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A W6×12 is strengthened with a 3 4 -in -by- 3 4 -in. bar welded to its top flange as shown. Because of the weld used, the horizontal shear stress at the connection between the bar and the flange cannot exceed 4.0 ksi.
In the web, the shear stress is limited to 20 ksi. Use the general shear formula to determine the allowable vertical shear force on this cross section.
package is dropped from the plane which is flying with a constant horizontal velocity of vA = 150 ft/s at a height h = 1500 ft. Determine the radius of curvature of the path of the package just after it is released from plane at A.
A gas within a piston-cylinder assembly executes a Carnot power cycle during which the isothermal expansion occurs at TH = 600 K and the isothermal compression occurs at TC = 300 K.
an industrial process requires that a liquid be stirred. an electric motor is used to drive the stirring device. the
determine (a) the compression ratio, (b) the cycle efficiency, (c) exhaust temperature, and (d) mean effective pressure (kPa). Draw (e) a P-v diagram and (f) a T-s diagram
(a) Estimate the surface temperature of the fourth device located 15 mm from the leading edge of the board. (b) Generate a plot of the surface temperature of the first four devices as a function of the free stream velocity for 5 uoo 15 m/s.
Explain why and how each of these factors is an important consideration
A 1m3 rocket propellant chamber is filled with combustion gases at 3000 K and 7 Mpa at the instant combustion ceases. The throat area of the nozzle is 0.1m2. Estimate the time it takes for the chamber pressure to drop to 0.7 MPa. Assume that the inst..
The probability that the 1s electron in the hydrogen atom is found in the tunneling (classically forbidden) region. The probability that the 1s electron in the Ne+9 is found in the tunneling region. By this measure, is a 1s electron in Ne+9 more or l..
earth is required to be excavated from borrow pits for building an embankment. the wet unit weight of undisturbed soil
A feed water heater in a power plant has two inflows: 0.5 kg/s steam at 320°C and 7 bar and 4.5 kg/s liquid water at 35°C and 7 bar. A single flow exits the feed water heater. Assuming no heat transfer with the surroundings and constant pressure fo..
find an expression for rate of heat loss as a function of the other three parameters in the problem. (b) If the temperature difference ? T doubles, by what factor does the rate of heat loss increase?
a company is interested in hiring you to build something for their use. they want to make a cyclotron that will
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