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A beam having a cross section in the form of a channel (see figure) is subjected to a bending moment acting about the z axis
Calculate the thickness t of the channel in order that the bending stresses at the top and bottom of the beam will be in the ratio 7:3, respectively.
In testing the design of the screw-lift jack shown, 12 turns of the handle are required to elevate the lifting pad 1 in. If a force F = 10 lb applied normal to the crank is required to elevate a load L = 2700 lb, determine the efficiency e of the ..
For mass-spring-damper accelerometer, calculate the mass needed to achieve mechanical noise limit a_rms = 1 nG if the mechanical resonance frequency is to be f=100 Hz.
the modulus of elasticity for beryllium oxide beo having 5vol porosity is 310gpa 45 106psi.a compute the modulus of
a fire hose nozzle has a diameter of 1.375 in. according to some fire codes the nozzle must be capable of delivering at
A gas is compressed from a state of 15 lbf(in)^2, 0.5ft^3, to a final state of 60 lbf/(in)^2. The process equation relating P and V is P=aV+b, where a=-150 lbf/ft^3. Evaluate the work, in ft-lbf.
Refrigerant-134a enters an adiabatic compressor as saturated vapor at -24 degrees Celsius and leaves at 0.8 Mpa and 60 degrees Celsius. The mass flow rate of the refrigerant is 1.2 kg/s. Determine (a) the power input to the compressor and (b) the vol..
Carbon dioxide initially at 50 kPa, 400 K, undergoes a process in a closed system until its pressure and temperatures are 2 MPa and 800 K, respectively. Assuming ideal gas behavior, find the entropy change of the carbon dioxide (Cp = 1.054 kJ/kg.K)
consider a coal-fired steam power plant that produces 350 mw of electric power. the power plant operates on a simple
A fluid flow axially in the annular region between two concentric pipes with radii R1 and R2>R1, respectively. Assume the flow is steady, incompressible, axisymmetric, fully-developed, and has no swirl. Also neglect all body forces.
a ships hull is 150m long as has a wetted area of 5000 m2. when it is encrusted with barnacles it requires 7000 hp to
a stationary gas turbine power plant operates on a simple ideal brayton cycle with air as the working fluid. the air
A pump delivers 40 litres/min to a 90 mm bore/30 mm rod cylinder to lift a load of 200 kg. What is the pressure exerted on the piston? What is the speed at which the load will be lifted? How much power is required to lift the load at this speed?
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