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An 80-mm × 40-mm rectangular beam is made of heat treated AISI 4340. On the tension side of the beam, a transverse crack of length 10 mm is discovered. Determine the magnitude of the bending moment M that will cause brittle fracture.
a 48-tonne ferry strikes a dock at 3 kmh. what average force does it exert on a dock if it is brought to rest over a
suppose you have a 50 kg block of steel. if you have 103 exajoules at your disposal how many times could you push this
a cubic inch of fe is subjected to a tensile stress of 25 ksi. take poissons ratio to be .291 and youngs modulus to be
the wheel has a mass of 25 kg and a radius of gyration k0.15m. it is originally spinning at w140 rads. if it is placed
a fluid of viscosity micro is placed between two horizontal circular disks of the same radius r. the disk at z 0 is
air is compressed by a 30-kw compressor from p1 to p2. the air temperature is maintained constant at 25 degrees c
Why do you think it is important, when using a stroboscope, to start at a very high frequency and slowly reduce the frequency to the point of synchronisation?
a frictionless piston-cylinder device contains 2 kg of nitrogen at 100 kpa and 300k. the nitrogen is compressed in a
one-half kg of refrigerant-22 is contained in a piston-cylinder assembly initially saturated vapor at 5bar. the
A bicycle floor pump has a cylindrical tube with an inside diameter of 1.0 inches. On the pump's upstroke, a diaphragm check valve opens and brings air in at 13.0 psia. The air is then transferred to the tire during the down stroke. The stroke length..
air is considered as an ideal gas. dont use gas table for gas properties just assume that both cv and cp are constants.
the cost per hour of running a ship at a speed of v knots is pound 4 v3 2048. find the speed which makes the cost of
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