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A simple undamped spring-mass system is set into motion from rest by giving it an initial velocity of 100 mm/s. It oscillates with a maximum amplitude of 10 mm. What is its natural frequency?
A mass of 1.5 kg of air at 120 kpa and 24 degrees C is contained in a gas-tight, frictionless piston-cylinder device. The air is now compressed to a final pressure of 600 kPa. During the process, heat is transferred from the air such that the tempera..
a flow of 30.5 kgmin of water from a hot water tank at 51oc is mixed with a 29.1 kgmin flow of 20oc water. determine
Deterine the approximate values of bar force in the members of the truss - Diagonal bars are slender and can carry only tension.
five kilograms of water are contained in a closed rigid tank at an initial pressure of 20 bar and a quality of 50. heat
air enters a compressor at 300 k and 100 kpa at a volumetric flow rate of 4 m3s. the air is compressed such that the
an office is occupied by 30 persons who each produce 200 btuh 58w of sensible heat and 0.25 lbh 0.1kgh of moisture. the
an otto cycle uses air as the working fluid its state at the beginning of the compression is 14 psia and 60 degrees f
What is the primary difference between the strength of a structure and the strength of a material? Is a strong material stiff?
Consider conditions for which there is a uniform heat transfer rate per unit length, qi'= 1.25 X 105 W/m, from the exhaust gases to the pipe inner surface, while air flows through the annular passage at a rate of m· a = 2.1 kg/s.
Derive a general expression that relates the ratio of the accelerating voltages to the ratio of the corresponding m/z values.
a refridgerator should remove 500 kj from some food. assume the regriderator works in a carnot cycle between -10 and 45
two blocks a and b of mass 8 kg and 12 kg respectively hang from a cable which passes over a pulley of negligible mass.
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