What is that small little hole at the bottom of airplane windows?

What is that small little hole at the bottom of airplane windows?
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1 Answer

Answer :

the failsafe pane vent. the little hole allows cabin air to flow into the space between it and the outer pane. if the outer window fails, the air between blows out and the inside pane keeps the cabin (relatively) sealed.
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Related questions

A sufficiently long closed organ pipe has a small hole at its bottom. Initially the pipe is empty. What poured into the pipe at a constant rate. The f

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What is the molecular mass of a gas that effuses through a small hole at twice the rate as oxygen gas at the same temperature. (The molecular mass of O2 is 32.) w) 8.0 atomic mass units x) 16 atomic mass units y) 48 atomic mass units z) 64 atomic mass units

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Who made the model of the airplane by watching the birds fly ?

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Last Answer : (1) its KE increases Explanation: The kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

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What does the little number to the bottom right of a number mean in algebraic expressions?

Description : What does the little number to the bottom right of a number mean in algebraic expressions?

Last Answer : answer:http://mathforum.org/library/drmath/view/61321.html Date: 09/30/2002 at 23:37:35 From: Doctor Peterson Subject: Re: Subscript vs. Superscipt Hi, Kevin. A subscript is just a letter or ... questions, feel free to write back. - Doctor Peterson, The Math Forum http://mathforum.org/dr.math/

I have a little blood blister (about the size of a dime) on the bottom of my left foot. It hurts, but not in a crippling way. I was wondering if I could continue walking on the treadmill?

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Windows XP: Taskbar is on the right (vertically), how do I get it back on the bottom (horizontal)?

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What is the formula for calculating the rate of water escaping through a hole in a pipe?

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What exactly happens when a (hypothetical) antimatter black hole merges with a 'normal' black hole?

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What is a black hole ?

Description : What is a black hole ?

Last Answer : When the mass of a star exceeds the mass of five solar masses, its mass tends to shrink indefinitely if the mass of the star is too large after a supernova explosion. The object created in this way is called black hole.

How is a black hole created ?

Description : How is a black hole created ?

Last Answer : Black Hole - Also known as Black Hole or Black Beaver. When a star burns out its fuel, the stars begin to shrink. Larger stars, usually located between galaxies, create black holes through supernova explosions, the latest consequence of their evolution.

In heating frozen foods in sealed pouches in microwaves, why do you first poke holes in the pouch? (1) To prevent the steam pres-sure from bursting open the pouch (2) To allow the heat to get into the food through the hole (3) To allow the microwaves to get into the food through the holes (4) To allow the aroma of the food to come out through the holes

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Last Answer : (1) To prevent the steam pres-sure from bursting open the pouch Explanation: Anything in a tight skin or shell can explode in a microwave because the water inside can expand and burst through. It ... of shells and holes should be poked in the plastic wrap or sealed pouches of frozen packaged foods.

When a ring of metal is heated what happens to its hole? (1) expands (2) contracts (3) it expands or contracts according to its diameter (4) it expands or contracts according to its coefficient of expansion

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In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge? (1) Black hole (2) Ozone hole (3) Asteroid belt (4) White hole

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A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole? (1) Increase (2) Decrease (3) Remain constant (4) Will increase first and then decrease

Description : A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole? (1) Increase (2) Decrease (3) Remain constant (4) Will increase first and then decrease

Last Answer : (1) Increase Explanation: Assuming the disc is uniform and isotropic (the same in different directions), the hole will expand in the same ratio as the metal. It is because the thermal expansion equation ... is made out of metal. And if the circumference of the hole expands, so does the diameter.

If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Description : If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Last Answer : (1) Increases Explanation: When a metal plate with a circular hole at its centre is heated, definitely along with the areal expansion of the plate the diameter of the circular hole also increases. Using ... of expansions, we find that the hole radius increases at the same linear rate as the metal.

A copper disc has a hole. If the disc is heated, the size of the hole - (1) increases (2) decreases (3) No change (4) first increases and than decreases

Description : A copper disc has a hole. If the disc is heated, the size of the hole - (1) increases (2) decreases (3) No change (4) first increases and than decreases

Last Answer : (1) increases Explanation: When a metal plate with a circular hole at its centre is heated, definitely along with the areal expansion of the plate the diameter (sum of two radii) of the circular hole also increases.

The mass of a star is two times the mass of the Sun. How it will come to an end? (1) Neutron Star (2) Black hole (3) White Dwarf (4) Red Giant

Description : The mass of a star is two times the mass of the Sun. How it will come to an end? (1) Neutron Star (2) Black hole (3) White Dwarf (4) Red Giant

Last Answer : (1) Neutron Star Explanation: The mass of a star which is two times the mass of the sun turns into a neutron star. A neutron star is a type of stellar remnant that can ... entirely of neutrons, which are subatomic particles without electrical charge and with slightly larger mass than protons.

The ozone hole that has been detected lies in the atmosphere above – (1) Arctic Ocean (2) Antarctica (3) India (4) Alaska

Description : The ozone hole that has been detected lies in the atmosphere above – (1) Arctic Ocean (2) Antarctica (3) India (4) Alaska

Last Answer : (2) Antarctica Explanation: Ozone layer, that is, the layer of life-protecting ozone found at the top of the stratosphere. Ozone is formed in the earth's stratosphere and is critical to ... stratosphere and that some human-released chemicals are speeding up the breakdown of ozone in the atmosphere.

