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Lead experiences corrosion in an acid solution according to the following reaction, Pb + 2H+ rightarrow Pb2+ + H2 The rates of both oxidation and reduction half reactions are controlled by activation polarization as given below. Compute the rate of oxidation of Pb (in mol/cm -s). Compute the value of the corrosion potential. How long do you think corrosion would take to eat away a 0.1-mm thick surface layer of the lead sheet?
If the deflection of the gae fluid height, h, is 2 inches find the 1) velocity of the jet air and 2) the force exerted on the disk by the air.
Determining the Exit Temperature and Power Input of Air through a Compressor, Air at 150Pa and 310K enters a compressor of inlet diameter 2cm. The Compressor raises the pressure to 3.5 times the inlet pressure
an electrical wire having a diameter of 1.5 mm and covered with a plastic insulation thickness 2.5 mm is exposed to
the work on a system with a mass 100 lbm is known to be 10 btus. if there is no change in potential energy and the
Determine an equation for the efficiency of the gear train in terms of the load (torque) on shaft 2 and determine the input power required at shaft 1.
an air-standard otto cycle has a compression ratio of 7.5. at the beginning of compression p1 85 kpa and t1 305 k.
a man of mass m1 walks along a plank of length l with a constant acceleration a relative to the plank. the mass of the
steam enters a diffuser at 20 psia and 240of with a velocity of 900 fts and exits as saturatednbspvapor at 240of and
in a particular location the horizontal component of the earths magnetic field has a magnitude of 2.00 10-5 t. an
evaluate and compare the lower heating values per unit mass of stoichiometric mixture and per unit volume of
sleep apnea is a disorder involving brief interruptions of breathing during sleep. many patients who suffer from sleep
in the bird-on-a-wire group work example how do you expect the angle and tension to be related? remember that this is
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