16 votes

How does pressure exist inside a drop of water?

The pressure outside a droplet arises from molecules bouncing against the droplet's surface, delivering an inward momentum "kick." Since the droplet doesn't shrink to nothing, there must be ...
Chemomechanics's user avatar
8 votes

How does pressure exist inside a drop of water?

The atmosphere and the surface tension forces both squeeze the water droplet which generates a pressure more than the atmospheric pressure inside the drop
Aarush Saharan's user avatar
8 votes

How does pressure exist inside a drop of water?

the reason is that the surface of the droplet acts as if it were a stretched rubber membrane which applies a squeezing force to the water inside. The stretched rubber effect is due to something called ...
niels nielsen's user avatar
3 votes
Accepted

How does a bubble pop?

According to your video, when the object first touches the bubble, it creates a hole on one side. However, the elasticity of the bubble's surface causes it to contract and partially seal around the ...
Testina's user avatar
  • 179
2 votes
Accepted

Confusion regarding a wooden block floating in water in a sealed container

When the air pressure increases, the water pressure must increase as well to remain in equilibrium. It has to, otherwise there would be a net downward force on the layer of water at the surface. So ...
Michael Seifert's user avatar
2 votes

Rotating fluid shape with its own gravity

It won't be a sphere, but instead an MacLaurin spheroid or more gerally a Jacobi ellipsoid
mike stone's user avatar
  • 52.5k
2 votes
Accepted

Why does taking average pressure and multiplying with area given total hydrostatic force

If you plot pressure vs depth, you get a straight line of positive slope. The average value is the area under that line divided by the x-length of the line. The area under any sloped line is the area ...
RC_23's user avatar
  • 8,880
2 votes

How does pressure exist inside a drop of water?

The pressure exists inside a drop of water due to the cohesive forces between water molecules. These forces cause the molecules to be attracted to each other, creating tension within the drop. This ...
Rajib's user avatar
  • 1
1 vote

What is the meaning of screened potential?

why do we need another potential besides the Coulomb one that includes the interaction between every particle in the system? The problem is that we can not solve the problem if we include all the ...
hft's user avatar
  • 18.9k
1 vote

Using Bernoullie theorem to find efflux velocity

The picture is oversimplified. In fact, pressure decreases with distance along the flow as long as the flow velocity changes with that distance. This is happening outside the pipe, where the liquid ...
Ján Lalinský's user avatar
1 vote
Accepted

How can Ventury tube measure velocity in a pipe when it is is zero at the wall?

Short answer. Because pressure is approximately constant across a thin boundary layer. Some details. You can connect velocity and pressure in different points of a fluid belonging to the same ...
basics's user avatar
  • 8,176
1 vote

Confusion regarding a wooden block floating in water in a sealed container

I believe the degree to which the block floats above the water depends only on the density of the block relative to the density of the water. Increasing the air pressure above the water has little ...
Bob D's user avatar
  • 70.4k

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