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Use Excel (or some other computer program) to make an accurate plot of the Goodman relationship for a steel whose tensile strength is 1250 MPa and whose fatigue strength is 400 MPa. If this steel is loaded sinusoidally with an alternating stress of 150 MPa, what is the maximum stress that can be applied to the specimen without failure?
Calculate the concentration of vacancies in Pb at its melting temperature of 327oC. Assume an energy for vacancy formation of 0.55 eV/atom. Lead has an atomic weight of 207.2 g/mol and a density of 11.35 g/cm3.
it is observed that when a regulation 20 ounce basketball is dropped from a height of 1.3m onto a floor it bounces back
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molecules that are of density row180 kgm3 and spe- cific heat cp 3000 jkg k have an initial relaxed length of l2nm.
mass 8kg stiffness 90nm initial displacement 0.1m initial velocity 0.9ms assume the system is critical damped. find the
2 instructors grade on a the curve that is give a fixed percentage of each various leter grades to each of their
refrigerant 134-a is contained in a 4 ft3 tank at 160 lpfin2. at the beginning the saturated vapour occupies a volume
a fan drawing electricity at a rate of 1.5 kw is located within a rigid enclosure measuring 3m x 4m x 5m. the enclosure
consider a cylinder containing 4 moles of compressed argon to 10 bar and 298 k. the cylinder is housed in a big lab
there are three phases in a reservoir oil gas and water. assuming that all pores are occupied by fluids and the volume
water is contained in a vertical cylinder fitted with a frictionless piston and two sets of stops. the volume is 0.1m3
one-fourth kg of a gas contained within a piston-cylinder assembly undergoes a constant pressure process at 5 bar. the
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