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A spring-mass is excited by a force F= sin(wt) . At resonance, the amplitude is measured to be 0.8 cm. At 0.85 resonant frequency, the amplitude is measured to be 0.6 cm. Determine the damping factor (zeta) of the system.
a weightless box with a 0.4m by 0.4m square base is floating horizontally on the water surface. it contains a 0.2m
a dishwasher circulates water at a rate of 55 gpm with a small pump. the total head ppg v22g leaving the pump is
air at 100 kpa and 27degc enters an isentropic compressor at a rate of 100 ls and leaves at 1000 kpa. determine the
a regenerative steam cycle operates between the limits of 80 bar 540oc and 0.05 bar. if only one extraction from the
a steel beam of total length 3m is simply supported at the ends by pin-jointed supports a and c. a diagrammatic
Calculate the change in free-energy associated with the formation of a critical spherical nucleus in pure liquid nickel that is 200 ºC under cooled. Properties of Nickel: Heat of Fusion 2660 J/cm3; Surface Energy 255x10-7 J/cm2 ; Freezing Temperatur..
a timber beam is to be selected to sustain a maximum transverse shear of vmax 50 kn without exceeding an allowable
Obtain the differential equation and the boundary and initial conditions that could be solved to determine the tem- perature as a function of position and time in the bar.
determine the temperatures of surface 1 through 4 of the furnace cavity of example 13.3 if the entire furnace
the environment in a certain area is 15 degrees c. plot the maximum efficiency of a nuclear power plant as a function
12. 3 kg of refrigerant 22 undergoes a process for which the pressure-specific volume relation is pv^-0.8 = constant. The initial state of the refrigerant is 12 bar and 60 degrees C. The final pressure is 8 bar. Kinetic and potential energy effects a..
Explain whether the following situations and should be modeled as closed systems, control volume systems, or transient systems. Convert the following temperatures to °F, °C, K, R (4 pts) a. 98.6 °F b. 298 K c. 5715 °F e. 100 °C. Convert the following..
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