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Question :a 405-n rightward force is used to drag a large box across the floor with a constant velocity of 0.678ms. The coefficient of friction between the box and the floor is 0.795. Determine the mass of the box.
The molecular diffusion coefficient of taxol in fluid blood is Dab=1.0*10^-6 cm2/s. A) what is the convective mass transfer coefficient, kc around the outer surface of the cylindrical portion of the stent, for the solute Taxol?. B) what is the minimu..
A 20,000 gal. capacity tank contains 8,000 gals. ofwater/solids mixture at a density of 12 pounds per gal.(ppg). Fresh water (8.34 ppg) is added at a rate of 10 gallons per minute(gpm).
Initially the air in this tank is at 20 psia and 70 degrees F. Presuming that the ank is well insulated determine the temperature and mass in the tank when it is filled to 120 psia.
A sample of air has been collected from above an air stripping tower to evaluate its performance and to determine if toxic air emission standards are being violated
A 600 mm long solid steel shaft is to transmit a torque of 30 N-m, G=90 GPa, diameter 15mm. Determine (a) Maximum shear stress, and (b) Angle of twist (phi) at the end.
Steady, incompressible flow is given by the following flowfields (a) u=-2y, v=-2x, and (b) u= 0.5+1.2x, V= -2-1.2y.Determine
The potentiometric surface elevations at two observation wells 1000 m apart are 52.35 m and 56.90 m. If the horizontal hydraulic conductivity of the auquifer is 25 m/ day determine the flow rate per unit width of the auquifer.
Determine the work done on the piston by the gas, in kJ/kg of mixture. Treat the water vapor as an ideal gas.
Two glass capillary tubes of inside diameters of 20 and 13 microns are used to test the capillary rise in an annular cross section .The wall thickness of each capillary is 2 microns .The smaller capillary tube is inserted in the larger one so that..
A fire has destroyed thousands of acres of forest. Seedlings have been planted in the area but are being destroyed by the local wildlife. Develop a way to reforest the region by preventing the wildlife from eating the seedlings
Transportation need to evaluate the time spent in traveling from city A to city B. The distance between the two cities is a variable because the macro developed is to be used for other cities. 50% of travel time is done at a speed of 30 miles an
Water is at 9000 kPa and 300 degrees celcius and flows through a partially open valve. Pressure immediately after the valve is measured to be 600 kPa. Calculate the specific internal energy of the water leaving the valve
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