It has been said that the universe will die an "entropy death". This means that: w) the universe will eventually explode. x) the universe will be at the same temperature everywhere. y) the universe will collapse into a black hole. z) matter and antimatter will never combine.

Description : It has been said that the universe will die an "entropy death". This means that: w) the universe will eventually explode. x) the universe will be at the same temperature everywhere. y) the universe will collapse into a black hole. z) matter and antimatter will never combine.

Last Answer : ANSWER: X -- THE UNIVERSE WILL BE AT THE SAME TEMPERATURE EVERYWHERE.  

In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge? (1) Black hole (2) Ozone hole (3) Asteroid belt (4) White hole

Description : In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge? (1) Black hole (2) Ozone hole (3) Asteroid belt (4) White hole

Last Answer : White hole

A copper disc has a hole. If the disc is heated, the size of the hole (1) increases (2) decreases (3) No change (4) first increases and than decreases

Description : A copper disc has a hole. If the disc is heated, the size of the hole (1) increases (2) decreases (3) No change (4) first increases and than decreases

Last Answer : increases

In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch? (1) To prevent the steam pressure from bursting open the pouch (2) To allow the heat to get into the food through the hole (3) To allow the microwaves to get into the food through the holes (4) To allow the aroma of the food to come out through the holes

Description : In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch? (1) To prevent the steam pressure from bursting open the pouch (2) To allow the heat to get into ... into the food through the holes (4) To allow the aroma of the food to come out through the holes

Last Answer : To prevent the steam pressure from bursting open the pouch

If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Description : If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Last Answer : Increases

A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ? (1) Increase (2) Dacrease (3) Remain constant (4) Will increase first and then dcrease

Description : A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ? (1) Increase (2) Dacrease (3) Remain constant (4) Will increase first and then dcrease

Last Answer : Increase

The ozone hole that has been detected lies in the atmosphere above (1) Arctic Ocean (2) Antarctica (3) India (4) Alaska

Description : The ozone hole that has been detected lies in the atmosphere above (1) Arctic Ocean (2) Antarctica (3) India (4) Alaska

Last Answer : Antarctica

The mass of a star is two times the mass of the Sun. How it will come to an end ? (1) Neutron Star (2) Black hole (3) White Dwarf (4) Red Giant

Description : The mass of a star is two times the mass of the Sun. How it will come to an end ? (1) Neutron Star (2) Black hole (3) White Dwarf (4) Red Giant

Last Answer : Neutron Star

When a ring of metal is heated what happens to its hole ? (1) expands (2) contracts (3) it expands or contracts according to its diameter (4) it expands or contracts according to its coefficient of expansion

Description : When a ring of metal is heated what happens to its hole ? (1) expands (2) contracts (3) it expands or contracts according to its diameter (4) it expands or contracts according to its coefficient of expansion

Last Answer : expands

How do I punch a small hole into a business card...

Description : How do I punch a small hole into a business card...

Last Answer : You can buy hole punches that make a smaller hole at a craft or art store.

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Description : I want to know if it is possible to cut a small (1/8-1/4") hole in a glass picture frame without breaking the whole thing.

Last Answer : It is very hard to do that. There are special bits one can buy at most hardware stores for drilling through glass. I tried once, but shattered the glass. It takes a lot of patience and a ... would be to replace the glass with plexiglass and drill ha hole in that. Plexiglass is easier to drill.

While mixing sand, gravel, and cement for the foundation of a house, a worker noticed a small bird hopping along the top of the foundation wall. The bird misjudged a hop and fell down one of the holes between the blocks. The bird was down too far for anyone to reach it and the hole was too small for it to fly out of. Someone suggested using two sticks to reach down into the hole and pull the bird out, but this idea was rejected for fear it would injure the fragile bird. What would be the easiest way to get the bird out of the hole without injuring it? -Riddles

Description : While mixing sand, gravel, and cement for the foundation of a house, a worker noticed a small bird hopping along the top of the foundation wall. The bird misjudged a hop and fell down one of the holes ... . What would be the easiest way to get the bird out of the hole without injuring it? -Riddles

Last Answer : Since they had plenty of sand available, they could pour a little at a time into the hole. The bird would constantly keep shifting its position so that it stood on the rising sand.

7.Fine beam of light entering through a small hole in a dark room,illuminates the particles in its path.Name the process associated and Explain. -Chemistry

Description : 7.Fine beam of light entering through a small hole in a dark room,illuminates the particles in its path.Name the process associated and Explain. -Chemistry

Last Answer : When fine beam of light entering through a small hole in a dark room, it illuminates the particle in its paths because of collision of particles of air and dust. This happens because of the Tyndall effect.

How small can a black hole be? -Space

Description : How small can a black hole be? -Space

Last Answer : There's no minimum size. There's a minimum density. Stars turn themselves into black holes when they exhaust their fuel and collapse. For that to yield a black hole, they need to start off with around 25 solar masses.

Roughly how small would you have to squish the Earth for it to become a black hole? -Space

Description : Roughly how small would you have to squish the Earth for it to become a black hole? -Space

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