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When the channel of triangular cross section shown in Fig. P10.78 was new, a flowrate of Q caused the water to reach L = 2 m up the side as indicated. After considerable use, the walls of the channel became rougher and the Manning coefficient, n, doubled. Determine the new value of L if the flowrate stayed the same.
a particular coal has the following mass analysis inert ash 10 percent nitrogen 2 percent oxygen 12 percent sulfur 1
air enters a machine at 373 k with a speed of 200 msec and leaves it at the temperature of the standard sea level
at intel 0.00005 of manufactured chips have defects. in a day 5 million chips are produced. what is the probability
A pressure guage reads in tuscaloosa alababama 16 psi. can this pressure be a vacuumed pressure? Why or why not? if you think it can convert it to absolute pressure. If you think it cannot assume that it is a gauge pressure and convert to absolute pr..
Determine the speed of sound at 20 degree C in (a) air, (b) helium, (c) methane. Answer in m/s. also determine the same, using a temperature of 40 degrees Celsius
Find the rms value of each of the following periodic currents:
A one dimensional wall of material (Kw=10w/mk) is 50 mm thick with uniform heat generation q‘‘‘=5*10^6w/m^3. The left side is exposed to a fluid hl=500w/m^2k at 20 degree Celsius. The right side has a 10mm thick plate attached that has no heat genera..
Consider an n-type material at 300 K with donor levels 0.02 eV below the conduction band
an insulated rigid tank is divided into two chambers by a membrane. chamber a has a volume of 3 ft3 and intially
Liquid propane (C3H8) at 258C, 1 atm, enters a well- insulated reactor operating at steady state. Air enters at the same temperature and pressure. For liquid propane, h8f 5 2118,900 kJ/kmol. Determine the temperature of the combustion produc..
If the distance a can be varied between 0 and 40 in., what is the maximum possible value of Qcr What is the corresponding value of the distance a?
Determine the magnitude and nature of the stress induced in the material (a) if the temperature falls to 25 °C, (b) if the temperature rises to 95°C.
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