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2 years ago

Answer fast !!!!!!! pleaseee

Physics

2 answers:

Svetllana [295]2 years ago

8 0

Magnetic fields

it’s the only answer that goes with the question

wariber [46]2 years ago

5 0

Answer: Magnetic Fields

Explanation:

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Mrs. Newman’s class decides to perform an experiment during a class connect session to determine how long it takes different obj

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2 years ago

Compare between chromosphere, corona and photosphere

gladu [14]

Answer:

Explained

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Photosphere: The lowest layer of the sun is called photo sphere . It is about 300 miles thick from the surface. It is the source of solar flares. It is marked by bright bubbling granules of plasma.

chromosphere emits a reddish glow as the super heated hydrogen burns off but the red rim can only be seen during total solar eclipse.

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3 years ago

What is the weight of a column of air with cross-sectional area 4. 5 m^2 extending from earth's surface to the top of the atmosp

sineoko [7]

The weight of a column of air with cross-sectional area 4. 5 m^2 extending from earth's surface to the top of the atmosphere is, 4.56*10^5N.

To find the answer, we have to know about the pressure.

<h3>How to find the weight of a column of air?</h3>

As we know that the expression of pressure as,

$P=\frac{F}{A}$

where; F is the force, here it is equal to the weight of the air column, and A is the area of cross section.

It is given that, the air column is extending from earth's surface to the top of the atmosphere, thus, the pressure will be atmospheric pressure,

$P=1atm=1.013*10^5Pascals$

From this, the value of weight will be,

$F=mg=P*A=1.013*10^5*4.5=4.56*10^5N$

Thus, we can conclude that, the weight of a column of air with cross-sectional area 4. 5 m^2 extending from earth's surface to the top of the atmosphere is, 4.56*10^5N.

Learn more about the pressure here:

brainly.com/question/12830237

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1 year ago