Newtons from Bouyancy underwater comparing helium, oxygen, and hydrogen

In summary, the person is looking for information on the amount of buoyancy provided by different gases (helium and hydrogen) compared to oxygen underwater. They are also curious about the percentage increase in buoyancy. They are advised to consider the densities of the gases and water in their calculations.
  • #1
blueshifter
2
0
I have an under water application where I need the maximum amount
of buoyancy with a limit to the volume i can use for a lifting device.
My question is how much more Newtons would be exerted for helium instead of oxygen, or hydrogen instead of oxygen underwater?
What is the percentage increase ?

Thanks in advance
 
Physics news on Phys.org
  • #2
Welcome to PF. On this site, we try to help people learn to learn, rather than just spoon feeding answers. What have you tried so far in figuring this out? Hint: what are the densities of those gases (relative and under pressure)? What is the density of water?
 

Related to Newtons from Bouyancy underwater comparing helium, oxygen, and hydrogen

1. How does the buoyancy of an object change when submerged in different gases like helium, oxygen, and hydrogen?

The buoyancy of an object is determined by the density of the fluid it is submerged in. Helium has the lowest density, followed by hydrogen, and then oxygen. Therefore, an object submerged in helium will experience the highest buoyant force, while an object submerged in oxygen will experience the lowest buoyant force.

2. Does the size or shape of an object affect its buoyancy underwater?

Yes, the size and shape of an object do affect its buoyancy underwater. The larger the volume of an object, the more water it will displace, resulting in a greater buoyant force. Similarly, objects with irregular shapes may experience uneven buoyant forces, making it more difficult to control their movement underwater.

3. Can an object be neutrally buoyant in all three gases - helium, oxygen, and hydrogen?

Yes, an object can be neutrally buoyant in all three gases. This means that the object's weight is equal to the buoyant force acting on it, resulting in a net force of zero and allowing it to float at a constant depth. This can be achieved by adjusting the object's density to match that of the surrounding gas.

4. How do the different gases affect the speed at which an object rises or sinks in water?

The speed at which an object rises or sinks in water is determined by its buoyancy and the density of the surrounding gas. As mentioned earlier, helium has the lowest density and will provide the greatest buoyant force, causing an object to rise faster. On the other hand, oxygen has a higher density and will provide a lower buoyant force, causing an object to sink faster.

5. Are there any safety concerns when working with different gases underwater?

Yes, there are safety concerns when working with different gases underwater. Helium, for example, is an asphyxiant and can displace oxygen, leading to suffocation if proper precautions are not taken. Hydrogen is highly flammable and can also cause asphyxiation. It is important to follow safety protocols and have proper training when working with these gases underwater.

Similar threads

I Buoyancy of Helium and Hydrogen Balloons: Calculations and STP Considerations
    • Classical Physics
Replies
15
Views
2K
ECMO for Deep Sea Scuba diving?
    • Biology and Medical
Replies
16
Views
2K
Calculating Power From Hydrogen/Oxygen Flow in Water Turbine
    • Mechanics
Replies
10
Views
3K
How to work out Joules needed to perform work
    • Mechanics
Replies
16
Views
5K
Volume of Oxygen Liberated from Hydrogen Peroxide
    • Biology and Chemistry Homework Help
Replies
2
Views
8K
I Composition of Jupiter: Ices, Cores & Outer Gas Layers
    • Astronomy and Astrophysics
Replies
24
Views
3K
Is the world really better off without hydrogen airships?
    • General Engineering
2
Replies
47
Views
9K
Automotive Ozone Enhanced Combustion of Water/Diesel Emulsion in CI Engines
    • Mechanical Engineering
Replies
6
Views
1K
Water molecules effect on Hydrogen bonds in precipitation
    • Chemistry
Replies
2
Views
2K
Can Helium Be Converted into Hydrogen?
    • Biology and Chemistry Homework Help
Replies
6
Views
1K

Hot Threads

Recent Insights

Back
Top