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Estimate the torque required at the base of a flag pole to hold it in place in a 30mph wind. Assume the flag pole is a vertical cylinder with D=10cm and L=10m, and assume the wind drag force is uniform along the pole. ( if needed, use air density(p)=1.2kg/m^3, µ=1.8*10^(-5)Pa*sec; water properties:p=10^3 kg/m^3, µ=10^(-3)Pa*sec)
Design a flat roof meeting certain mechanical performance criteria. The basic structure of the roof is a series of rectangular-section 'joists', made from softwood, that span the space to be covered by the roof.
How many kilograms each of pearlite and the proeutectoid phase form? Schematically sketch and label the resulting microstructure.
What is the wear coefficient of the bearing material in m2N-1 ?
Evaluate the maximum theoretical power that can be developed by the turbine, in kW, and the corresponding exit temperature.
Entropy Generation in a Steam Turbine, Steam at a rate of 15lbm/s enters a turbine at 500 Psia, 800f and exits at 5 Psia. For a reversible, adiabatic process (iseentropic)
Block B of the mechanism is confined to move within the slot member CD. If AB is rotating at a constant rate of AB = 3rad/s, determine the angular velocity and angular acceleration of member CD at the instant shown.
the 1-Mg forklift is used to raise the 750-kg crate with acceleration of 2 m/s. deterimine reaction exerted by the groung on the airs of wheel at A and B.
Calculate the net cycle work in kJ assuming air is an ideal gas with constant specific heats.
A small hydroelectric power plant produces electrical power at a rate of 30 kW. The plant utilizes a stream of water that drops 40 m from a lake to the turbine and flows at a rate of 100 kg/s. What is the efficiency of the turbine-generator?
Determine (a) the exit temperature, (b) the exit relative humidity of the air, (c) the exit velocity.
What is the difference between corrosion and stress corrosion cracking of pipelines? Which of them is more dangerous and why?
Derive eulers equation 1- Derive. From first principles eulers equation from the rate of change of momentum 2- Show by integration how Eulers equation derives Bernoullis equation
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