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1.The following truestresses produce the corresponding true plastic strains for a brassalloy:
True Stress(psi) True Strain
60,000 0.15
70,000 0.25
What true stressis necessary to produce a true plastic strain of 0.21?
2.A coal mine's entry and breakthrough centers are set at 60ft with 20ft-wide openings. The 6ft coal seam lies 1,000ft below the suface, and the specific gravity of the overburden is 2.4. If the compressive strength of 4in. cubic coal specimens is 5,000psi, dtermine the safety factor for compressive failure of the pillers utilizing the Holland-Gaddy relationship.
If the flowrate is Q = 25 ft^3/s and the upstream depth is 2 ft, determine the downstream depth. Sketch the specific energy diagram and indicate its important characteristics. Note that the specific discharges are different.
A cube has side dimensions of 18.00 in. It is made of steel having a specific weight of 491 pcf. What force is required to hold it in equilibrium under mercury
A tow truck is using a cable to pull a car up a 15 degree hill. If the car weighs 4000 lbs and the cable has a diameter of .75 inches, find the stress in the cable when the truck comes to a stop while on the hill.
A bicyclist leaves from her home at 9am and rides to a beach 40 miles away. Because of a breeze off the ocean, the temperature at the beach remains 60 degrees F throughout the day.
A soil borrow material in its natural state in the ground has a unit weight of 86 pcf. Its natural water content is 9%. What is the dry weight of this material
A heat pump that operates on the ideal vapor compression cycle with refrigerant 134a is used to heat water from 16 to 56 degrees Celsius at a rate of 0.20kg/s. The condensor and evaporator pressures are 1.5 and 0.35 Mpa, respectively.
the scale of a spring balance reading from 0 to 235 n has a length of 13.0 cm. a fish hanging from the bottom of the
for this purpose replace this force by its equivalent of two forces at At Ft parallel and Fn perpendicular to the beam. Determine Ft and Fn.
A particle is traveling in a straight line at a constant speed of 22.9 m/s. Suddenly, a constant force of 10.7 N acts on it, bringing it to a stop in a distance of 63.6 m.
For a given tank circuit resonance frequency, what is the parameter that determines the bandwidth
Compute the ratio of the nominal flexural strength of the beam to the maximum service load moment, and compare your findings to the ACI load factors and strength reduction factor.
A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively. The velocity head and pressure head at lower ends are 0.203 m and 5.407 m respectivel..
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