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In a pollution control experiment, minute solid particles (typical mass 1 X 10 ^-13 slug) are dropped in air. The terminal speed of the particles is measured to be 0.2 ft/s. The drag of these particles is measured by F_D = kV, where V is the instantaneous particle speed. Find the value of the constant k. Find the time required to reach 99% of the terminal speed.
using the fact that the tension in the rope must remain constant in all sections of the rope calculate the total force
calculate the position of the quasi-Fermi levels for electrons and holes with respect to the intrinsic level (assume that ni=1.5x10^10cm^-3).
a new building to be located in a cold climate is being designed with a basement that has an l200 mm thick wall. inner
a 0.5 m3 rigid vessel initially contains saturated liquid-vapor mixture of water at 100deg c. the water is now heated
a rigid tank contains 20 lbm of air at 50 psia and 80o f. the air is now heated until its pressure doubles. determine
a smoke stream from a smoke generating tube is often used as a simple method of flow visualization in wind tunnels.
an ideal reheat rankine cycle with water as the working fluid operates the inlet of the high-pressure turbine at 8000
q1.a single stage reciprocating compressor has a swept volume of 0.4 litres and operates at 1440 rpm through a pressure
determine the radius r of an impurity atom that will fit into a tetrahedral site of bcc ironr1.241 angstroms crystal
The motion of a particle in defined by the relation x = t3 - 15 t2 - 20, where ‘x' is expressed in metres and ‘t' in seconds. Determine the acceleration of the particle at t = 3 seconds.
the force exerted on the cue ball by the cue is horizontal. determine the value of h for which the ball rolls without
a thin-flat plate having a length of l 10 cm is heated by a constant-heat flux from the bottom and cooled by an air
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