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If you have 2 plastic jugs filled with water How can you put all the water into a barrel without using the jugs or any dividers and still tell which water came from which jug?
Wiki User
∙ 16y ago
freeze both of the waters and them put them in the barrel. you could still tell them apart since they will be frozen. freeze the water from both jugs and put them in the barrell you could mix the water with (different) coloured jello and lots of sugar so that they harden into two non-mixing lumps in the barral. And not only have you solved the riddle but have a yummy snack afterwards.
Wiki User
∙ 16y ago
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What house hold items represent the vacuole?
If you are making a cell model you can either use plastic bags or balloons filled with water.
What is the hardest plastic?
As of November 2006, the stiffest unreinforcedcommercially available material was 'Primospire' polyphenylene from Solvay Chemicals, with a flexural modulus of 1.2 Million PSI & tensile strength of 30,000 PSI.Glass-filled materials may achieve higher stiffness, but at lower strength.
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.
What material is the worst conductor of heat?
the worst conductors of heat are wood, plastic, rubber, and cloth.
Why are plastics poorer conductors than metals?
Metals are more useful as a conductor than plastics. It is because the plastics are a matter that is filled with covalent bonds and it blocks the electrons flow while metals share and facilitate the electron flow, and also because a large pool of electron does a metal have while plastic don't have.
How do you use a checkerboard cake pan?
There are several ways of using it: Put the dividers into the pan. Pour batter for white and chocolate cake into alternating squares to make a checkerboard pattern. Once they are all filled, you pull the dividers out and then bake. Bake the cake with the dividers in place and then remove the dividers and Ice the blocks together. Bake a chocolate cake with the divider in place and bake a white cake with the dividers in place. Then arrange the squares into a double size cake and ice into place.
Where is the barrel filled with explosives on poptropica?
the barrel is at the farthest corner on the ground in china
A barrel of Windex is 34 full if each spray bottleolds120 barrel of Windex how many bottles can be filled?
15
If you put a person in a barrel of water will it weigh more or less than if the barrel was filled with only water?
More
The pressure at the bottom of a barrel filled with liquid does NOT depend on the?
liquid density
What are beanie babies filled with?
Beanie Babies are filled with "plastic pellets" rather than stuffing.
What are shotgun shells filled with?
Shotgun shells are centerfire but are made up of a paper or plastic cylinder with a brass base or head. The shell is filled with powder followed by a cupped plastic wad filled with birdshot or much larger buckshot.
A bottomless barrel shaped like a hive. It is filled with flesh and the flesh is alive ... what is it?
A thimble
How long does a plastic jug filled with water last?
Indefinitely, but some say the water will be tainted by the plastic and undrinkable.
What is a fish tank made of?
Glass. Or thick Plastic. Filled with water. Get smart -_-
On a sensitive balance weigh an empty flat thin plastic bag Then weigh the bag filled with air Will the readings differ Why?
it is found that the weight of an empty flat thin plastic bag is not changed when the bag is filled with air why not?
Does plastic have oxygen in it?
no you tool it doesn't. unless of course it is a bottle and it was filled with oxygen? Yes it does...
