperature of 25 degrees Cel

notka56 [123]

Heat will be transferred from iron to water, because heat flows always from the higher temperature system to the lower temperature system.

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3 years ago

1. A ball is thrown vertically upward.

Ghella [55]

Answer:

The acceleration increases.

Explanation:

hope this helps

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3 years ago

3. A drill spins with a frequency of 1200 RPM (revolutions per minute). What is its

Damm [24]

Your answer is 20
just take 1,200 divided by 60 [second] :)

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3 years ago

Read 2 more answers