answersLogoWhite

0

When a balloon is blown up by mouth, it will not float, but fall to the ground. This is because the air inside is the same density as the air outside. For a balloon to float up into the air, it must be inflated with a gas that is lighter than air - such as helium.

User Avatar

Wiki User

8y ago

What else can I help you with?

Continue Learning about General Science

Can a bowling ball float on water?

A golf ball sinks because it is tired of being whacked with big sticks and has decided to end it all by drowning itself. The golf ball sinks because it is heavier than the water it displaces. If the ball were put in a fluid with a higher density than ordinary water, like molten lead, it would actually float.


1 cubic mile filled with water that drains at 5 gallons per minute how long to drain?

456,389 years


Why does aluminum foil float?

The aluminum foil is less dense than the water which makesit float. Aluminum foil is not less dense than water. It is more dense. The reason that aluminum foil floats is that the surface tension of the water will hold the sheet of foil. If you still think that the aluminum foil is less dense than water, try floating a roll of foil in a bucket.


Does a football sink in seawater?

Not at the start because as you all ready know that a football does float on water. But after a long period of time it will finally of lost the air inside and them yes it will finally sink. But this just doesn't happen in sea water it will happen in any water. I hope that has asked your question.


Why do some things float in water?

It's All About DisplacementObjects in water displace some quantity of that water. The amount of water displaced on the mass and volume of the object. Objects float because the mass of the water they displace is greater than their own mass.Take, for example, a 10 cubic foot barrel placed in a fresh water lake. Visualize a small barrel about 18 inches in diameter by just over 2 feet long. Let's assume that the barrel weighs 10 pounds when empty.Water has a mass of about 62.4 pounds per cubic foot. The 10 cubic foot barrel, if sunk, would displace about 624 pounds of water. That is to say, before the barrel can sink, 624 pounds of water must be moved out of the way so the barrel can take its place. Another way to view this is that there is a 624 pound force trying to keep the barrel afloat.Let's imagine that our barrel is empty. The term "empty" here on Earth doesn't really mean it has nothing in it. It actually means it's filled with air. Air weighs about .08 pounds per cubic foot. If the barrel is filled with air, it would weigh 10.8 pounds (10 for the barrel itself plus .8 for the air). Since the volume of water that would need to be displaced to sink the barrel weighs 624 pounds, the 10.8 pound air-filled barrel will float. In fact it can only displace 10.8/62 cubic feet of water, or about .17 cubic feet. The barrel would float very high in the water - most of it would be above the surface. We'd have to strap another 613.2 pounds to our barrel before it would begin to sink.Imagine instead that the barrel is filled with something heavier - say mercury. Mercury weighs about 849 pounds per cubic foot. Our ten cubic foot barrel of mercury weighs 8500 pounds! (10 pounds for the barrel and 8490 for the mercury). It will easily displace the 624 pounds of water and will sink like... well... like a barrel full of mercury. That is, assuming you could roll an 8500 pound barrel as far as the lake to begin with.Floating MercuryLet's turn the question around. How many cubic feet of mercury could we put into our barrel and have it continue to float? Remember that if our barrel sinks, it will displace 10 cubic feet of water and that water weighs 624 pounds. We need to keep our 10 pound barrel afloat, so that leaves us 614 pounds. Our mercury has to weigh less than 614 pounds if we expect our barrel to float.Since mercury weighs 849 pounds per cubic foot, 614 pounds of it is about .723 cubic feet (614/849). If we put less than .723 cubic feet of mercury into our barrel and put it in the lake, it will float.Alert readers might point out that the portion of the barrel that isn't holding mercury probably contains air, which we need to account for. That's true but mercury is so dense that the numbers don't change much.What About Beets?I know what you're thinking. "What about beets?" you're thinking. Actually this exercise can be repeated with any substance we know the density of. That is, we know what's its mass is for a given volume. There's a link at the end of this answer to a table of densities and weights per cubic foot of scores of common substances. Will the barrel float if it's filled with beets? Check the table to figure it out.Specific GravityIt turns out that we don't need to imagine barrels filled with stuff to determine if that stuff will float in fresh water. We know that water weighs 62.4 pounds per cubic foot. Any material that weighs less than 62.4 pounds per cubic foot will float. If it weighs more, it will sink. That's pretty easy, but if we take a look at our table we'll notice something that will make our calculations even easier. That's something called specific gravity.Specific gravity is a measure of how dense something is when compared to fresh water (remember that density is how much something weighs for some given volume). The specific gravity of pure water is always 1. If a substance has a specific gravity of less that one, it will float. A substance with a specific gravity greater than one will sink.Our beets have a specific gravity of .72. They'll float. Birch wood, with a specific gravity of .71 floats even better than beets. Red brick, at 1.92, sinks like a brick. That's why it's somewhat easier to build a boat out of birch wood than it is out of brick. As for a boat made of beets, the mind boggles.

