# Calculate where the top of the atmosphere would be.

• Littlemac
So, 8500 m.In summary, the weight of the atmosphere above 1 square meter of Earth's surface is 100,000 N and the constant density of air is 1.2 kg/m^3. By converting the weight to kg and dividing it by the density, the top of the atmosphere can be calculated to be approximately 8500 m.
Littlemac
1. The weight of the atmosphere above 1 square meter of Earth's surface is about 100,000 N. Density, of course, decreases with altitude, but suppose the density of air were a constant 1.2 kg/m^3. Calculate where the top of the atmosphere would be.
- weight = 100,000 N (or 10197.16 kg)
- density = 1.2 kg/m^3

2. Convert the weight from N to kg then divide that answer (10197.16 kg) by the density (1.2 kg) to achieve the answer. Which comes out to 8497.63 m? (this is where I am having problems. I do not know which equation to use.)

Hi Mac,

No wonder you don't know which equation to use: you deleted '2. Homework Equations ' from the template !

However, you do mention under '3. Attempt at solution' () something that can be translated into $$m = \rho V$$ with m = mass, ##\rho## = density and V is volume. So you're doing fine, physically. (But PF rules are a bit unhappy )

One further comment about number of digits: if your given data are 'about 100000 N' and 'íffy' (the 1.2 kg/m3), then you don't answer in six digits that pretend an incredible accuracy. Two digits is sufficient.

## 1. What is the top of the atmosphere?

The top of the atmosphere is the highest point in Earth's atmosphere where the air is still dense enough to be considered part of the atmosphere.

## 2. How is the top of the atmosphere calculated?

The top of the atmosphere is typically calculated using the Kármán line, which is an imaginary boundary located at an altitude of 100 km above sea level. This is also known as the edge of space.

## 3. Why is it important to know where the top of the atmosphere is?

Knowing the location of the top of the atmosphere is important for understanding the behavior of Earth's atmosphere and its interactions with other systems, such as the sun and space weather. It also helps with satellite and spacecraft operations, as they need to operate within certain atmospheric conditions.

## 4. Can the top of the atmosphere change?

Yes, the top of the atmosphere can change due to various factors such as solar activity, atmospheric composition, and Earth's rotation. It can also vary based on location, as the atmosphere is thicker at the equator compared to the poles.

## 5. How does the top of the atmosphere affect climate change?

The top of the atmosphere plays a crucial role in regulating Earth's climate. It acts as a barrier, protecting us from harmful solar radiation and trapping heat to maintain a habitable temperature. However, increased levels of greenhouse gases can thicken the atmosphere, raising the top of the atmosphere and leading to a warmer climate.

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