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The pilot of an airplane reads the altitude 3000 m and the absolute pressure 58 kPa when flying over a city. Calculate the local atmospheric pressure in that city in kPa and in mm Hg. Take the densities of air and mercury to be 1.15 kg/m3 and 13,600 kg/m3, respectively.
Propane at 8 bars and 80oC is contained in a closed, rigid vessel with a volume of 10 m3. Its temperature drops due to heat transfer to the surroundings. Determine (a) the temperature at which condensation first occurs and (b) the fraction of the tot..
An alternating copolymer is known to have a number-average molecular weight of 100000 g/mol and a degree of polymerization of 2210. If one of the repeat units is ethylene, which of styrene, propylene, tetrafluoroethylene, and vinyl chloride is the ot..
Consider a saturated clay layer of 4 m thickness on top of a deep layer of stiff sand. The clay has an initial porosity n=40%. Following a lowering of the water level in the clay, the clay porosity is reduced to 30%. What is the change of thickness S..
in an ideal rankine cycle feedwater with an enthalpy of 74 btulbm enters a boiler at a temperature of 106degf and at a
a composite rod consists of two different materials a and b each of length 0.5 l. the thermal conductivity of material
The main elevator A of the CN Tower in Toronto rises about 349 m and for most of its run has a constant speed of 22 km/h. Assume that both the acceleration and deceleration have a constant magnitude of g/3 and determine the time duration t of the ..
why is it easier to exhale than to inhale in order to blow out a candle? how is it related to laminar flow or steady
How fast does water flow from a hole at the bottom of a very wide, 4.6-m-deep storage tank filled with water? Ignore viscosity.
a 40kn axial load is applied to a short wooden post that is supported by a concrete footing resting on undisturbed
A car is driven along a straight track with position given by s(t) = 150t – 300 ft (t in seconds). Find v(t) and a(t). Use calculus to find the displacement and total distance traveled over the interval [1, 4].
A piston cylinder device contains 2 m^3 of saturated water vapor at 31.202 kPa pressure. Determine the temperature and the mass of the vapor inside the cylinder.
a 2 phase liquid-vapor mixture of 2 kg of water is contained in a rigid insulated tank initially with a pressure of 1
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