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Given that at typical liquid densities p σ3 ≈ 1 (p = N/V, and σ is the diameter of a molecule), estimate the mean free path of and collision frequency of a molecule in a room temperature liquid. Compare these numbers with gas phase values.
an elevator weighs 1000lb and carries a load of 600 lbs and decends at 20fts. the cable that supports the elevator has
For both arrangements draw a bolt-force-versus-time plot for the case involving repeated application and removal of the 1000-N external loads.
a piston-cylinder device contains an ideal gas. the gas undergoes two successive cooling processes by rejecting heat to
air enters an adiabatic compressor at 197 kpa and 316 k and exits at a temperature of 508 k. determine the power kw for
The properties given in the box below are for the whole Ibeam. The position of the centroid of the half-section (relative to the top of the section) is shown in the figure.
A steam turbine operating at steady state produces 6,000 hp with a heat transfer to the surroundings at a rate of 360,000 Btu/hr. Steam enters at 600 F, at 200 psi and exits as a saturated vapor at 8 psi. Neglecting the KE and PE determine the volume..
Calculate average velocity of the water leaving the disks. Also, calculate the average velocity of the water between the disks at a position where the radius of the disks is 10 cm.
the bottom hole pressure in a well has been declining at a constant rate of 1.4 psiday. the reservoir characteristics
What is the maximum normal strain ε at the top and bottom of the bar?
for various fuels including at least methane ch4 octane c8h18 kerosene c12h26 methanol ch3oh ethanol c2h5oh and
Assuming the pulley is a uniform disk with a mass of 0.31 {rm kg}, find the speed of the block after it has fallen through a height of 0.50 {rm m}.
an industrial machine is being cooled by 0.4 kgs water at 15 degrees c that is chilled from 35 degrees c by a
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