4 years ago

A wheelbarrow is a complex machine that combines which simply marchines?

Physics

2 answers:

Juli2301 [7.4K]4 years ago

5 0

Lever and wheel and axle

koban [17]4 years ago

4 0

It's most likely the combination of a bucket and the wheel.

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A light ray in air hits piece of quartz at a 39.0 deg angle. Inside the quartz, the light slows down to 2.06*10^8 m/s. At what a

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Answer:

Angle of light at which it will travel in the quartz is given as

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As we know that the refractive index of a medium is the ratio of speed of light in air and speed of light in the medium

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here we have

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now by Snell's law we have

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$1 sin39 = 1.456 sin\theta$

$\theta = 25.6^o$

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