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3 years ago

What is the relationship between temperature and altitude in the stratosphere? (2 points).

1 answer:

8 0

As altitude increases, temperature increases. The stratosphere is the part of the atmosphere that starts in the tropopause and ends in the estratopause. In the troposphere, the air is close to the Earth surface. The air surface can absorb more sunlight energy than the air, so the Earth surface heats the air. As you go higher, the distance to the Earth surface is higher, so the temperature is lower. The troposphere ends in the tropopause, where this trend changes. In the estratopause, there is a lot of ozone, which absorbs the dangerous UV radiation and converts into heat. That heat warms the air. So the air which is close to the estratopause is warm because of the heat released by the ozone reactions. The tropopause is far from the Earth surface and far from the ozone layer, that’s why it is cold. So the tropopause is cold and the estratopause is warm, which means: the air becomes warmer as you rise above the tropopause until you get to the estratopause.

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Reimbursement means that a client is A. able to apply for healthcare insurance and refunded for a partial sum of the payment pla

PSYCHO15rus [73]

Answer:

Option-(C): Refunded by an insurance company for costs incurred according to an agreement drawn up

Explanation:

Reimbursement:

There are certain institutes or insurance company, which holds the capacity to refund any cost or fee spent by its client. As the client will paid the due amount as per an agreement done before and as both the parties have agreed upon those terms prior to the situation faced.

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4 years ago

When does a skydiver achieve terminal velocity? when gravity equals air resistance when gravity is greater than air resistance w

ElenaW [278]

Answer:

when gravity equals air resistance

Explanation:

There are two forces acting on a skydiver falling down:

1) Gravity - this force acts downward, and it is constant during the whole fall, because its magnitude is given by

$F=mg$

where m is the mass of the skydiver and g the gravitational acceleration. Both quantities are constant, so the force of gravity is constant.

2) Air resistance - this force acts upward, and it is not constant: it is proportional to the velocity of the skydiver

$F=kv$

where k is a constant and v is the velocity. Therefore, as the skydiver falls down, its velocity increases and the air resistance increases as well.

The equation of forces for the skydiver is therefore:

$mg-kv=ma$

where a is the skydiver's acceleration. At the beginning of the fall, $mg>kv$ , so the skydiver accelerates towards the ground. However, as he accelerates, the air resistance $kv$ increases, till the moment at which air resistance becomes equal to gravity:

$mg=kv$

when this condition occurs, then the acceleration becomes zero, so the skydiver no longer accelerates and continues his fall at constant speed. This constant speed is called terminal velocity, and so it occurs when

gravity equals air resistance

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3 years ago

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How much energy is stored in a spring that is compressed 0.650m if the spring constant is 725N/m?

lbvjy [14]

Answer:

53.8Joule

Explanation:

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3 years ago

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3 years ago

Blood is more viscous than water. This is because it

JulijaS [17]

Answer:

Blood is thicker than water due primarily to the presence of red blood cells

Answer: This is because it becomes more dense when cells are added

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4 years ago