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The rear vane installed on the racing car of Fig. 11.26 is at an angle of attack of 8° and has characteristics like those given in Fig. 11.23. Estimate the downward thrust (negative lift) and drag from the vane that is 1.5 m long and has a chord length of 250 mm. Assume the racing car travels at a speed of 270 km h on a track where normal atmospheric pressure and a temperature of 30°C prevail.
1. an employee at general electric must order bottles of compressed methane to run her gas oven test facility. the
a circular bar of radius r 1 cm is placed horizontally between two vertical supports that are separated by distance l
a solid cylinder of radius r and mass m is initally at rest on the bed of a truck. the distance from the center of the
At the proportional limit, a 1.5-in. gage length of a 0.375-in.-diameter alloy rod has elongated 0.0081 in. and the diameter has been reduced 0.00071 in. The total tension force on the rod was 5.62 kips.
water behind a dam enters an intake pipe at a pressure of 1.05 bar and velocity of 1 ms flow through a hydraulic
A rigid insulated container has two rooms separated by a membrane. Room A contains 1 kg air at 200oC and room B has 1.5 kg air at 20oC, both rooms at 100 kPa. Consider two different cases
0.75 kg of Refrigerant 134-a is compressed in a compressor from 160 kPa and -10°C to 1.2 Mpa and 50°C, steadily. Determine the change in flow exergy of the refrigerant during this process, if the environment is at 100 kPa and 25°C.
For these tests the viscosity of the water was 2.3x10-5 lbf s/ft2 and the water density was 1.94 slug/ft3. Estimate the drag on an 8-ft-diameter balloon moving in air at a velocity of 3 ft/s. Assume the air to have a viscosity of 3.7x10-7 lbf s/ft..
An engineer proposes to insert a solid rod of diameter Di into a circular tube of diameter Do to enhance heat transfer from the flowing fluid of temperature Tm to the outer tube wall of temperature Ts,o. Assuming laminar flow, calculate the ratio of..
the mean solar flux at the earths surface is 2.00 jcm-2min-1. in a nonfocusing solar collector the temperature can
Starting from the ideal gas law and the first law of thermodynamics derive the relationship between a) pressure temperature and, b) pressure and specific volume in isentropic compression show detail proof.
a the vacancy formation energy in a particular metal is 0.5 ev. calculate the concentration of vacancies at 400 oc b
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