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Pavel [41]
3 years ago
15

ANSWER QUICK 30 POINTS

Physics
1 answer:
bezimeni [28]3 years ago
4 0

Answer:

Gravity creates stars and planets by pulling together the material from which they are made.

Explanation: Thats the only thing i have im stuck on the tga quiz

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You send a beam of light from a material with index of refraction 1.21 into an unknown material. In order to help identify this
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Answer:

refractive index of the unknown material is 1.33.

Explanation:

μ₁ = 1.21

incidence angle (i) = 41.9°

refraction angle (r) = 37.3°

Let us assume μ be the refractive index of the unknown material

according to snell's law of refraction.

μ₁ sin i = μ₂ sin r

1.21 × sin 41.9° =  μ × sin 37.3°

μ = 1.33

hence the refractive index of the unknown material comes out top be 1.33

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One cereal bar has a mass of 37 g. What is the mass of 6 cereal bars? Is that more than or less than 1 kg? Explain your answer.
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Label A:

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Stronauts in space need to communicate with each other by radio links because
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