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klio [65]
3 years ago
7

A car traveling at a constant velocity goes a distance of 198 kilometers in 2.2 hours. What is the velocity of the car?

Physics
1 answer:
yawa3891 [41]3 years ago
6 0

Answer:

90

Explanation:

take note that V=\frac{D}{T} (velocity is distance over (divided by) time. so in this case its 198(distance) divided by 2.2 (time) =90

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You are designing a new piece of fishing equipment that will allow you to catch a fish from the surface. You know that water ref
OleMash [197]

Answer:

Law of refraction

Explanation:

An experiment to analyze the refraction of light in water can easily be performed with a laser pointer and protractor.

We throw the fishing rod line into the water, place the protractor at the point where the line touches the water and use the direction of the line for the direction of the laser pointer (on), the laser is visible by the reflection on the particles in the air.

The vertical line is called Normal and all angles must be measured with respect to this reference in optics.

Having these angles and the refractive index of water we can use the law of refraction

         n₁ sin θ₁  = n₂ sin θ₂

         θ₂ = sin^{-1} ( \frac{n_1}{n_2} \ sin \ \theta_1 )

we can repeat several times to analyze several different input points (different angles) and to decrease the errors in the measurements.

the refractive index of air is n1 = 1 and n2= 1.33  (water)

4 0
2 years ago
How Are Babies In The Womb For 9Months But Aren't 9Months When They Are Born
zheka24 [161]
<span>You could easily define it this way. This would be valid. But for most of history it was unclear when a baby was conceived, so it would be silly for someone to say their baby was 9 months old when it was actually born at only 8.5 months. Days of conception similarly would not be a good substitute for birthdays because no one would know them. Then in general it was much easier to mark someone's age as when they came into the world as an independent being, and this tradition is far too entrenched (and simple and easy to handle and universal for people in poor countries etc) to think we would at all gain from now finding exactly the date of conception and counting age from that point.</span>
3 0
2 years ago
Read 2 more answers
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Alex Ar [27]

Answer:

It's Neptune:)

Explanation:

4 0
3 years ago
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agasfer [191]
D) compounds and pure substances
because none of them are elements
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2 years ago
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