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As shown in Fig, a liquid column of height h is confined in a vertical tube of cross-sectional area A by a stopper. At t = 0 the stopper is suddenly removed, exposing the bottom of the liquid to atmospheric pressure. Using a control volume analysis of mass and vertical momentum, derive the differential equation for the downward motion V(t) of the liquid. Assume one-dimensional, incompressible, frictionless flow.
Develop a better braking system for in-line skates. Develop a recliner chair that incorporates six built-in surround sound speakers in the unit. Develop a hands-free flashlight.
a civil engineer must design a wheelchair accessible ramp next to a set of steps leading up to a building. the height
the tank has a 180mm diameter and 12 mm wall thickness. knowing that the tank contains compressed air under a pressure of 8 Mpa, determine the magnitude t of applied torque for which the maximum normal stress in tank is 75 Mpa.
Diffusion of carbon into BCC iron for 12 hours at a temperature of 5000C results in a carbon concentration of 0.2 wt% at a depth 2 mm from the surface. At what depth would the concentration be 0.2 wt%, if the diffusion occurred for 6 hours at 8000C?
A plate, 0.001 in distant from a fixed plate, moves at 2 feet per seconds and requires a force of 0.04l bar per feet square to maintain this speed. determine the fluid viscosity of the substance between the plate.
a fenced enclosure consists of a rectangle of length l and width 2r and a semicircle of radius r as shown in figure
a u-tube manometer is initially filled with water but exposed to a pressure difference such that the water level on the
Draw the shear force diagram for the beam and determine the position and magnitude of the maximum bending moment.
the pressure in a partially evacuated enclosure is 26.8 in hg vacuum when the local barometer reads 29.5 in hg.
a can of juice consists of .06 kg of aluminum and .355 liters of liquid. consider the contents to be saturated liquid
a mass of 2.4 kg of air at 150 kpa and 12ordmc is contained in a gas-tight frictionless piston-cylinder device. the air
A rigid tank is divided into two compartments as shown. The partition is removed and a final temperature of 100° C is reached. Determine the heat transfer during the process.
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