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Steam enters a converging-diverging nozzle operating at steady state with P1 = 40 bar, T1 = 400oC, and a velocity of 10 m/s. The steam flows through the nozzle with negligible heat transfer and no significant change in potential energy. At the exit, P2 = 15 bar, and the velocity is 665 m/s. The mass flow rate is 2 kg/s. Determine the exit area of the nozzle, in m2.
a 4 ft concrete post is reinforced with four steel bars each with a 34 diameter. knowing that es 29 x 106 psi and ec
carousle conveyors are used for storage and order picking for small parts.the conveyors rotate clockwise or counter
consider the power system as designed below. the duty fluid is water and has a mass flow 0.75 kg s and all piping
a dynamics student is called on to investigate a two-car collision. its known that car a struck car b. mass of car a is
a mixing chamber operated at 300 kpa pressure and is designed to mix a stream of steam with a stream of water. steam at
the free convection heat transfer coefficient on a thin hot vertical plate suspended in still air can be determined
Calculate the number of vacancies per cubic meter in gold at 900°C. The energy for vacancy formation is 0.98 eV/atom. Furthermore, the density and atomic weight for Au are 18.63 g/cm3 (at 900°C) and 196.9 g/mol, respectively.
a refrigerator in a laboratory uses r-22 as the working substance. the high pressure is 1200 kpa the low pressure is
1.based on the hume-rothery rules speculate on the possible driving forces behind the tendency for ordering in this
for an undamped sdof spring mass system m5kg and k2000 nm. plot the displacement and acceleration of the system using
helium has the lowest normal boiling point of any of the elements at 4.2 k. at this temperature the enthalpy of
for a brass alloy the stress at which plastic deformation begins is 345 mpa 50000 psi and the modulus of elasticity is
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