Question

The patient in the figure below is to receive an intravenous injection of medication. In order...

The patient in the figure below is to receive an intravenous injection of medication. In order to work properly, the pressure of fluid containing the medication must be 105 kPa at the injection point. (a) If the fluid has a density of 1001 kg/m3, find the height at which the bag of fluid must be suspended above the patient. Assume that the pressure inside the bag is one atmosphere. m (b) If a less dense fluid is used instead, must the height of suspension be increased or decreased? decreased increased Explain. This answer has not been graded yet.

Homework Answers

Answer #1

My approach. i had to assume that the pressure inside the bag being one atm meant that the pressure difference of the atmosphere and the liquid in the bag is 1 atm.

Next just us the equation

roe*g*?height = ?pressure

The ?pressure = 1atm - 106kPa . I had to look online for the conversion from atm to kPa to to this subtraction.
1atm = 101.375 kPa i think

now that you have ?pressure , roe and g ( which is 9.8) you can now divide your equation to get ?height

keep in mind that in order to divide you have to conver kPa to N/m^2
. I looked it up 1kPa = 1000N/m^2

Since i stayed in SI untis the answer will be in units of meter. hence .465 meters

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