A container with 1 lb of  water  ,will a 2 lbs object placed in it Float.?
152879
No, it will not.  The other answers to this question are on the right track, in that they point out that an object's density is the key thing in most situations, since if it is less dense than the fluid it is in, it will displace fluid equal to its weight before it is completely submerged, and hence float.\n\nBut in *this* problem, we are told from the outset that there is not enough water to be displaced.  Therefore, the object will displace all the water, all 1 lb. of it, and still not have displaced enough water to equal its weight.  Therefore, it will rest on the bottom, i.e. not float.
411587
You are right!!! The 1% solid part remains the same weight (1kg). If the water on the second day is 98%, then the solid must now be 2%. If it is now 2%, it still weighs 1kg, so the water weight is now 49kg. 49 + 1 = 50. \n\nAnother way to look at it is, the solid part is now double the amount it was, but since it didnt grow (did it?), the water must be half what it was.\n\nLets assume that on day X the water is reduced to 50%. The solid part is now 50%, but still weighs 1kg, so the water must also weigh 1kg, 1kg + 1kg = 2kg.
971927
Sure, take a plastic bottle, like an empty coke bottle.  Punch a couple of holes in it, and put in a little piece of cork or styrofoam.  Fill it with real salty water (you'll need a lot of salt!).  Since salt water is heavier than pure water, it will sink, but after awhile the salt water will run out of the holes and fresh water will replace it, and the cork or styrofoam will make it float.  You'll have to experiment with the size of the piece of styrofoam, it needs to be small so it barely makes the bottle float.\n\nGood luck!\n\nAnd make sure your floating piece isn't going to soak up water, or of course it won't work.
949111
No, the drag coefficient in the water would be too much. Imagine the amount of surface area in the water that you would have to push against.
872931
It's not based on the object weight (or mass) ... it's based on the object volume.\n\nI'm going to assume your cylinder is heavier than water and will be completely submerged.\n\nVolume = (pi)*(radius)*(radius)*(height)\n= 3.14159 * 19 * 19 * 33\n= 37425 in3 = 21.658 ft3\n\nVolume of water (at 25 C = 77 F) = (ft3) * (7.47)\n= 21.658 * 7.47\n= 161.788 gallons\n\nYour cylinder will displace approximately 162 gallons.
121797
Adding air to a tank doesn’t make it float better. Air has weight. ADDING air to anything will make it heavier. The tank would float best if you could take all the air out of it altogether, but you can’t do that without it collapsing. In fact if you could take all the air out of the tank without it collapsing it would float so well that it would be possible for it to float away on the air like a helium balloon. \n\nI kid you not.\n\nSo why does adding air to a tank APPEAR to make it float better? It’s not because you add air to the tank, it is because you are forcing water out of the tank. Although air has weight it weighs much less than water. When you add more air you force out more water. That makes the tank relatively lighter and it floats better.
383210
So Archimedes was lying in one of those Greek bathhouses when he suddenly realized that (besides the rise in water level) he was FLOATING.\n\nThen he came up with his principle in buoyancy, that the weight of water displaced equals the weight of the buoyant object.  This has many uses in the calculations of forces and whether or not an object would float. (You would like to know if your boat can float before getting on, wouldn't you?)
462517
If there are bubbles of air then you will have less liquid than you are intending to have. Assuming you are calculating density via measurementof mass then the mass you get will be less than it should be for that volume of that liquid. As a result the calculated density will work out lower than it should do.
208900
Specific gravity.\n\nPure water has a density of 1 (the mass of 1 cubic centimetre of pure water is precisely 1 gramme), if something was twice as heavy as water (i.e. it has twice the mass) it would have a specific gravity of 2, 6 times as heavy and the SG would be 6.  If something was half as light as water it's SG would be 0.5 and so on.
613715
First find the volume of the object, i.e metal, by placing it in water and then u know the amount of water displaced.\nIf it displaces half the water than it's weight, then u know that it's specific gravity is twice that of water.
698894
An object will float in water if its density is less than the density of water.  Solid steel is more dense than water so it sinks.\nA steel boat is hollow and filled with air.  Its average density is less than a solid piece of steel.  If this average density is less than water the boat will float.  Of course if the boat becomes swamped  (filled with water) then the average density increases and the boat sinks.
481877
Your other answerers are on the right track.  When a boat floats, it displaces a volume of water with a weight equal to the weight of the boat.\n\nSo, the heavier the liquid in which the boat is floating, the less liquid it must displace in order to float, and thus, the higher it will float.\n\nThis means that the basic question is which is more dense (and so, heavier), saltwater or freshwater.  And, the answer is that saltwater is somewhere between 2.5% and 3.5% more dense than freshwater.
976396
1 G, I dont see how it can be zero otherwise it would float off!\n\nOK call me an idiot...I have just read the other answers lol
883842
the pressure will be higher but the density won't change, it can't possibly change if it's a sealed, rigid container, density is mass/volume and you aren't changing the mass or the volume, therefore the density will be unchanged
408700
The following link is a pdf slide show that gives examples of buoyancy calculations and theory of floating objects.\n\nhttp://www.colorado.edu/physics/phys1010/phys1010_fa05/lectures/class12-09-29.pdf
218971
Any object will float as long as it displaces a volume of liquid that is more massive than itself. Take the aluminum boat and fold it into a block of aluminum and it sinks. But due to the shape of the boat, the mass of the aluminum,plus you, and your fishing gear, is still less than the volume of water pushed aside by the hull of the boat. So, you float.
196335
A ship can float on water because the desity of the ship is less than that of the water arround it.  When I speak of the Density, I speak of the ship as a whole.  The materials can be much more dense than water including steel or even Concrete.  What matters is what is in the ship.  If there is mostly air or something light in the ship, the average desity of the ship is very low and the ship will float high in the water.  If there is a lot of heavy cargo, the ship will float low in the water, unless too much cargo is loaded that is too heavy, then the ship could actually sink.\nWhen the ship is sitting on the water, it is displacing a certain amount of water.  The surrounding water then places pressure upon the ship pushing inward and upward.  The ship, not weighing as much as the water that is displaced is held up by this pressure.  If the wieght of the ship becomes more than what is displaced, then the ship will sink.