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Determine the least area of a cross section of an ASTM-a36 steel bar required to support a tensile load of 100,000 lbs. the allowable unit stress is 36,000 psi. (Ans. nearest 100th of an inch squared)
a 20 cm diameter sphere is made of a heat-generating material that produces 106 wm3. the sphere is cooled by 20oc air
Explain the principle of operation of an AB encoder and how this is used to read an optical encoder. Draw a diagram of the essential features of an optical encoder.
a water line is planned to connect a new reservoir to an existing water treatment plant. the average water surface
the position of a particle along a straight line is given by s1.5t3 - 13.5t2 22.5t ft where t is in seconds. determine
What is the communication time if the local conditions limit spacecraft visibility to elevation angles larger than = 18 degrees?
Freshwater is impounded to a height of 11 ft behind a dam as shown. Determine the magnitude and location of the resiltant force on the 4-ft by 4-ft gate.
a hydrogen gas in a pistoncylinder assembly at 280k 100 kpa with a volume of 0.1 m3 is now compressed to a volume of
an ideal gas p? mrt is heated at constant volume until its temperature is doubled and then cooled at constant pressure
A large oil reservoir has a pipe of 4 in ID and 7000-ft length connected to it. The free surface of oil (kinematic viscosity = 1 x 10^4 ft2/s) in reservoir is 10 ft above the centerline of the pipe and can be assumed to remain at this fixed elevation..
For the cylinder-piston shown, piston is initially resting on the lower stops. The cylinder contains 1 kg of water at 1 bar and x = 0.64. A pressure of 3 bars is required to move the piston. The system is now heated until the water reaches 600° C. Sh..
a tensile member of 2024-0 aluminum alloy used for aircraft fuselage had an original cross-sectional area of 4.0square
A hydraulic lift must lift 7000 lbs using oil that is under pressure of 130 lbs/in^2. what must be the surface area of the lift cylinder?
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