So Pure materials ,they can not have same densities. (Assuming they are not isotopes of each other.) But mixtures, compounds or different phases can have same densities.
How can I tell if an object will float or sink? If an object weighs more than an equal volume of water, it is more dense and will sink; if it weighs less than an equal volume of water, it is less dense and will float.
Answer: Compare the density of the object in question to the density of water. If its density is less than water, it will float. For example, oak floats because its density is 0.7 g/cm³. If the density of an object is greater than water, it will sink.
In this case, the object has the same density as the water. This object, when immersed in water, will displace a certain amount of water. Since the densities of the object and water are same, the buoyant force will be exactly equal to the weight of the object and this will be a case of neutral buoyancy.
1 having little or no attachment. 2 (of an organ or part) displaced from the normal position or abnormally movable. a floating kidney. 3 not definitely attached to one place or policy; uncommitted or unfixed. the floating vote.
If the object is denser than water it is more massive than the water that it displaces. This means that the object experiences greater gravitational force than the water and so sinks.
If the density of an object is more than the density of the liquid, then it sinks in the liquid. This is because the buoyant force acting on the object is less than the weight of the object. If the density of the object is less than or equal to the density of the liquid, then it floats on the surface of the liquid.
The Density Calculator uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). The calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume.
Density of Elements Chart
| Density | Name | # |
|---|
| 0.0899 g/L | Hydrogen | 1 |
| 0.1785 g/L | Helium | 2 |
| 0.9 g/L | Neon | 10 |
| 1.2506 g/L | Nitrogen | 7 |
If its density is less than water, it will float. For example, oak floats because its density is 0.7 g/cm³. If the density of an object is greater than water, it will sink.
Oil. Oil is more dense than alcohol, but less dense than water. The molecules that make up the oil are larger than those that that make up water, so they cannot pack as tightly together as the water molecules can. They take up more space per unit area and are less dense.
Answer: Compare the density of the object in question to the density of water. If its density is less than water, it will float. For example, oak floats because its density is 0.7 g/cm³. If the density of an object is greater than water, it will sink.
Things float when they are positively buoyant, or less dense than the fluid in which they are sitting. This does not mean that an object has to be lighter than the fluid, as in the case of a boat; objects just need to have a greater ratio of empty space to mass than the fluid.
Float or Sink? If an object has a density less than that of water, it will float. If an object has a density more than that of water, it will sink.
The Density Calculator uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). The calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume.
Ice is less dense than water
This is due to ice's density being less than liquid water's density. Upon freezing, the density of ice decreases by about 9 percent. Most of an iceberg exists below the water surface.Weight is a measure of how much gravity pulls on a mass or object. On the moon, there is less gravity pulling on objects, so they weigh less. Remember, even if you weigh less because of a change in gravity's force on your body, your body's mass is still the same.
2) Divide density of object by the density of the liquid and express as a % to get % submerged. For floating in water of density 1.0 gm/cm^3, dividing yields 0.8 or 80% of the object is submerged.
Density is a derived unit from two other units: mass and volume. Density is by definition, the amount of mass per unit volume. If a substance has a higher density, it is heavier. Likewise a lighter density means it is much lighter.
The positioning of molecules affects the density of an object. Objects with tightly packed molecules are more dense than those where the molecules are spread out. Objects that are more dense than water sink and those less dense float. Hollow things often float too as air is less dense than water.
In the case of water, an object with a density less than 1 g/cm3 will float. The closer its density is to 1 g/cm3, the more of it will sit below the water level. An object with a density of 0.5 g/cm3will sit half in and half out of the water. Three-quarters of an object with a density of 0.75 g/cm3will be submerged.
Use the object's mass and volume to find density. Density equals mass divided by volume. Simply make this calculation, and you have found the object's density. Make sure to label your final calculation with the proper units: g/cm^3.
Objects like apples, wood, and sponges are less dense than water. They will float. Many hollow things like empty bottles, balls, and balloons will also float. When more of the surface is touching the water, the object is more buoyant (BOY-ant), which means it floats better.
Ice floats because it is less dense than the water. Something denser than water, like a rock, will sink to the bottom. As water cools and freezes, it becomes less dense due to the unique nature of hydrogen bonds.
The density of a liquid determines whether it will float on or sink in another liquid. A liquid will float if it is less dense than the liquid it is placed in. A liquid will sink if it is more dense than the liquid it is placed in.
As it cools further and freezes into ice, it actually becomes less dense. Ice floats because it is about 9% less dense than liquid water. In other words, ice takes up about 9% more space than water, so a liter of ice weighs less than liter water. The heavier water displaces the lighter ice, so ice floats to the top.
19.32 grams per cubic centimeter
I used the formula volume = (4/3) · π · r3. I found the volume of the ball to be 5575.279763cm3. Then I found the mass of a football approximately 420g, after I used the formula density=mass/volume, 420÷5575.279763= 0.08kg/m3 rounding up.
Divide the object's weight by the acceleration of gravity to find the mass. You'll need to convert the weight units to Newtons. For example, 1 kg = 9.807 N. If you're measuring the mass of an object on Earth, divide the weight in Newtons by the acceleration of gravity on Earth (9.8 meters/second2) to get mass.
The density of water is 1 g/cm3. If the density of an object is greater than the density of water, the object will sink. If the density of an object is less than the density of water, the object will float.
