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ale4655 [162]
3 years ago
15

2. How much time will it take to move 120 m if an object moves 300 m/s?

Physics
1 answer:
skad [1K]3 years ago
5 0

Answer:

2.5 seconds

Explanation:

Time is equal to distance over speed

300 divide by 120 u get 2.5 seconds

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A light ray traveling through a material with an index of refraction of 1.2 is incident on a material that has an index of refra
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compared to the incident angle, the refracted angle is 45.56⁰

Explanation:

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n₁sin(I) = n₂sin(r)

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n₂ is the refractive index of light in medium 2 = 1.4

I is the incident angle

r is the refractive angle

n = \frac{1}{sin(I)}\\\\sin(I) = \frac{1}{n}\\\\sin(I) =\frac{1}{1.2}\\\\sin(I) =0.8333\\\\I = sin^-{(0.8333)

I = 56.439⁰

Applying snell's law

n_1sin(I) = n_2sin(r)\\\\sin(r) = \frac{n_1sin(I) }{n_2}\\\\sin(r) = \frac{1.2*sin(56.439) }{1.4}\\\\sin(r) = 0.714\\\\r = sin^-(0.714)\\\\r = 45.56^o

Therefore, compared to the incident angle, the refracted angle is 45.56⁰

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