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jeka94
3 years ago
13

In your own words, explain why light can travel with or without a medium

Physics
1 answer:
Darya [45]3 years ago
7 0
I'm not really sure if it's completely right but I was taught that light can travel without a medium because light is composed of quanta called photons, and since it is a property of photons that they don't require a medium of transmission
( sorry if that doesn't make sense )
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Answer:

It changes at a rate of 4/3 meter per second

Explanation:

In the given figure below we have

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\frac{5}{2+Y}=\frac{2}{Y}\\\\5Y=4+2Y\\\\Y=\frac{4}{3}m/s

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2 years ago
A 12 n cart is moving on a horizontal surface with a coefficient of kinetic friction of 0.20. what force of friction must be ove
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We must remember that the total net force equation at constant velocity is:

<span>F – Ff = 0</span>

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Using Newton's 2nd Law of Motion:<span>

F = m a 

<span>Where,

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Therefore, 

F - µN = 0 

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Therefore, 

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<span>F = 2.4 N </span></span></span>
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3 years ago
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Explanation:

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