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What is the volume of a 50 kg person who can just barely float in fresh water?
Wiki User
∙ 14y ago
Note: the fact that they are barely floating means that the person's density is equal to the density of water.
Given:
density of water = 1kg/litre
Let V be the volume of the person. We want densityperson = densitywater
=> 50kg/V=1kg/litre
=>V=50 litres
Therefore the volume of the person is 50 litres.
Wiki User
∙ 14y ago
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How do you make an egg to float in vinagar?
Simply put a fresh egg in a glass and cover it completely in vinegar. The egg will float because it has a lower density than the vinegar.
Why does an egg sink in fresh water but float in salt water but stays in the middle when pour water into salt water?
Eggs, water, floating.An egg doesn't float in fresh water but since salt water is more dense than fresh water, it has a better chance of floating in the salt water. The greater buoyant force allows the egg to float in the salt water, if salty enough.More explanationAn egg sinks in fresh water but not in salt water because fresh water is not as dense. In order for something to float, the buoyant force has to be greater than or equal to the weight of the object. The buoyant force is equal to the weight of the liquid that is displaced by the object. To figure out the weight of the water displaced you multiply the density of the water by the volume and then multiply that by gravity. The density of the fresh water is less than the density of the salt water, therefore the weight of the water displaced will be greater in the case of the salt water, resulting in a greater buoyant force.The more salt in water the more bouyant an object becomes. The salt makes the water more denser. Check out the dead sea. Most salt content in any lake or sea. The density of the salt water is greater than the density of the egg. Items sink if their own density is greater than the density of whatever they are trying to float in. Items float to the top if their density is less than the density of what they are floating in, and items hang in the middle if the densities are the same. Adding in the salt gives the water a greater density than the water did had before, so the egg doesn't float in freshwater.Did you know?A fresh egg will sink in fresh water but it will float in salty water. A rotten egg will float in fresh water.
What are the characteristics of salt?
-found in oceans, some salt lakes and marshes -salinity of ocean water is about 3.5% -contains more ions than all types of fresh water -more denser than fresh water, and easier to float
How does an salt make an egg float?
The separate layers formed because salt water is denser than pure water. Fresh water has a density of about 1.0 gram per ml of volume. Matter with higher density will sink in water; matter with lower density will float on top.The density of an egg is between that of water and salt water, so in your beaker, the egg balanced between the two layers.
Does an egg float in water with flour?
In a mixture of oil and water, the two will separate with the oil on top. If the water has enough solute in it (salt, sugar), the egg will float in the water, but not above the oil. An egg is denser than fresh water, but less dense than salt water. It is denser than most oils.
What is the volume of a 50 kg person who can barely float in fresh water?
Note: the fact that they are barely floating means that the person's density is equal to the density of water. Given: density of water = 1kg/litre Let V be the volume of the person. We want densityperson = densitywater => 50kg/V=1kg/litre =>V=50 litres Therefore the volume of the person is 50 litres.
If you float in salt water what will you do in fresh water?
If you just barely float in salt water, you will sink in fresh water.
Would a large metal ship float in the same volume of fresh water?
Metal ships are built to float.
Can you use the mass and volume to predict whether an object will sink or float in water?
Yes you can. If the object is one cubic meter in volume and it has a mass of less than one metric ton it should float in fresh water.
Why person not float in sea water?
A person will actually float in sea water, even more easily than in fresh water because of the sea's salt content.
Will a ball float higher in salt or fresh water?
Salt water is more buoyant than fresh water is, because salt water is slightly more dense. -- Anything that floats in salt water will float higher than it does in fresh water. -- Anything that sinks in salt water will sink slower than it does in fresh water. -- Anything that just barely floats in salt water may possibly sink in fresh water.
What density from a ping pong ball floating and a golf ball sinking?
The density of fresh water is 1.0. Anything with a density less than 1.0 will float; anything with a density higher than 1.0 will sink. Objects with densities a little less than 1 will float with most of the volume below the surface; objects with very low densities - like a ping-pong ball - will float mostly on top of the water. Human beings have a density very close to 1.0, so we barely float.
How can you tell if an object will sink or float before you throw it into a freshwater pond?
Calculate the object's density. If the density is less than that of fresh water it will float, if it is more it will sink in fresh water. Density is the mass of the object divided by its volume. The density of fresh water is 1000 kilograms per cubic meter, or 1 kg per litre.
Is it eaiser to float in salt water than fresh water?
It is easier to float in salt water than in fresh water.
Why can a person not float in fresh water but can in salt water what does that tell us about the density of salt water?
Salt water has higher density than the body of a person who floats on it, but the person's body may sink in less dense fresh water.
What can float in salt water but sink in fresh water?
i think it is ppeople because they float in salt water and sink in fresh water.
Will an object with the density less than one float in water?
Yes. Pure water has a density of 1.0, so anything with a lower density will float. Also note that adding salt or other contaminants to the water will generally raise the density, so things that will just barely sink in fresh water may float in salt water.
