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# What is the atmospheric pressure at 20000 feet?

## What is the atmospheric pressure at 20000 feet?

6.4 PSI
Pressure at 100m

Altitude Air Pressure
20,000 feet 6.4 PSI
30,000 feet 4.3 PSI
40,000 feet 2.7 PSI
50,000 feet 1.6 PSI

## Is there oxygen at 20000 feet?

For example, it can generate 20.9% oxygen at sea level to 9.5% oxygen at 20000 feet (6000 meters) above sea level.

Can you breathe above 20000 feet?

It is the lack of oxygen rather than the reduced air pressure that actually limits the height at which we can breathe. An elevation of about 20,000 feet above sea level is the maximum height at which sufficient oxygen exists in the air to sustain us.

### At what height is there no oxygen?

It refers to altitudes above a certain point where the amount of oxygen is insufficient to sustain human life for an extended time span. This point is generally tagged as 8,000 m (26,000 ft, less than 356 millibars of atmospheric pressure).

### What is the standard temperature at 20000 feet?

U.S. Standard Atmosphere Air Properties – Imperial (BG) Units

Geo-potential Altitude above Sea Level – h – (ft) Temperature – t – (oF) Acceleration of Gravity – g – (ft/s2)
20000 -12.26 32.112
25000 -30.05 32.097
30000 -47.83 32.082
35000 -65.61 32.066

What is the pressure at 30000 feet below sea level?

Example – Air pressure at Elevation 10000 m

Altitude Above or Below Sea Level Absolute Atmospheric Pressure
feet metre psia
25000 7620 5.45
30000 aprox. Mount Everest, Nepal – Tibet 9144 4.36
35000 10668 3.46

#### Can you breathe at 18000 feet?

At 10,000 feet above sea level, the normal saturation for a human breathing regular air is 87 percent. Go to 18,000 feet without supplemental oxygen and the saturation drops to 80 percent (thanks to the partial pressure of oxygen being just 21 percent of the atmospheric pressure at any altitude).

#### Can you breathe at 25000 feet?

At 25,000 feet the average EPT is 3 to 5 minutes. After about 20 minutes without supplemental oxygen, you will be pronounced dead. By the time you get to 35,000 feet, EPT drops to 30 to 60 seconds and it falls to nine to 15 seconds at 45,000.

Is it unhealthy to live in high altitude?

Altitude can protect against heart disease but can also damage the lungs and aggravate pre-existing conditions. And those who have not lived at high altitude long-term may want to think twice before retiring in mountain towns.

## Can you breathe at 24000 feet?

Above 28,000 to 30,000 feet with extra oxygen under pressure — normal consciousness and life can be sustained to 50,000 feet. Above 50,000 feet with any form of oxygen — sustained human life is not possible without a pressure suit like astronauts wear.

## What is the atmosphere temperature?

Temperature of atmosphere: The Earth’s temperature range in Fahrenheit is from 2,700 degrees Fahrenheit (1,500 degrees Celsius) in the uppermost atmosphere to a global average temperature of around 59 degrees Fahrenheit (15 degrees Celsius) near the surface.

What is the standard atmospheric temperature?

Standard temperature is defined as zero degrees Celsius (0 0C), which translates to 32 degrees Fahrenheit (32 0F) or 273.15 degrees kelvin (273.15 0K). This is essentially the freezing point of pure water at sea level, in air at standard pressure.

### What is the density altitude of the Earth’s atmosphere?

The density altitude is equivalent to about 12,500 feet in the standard atmosphere, which is less than 70% of sealevel air density.

### What is the temperature of the Earth’s atmosphere at different heights?

It is defined as having a temperature of 288.15 K at the sea level 0 km geo-potential height and 1013.25 hPa. The atmosphere are divided in. the Troposphere – ranging 0 to 11 km (36.000 ft) altitude.

What is the highest altitude that can sustain life on Earth?

An elevation of about 20,000 feet above sea level is the maximum height at which sufficient oxygen exists in the air to sustain us. By comparison, the summit of Mount Everest (the Earthâ€™s highest mountain) lies at 29,141 feet. Copyright 2021 Nexstar Media Inc. All rights reserved.

#### What is the maximum height at which sufficient oxygen exists in air?

An elevation of about 20,000 feet above sea level is the maximum height at which sufficient oxygen exists in the air to sustain us. By comparison, the summit of Mount Everest (the Earthâ€™s highest mountain) lies at 29,141 feet. Copyright 2021 Nexstar Media Inc.