1.37 What is the specific weight of air at 70 psia and 70 °F?
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- The damping ratio of the system response shown in BLUE is 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 20 30 40 00.5 01.2 10A 40 foot high window wall is on the exterior of a concrete building inChicago. What is an appropriate extreme temperature range?A jet of water issuing from a nozzle at 80 kph. Neglecting air resistance, how high could the jet of water rise?
- a jet of watee issuing from a nozzle at 80kph. Neglecting air resistance, how high could the jet of water rise?The air in an automobile tire with a volume of 2.60 ft³ is at 90°F and 20 psig. Determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. Assume the atmospheric pressure to be 14.6 psia and the tem- perature and the volume to remain constant.What do you mean by standard air?
- A gas under pressure of 12.868 bar abs at 40°C. a. compute the pressure in kpa b. compute the gage pressure c. compute the gas R if it has a unit weight of 362n/m³ (OUR SUBJECT IS FLUID MECHANIC)3. 6.0" wide wooden fence posts are embedded in a concrete driveway a distance 12.125" apart. There is a 1/16" gap between the post and the concrete (see diagram). The posts are installed when the temperature is 12°C. Determine if the gap will close when the temperature increases to 32°C and if not how big the gap will be at that temperature. The thermal expansion coefficients of wood and concrete are awood =32 x 105 °C and aconcrete =13 x 106 °C. 1 inch3D2.54 cm. 6.0" 12.0" 0.0625"What is the amount of entrapped air (percent)? Use two decimal places
- While the pressure remains constant at 85 psig, the volume of air changes from 20 ft3 to 12 ft3. Find the amount of work done on or by the closed system?Problems: a. At 1:00 P.M., a thermometer reading 70°F is taken outside where the air temperature is - 10°F (ten below zero). At 1:02 P.M., the reading is 26°F. At 1:05 P.M., the thermometer is taken back indoors, where the air is at 70°F. What is the temperature reading at 1:09 P.M.? b. For a substance D, the time rate of conversion is proportional to the square root of the amount x of unconverted substance. Let k be the numerical value of the constant of proportionality. Show that the substance will disappear in finite time and determine the time.2.62 Water is at 20°C, and the pressure is lowered until bubbles are noticed to be forming. What must the magnitude of the pres- sure be?