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Consider incompressible viscous flow between two very long plates, separated by a distance h. The bottom plate is stationary, while the top plate moves at a velocity of V. The flow is subjected to a constant pressure gradient dp/dx.
Show that reversed flow (u < 0) will occur near the lower flat plate, whenever the parameter {h2/(2mV)} dp/dx is greater than unity.
Solve for u as a function of y, as done in the class for Couette flow. Determine when the velocity slope du/dy becomes negative at the lower plate.
an electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive
Determine the COP of the heat pump that applies energy to a house at a rate of 4500kj/h for each kW of electric power it draws. Also, determine the rate of the energy absorption from the outdoor air.
a ball is shot vertically into the air 50 m/s 108m from the ground. 6 seconds later, another ball is shot vertically into the air 20 m/s 58m from the ground. Find the distance where they meet in the air from the ground.
we are separating ethanol and water. all percentages are mol. find the q values and plot the feed lines. a feed is 60
one kilogram of air is compressed polytropically n1.3 from a pressure of 100 kpa to a pressure of 1 mpa as the volume
1. the initial conditions for an air-standard otto cycle operating with a compression ratio of 81 are 95 kpa and 17o c.
during a simple orienteering exercise a person walks 250 m south then 620 m at an angle of 30 north of east and finally
Steam at 10bar and 0.95 dry flows at 130 m/sec in a pipe. It is throttled to 8 bar and the flow rate is 12 kg/sec. Assuming velocity in the pipe on the down stream side of the valve is 160 m/sec. Find the final condition of steam and the pipe diam..
two low-carbon steel plates of 12 mm thickness are butt-joined by welding. sketch to show the expected weld bead
a crate containing 40 bricks each of mass 1.3kg is placed on a storage framework as shown.a calculate the reaction
an amusement park at the bottom of niagara falls wants to install a water turbine to produce 100 kw power. water assume
a wire of radius r length l and initial temperature ti is cooled by a fluid of temperature tf at time t0. the heat
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