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allochka39001 [22]
3 years ago
8

I need help on this question

Physics
2 answers:
Alisiya [41]3 years ago
6 0

Answer:

Explanation:

5

raketka [301]3 years ago
3 0

Answer:

there are 5 hydrogen atoms in that formula

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What is the gauge pressure of the water right at the point p, where the needle meets the wider chamber of the syringe? neglect t
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Missing details: figure of the problem is attached.

We can solve the exercise by using Poiseuille's law. It says that, for a fluid in laminar flow inside a closed pipe,

\Delta P =  \frac{8 \mu L Q}{\pi r^4}

where:

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r is the radius of the pipe.

We can apply this law to the needle, and then calculating the pressure difference between point P and the end of the needle. For our problem, we have:

\mu=0.001 Pa/s is the dynamic water viscosity at 20^{\circ}

L=4.0 cm=0.04 m

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\Delta P = 3200 Pa

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