The figure shows a syringe with a 4.0-cm-long needle, filled with water at 20. What is the gauge pressure of the water at the point P, where the needle meets the wider chamber of the syringe?
figure: http://session.masteringphysics.com/problemAsset/1014207/7/jfk.Figure.P13.38.jpg
I'm not sure what you mean by water at 20.
So I'll work the problem assuming atmospheric pressure at the needle. If this is not correct please re-post
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