3. Compute the probable density of a fluid inside a floating spherical balloon having a 2m diameter f the tension in the balloon's tie rope is observed to be 2kgf. Assume that the density of air is 1.18kg/m³. a 0 7225kg/m3 b 0 6225kg/m3 C 0 7025kơ/m3 d 0 5848kg/m3
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- 1. A building is 512 m high. What must be the minimum water pressure (psi) in a pipe at ground level to get water up to a restaurant on the top floor. Neglect friction loss in pipe. 2. The pressure of a gas supports 2.75 ft of Mercury. Calculate the height of water column (in meters) which the gas pressure will support. 3.A water tank of cross-sectional area 2.5 m2 and height 120 in contains 1500 (US) gallons of water. If the density of water is 1000 kg/m3, calculate the force on the base of the tank.5. A tank contains two substance oil (A) and water (B) subject to variable air pressure; the dimension is shown below and corresponds to 1atm. If air is slowly added from a pump to bring pressure p up to 1MPA gage, what will be the total downward movement of the free surface of oil and air? Take average values of bulk moduli of elasticity of the liquids as 2050MPA for oil and 2075MPA for water. Assume the container does not change volume. Neglect hydrostatic pressures. Air 200 mm 600mm Oil- Water 700 mm 300 mm9. Compute the probable density of a fluid inside a floating spherical balloon having a 2m diameter if the tension in the balloon's tie rope is observed to be 2kgf. Assume that the density of air is 1.20kg/m³. a. 0.7225kg/m³ b. 0.6225kg/m³ c. 0.7025kg/m³ d. 0.5848kg/m³
- 3. What is the volume change in cm of a hydraulic oil when subjected to a pressure of magnitude 6 MPa? The original volume of the oil is 1500 cm3 and its bulk modulus of elasticity is 2.1x10 PA. Select one: a. DVol=-7.14 cm3. b. DVol=-8.57 cm3. c. DVol=-4.29 cm3. O d. DVol=-2.49 cm3. e. DVol=-5.71 cm3.7. One (1) statute mile is equivalent to: a. 73,360in. b. 1962yards c. 1609.7561m d. 5580ft 8. Convert one (1) US gallon in ft. c. 3782.4936 a. 230.8219 b. 0.0038 d. 0.1336 9. Compute the probable density of a fluid inside a floating spherical balloon having a 2m diameter if the tension in the balloon's tie rope is observed to be 2kgf. Assume that the density of air is 1.20kg/m?. a. 0.7225kg/m 10. A piece of unknown material has an intricate shape and weighs 126g in free air and 83g when submerged into water. What is the relative density of the piece? a. 3.3243 b. 0.6225kg/m? c. 0.7025kg/m³ d. 0.5848kg/m³ b. 2.9302 c. 3.5143 d. 3.3158 11. Is a working substance whose chemical composition remains but 'assumed' that there is no change of phase all throughout the working process of such substance. a. Surroundings b. Working Substance c. Ideal gas d. Pure Substance3. A piece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? Would the piece of wood float in water? 4. A reservoir of glycerin has a mass of 1200 kg and a volume of 0.952 m³. Find the glycerin's weight (W), mass density (O), specific weight (8),and specific gravity (s.g.)
- 4. If the modulus of elasticity (E) for water is given to be 2.2GPa, what pressure is required to reduce the volume by 0.6%? 5. A tank contains two substance oil (A) and water (B) subject to variable air pressure: the dimension is shown below and corresponds to 1atm If air isCalculate the pressure at depth 2 m using P = ρgh. p= (pressure) 19.855 kPa p= (density of the liquid) 1000 kg/m3 g= (gravity) 9.8 m/s2 h (height below the free surface of the liquid) 2m1.1 Find the rate at which water will flow in each pipe, ignoring the shock losses at P and entry to pipelines A and B. 1.2 Find the pressure at P. QUESTION 2 The diameter of an open-topped tank 1.5 m high increases uniformly from 4.2 m at the [2 base to 6 m at the top. Discharge from the base of the tank takes place through a 75mm diameter pipe which is 3 m in length. The pipe discharges the water to the atmosphere 1.5 m below the base of the tank. Initially, the tank is fully filled with water. Take f = 0.01. Find the time to empty the tank. QUESTION 3 Water must flow over a distance of 2 800 m from a large catchment dam to a turbine. [10 The water level in the catchment dam is 1 620 m above sea level and the turbine is situated 1 275 m above sea level. The efficiency of transmission is 65% and 300 kW must be transmitted from the pipeline to the turbine. Iff = 0.007, determine the number of 200 mm diameter pipelines, which must be laid in parallel, needed to transmit the required…
- If A reservoir of oil has a mass of 860 kg and volume of 330 L. then the: Specific weight of oil is kN/m^3Z= 25. Shown in fig. below, fluid A is oil (S.G. 0.82) and fluid B is salt solution (S.G. 1.10), = 21.5 in, y = 7.0 in. The local acceleration of gravity and barometric pressure and both standard. Compute the pressure at point x if the specific gravities are relative to 62.4 lbm/ft³ water. 10 Fluid A open Fluid BAn oil drum of 500 mm diameter and 1.5 long is to be rolled across a footstep of 100 mm high. Find the minimum push required at the top of the drum. Take density of the oil as 1 kg/litre. Neglect weight of the drum. [Ans. 1444.5 N]