A hypodermic syringe has a plunger of area 2 5 cm2
A hypodermic syringe has a plunger of area 2.5 cm2 and a 5.0 x 10-3 cm2 needle.
(a) If a 1.0-N force is applied to the plunger, what is the gauge pressure in the syringe’s chamber?
(b) If a small obstruction is present at the end of the needle, what force does the fluid exert on it?
(c) If the blood pressure in a vein is 50 mm Hg, what force must be applied on the plunger so that fluid can be injected into the vein?
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