1. The problem statement, all variables and given/known data A 1.63 mL syringe has an inner diameter of 5.04 mm, a needle inner diameter 0.21 mm, and a plunger pad diameter (where you place your finger) of 1.06 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. What is the minimum force the nurse needs to apply to the syringe? 2. Relevant equations F1/A1=F2/A2 3. The attempt at a solution I understand that the pressure is constant through out the syringe, but what I don't know how the blood pressure is used. I see that i can use blood pressure=force/(area of needle inner diameter) solve for force. then use the relationship F/A to solve for the tap. So long story short......does it matter what the blood pressure number is or do i have to change it to Pa/atm some how?