0
Can density tell us what percentage of a floating object will be above the water?
Wiki User
∙ 8y ago
Yes, because density is measuring the volume of the object. So it shows how much percent of the object is submerged.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
How is the density of a floating object relate to the density of the fluid it is floating in?
If an item floats, Then it is less dense than the liquid it floats in. One can prove this using bernoulli's equation. To determine the weight of the floating object, take the volume of water displaced by the portion of the object below the fliud surface then multiply that by the density of the fluid. This process gives you the bouyant force on the floating object and therefore the weight. Then take that weight and divide it by the total volume of the. Object to get its density. Also note that if an item is suspended below the surface but. Above the bottom of the fluid body, then the item and fluid have equal density. If the item sinks to the bottom it has higher density than the fluid.
How do you calculate find the density of an object that floats?
If you can determine the volume fractions of the object that are above and below the water, then you can find the density of the object by multiplying the density of the fluid it floats in by the fraction of the volume that is below the surface of the liquid. Another, more complex way is to weigh the object alone then attach it to one arm of a balance to weigh the object when it is floating. As it floats it will displace an amount of liquid equal in weight to the total object. The decrease in weight will be proportional to the fraction of the object that is submerged. As an example: If an object weighed 100 grams out in the air but only required 20 grams to counterbalance its weight when it is floating, and the fluid it was floating in was water, then the density of the object would be (1 g/cubic centimeter)·(100-20)/100 = 0.8 g/cubic centimeter.
How do you know the density of an object if it floats on water?
You do not. A metal ship, with density well above that of water, will float.
How does the temperature of water affect the speed at which an object sinks?
Yes. As water is heated above 4oC it expands. With this change in volume comes a change in density. Less density means less bouyant force on the object in the water.
A piece of wood of relative density 0.25 float in a pail containing oil of relative density 0.81what is the percentage volume of the wood above the surface of the oil?
69.1%
How is the density of a floating object relate to the density of the fluid it is floating in?
If an item floats, Then it is less dense than the liquid it floats in. One can prove this using bernoulli's equation. To determine the weight of the floating object, take the volume of water displaced by the portion of the object below the fliud surface then multiply that by the density of the fluid. This process gives you the bouyant force on the floating object and therefore the weight. Then take that weight and divide it by the total volume of the. Object to get its density. Also note that if an item is suspended below the surface but. Above the bottom of the fluid body, then the item and fluid have equal density. If the item sinks to the bottom it has higher density than the fluid.
How do you calculate find the density of an object that floats?
If you can determine the volume fractions of the object that are above and below the water, then you can find the density of the object by multiplying the density of the fluid it floats in by the fraction of the volume that is below the surface of the liquid. Another, more complex way is to weigh the object alone then attach it to one arm of a balance to weigh the object when it is floating. As it floats it will displace an amount of liquid equal in weight to the total object. The decrease in weight will be proportional to the fraction of the object that is submerged. As an example: If an object weighed 100 grams out in the air but only required 20 grams to counterbalance its weight when it is floating, and the fluid it was floating in was water, then the density of the object would be (1 g/cubic centimeter)·(100-20)/100 = 0.8 g/cubic centimeter.
What determines an object will sink or float?
The Density of the object as long as its .99 grams then it will float because the object has to have less density than water in order to rise above the water.
How do you know the density of an object if it floats on water?
You do not. A metal ship, with density well above that of water, will float.
When is the pontoon is naturally stable?
When the center of buoyancy is directly above the center of gravity a floating object is stable.
What will happpen to an object that has less density than fresh water?
When you drop it into fresh water, it will bob up and down a few times,then come to rest partly submerged and partly above the water line.Anybody who sees it will exclaim "Oh look ! It is floating !"
What percentage of an iceberg is below water and why?
Any object that is floating will displace a mass of fluid equal to the mass of the floating object. Since the density of an iceberg is about 90% of the density of seawater most of the iceberg will be under water to create enough buoyancy to support the bit above the water. About 10% will be above the water. Pure ice has a density of about 916.7 kg/m³. Surface seawater has a typical density of about 1027 kg/m³. We can use these figures to work out that 1m³ of ice has a mass of 916.7kg. The amount of seawater that needs to be displaced to support this ice is 916 ÷ 1027 = 0.892m³. Since any object that is floating will displace a mass of fluid equal to the mass of the floating object we know that our 1m³ iceberg will have 0.892m³ under the water and 0.108m³ above the water. i.e. 89.2% underwater and 10.8% above the water. The percentages will be the same for any size iceberg. Since the density of Sea Water can vary and icebergs are not completely pure water there will be a bit of variation from these figures, a figure of 10% is normally used.
Why do some things float but not others?
Things that are less dense that water float while things that are more dense sink. An object's density has to be less than what it's floating in. If it's less, the object floats. If it's more, the object sinks. For more information about buoyancy see the related questions below. There is an exception to the above density proposal. Sometime a solid steel object which is more dense than water can "float" on the surface of water. Solid steel objects are able to "float" on the surface of water due to the surface tension of the water. Small solid steel objects such as double edged razor blades, needles and even paper clips can float on this surface tension film where water meets with the air above. The above objects have to be carefully lowered onto the surface of water and they will "float". To prove they are more dense than water, simply push them under the surface and they will sink to the bottom. See the related links to see a floating needle and floating paper clip.
If an object has a volume of 50 Cm3 and a mass of 956G what is the density of the object?
It is 100 g/cm3 which is way above the most dense element!
How does the temperature of water affect the speed at which an object sinks?
Yes. As water is heated above 4oC it expands. With this change in volume comes a change in density. Less density means less bouyant force on the object in the water.
Does the object float or sink the higher the density?
The the object you speak of is in water at approximately room temperature, then anything with a density above about 1 will sink; anything below 1 will float and anything at very close will be suspended in the water. So, to answer your question, high density equals sinking.
A piece of wood of relative density 0.25 float in a pail containing oil of relative density 0.81what is the percentage volume of the wood above the surface of the oil?
69.1%