Related Questions

Shopping For Birthday Balloons?

Most people are familiar with birthday balloons. Rubber balloons are filled with helium or air and come in a variety of colors. Mylar balloons are most often filled with helium; they have a metallic sheen, and have a variety of designs printed on them. Rubber balloons are also called latex balloons. These balloons often do not last long, because the helium leaks out through tiny pores in the rubber. Filling the balloon with plain air will cause it to last much longer, but of course, such balloons will not float. On the other hand, you may not want your balloons to last long past the birthday celebration; random balloons floating around the house can be annoying. If you do want them to last, however, and you prefer rubber balloons, you can ask if your store has any balloons that have been treated with Hi Float. Hi Float is a substance used to coat the inside of rubber balloons to prevent the helium from leaking out. Balloons treated with Hi Float last up to 25 times longer than regular balloons. If you want to go the mylar route, you’ll have a lot of options. There are many shapes and colors available. There are many super-sized mylar balloons as well, which can be exciting to receive. Mylar balloons also last much longer than untreated rubber balloons, because there are few tiny holes for the helium to slip through. Some can even last for several weeks! Be careful with mylar balloons around power lines, however; they can conduct electricity, and balloons that come in contact with the lines are often the cause of outages. Be careful around children with any balloons, because they can be a choking hazard when they’re uninflated or have burst. In addition, resist the temptation to breathe in the helium; when you breathe in helium, you’re not breathing in air, so it’s like you’re not breathing at all. You can asphyxiate, even die. And that wouldn’t make for a very happy birthday at all.


Which gas is used to fill balloons?

Helium is normally used in balloons that float. Helium is the second lightest gas. Hydrogen is lighter, but it is also flammable and thus dangerous.When normal air is used to fill a balloon, the balloon will not be buoyant.If you fill a balloon with air from your lungs, there is a bit more water vapor and a bit more carbon dioxide and a bit less oxygen in the air inside the balloon, but that has a small impact on the buoyancy.The larger balloons that carry people are called hot air balloons because they are filled with hot air. They are buoyant because the hot air is fractionally lighter than normal air but there is a lot of it.Weather balloons and party balloons both use helium gas.As long as the gas plus the balloon is lighter than the air it displaces, the balloon will float in the air.Helium is normally used in balloons that float. Helium is the second lightest gas. Hydrogen is lighter, but it is also flammable and thus dangerous.When normal air is used to fill a balloon, the balloon will not be buoyant.If you fill a balloon with air from your lungs, there is a bit more water vapor and a bit more carbon dioxide and a bit less oxygen in the air inside the balloon, but that has a small impact on the buoyancy.The larger balloons that carry people are called hot air balloons because they are filled with hot air. They are buoyant because the hot air is fractionally lighter than normal air but there is a lot of it.Weather balloons and party balloons both use helium gas.As long as the gas plus the balloon is lighter than the air it displaces, the balloon will float in the air.Helium, warm air


How are balloons and bladders alike?

Balloons and bladders are both flexible containers that can expand and contract to hold air or liquid. They are both used in various applications such as decorations, transportation, and storage. Additionally, both balloons and bladders can pop or burst if they are subjected to too much pressure.


How can I create a display using permanent balloons that will last for a long time?

To create a long-lasting display using permanent balloons, consider using high-quality, durable balloons made of materials like Mylar or foil. These balloons are less likely to deflate quickly compared to traditional latex balloons. Additionally, you can fill the balloons with a mixture of helium and a special gas called Hi-Float, which helps them stay inflated for a longer period of time. Finally, ensure that the display is kept in a cool, dry place away from direct sunlight and sharp objects to prevent damage and prolong its lifespan.


How do you make a balloon float again?

There are a few things you can do to help increase float time. First, be sure to tie a tight knot in the neck of the balloon. The balloons included in Balloon Time have extra-long necks for easier tying. If you are attaching ribbons to the balloons, be sure to tie the ribbon below the knot. For special occasions that require prolonged float time, you can also purchase and add ULTRA HI-FLOAT® product to your Balloon Time balloons.


How do you declare a function to return long float?

long float myfun();


Do clothes float or sink?

it will float as long as it is not fully covered water.


What balloon can fly higher round shaped balloons or long balloons?

Ask someone else.


How long can balloons stay up?

a lot.


Does float have a short or long vowel?

"Float" has a long vowel sound for the letter O.


What is the range of float?

i wann't ask the range of double float and long double float??


Is the word float long o or short o sound?

The word "float" has a long o sound.