Required information A manometer is used to measure the air pressure in a tank. The fluid used has a specific gravity of 1.40, and the differential height between the two arms of the manometer is 18.6 in. The local atmospheric pressure is 12.7 psia. The specific gravity of the fluid is given to be 1.40. The density of water at 32°F is 62.4 Ibm/ft3. Determine the absolute pressure in the tank for the case of the manometer arm with the higher fluid level being attached to the tank. The absolute pressure in the tank is 13.96 psia.

Atmospheric pressure at this location is 102.0 kPa and fluid temperature is presently 30°C. Oil (sg = 0.90) C Water 125 mm 475 mm 250 JU mm 50 mm Mercury (sg = 13.54) Figure 1: Compound manometer (note: sg = specific gravity)

The Venturi meter shown in the sketch below, contracts the flow down to one quarter of its original area. Cold air at 0 deg C flows in the pipe through the Venturi meter. The velocity of the air upstream of the Venturi meter  is equal to 40 ft/s and the pressure at the same point is equal to 30 psia. What is the manometer reading if the fluid of the manometer is water with density 1000 kg/m3 .  Assume that the air behaves as an ideal gas with molecular weight equal to Mw=29 kg/kmol and constant density evaluated at upstream conditions. Use Bernoulli's equation for your calculations.  please respond asap!

Page 3 Ethyl alcohol flows in a pipe at 20°C. The pipe is not open to the atmosphere. The manometer fluid is mercury. Both manometers are open to the atmosphere. Elevations are given in cm. Find the pressure [Pa, gage] and velocity [m/s] at Point 1. 100 68 Assume steady, ideal flow. 58 50 39 Elev in cm NOT TO SCALE