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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.
use the principle of angular momentum to eventually derive the moment of inertia integral. for each case find the
The pre- exponential and activation energy for the dif- fusion of Ni in Cu are 2.7 X 10-4 m2/s and 236,000 J/mol, respectively.
milk is to be transported from texas to california for a distance of 2100 km in a 7-m-long 2-m-external-diameter
The heat pump for my house has 4 kW compressor motor. I wish to keep my house at 25 degrees C. My house loses energy to the cold winter night at 20 kW. What is the minimum COP acceptable for my heat pump?
a fluid has a viscosity of x nsm2 and is placed in a concentric cylinder viscometer. the gap width is g mm and the
the disk in a computer hard drive spins at 7200 rpm. at the radius of 30 mm a stream of data is magnetically written on
two tanks a and b are connected by a short section of pipe with a valve that is initially closed. both tanks are
Sketch typical thermal curves and discuss the information that might be obtained and problems that might be anticipated.
a turbine accepts superheated steam at 800 psia and 1200degf and rejects it as saturated vapor at 2 psia. calculate the
A heat engine draws equal amounts of energy from 3 different sources: one at 1000 K, one at 1500 K, and one at 2000 K. The engine rejects heat at a rate of 100 kW to the environment at 300 K. What is the maximum power that the engine can produce?
Write a program that allows the user to enter a number that represent the month of a year (1 to 12) and uses a switch construct to convert the month number to its corresponding number of days, where January is considered the 1st month of a year and D..
Write a program using nested for (or any) loop to create a 3×5 matrix in which the value of each element is its row number to the power of its column number divided by the sum of its row number and column number. For example, the value of element (2,..
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