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A variable-speed electric motor, having an unbalance, is mounted on an isolator. As the speed of the motor is increased from zero, the amplitudes of vibration of the motor are observed to be 0.55 in. at resonance and 0.15 in. beyond resonance. Find the damping ratio of the isolator.
an un-stretched spring initially is attached to a horizontal piston round shape. heat is added to the gas until the
given a tank with 60 cm of crude oil sg0.86 on top of 200 cm of water both at 50 degrees c. barometric atomospheric
it has been shown that the cop for a carnot refrigerator. is greater than the cop for a real refrigerator . show the
steam enters a turbine operating at steady state at a pressure of 1000 lbfin2 and a temperature of 1100degf and exits
a 1.5 inch thick steel plate and a 0.5 inch thick cast iron plate are compressed with 14- 20 unc grade 5 bolt and
One 110kg foot ball lineman is running in the direction of x-ax is at 2.75 mis while another 125 kg lineman is running directly toward him at 2.60 mis. What are the magnitude and direction of the net momentum of these two athletes and their total ..
Determine the maximum theoretical rate of heating provided by a heat pump, in kW per kW of power input, in each of two cases: The role of the cold reservoir is played by (a) the atmosphere at 2208C, (b) ocean water at 58C.
An automobile engine has a thermal efficiency of 18 percent.The temperature of the fuel is 950 C , and the surrounding air is at 25 oC.Does the operation of this engine violates the second law of thermodynamics?
a particle is moving along a straight line with the acceleration a12t-3t12 fts2 where t is in seconds. determine the
1 water at 60 of is flowing in a 6-in schedule 40 steel pipe that is 100 ft long. calculate the maximum allowable
a storage tank consists of a cylindrical section that has a length and inner diameter of l2 m and di1 m respectively
a hardening spring applies a non constant force f .12x 10x2 lb to block a. a 4.8 lb b 23 lb and b is 18 inches
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