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The wing of a sail plane is mostly laminar and its wingspan is 8 m. If the average chord is 0.4 m, then calculate the laminar, skin-friction drag force on the wing at a speed of 60 km/h (use air properties from Table 1.1). Do you think the actual drag of the wing is higher?
What idealizations are necessary to utilize the one-dimensional flow model? Explain the differences between mass and volumetric flow.
The cord is attached to the pin at C and passes over the two pulleys at A and D. The pulley at A is attached to the smooth collar that travels along the vertical rod. Determine the velocity and acceleration of the end of the cord at B if at the ins..
a steel cylinder initially contains nitrogen gas at 200kpa and 25 c. the cylinder is connected to a suply line
the slider-crank mechanism shown is an idealization of an automobile crank shaft connecting rod and piston. the length
the ball at a is kicked such that thetaa 30 degrees. if it strikes the ground at b having coordinates x 15ft y -9ft
a cylindrical duct supplies 1.20 kgs of combustion air at 150 c and 95.0 kpa to a furnace. if the velocity of the air
The mass is struck by a sudden sharp blow, giving it instantaneous velocity of 1 m/s radially outward. Show the state of the system before and after the blow on a sketch of the energy diagram.
steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.901 and exits as a saturated liquid. the steam is
consider a counter-flow heat exchanger in a refrigeration system. saturated liquid-vapor mixture of r-22 enters the
A rigid tank contains 8 kg of saturated vapor steam at 115 degrees c. The steam is cooled to the ambient temperature of 20 degrees c. (a) Sketch the process with respect to the saturation lines on a T-v diagram. (b) Determine the entropy change of th..
imagine that you work for an optical company and must measure and then report on the values of magnification produced
some unknown volume of oil sg 0.918 has been dumped into a vat of sea water sg 1.028 forming a stratified layered
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