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If the box weighs 200 lbs, what force must be in each cord for the system to be in equilibrium? Cable AB is 1.5m and the vertical distance from B to A (marked as "y") is 0.75m
a reversible heat pump cycle operates between hot and cold reservoirs at th 27degc and tc -3degc respectively.
gold foil is 0.08 mm thick and 670mm2 in area. a it is cubic with a0.4076nm. how many unit cells are there in the foil?
a fossil-fuel steam power plant operates at about 50 of carnot thermal efficiency. it has been suggested that the air
magneto is seeking to produce a new helmet using a deep drawing process in which a sheet of 3103 aluminum will be
If an elevator starting from rest accelerates at 10m/s and then decelerates at -1m/s until it reaches the top floor (ignore gravitational acceleration, assume g=0. Plot the corresponding a-t, v-t and s-t graphs.
A MASS of gas at an inital pressure of 28 bar and with internal energy of 1500kj,is
air is compressed in a steady-flow compressor via a polytropic process from 15 psia and 60ordmf state 1 to 75 psia and
1.8 ft3lb of ammonia at 130f is a two-phase liquid-vapor mixture. determine the quality of a two-phase liquid mixture
a piston-cylinder device with a set of stops on the top initially contains 3 kg of air at 200 kpa and 27 degrees
assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room
a disk has a mass of 4kg and a radius of 90mm, it is at rest when it is placed in contact with the belt, which moves with a constat speed (v =15m/s). knowing that friction is .25 between the disk and the belt. Determine the number of revolution by..
draw the shear and bending moment diagrams for the beam and loading shown and determine the maximum normal stress due
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