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Ivan
3 years ago
12

Heat from the sun comes on the earth by ​

Physics
1 answer:
Rashid [163]3 years ago
7 0

Answer:

heat from the sun comes on the earth by radiation

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The index of refraction for water is about 4 3 . What happens as a beam of light travels from air into water?
hjlf

Answer:

Its speed decreases.

Explanation:

When light enters into water, its speed decreases (as well as its frequency). This is the reason why refraction (the bending of light when it changes media) occurs.

This can be proven mathematically.

Given that the refractive index of water is 4/3, we know that refractive index is the ratio of the speed of light in a vacuum to the speed of light in another medium.

Therefore,

4/3 = (speed of light in vacuum) / (speed of light in water)

Speed of light in a vacuum is 3 * 10^8. Hence,

Speed of light in water is:

v = (3 * 10^8) / (4/3)

v = 2.25 * 10^8 m/s

As we can see, the speed of light decreases in water.

5 0
3 years ago
Something with volume takes up _____.<br> a. mass<br> b. space<br> c. gravity<br> d. density
Anni [7]
B, something with volume takes up space.
7 0
4 years ago
a measuring cylinder contains 30cm3 of a liquid some more of the liquid is added until the liquid level reaches the 50cm3 mark t
S_A_V [24]

Answer:

1.5g/cm³

Explanation:

Given parameters:

Initial volume of the liquid  = 30cm³

Final volume of the liquid  = 50cm³

Mass of the liquid  = 30g

Unknown:

Density of the liquid  = ?

Solution:

Density is the mass per unit volume of a substance.

  Density  = \frac{mass}{volume}  

volume of the liquid  = final volume - initial volume  =  50cm³  -  30cm³

 volume of the liquid  = 20cm³

Density  = \frac{30}{20}   = 1.5g/cm³

6 0
3 years ago
Ryan is a nine-year-old boy whose father wants him to be a soccer player. Ryan does not have an aptitude for soccer, and keeps f
mihalych1998 [28]
A bad life when Ryan is older and will criticize his kids
8 0
3 years ago
Read 2 more answers
Please send help my way. 10 points to the brainliest
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The possible units for impulse would be:
<span>(N. s)
</span><span>(kg. m/s)</span>

4 0
4 years ago
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