Q. A grating with 504 lines/mm is illuminated with light of wavelength 305 nm. What is the angular separation between the two lines formed in order m = 2?
Q. A 4.5 syringe has an inner diameter of 4.5 , a needle inner diameter of 0.22 , and a plunger pad diameter (where you place your finger) of 1.2 . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Assume the liquid is an ideal fluid.
What is the minimum force the nurse needs to apply to the syringe?
The nurse empties the syringe in 4.1 . What is the flow speed of the medicine through the needle?