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Problems involving viscous dissipation of energy are dependent on viscosity μ, thermal conductivity k, stream velocity Uo, and stream temperature to. Group these parameters into the dimensionless Brinkman number, which is proportional to μ.
If the weather report says that it is 60°F outside, the barometric pressure is 28.50 in Hg, and the relative humidity is 85.0%, find the following values. The partial pressure of water. The mole fraction of water vapor in the air
a stone is thrown vertically upward from a point on a bridge located 40 m above the water. knowing that it strikes the
a long time ago the specific heat at constant volume of gases cv was determined indirectly from cp measurements and
Calculate the crack length after cycles and subjected to a cyclic stress normal to the crack
Consider laminar flow of a fluid through a square channel with smooth surfaces. Now the average velocity of the fluid is doubled. Determine the change in the head loss of the fluid. Assume the flow regime remains unchanged.
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 390 kPa and 140 degrees C. Determine the heat loss or gain during this process.
a 15-mm od copper tube conveys hot hydraulic oil. in order to dissipate the heat and cool the oil someone suggests that
at a depth of 18360ft fillers on the deepwater horizon encountered fluid at a reservoir pressure of 8900 psia. in order
A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. What is the linear attenuation coefficient for this material? What is the half-thickness? What is the mean-free-path length for 1.25 MeV photons in this material?
obtain the continuity equation in cylindrical coordinates by expanding the vector form in cylindrical coordinates. to
Calculate the torque required at input T and calculate the magnitude and direction of the torque required to hold the gearbox stationary (holding torque Th). Show the direction of the holding torque applied to the shaft with the aid of a sketch.
the hydraulic actuator moves the pin p upward with velocity v 2j ms. determine the velocity of the pin in terms of
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