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A plate 50 mm wide and 15 mm thick is loaded in tension. The plate is made from steel with yield strength of 1500 MPa and fracture toughness of 100 MPa?m. If the plate has a center crack of length 15 mm, determine the maximum load that can be applied for the plate not to fail by yielding or fracture (rapid crack extension). Assume the correction parameter for stress intensity factor to be 1.
a bowling ball has the mass m the radius r and the radius of gyration kg. the ball is rolling on a straight lane with
what energy practices today are unsustainable? list three examples and write a short paragraph on each explaining why
the wheel roles without slipping such that at the instant shown it has an angular velocity and angular acceleration.
a piston cylinder device contains 1 kg water at 20oc with a volume of 0.01 m3 by mistake someone locks the piston
a hot water stream at 80o c enters a mixing chamber with a mass flow of 0.5 kgs where it is mixed with a stream of cold
two kilograms of refrigerant134a initially at 2 bar and occupying a volume of 0.12 m3 undergoes a process at constant
In order to increase production rate, a reactor setpoint was increased from 160 psig to 190 psig. The reactor pressure transmitter was recalibrated from 0- 200 psig to 0- 300 psig. What is the percent span for the old and new setpoints?
drag measurements were taken for a sphere with a diameter of 5 cm moving at 4ms in water at 20 degrees celsius. the
a particle of mass m is projected from point a with an initial velocity v0 perpendicular to line oa and moves under a
Determine the angle theta degrees that requires the minimum torque T to keep the seam closed. (Hint: use Mohr's circle). Give the answer in degrees.
a tunnel 150 m long 7.2 m high and 5.8 m wide with a flat roof is to be constructed 60 m beneath the ground. the
a battery can be modeled as an ideal source with an internal resistance - a constant voltage source with the resistor
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