Table of Contents
- 1 What if air is heavier than water?
- 2 Can compressed air be heavier than water?
- 3 Is water 800 times heavier than air?
- 4 How many times heavier is water than air?
- 5 Is water 1000 times denser than air?
- 6 How much faster is sound in water than air?
- 7 Why does wet air weigh less than dry air?
- 8 Why is the apparent weight of water less than the air?
- 9 Why does an object weigh less in a vacuum than air?
What if air is heavier than water?
If air was denser than water, air would displace the water. Air would fall to the lowest levels of the ocean and the water would rise to the top of the atmosphere. We would have no liquid water accessible to use, and so life would be less likely to form.
Can compressed air be heavier than water?
(a) Correct. Water is heavier than air because it is DENSER. Think of it this way: if you pump up the bottle to 140 pounds per square inch (PSI) of air pressure, then for every air molecule expelled out of the bottle, you could have expelled roughly 83 water molecules. That’s a lot more mass!
Is water 800 times heavier than air?
Water molecules consist of two atoms of hydrogen combined with one atom of oxygen (H2O). Water is 800 times denser than air. Salt water weighs 64 pounds per cubic foot. Fresh water weighs 62.4 pounds per cubic foot.
What is the reason the weight of the object less in water than in air?
This is due to what is known as buoyancy. Buoyancy is actually the upward force of a liquid acting on an object that is placed in it. This force, known as buoyant force has been shown to be equal to the weight of water the object displaces.
What would happen if air was more dense?
More dense, or “heavier” air will slow down objects moving through it more because the object has to, in effect, shove aside more or heavier molecules. Such air resistance is called “drag,” which increases with air density.
How many times heavier is water than air?
Water is 780 times heavier than air.
Is water 1000 times denser than air?
Water has a density of 1000 kg/m^3. 1000 kg/m^3 divided by 1.275 kg/m^3 yields 784. Therefore, at sea level, air is 784 times less dense than water. Expressed in another way, a volume of air at sea level has 0.1275\% of the density of the same volume of water.
How much faster is sound in water than air?
There are about 800 times more particles in a bottle of water than there are in the same bottle filled with air. Thus sound waves travel much faster in water than they do in air. In freshwater at room temperature, for example, sound travels about 4.3 times faster than it does in air at the same temperature.
What happens if an object is placed in water and its density is greater than water?
Key Concepts. Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float.
What happens if the buoyant force is less than the weight of an object in the liquid?
If the buoyant force is less than the object’s weight, the object will sink. If the buoyant force equals the object’s weight, the object will remain suspended at that depth. The buoyant force is always present in a fluid, whether an object floats, sinks or remains suspended.
Why does wet air weigh less than dry air?
Since 27.50 is less than 28.56, air with 10 percent water vapor in it (or, indeed, any amount) weighs less than dry air. For most people, this is counter intuitive. Perhaps that is because wet air is less refreshing.
Why is the apparent weight of water less than the air?
Since the density of water is greater than the density of air, the upward force is greater. And because of this, the apparent weight is less. Note, we don’t normally consider the variation of air pressure with height.
Why does an object weigh less in a vacuum than air?
If it weighs more, it sinks but still weighs less under water than in the air. The same principle applies to air, but air weighs much less, so there isn’t much difference between the weigh of an object in air and the weight of the same object in vacuum. But if it does weigh less than the displaced air, it
What happens to the weight of an object in water?
However, in both cases the weight (a force) is countered by an opposing force due to impulsion resulting from the weight of water (air) being displaced by the object´s volume (Archimedes´ principle). Because the water is so much heavier than air, it may appear to you that the object´s weight has decreased in water, when in fact it has not.