Problem: What is the minimum force the nurse needs to apply to the syringe? Express your answer in newtons. A 5.0 ml. syringe has an inner diameter of 4.5 mm, a needle inner diameter of 0.27 mm, and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Assume the liquid is an ideal fluid. Need Assignment Help?