an inclined manometer is connected to a pitor tube to measure the velocity at the center of a circular duct. If the inclined manometer measured 2.3 inches of water and the minimum division on the manometer scale is 0.04 inches of water. What is the uncertainty of the velocty at the center of the pipe in m/s

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.