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A weather balloon carries a mercury barometer in order to determine altitude as a function of flight time. At a particular moment, the barometer gives a reading of 476 mm. How high (in meters) is the balloon above standard sea level? (Assume mercury has a density of 13,600 kgm3, and approximate that dry air at any elevation has a constant density of 0.9 kgm3.)
the tank has a 180mm diameter and 12 mm wall thickness. knowing that the tank contains compressed air under a pressure of 8 Mpa, determine the magnitude t of applied torque for which the maximum normal stress in tank is 75 Mpa.
a large food processing plant requires 2 lbsec of saturated steam or slightly superheated steam at 80 psi which is
hydrogen h2 at 77 c 4bar enters an insulated chamber at steady state where it mixes with nitrogen n2 entering as a
a 2.5 m tall steel cylinder has a cross sectional area of 1.5 m2 . at the bottom with a height of 0.5 m is liquid water
saturated water vapor at 300 degrees f enters a compressor operating at steady state with a mass flow rate of 5 lbs and
one kmol of ideal gas cp30 jmolk is contained in a piston cylinder initially at 25c and 10bar. the mass of the piston
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air at 1.0 atmosphere pressure and 77 0c enters a 5.0 mm i.d. tube with a bulk average velocity of 2.5 ms. the velocity
a well-insulated rigid tank contains 5 kg of a saturated liquid-vapour mixture of water at
Air enters an adiabatic compressor at 0.1 kg/s, 100 kPa, 25 °C and exits at 700 kPa. (a) Draw a schematic of the system. Determine (b) the minimum power input (kW) and (c) the entropy generation rate (kW/K)
a pistoncylinder arrangement is filled with helium gas. the gas is compressed with a polytropic process with nk. the
if the effects of atmospheric resistance are accounted for a fallinf body has an acceleration defined by the equation
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