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Home > Courses > 1P22_Kaur
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A hypodermic syringe is filled with a solution whose viscosity is 1.5
x 10-3 Pa.s. As the drawing
shows, the plunger area of the syringe is 8.0x10-5 m2,
and the length of the needle is 0.025 m. The internal radius
of the needle is 4.0x10-4 m. The gauge pressure in a vein is 1900 Pa
(14 mm of mercury). What force must be applied to the plunger, so that
1.0x10-6 m3 of solution can be injected in 3.0 s?
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