What would be the right hypothesis for the title:
Effect of the size of the hole on the distance the water will squirt.
Answers
Answer:
The type of material you are talking about would be a molecular sieve. Water is one of the smallest molecules there is, being less than 3 angstroms across.
Explanation:
The principles here are fairly straight forward.
forward.Viscosity and surface tension have fundamentally different type of barriers. viscosity will never completely stop a flow. So if a viscous liquid encounters force to go through a hole, no matter how small the hole and no matter how viscous the fluid there will always be some non-zero flow (so long as we are within the applicable limits of the model. So, I suppose if the hole is comparable in size to the molecules that comprise the fluid, then there could be a breakdown of this “rule”. Also note that for viscosity, the “size” of the hole must also include the length of the channel (the thickness of the membrane).
forward.Viscosity and surface tension have fundamentally different type of barriers. viscosity will never completely stop a flow. So if a viscous liquid encounters force to go through a hole, no matter how small the hole and no matter how viscous the fluid there will always be some non-zero flow (so long as we are within the applicable limits of the model. So, I suppose if the hole is comparable in size to the molecules that comprise the fluid, then there could be a breakdown of this “rule”. Also note that for viscosity, the “size” of the hole must also include the length of the channel (the thickness of the membrane).For surface tension there can be a threshold. However, this can only be true if the liquid does not want to wet the surface of the material that makes up the barrier though which the hole is present. If the surface is wettable (meaning a contact angle which is less than 90 degrees, then surface tension will provide no barrier to passage of a meniscus.
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