All Questions
12
questions
2
votes
1
answer
57
views
Velocity Needed For Water To Overcome Adhesion Force To A Rounded Steel Inclined Plane
Context: I work at a fast food restaurant with a 3-module sink. The sides are slightly angled down to allow the water to trickle down into the compartments. I found that water clings to the side of ...
- 21
1
vote
1
answer
100
views
Gravity vs adhesion of a water droplet
How much volume can a water droplet that is attached to a vertical glass surface have before it begins to roll downwards?
- 195
2
votes
1
answer
59
views
Water traveling on a letter in a water feature
Difficult for me to ask as I'm not a physicist.
Assume you have a water feature in the form of a waterfall where the water runs down a wall. On this wall, there are letters attached by a raised ...
- 133
-1
votes
1
answer
31
views
What type of adhesion is at play when dust is collected by water
A washing tower that rains water down through a polluted gas will take up the particulates in the gas. They do this through adhesion, I'm pretty sure.
Now, there's apparently 5 types of adhesion:
...
- 365
6
votes
0
answers
849
views
When does water decrease or increase friction?
Water often acts as a lubricant e.g. a wet floor or road, but sometimes the reverse happens e.g. putting on wet clothes. I understand that surface tension is involved e.g. microscope slides sticking ...
- 1,879
0
votes
1
answer
382
views
Why is it easier to catch mosquitoes with your hand when your hand is wet?
Recently I've noticed that it's significantly easier for me to catch a mosquito with my hand if my hand is very wet (e.g. from having washed my hands and not yet dried them, or from being in the ...
- 101
1
vote
0
answers
524
views
Water movement in variable diameter bent capillary?
So, I recently learned that if a capillary tube is bent in an upside down U shape, the meniscus formed will be convex (towards the ground). Furthermore, the height (shown as h) traveled by the water ...
- 1,033
2
votes
1
answer
1k
views
Meniscus in U-shaped capillary?
What does the meniscus look like for a U-shaped capillary?
From similar questions, I learned that the total height (labeled as h) reached by the water in the un-bent capillary is less than the total ...
- 1,033
1
vote
1
answer
2k
views
Wet a paper to make it sticky
If I wet a piece of paper and put it down on another piece of paper it will stick (a little bit) to it. What are the forces involved here (surface tension maybe)? What would be the strength required ...
- 281
1
vote
0
answers
61
views
Capillary bridge force function given volume and distance
Given two surfaces and a fluidic glue with sufficient adhesion, what is the force provided by the capillary bridge provided the cohesive properties of the glue, volume, and distance between the ...
- 111
0
votes
1
answer
504
views
Paper Napkin Folded
Why folded napkins are better absorbing water than ordinary napkin. I think there must be related to cohesion of water element. Water are captivated between layers because they appeals each other or ...
- 163
10
votes
5
answers
6k
views
A cup of water in ZERO gravity
What will happen if I try to pour a cup of water in zero gravity, into another empty cup? Will the water come out of the cup? The adhesive force between the water molecules and the interior of the cup ...
- 359