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A cylindrical plug of a gummite* is placed in a cylindrical hole in a rigid block of stif?te.* Then the plug is compressed axially (parallel to the axis of the hole). Assume that the plug exactly ?ts the hole and that the stif?te does not deform at all. Assume elastic deformation and that Hooke's law holds. Derive an expression for the ratio of the axial strain to the axial stress, εa/σ a, in the gummite in terms of the Young's modulus, E, and Poisson's ratio,υ, of the gummite.
an aluminum alloy specimen brought to tensile test had frac12 inch2 cross sectional area. it was tested to fracture and
1- describe some of the important steps in the preparation of a written document. what role do written documents play
At steady state, a 750 W electric resistance heater has an outer surface temperature of 450 degrees C on its heating elements. Find the rate of heat transfer from the heater as well as the rate of entropy production in the heating elements
draw the free-body diagram and write the corresponding elemental equation for a spring element with the following
an object moves with constant acceleration 4.20 ms2 and over a time interval reaches a final velocity of 12.6 ms. a if
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for fluid flow through a tube with a uniform surface heat flux how does the mean temperature of the fluid vary with
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Air passes through a gas turbine system at a rate of 4.5kg/s. It enters with a velocity of 150m/s and a specific enthalpy of 3000kJ/kg. At exit, the velocity is 120m/s and the specific enthalpy is 2300kJ/kg. The air has a heat loss to the surrounding..
the average wind speed on the north texas plains around amarillo is approximately 6 ms. an efficient wind turbine can
an expansion in a gas turbine can be approximated with a polytropic process with exponent n 1.25. the inlet air is at
a whip crack is illustrated below. to crack the whip it is thrown forward with a velocity of 10 ms and the handle is
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