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Mercury is often used in barometers. This is because tje vapor pressure of mercury is low enough to be ignored, and because it is so dense (specific gravity= 13.6) the tube can be shortened considerably. With the atmospheric pressure of 99.9 kN/m^2 at 30 degrees Celsius. Determine the column height in meters (and feet) if mercury is used. Please try to explain your responses so I can understand
In a refrigerator 1 kW is removed from the -10 degree C cold space and 1.3 kW is moved into the 30 degree C warm space. Find the exergy fluxes including direction associated with the two heat transfers.
Gravitational forces pull the two stars together. What is the speed of each star at the moment of impact?
water flows through a pipe at an average temperature of t70degc. the inner and outer radii of the pipenbspare r16cm and
An Industrial water shutoff valve is designed to operate with 40lbs of force and will encounter 150lbs of resistance force applied to a 2in diameter axle. What is the required actual mechanical advantage of the system?
Calculate the heat transfer per kilogram of air between sections (1) and (2), and the stagnation pressure at section (2).
Energy in the home, personal energy use and home energy efficiency. Efficient use of ‘waste' heat and renewable heat sources.
a rigid tank with a volume of 25 m3 contain 15 kg of saturated liquid-vapor mixture of water at 75 ordm c. now the
two machines are used for filling glass bottles with a soft-drink beverage. the filling process have known standard
a particle at rest is located at point 325 with units of ft. it is subjected to an acceleration in units of fts2 of a
a stone is thrown vertically upward from a point on a bridge located 40 m above the water. knowing that it strikes the
the water in a large lake is to be used to generate electricity by the installation of a hydraulic turbine-generator at
water at 200 kpa and 10 degree celcius enters a mixing chamber at a rate of 150 kgmin where it is mixed steadily with
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