# Question: How Far Can You See At 30000 Feet?

## Can a human survive at 35000 feet?

1 Answer.

Long term, no, it is not.

Any exposure to pressure altitudes over 26,000 ft will eventually cause death from hypoxia, even with acclimation to the higher altitudes.

There is a period referred to as Time Of Useful Consciousness (ToC) associated with hypoxia..

## At what altitude can a human not 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. By comparison, the summit of Mount Everest (the Earth’s highest mountain) lies at 29,141 feet.

## Why do planes not fly over the Pacific?

The primary reason airplanes don’t fly over the Pacific Ocean is because curved routes are shorter than straight routes. Flat maps are somewhat confusing because the Earth itself isn’t flat. Rather, it’s spherical. As a result, straight routes don’t offer the shortest distance between two locations.

## How far can you see at 35000 feet?

If you look up into space you are looking through about 62 miles of atmosphere, at 35,000 feet you will be looking through almost 230 miles of atmosphere to see the horizon.

## What is the longest flight in the world?

Singapore AirlinesSingapore Airlines’ direct flight from Singapore to Newark, New Jersey, is currently the longest flight in the world, lasting around 18 hours and 30 minutes and traveling 9,534 miles. Business Insider documented a flight from Newark to Singapore with a business-class ticket on the Airbus A350-900ULR.

## How cold is it at 35000 feet in the air?

How cold is it up there? The higher you get, the colder it gets, up until 40,000 feet. If the temperature at ground level was 20C, at 40,000 feet it would be -57C. At 35,000 feet the air temperature is about -54C.

## Can you see a plane at 30000 feet?

Nowadays, a flight’s speed, course and altitude are displayed on the screen. So, at 10,000 feet you can see 122 miles, at 30,000 feet you can see 211 miles, and at 40,000 feet you can see 244 miles. …

## Can you breathe 30000 feet?

Sea level to 10,000 feet cabin altitude — no problem. … 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.

## Why is it forbidden to fly over the Taj Mahal?

The Taj Mahal Although there’s no official no-fly zone over the ivory mausoleum, there is a mile-and-a-half radius above the historic site which security agencies consider to be a no-go when it comes to flying. This is because of security reasons – as well as risks to the building’s white marble from plane pollution.

## How many feet up is space?

264,000 feetIn the US, “space” begins at 80.4km (50 miles), or 264,000 feet. General international consensus sets a similar limit for the start of space as 100km (62 miles), or 380,000 feet.

## Do planes dump poop?

Even as the matter is sub judice, people wonder if incidents on poop droppings actually happen? We looked into the stinky matter and spoke to aviation experts to dig out the facts. “There is no system to dump human waste mid-air in any modern aircraft,” asserts H S Khola, former director general of civil aviation.

## Can you breathe at 35000 feet?

Whether you are flying aboard a small Cessna or a jumbo-sized Airbus A380, you can breathe freely inside the cabin without wearing a mask or respirator. Even at a cruising altitude of 35,000 feet, you shouldn’t have trouble breathing.

## Why can’t planes fly over Messi’s house?

“You can’t fly over where Messi lives, this doesn’t happen anywhere in the world”, Javier Sánchez-Prieto explained. However, the ban has nothing to do with Messi’s presence there, simply that the area of Gavà has an environmental restriction that bans planes from crossing this airspace.

## How cold is it at 100000 feet?

U.S. Standard Atmosphere Air Properties – Imperial (BG) UnitsGeo-potential Altitude above Sea Level – h – (ft)Temperature – t – (oF)Acceleration of Gravity – g – (ft/s2)80000-61.9831.92990000-56.5431.897100000-51.1031.86815000019.4031.71716 more rows

## How far can humans see?

Based on the curve of the Earth: Standing on a flat surface with your eyes about 5 feet off the ground, the farthest edge that you can see is about 3 miles away.

## What is the average temperature at 35000 feet?

At 35,000 ft. (11,000 m), the typical altitude of a commercial jet, the air pressure drops to less than a quarter of its value at sea level, and the outside temperature drops below negative 60 degrees Fahrenheit (negative 51 degrees Celsius), according to The Engineering Toolbox.

## What speed does an aircraft take off at?

Typical takeoff air speeds for jetliners are in the range of 240–285 km/h (130–154 kn; 149–177 mph). Light aircraft, such as a Cessna 150, take off at around 100 km/h (54 kn; 62 mph). Ultralights have even lower takeoff speeds.

## How far can you see at 100000 feet?

How far away is the horizon?Height (meters)Distance (km)Height(feet)5000252.316,400.010,000356.932,800.012,000391.039,360.0100,0001,132.7328,000.024 more rows•Jan 15, 2009