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A fan of 45 kg has an unbalance that creates a harmonic force. A spring-damper system is designed to minimize the force transmitted to the base of the fan. A damper is used having a damping ratio of ζ = 0.2.
Calculate the required spring stiffness so that only 10% of the force is transmitted to the ground when the fan is running at 10,000 rpm.
What sort of irradiation and detection sequence would you use if you wanted to base the analysis on potassium?
The available bandwidth in a cluster is 1.25MHz. Find the number of channels per cell for the following systems:
dry air at 32degreec flows over a wetted water plate of 0.2 m2 area. the average convection coefficient is h 20 wm2
1000 ft3min of air at 50 degrees fahrenheit dry-bulb and 95 relative humidity are mixed with 1500 ft3min of air at 76
based on inernal energy considerations what dislocation density in cu is needed to make the crystalline form of cu
A steam powered catapult on an aircraft carrier sends a 60,000-lb aircraft 250 feet, from zero to 180 mph. Assuming that the acceleration is constant, A) determine the time for taxing. B) Determine the acceleration of the aircraft. C) Determine the f..
consider a plane wall 100mm thick and of thermal conductivity 100 w/m .k seady state conditions are known to exist with T1 = 400 k T2= 600 K. determine the heat flux and the temperature gradient off the coordinate systems.
At the inlet to an axial diffuser the velocity of the approaching air is 420 m/s, the stagnation pressure is 300 kPa, and the stagnation temperature is 600 K.
johnson implants is planning a new online patient diagnostics for surgeons while they operate. the new system will cost
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of ammonia initially at 500 kPa with a quality of 98%. Expansion occurs to a state where the pressure is 150 kPa. During the process the pressure and specific volume are related by ..
A rigid 15-L vessel initially contains a mixture of liquid water and vapor at 110 C with 11.2 qualities the mixture is then heated until the temperature is 155 C. Calculate heat transfer
the profitable palmer golf cart corp. is considering investing 300000 in special tools for some of the plastic golf
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