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Bar AB has a cross-sectional area of 1200 mm2 and is made of a steel that is assumed to be elastoplastic with E = 200 GPa and σY = 250 MPa. Knowing that the force F increases from 0 to 520 kN and then decreases to zero, determine
(a) the permanent deflection of point C,
(b) the residual stress in the bar.
air flows steadily through an insulated 5 cm constant diameter duct fitted with a fan. the air enters the suction side
Using Dimensional Analysis, derive an expression for the drag coefficient of a high speed flow. At high speeds, you may assume the total drag depends on the fluid density p, average velocity U, Length scale of the object L, but does not depend on the..
the velocity of a particle traveling in a straight line is given by v6t - 3tsup2 ms where t is in seconds. if s0 when t
Simplify the following terms and get rid of the brackets as much as possible. All matrices in the equations below are square 3x3 matrices, [alpha] is a scalar, and Q is an orthogonal matrix.
Saturated ethylene glycol at 1 atm is heated by a horizontal chromium-plated surface which has a diameter of 200 mm and is maintained at 480 K. Estimate the heat- ing power requirement and the rate of evaporation.
you are working with a semiconductor a write an expression for the conductivity of this semiconductor if it has an
An extension cord made of two wires of diameter 0.129 cm (no. 16 copper wire) and of length 2.4 m (8 ft ) is connected to an electric heater which draws 16.0 A on a 120-V line.How much power is dissipated?
compressive centric forces of 160 kn are applied at both ends of the assembly shown by means of rigid plates. knowing
How much extra water does a 147-lb concrete canoe displace compared to an ultra-lightweight 40-lb Kevlar canoe of the same size carrying the same load?
An amount P must be invested now to allow withdrawals of $1,000 per year for the next 15 years and to permit $300 to be withdrawn starting at the end of year 6 and continuing over the remainder of the 15-year period as the $300 increases by 6% per ye..
the 50-kg crate is now projected down an incline as shown with an initial speed of 7 ms. investigate the time t
Nitrogen flows through a converging-diverging nozzle designed to operate at a Mach number of 3.0. If it is subjected to an operating pressure ratio of 0.5: Determine the Mach number at the exit. What is the entropy change in the nozzle?
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