Extracted text: For the manometer shown: . A. Determine the pressure difference between m and n B. Develop the pressure equation for the difference in pressure between Pm and Pn. Take the unit weight to be constant in this part of the problem For part A, use the following: SWATER 1.0 and SHG= 13.6 water 90 cm 105 cm 45 cm 52 cm 65 cm mercury