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For the pitot-static pressure arrangement of Fig. P6.136, the manometer fluid is (colored) water at 20°C. Estimate
(a) the centerline velocity,
(b) the pipe volume flow, and
(c) the (smooth) wall shear stress.
A piston-cylinder device contains helium gas initially at 145 kPa, 20 degrees C, and 0.5 m^3. The helium is now compressed in a polytropic process (PV^n = constant) to 400 kPa and 140 degrees C. Determine the heat loss or gain during this process.
a regional power plant is updating one of its existing 25mw natural gas turbans with a new more efficient model as a
assume the van der waals equation of state holds for the n-propane molecule c3h8. find values for the constants a and b
Steam enters a counter flow heat exchanger operating at stead state at 0.07 MPa with a specific enthalpy of 2431.6 kJ/kg and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.5 kh/min. A separate stream of air with mass fl..
why does a car engine stop when we turn the key even when the vehicle is running? the engine should run on alternator
sea-level air is drawn from the atmosphere through a duct and into a vacuum tank. if the air remains a perfect gas at
Determine the rate of metal removal when the wheel is engaged in the work and if the number of active grits per square inch = 200, determine the average chip length and the number of chips formed per time
Mpas Calculate the difference between max an min principal stresses Does the component fail according tresca criterion ?
in space a novel heat rejection scheme that has been proposed for heat dissipation is termed a liquid droplet radiator
if p150kn determine the elastic elongation of rod bc and the decrease in its diameter. rod bc is made of a-36 steel and
If the pressure drop in a 100-m section of horizontal 10-cm-diameter galvanized iron pipe is 200 kPa, estimate the ?ow rate if the liquid ?owing is (a) water at 20-C, (b) SAE-10 oil at 80-C, (c) glycerin at 70-C, and (d) SAE-30 oil at 20-C.
Consider a 100-mm-thick plate (k = 45 W/m · K. p = 7800 kg/m3 · cp = 500J/kg · K) that is initially at a uniform temperature of 300°C and is heated (on both sides) in a gas-fired furnace for which T8 = 700°C and h = 500 W/m2 · K. How long will it ..
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