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Water is flowing in a formed, unfinished concrete rectangular channel 3.5 m wide. For a depth of 2.0 m, calculate the normal discharge and the Froude number of the flow. The channel slope is 0.1 percent.
a company crates its products for shipping as shown base plate with two springs holding a crate- mass suspended in
The stators in a gas turbine are designed to increase the kinetic energy of the gas passing through them adiabatically. Air enters a set of these nossels at 270 psia and 795 F with a velocity of 97 ft/s and exists at 200 psia and 550 F. Calculate the..
While the outer surface exposed to the ambient air at 30oC with heat transfer co-efficient of 17 W/m2K. Calculate heat loss for 3 m length of the tube.
The diffusion coefficient for Cr+3 in Cr2O3 is 6E-15 cm2/s at 727 C and is 1 E -9 cm2/s at 1400 C. Determine the activation energy and the constant Do
two mating spur gears are 20 mm wide and the tooth profiles have radii of curvature at the line oif contact of 10 and
When music wire (100% pearlite) is cold drawn, the pearlite spacing is reduced in proportion to the wire diameter. That is, d/do = D/Do, where d is the pearlite spacing and D is the wire diameter.
The other half of the satellite is and tip temperature for GS = 0 and an extremely large value of the thermal conductivity. Compare coated with a diffuse gray material with a2 = 0.3.
An adiabatic heat exchanger is used to heat cold water at 8°C entering at a rate of 3 kg/s by hot air at 150°C entering also at rate of 3 kg/s. If the exit temperature of hot air is 30°C, what is the exit temperature of cold water? Use constant speci..
the temperature of the air at the exit, in 8F
Carbon dioxide gas enters a pipe at 3 MPa and 500 K at a rate of 2 kg/s. CO2 is cooled at constant pressure as it flows in the pipe and the temperature of CO2 drops to 450 K at the exit.
A closed system undergoes a process in which work is done on the system and the heat transfer Q occurs only at temperature Tb. For each case, determine whether the entropy change of the system is positive, negative, zero, or indeterminate.
Consider a mass going through a polytropic process where pressure is directly proportional to volume (n=-1) the process starts with P=0,V=0 and ends with P=600kPa,V=0.01m^3. Find the boundary work done by the mass.
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