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The tie rod AB and a pipe strut AC are used to support a 100-kN load as shown in the figure. Both members are made of structural steel (E = 200GPa). The cross-sectional areas are 620 mm2 for AB and
The picture below shows a system where superheated vapor enters a container at a flow rate of 90 kg/s at 250C. The vapor is mixed with water (liquid phase) that enters at 20C.
When the heat transfer of 200 kW occurs from the turbine to the surroundings, determine the mass flow rate of steam in order to generate the same power from the turbine.
Determine the critical load on an air cylinder rod if the rod has a maximum extension of 0.5 m. The 25-mm-dia rod is solid steel with a yield strength of 400 MPa.
A frictionless piston-cylinder device contains 16 lbm of superheated water vapor at 40psia and 600 Degrees Fahrenheit. Steam is now cooled at constant pressure until 70% of it is, by mass, condenses
In an effort to reduce the mass of an aluminum bulkhead for a spacecraft, a machinist drills an array of holes in the bulkhead. The bulkhead is a triangular-shaped plate with a base and height of 2.
The air is first expanded isothermically to 500kPa, then compressed polytropically with a polytropic exponent of 1.2 to the initial pressure and finally compressed at the constant pressure to the in
The retracting load on a 2 in diameter hydraulic cylinder increases from 10000 lbto 15000 lb. du to the compressibility of the oil, the piston retracts 0.01in.
What is the percent error in specific volume if the ideal gas model is used to represent the behavior of superheated amonia at 100 F, 80 lbft/in^2? What is the generalized compressibility chart D.1
Determine 1) the energy flow rate of the oil at the inlet; 2) the difference of energy flow rate between the outlet and inlet; 3) the overall efficiency of the motor-pump system?
A piston-cylinder device initially contains 0.07m^3 of nitrogen gas at 130kPa and 120 Degrees Celsius. The nitrogen is now expanded polytropically to a state of 100kPa and 100 degrees Celsius. Deter
Determine: (a) the total specific mechanical energy of the river water; (b) the maximum power it can generate of the river at that location.
The volume of 1 kg of helium in a piston-cylinder device is initially 5m^3. Now the helium is compressed to 3m^3 while its pressure remains constant at 200kPa. Determine the initial and final temper
A Lear jet flying at 150 KCAS (assume no errors due to compressibility so let's assume 150 KEAS) at sea level on a standard day preparing to land and flying in a no flaps configuration. Weight is 12
You decide to do a demonstration on a rooftop that requires water. There isn't a handy faucet, so you put a barrel of water down in the plaza. The top of the barrel is open to the atmosphere.
If the turbine in part a is adiabatic but only 80% efficient, what would be the exit temperature of the steam? At what rate would entropy be generated within the turbine?
A double-acting duplex pump with 6.5 in liners, 2.5 in rods, and 18 in stokes was operated at 2000 psig and 20 cycles/min for 10 minutes with suction pit isolated from return and mud flow.
What is the work required (kJ/kg) in the first compressor of methane? What is the temperature at the exit of the first compressor (°C)?
The treadmill display shows he has burned 620 kcal. For Jack to break even calorie-wise, how much vanilla ice cream, in cups, me he have after his workout?
A plane wall 15 cm thick has a thermal conductivity given by the relation k = 2.0 + 0.0005*T W/mK. where T is in Kelvin. If one surface of this wall is maintained at 150 C and the other at 50 C, de
A particular system obeys the relation u=A*(u^-2)*exp(s/R) N moles of this substance, initially at temperature To and pressure Po, are expanded isentropically (s = constant) until the pressure is ha
Assume the density of this metal at the given temperature is 5.84 g/cm3 and the atomic mass is 69.72g/mol. What is the required energy of vacancy of this metal?
For a Newtonian fluid or a power law fluid flowing through a cylindrical tube of radius R, calculate the constant k in the relation gamma = kU between shear rate and reduced velocity at r = R.
Two blocks A and B are connected by a cord passing over two pulleys C and D and E and F. At t = 0 block A starts moving downward from the position with a constant acceleration of 0.4 m/s2 and no ini
A working fluid at 500kPa, 400C (673.15K) is in a piston-cylinder equipment with an initial volume of 0.9 m^3. The fluid undergoes an expansion process which may be described as PV=constant. The fi