Convert 25 N/cm² pressure in equivalent column of mercury and water.

1. A 4m x 4m x 3m contains air at 27°C. If the pressure of dry air is 95 kPa, calculate the mass of air if the air fills completely the room.

A hydraulic cylinder has a 275 mm diameter. How much oil pressure P (kPa) is required to produce 12500 N force at its piston?

A gas is contained in a vertical cylinder fitted with a piston as shown in Fig(1). atmospheric pressure is lbar, and the piston area is 400mm?. what is the mass of piston, if the gas pressure inside is 120kPa? Assume standard gravitational acceleration. 1.2 Fig.1 Sketch for Problem 1.2 PISTON Gas

Problem 1: Manometry application Consider the complex manometer of the figure below composed of five different fluids: Benzene, Mercury, Kerosene, Water and air. a) Determine the pressure difference, in Pa, between A and B; b) If the pressure at point C is 2400 Pa, calculate the pressure at A and B: c) Calculate the pressure at points C and D if the pressure at A is twice the pressure at B. Point C Kerosine Air Benzene 40 cm 9 cm 20 cm 14 cm cm Point D Mercury Water Notes: the specific weights of the manometer different fluids are: Benzene: 8640 N/m: Kerosene: 7885 N/m': Mercury 133 100 N/m: Water: 9790 N/m: Air: 12 N/m?.

3.9 A Bourdon gauge reads vacuum pressure of 32.45 cm-mercury whilst the barometer reads 99.947 kPa. Calculate the absolute pressure registered by the Bourdon gauge.

If the absolute temperature is 300k, what is the equivalent in oR?

3. The specific gravity of a certain alcohol is 0.8. Calculate its specific weight and mass density (in both English and SI units)  (3 DECIMAL IN FINAL ANSWER PLS!!)

6. A vertical cylinder is poured with four immiscible liquids as shown in the figure below. The liquids and their corresponding specific gravities are listed. If the container is open to the atmosphere, what is the a. gauge pressure in mm-Hg at the liquid interface B? b. absolute pressure at the bottom in Pa? in psi? and in torr? LIQUIDS SG 70 cm C Heptyl ether 0.810 25 cm B Seawater 1.025 50 cm Glycerine 1.260 Sesame oil 0.785 92 cm

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