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Three kilograms of hydrogen contained in a nondeforming sealed vessel are cooled from 400 °C, 400 kPa(abs) until the hydrogen pressure is 100 kPa(abs). Calculate the change in internal energy, enthalpy, and entropy associated with this cooling process.
a cnc drill press is to perform a series of through-hole drilling operations on a 1.75 in thick aluminum plate. each
a satellite is in earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km. a. what
Consider a copper tube as a capped cylinder that cannot lengthen or shorten. If it were ?lled with water, what would be the circumferential strain in the wall when the water froze?
r-134a vapor enters an adiabatic turbine at 250 psia and 175 f. the temperature at the outlet is 20 f. determine the
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 tank whose volume is 0.01 m3 initially evacuated. a pinhole develops in the wall and the air from the surroundings at
water flows in a 3 in diameter steel pipe schedule 40 that is 100 ft long with 120 gpm. there are six 90ordm elbow
Sketch crystallographic planes with the following Miller-Brava is indices in a hexagonal unit cell: (a) 1(Bar)101 ; (b) 2(Bar)112 . Mark the origin and axes. Explain your answers.
In the branched pipe system shown in Fig. 12.8, 850 L/min of water at 10°C is flowing in a DN 100 Schedule 40 pipe at A. The flow splits into two DN 50 Schedule 40 pipes as shown and then rejoins at B.
A turbine is connected to an electric generator through gears, as shown in Fig. 5.59
Describe the properties of the Smith chart when used as admittance chart. In particular, discuss short and open circuit points, relation to the impedance chart, etc.
At a given instant of time, the temperature distribution within an infinite homogeneous body is given by the function
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