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A 3000-kg machine tool exhibits a large resonance at 120 Hz. The plant manager attaches an absorber to the machine of 600 kg tuned to 120 Hz.
Calculate the range of frequencies at which the amplitude of the machine vibration is less with the absorber fitted than without the absorber.
You are asked to design a system that will improve the cooling system for microprocessors that resembles the Intel Pentium®4. The Pentium 4 processor is packaged in a Flip-Chip Land Grid Array package that interfaces with the motherboard.
a deep freezer for hazardous chemicals is to be maintained at -20of to insure a safe environment for the chemicals. the
Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.
it is 30degf outside. the temperature of the outside surface of a building is 33degf. the thickness of the building
determine the work done in lifting a 250-lb refrigerator 4 ft vertically into a van. alternatively the refrigerator
the heat-transfer rate to the surroundings from a person at rest is about 100w. supposed the ventilation system fails
Consider a simply supported beam of length 50ft subjected to a uniformly distributed downward load of 10kips/ft from x=10ft to x=40ft and concentrated downward loads of 100kips at x=10ft and x=40ft.
an otto cycle has the lowest temperature of 60degreef and the lowest p as 12psi. the highest temperature is 4040degreef
a storage tank is 40 feet above a river. water is pumped from the river to the storage tank at a rate of 0.095m3s. the
consider a long cylinder of porous material of radius r in which a gas a is being generated throughout the cylinder at
calculate the energy for vacancy formation in al given that the equilibrium number of vacancies at room temperature 25
Calculate the Boundary layer thickness at the trailing edge of the plate and total drag force
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