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Two reservoirs, which differ in surface elevation by 40 m, are connected by a new commercial steel pipe of diameter 8 cm. If the desired flow rate is 200 N/s of water at 20°C, what is the proper length of the pipe?
A gas mixture contains 20% CO2 and 10% H2o by volume. The total pressure is 2 atm. The temperature of the gas is 927oC. The mean beam length is 0.3 m. Calculate the emissivity of the mixture.
what is the specific heat of air in US customary units given that its value in SI units is approximately 1 kN.m/kg.K?
The required effort is 75 N, applied at the end of an operating handle 600 mm long. For these operating conditions determine (a) the mechanical advantage, (b) the velocity ratio, (c) the efficiency of the machine.
five 100 ohm resistors each having 5 tolerance are connected in series. what is the overall nominal resistance and
a circular coil having 19 turns and a radius of r 17.6cm carries a current of 3.80a. it is placed in a uniform
the surface pressure of venus is about 90 bar and the surface temperature is ap-proximately 880 degrees f. the
The cost of operating a large ship (CO) varies as the square of its velocity (v); specifically, CO = knv2 , where n is the trip length in miles and k is a constant of proportionality. It is known that at 12 miles/hour, the average cost of operation i..
in each case calculate the biot number for the object and indicate whether or not the lumped approximation is valid.a a
A fire truck draws water from an open constant-level reservoir through a hose of 0.2 ft2 cross section. The water is discharged from the pump through another 0.2 ft2 hose to a surge tank pressurized to 120 psig with air at the top. The pump adds 970 ..
a rigid tank contains an ideal gas at 40u2070c that is being stirred by a paddle wheel. the paddle wheel does 200 kj of
Solve the preceding problem for the following data: diameter 1.0 m, thickness 48 mm, pressure 22 MPa, modulus 210 GPa, and Poisson's ratio 0.29.
muddy meadows earthmoving can purchase a bulldozer for 80000. after 7 years of use the bulldozer should have a salvage
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