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Design a minimum-weight, hollow circular steel column for the water tank shown in Fig. 3.72. The weight of the tank (W) is 100,000 lb and the height is 50 ft. The stress induced in the column should not exceed the yield strength of the material, which is 30,000 psi, when subjected to a harmonic ground acceleration (due to an earthquake) of amplitude 0.5 g and frequency 15 Hz. In addition, the natural frequency of the water tank should be greater than 15 Hz. Assume a damping ratio of 0.15 for the column.
a steel bearing is known to have a true diameter of 0.4982 in. in the laboratory you use a micrometer that is supposed
a frictionless piston-cylinder device contains 16 lbm of superheated water vapor at 40psia and 600 degrees fahrenheit.
As shown in the sketch, water flows at 2550 kg/s from a very large reservoir through a penstock (pipe) to a hydro turbine. The water exits the turbine through a 0.5 m diameter pipe. The reservoir surface is 30m above the location where the water exit..
What is the total kinetic energy of the system just afterthe bug leaps?
A heat pump with a coefficient of performance of 3.8 provides energy at an average rate of 75,000 kJ/h to maintain a building at 21oC on a day when the outside temperature is 0oC. If electricity costs 8 cents per kW. h. Determine the electric power r..
a hydraulic jump at the base of a spillway of a dam is such that the depths upstream and downstream of the jump are
what is the sine wave generated by a phasor of length 9, rotating with an angular velocity of 325 rad/s; and with the phase angle of 0."
an air-hockey puck has a mass of 0.01 kg and a diameter of 90 mm. when it is placed on the air table an air film of
predict the boiling heat-transfer coefficient for water under pressure boiling at 250 degrees f for a horizontal
a block of mass 10 kg and measuring 250 mm on each edge is pulled up an inclined surface on which there is a film of
Ideally this is a brief title describing the main project theme. e.g. Design of a Domestic Security System. Name and Programme of Study Clearly identify your name, the programme of study. Aims of the Project Between 3 and 6 aims (more does n..
concrete has a density of 2400 kgm3 and a compressive strength of 30 mpa. what is the maximum height if a column if
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