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3 years ago

The truck is described as travelling at 30mph to the west. The quantity described here is a(n)

Physics

1 answer:

garik1379 [7]3 years ago

8 0

whats up

The correct answer is B velocity

Velocity means a speed of an object in this case the truck traveling in a given direction.

If my answer did help please mark me as brainliest thank you and have a great day!

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What is the name of the process where rocks are being broken down into small grains of sediment or soil?

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Answer:

a. weathering.

Explanation:

weathering is the process of breaking down rocks and minerals into smaller pieces by water, wind, and ice.

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3 years ago

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tensa zangetsu [6.8K]

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3 years ago

Fiber optics are an important part of our modern internet. In these fibers, two different glasses are used to confine the light

professor190 [17]

Complete Question

The complete question is shown on the first uploaded image

Answer:

$\theta_{max} =18.38^o$

New $n_{cladding} =1.491$

Explanation:

From the question we are told that

The refractive index of the core is $n_{core} = 1.497$

The refractive index of the cladding is $n_{cladding} = 1.421$

Generally according to Snell's law

$n_{core} * sin(90- \theta) = n_{cladding} * sin (90)$

Where $\theta_{max}$ is the largest angle a largest angle a ray will make with respect to the interface of the fiber and experience total internal reflection

$\theta_{max} = 90 - sin^{-1} [\frac{n_{cladding}}{n_{core}} ]$

$\theta_{max} = 90 - sin^{-1} [\frac{1.421}{1.497}} ]$

$\theta_{max} =18.38^o$

Given from the question the the largest angle is 5°

Generally the refraction index of the cladding is mathematically represented as

$n_{cladding} = n_{core} * sin (90 - 5)$

$n_{cladding} =1.491$

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3 years ago