- #1
seratia
- 38
- 4
Textbooks say it decreases flow. But, when I think about it...
If you blow through a small straw, you are blowing out less volume. But wouldn't the speed of flow be higher, therefore making up for the decrease in volume?
Like this:
Lower volume squeezed out faster = higher volume squeezed out slower?
After all, when you squeeze the open end of a hose, it's not like you deliver less water. You deliver less water but faster, and therefore the same amount of water.
Is my assumption flawed?
Maybe I am assuming constant pressure where I shouldn't? Maybe the hose is responding to the reduced diameter by increasing the pressure, thus overcoming the increase in resistance with increase in pressure?
If you blow through a small straw, you are blowing out less volume. But wouldn't the speed of flow be higher, therefore making up for the decrease in volume?
Like this:
Lower volume squeezed out faster = higher volume squeezed out slower?
After all, when you squeeze the open end of a hose, it's not like you deliver less water. You deliver less water but faster, and therefore the same amount of water.
Is my assumption flawed?
Maybe I am assuming constant pressure where I shouldn't? Maybe the hose is responding to the reduced diameter by increasing the pressure, thus overcoming the increase in resistance with increase in pressure?
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