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1. What is the slenderness ratio of a solid circular bar 30 in. long and 2 in. in diameter?
2. Calculate the slenderness ratio of a rectangular bar 1.5 in. x ¾ in. and 20 in. long.
3. Calculate the compressive stress of a hollow circular machine part ¾ in. long and made of steel with an outer diameter of 4 in. and an inner diameter of 2 in. Use 80,000 lb as a compressive force.
an air compressor receives atmospheric air at t0 17degc 100 kpa and compresses it up to 1400 kpa. the compressor has
helium has the lowest normal boiling point of any of the elements at 4.2 k. at this temperature the enthalpy of
most of the energy we consume as food is converted to thermal energy in the process of performing all our bodily
A 4000 lb meteor hits the earth's surface at 15,000 ft/s. How much heat, in Btu, is generated in the collision?
the centerboard of a sailboat is 2.5m long and has a chord of 1m. approximate the centerboard as a flat plate in water
A turbine extracts energy from water flowing through a 11-cm-diameter pipe at a pressure of 700 kPa with an average velocity of 11 m/s. If the turbine is 90 percent efficient, how much energy can be produced if the water is emitted from the turbine t..
5 lbm per second of saturated water vapor enters an adiabatic compressor at 300oF where it is compressed to 800 psi. If the power input is 2,150 hp, what is the isentropic efficiency?
a steam power plant operates as a reheat rankine cycle. steam enters the high pressure turbine isentropic efficiency 90
for the ideal air standard diesel cycle with a volumetric compression ratio of 17 1 calculate the efficiencies for
(a) If the outlet temperature of the oil is 60°C, determine the total heat transfer and the outlet temperature of the water. (b) Determine the length required for the heal exchanger.
a catheter is a specialised needle intended for long-term insertion into a vein in a patients arm. engineers are
determine the radial acceleration of a point on the outer surface of the 36 inch diameter tires of a jet-powered car
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