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A 4-m-wide road sign oscillates heavily in a 15-km/h crosswind. To study the problem a 1/20-scale model was placed in the water-tunnel. Estimate the watertunnel speed if both the Reynolds number and the Strouhal number must be kept the same (at 0.2) as in full scale, as well as the oscillation frequency. (Use fluid properties from Table 1.1.)
suppose a pair of rolling element bearings is being considered as the support for the front wheel of a bicycle. the
what is the gauge pressure of the gas in this mercury manometer if h 81 mm and the atmospheric pressure is 773 mmhg?
Design a heat sink that will dissipate as much heat as possible - if it is assumed that the base plate is kept at a constant temperature of 380K - Advantages and disadvantages of using CFD as opposed to other methods for this project.
State any assumptions or approximations you make, and find the ratio = convective heat loss / radiation loss?
the state liquid water is changed from 50 pisa and 50 f to 200 pisa and 100 f. determine the change in the internal
in an air-water vapor mixture at 30degc the partial pressure of the water vapor is 1.5kpa and the partial pressure of
1) An electron is shot through a magnetic field (see above) with an initial velocity of 100 ft/sec. The magnetic fieldaccelerates it in the perpendicular (normal) direction with a constant acceleration of 1000 ft/sec2. If the magnetic field has a d..
a 32 lb weight is attached to the end of a spring with spring constant k 24 lbf. if the resistive force is 10 dxdt
the water in a 25 m deep reservoir is kept inside by a 150 m wide wall whose cross section is an equilateral triangle.
a cylindrical rod of steel e 30 x 106 psihaving a yield strength of 45000nbsppsi is to be subjected to a load of 2500
An open pan 210 mm in diameter and 75 mm deep contains water at 25?C and is exposed to dry atmospheric air. Calculate the diffusion coefficient of water in air. Take the rate of diffusion of water vapour is 8.52 x 10-4 kg/h.
A heat pump with a coefficient of performance of 3.8 provides energy at an average rate of 75,000 kJ/h to maintain a building at 21oC on a day when the outside temperature is 0oC. If electricity costs 8 cents per kW. h. Determine the electric power r..
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