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yang09
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Homework Statement
The hypodermic syringe contains a medicine with the same density of water. The barrel of the syringe has a cross-sectional area of 3.69595 × 10^−5 m^2(A1). The cross-sectional area of the needle is 1.14537 × 10^−8 m^2(A2). In the absence of a force on the plunger, the pressure everywhere is 1.0 atm. A force of magnitude 2.29077 N is exerted on the plunger, making medicine squirt from the needle. Find the medicine’s flow speed through the needle. Assume that the pressure in the needle remains at atmospheric pressure, that the syringe is horizontal, and that the speed of the emerging fluid is the same as the speed of the fluid in the needle.
Answer in units of m/s.
Homework Equations
Forcein/Areain = Forceout/Areaout
Mass Flow Rate = (ρ)(Area)(Velocity)
The Attempt at a Solution
I do not know where to start so any help at all is appreciated.