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Using powers of 10, estimate the number of quantum states accessible to an outer electron on an atom, by estimating the size of an atom and knowing that typical binding energies are a few eV. (That is, if the kinetic energy is greater than a few eV then the electron is no longer on the atom.) The number of states = VrVp/h3.)
a well-insulated turbine operating at steady state develops 28.75 mw of power for a steam flow rate of 50 kgs. the
the suspension of an automobile can be approximately by the simplified spring-dashpot determine and plot the amplitude
Determine the figureof merit described in Problem 9.4 for each of these three pressures. Which air pressure will provide the most effective cooling?
A gear set has a module of 5mm, a 20° pressure angle, and a 24-tooth case-iron spur pinion driving a 48-tooth case-iron gear. The pinion is to rotate at 50 rev/min. What horsepower input can be used with this gear set if the contact stress is limited..
if the density of air is 1.2 kgm3 at the inlet and 1.05 kgm3 at the exit determine the percent increase in the velocity
An 80-mm × 40-mm rectangular beam is made of heat treated AISI 4340. On the tension side of the beam, a transverse crack of length 10 mm is discovered. Determine the magnitude of the bending moment M that will cause brittle fracture.
an inverted cone is placed in a water tank. if the weight of the cone is 16.5 n what is the tensile force in the cord
A horizontally oriented copper rod length of l=1m is rotated about avertical axis passing through its middle. what is number of rps at wich this rod ruptures?
Calculate the air standard cycle efficiency. If the introduction conditions are I bar and 24 °C, and the maximum cycle temperature is 1400 °C. calculate the mean effective pressure based on the air standard cycle.
Determine Temperature of ball after 10 second and Time for ball to cool to 400oC - Alloy steel ball of 2 mm diameter heated to 800oC is quenched in a bath at 100oC.
A 10kg block sliding along a frictionless surface with a velocity of 10m/s comes into contact with a horizontal, uncompressed linear spring. If the spring slows the block down to 0 m/s while being compressed a total of 30 cm, what is its spring const..
The combined action of the three forces on the base at O may be obtained by establishing their resultant through O. Determine the magnitudes of R and the accompanying couple M.
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