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makkiz [27]
3 years ago
11

Earth would cool dramatically if the amount of greenhouse gases were to _____.

Physics
2 answers:
Bingel [31]3 years ago
8 0
I think its B. Decrease cause If the Amount of greenhouse gases were reduced, then the temperature of the earth will cool
Anestetic [448]3 years ago
5 0

Answer:

b

Explanation:

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In a physics lab, light with a wavelength of 570 travels in air from a laser to a photocell in a time of 16.5 . When a slab of g
aliina [53]

Answer:

Wavelength is calculated as 213.9 nm

Solution:

As per the question:

Wavelength of light = 570 nm

Time, t = 16.5 ns

Thickness of glass slab, d = 0.865 ns

Time taken to travel from laser to the photocell, t' = 21.3

Speed of light in vacuum, c = 3\times 10^{8}\ m/s

Now,

To calculate the wavelength of light inside the glass:

After the insertion of the glass slab into the beam, the extra time taken by light to cover a thickness t = 0.865 m is:

t' - t = 21.3 - 16.5 = 4.8 ns

Thus

\frac{d}{\frac{c}{n}} - \frac{d}{v} = 4.8\times 10^{- 9}

\frac{0.8656}{\frac{c}{n}} - \frac{0.865}{v} = 4.8\times 10^{- 9}

where

n = refractive index of the medium

v = speed of light in medium

\frac{0.8656}{\frac{c}{n}} - \frac{0.865}{v} = 4.8\times 10^{- 9}

n = \frac{4.8\times 10^{- 9}\times 3.00\times 10^{8}}{0.865} + 1

n = 2.66

Now,

The wavelength in the glass:

\lambda' = \frac{\lambda }{n}

\lambda' = \frac{570}{2.66} = 213.9\ nm

5 0
3 years ago
Define refractive index.​
levacccp [35]
The refractive index of a material is a dimensionless number that describes how fast light travels through the material. It is defined as n={\frac {c}{v}}, where c is the speed of light in vacuum and v is the phase velocity of light in the medium.

the ratio of the velocity of light in a vacuum to its velocity in a specified medium.
8 0
2 years ago
Read 2 more answers
4application of energy from water
RSB [31]
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5 0
3 years ago
Mr. Jones's prescription calls for 1.04 tablets per day. Based on this information, how many tablets should Mr. Jones take per d
Serjik [45]

Due to the fact that no one can consume .04 of a tablet, we can round down this answer to 1. This means that Mr. Jones should take C- 1 tablet per day.

I hope I've helped! :)

7 0
3 years ago
Someone please help !!
masha68 [24]
I’m pretty sure it’s c.... hope it helps and hope it’s right.
7 0
3 years ago
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