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A jet engine rotor weighs 6700 N. Determine the amount that the center of gravity of the rotor mass may be eccentric from the axis of rotation to produce an inertia force equal to the weight of the rotor at speeds of 1000, 5000, and 10,000 rpm.
At steady state, a 15-W curling iron has an outer surface temperature of 90°C. For the curling iron, determine the rate of heat transfer, in kW, and the rate of entropy production, in kW/K.
If it is desired to triple the rate of heat transfer from the bare hot surface, determine the number of fins that needs to be attached.
A 400 L rigid tank contains 5 kg of air at 25 degrees C. Determine the reading of the pressure gauge if the atmospheric pressure is 97 kPa.
Steam enters a diffuser at 20 psia and 240oF with a velocity of 900 ft/s and exits as saturated vapor at 240oF and 100 ft/s. The exit area of the diffuser is 1 ft2. Determine (a) the mass flow rate of steam and (b) the rate of entropy generation.
a sphere moves horizontally through still water at a speed of 11 fts. a short distance directly ahead of the sphere
a 1-mm-thick bcc iron foil is used to separate a region of high nitrogen gas concentration of 0.1 atomic percent from a
non-equilibrium statistical treanor distribution for vibrationally excited molecules. based on the non-equilibrium
Reduce the diameter to 15 cm (with ε=1 mm), and compute the flow rates for water at 20°C. These flow rates distribute in nearly the same manner as in Prob. P6.121 but are about 5.2 times lower. Can you explain this difference?
how to solve the following1 for integrated circuits al lines are commonly placed on si to act as electrical conductors
use the generalized virial equation to speculate whether a small leak in an h2 line at 300 bar and 298 k might raise
Find the expected flow rate and the required pump power - write down the appropriate N-S equations and boundary conditions and solve for the average velocity V as a function
refrigerant 134a at -10degc 1.4 bar and a mass flow rate of 280 kghr enters an insulated compressor operating at steady
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