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Determine the force P required to move the wedge under the post. The coefficient of static friction between all surfaces is 0.25. The applied force F is 200 lbs and the angle alpha is 15 degrees. Neglect the size and weight of the wedge and wood framing members.
A power plant operates at steady-state. It receives energy from a hot source (combustion of fuel) at a temperature of 420 oC. The plant discharges this energy to a nearby river that acts as a cold source.
What is the bulk modulus of a liquid that has a density increase of 0.02 percent for a pressure increase of 1000 lb/ft^2
The "Shape Factor" of a cross-section of a beam is defined as the fully plastic strength divided by the force or moment causing first yield. Thus the Shape Factor for bending is Mp/My and similarly for shear, is Vp/Vy.
Energy transfer in mechanical systems, A wheel is 800mm in diamiter and has a mass of 1000kg. on a horizontal surface without skidding, the vehicle accelerates uniformly at 0.5m/s^2 for 5 seconds.
A Pelton wheel located at an elevation of 200.0 m is sued to extract power from a reservoir at an elevation of 800.0 m. A penstock 1500 m long and 0.8 m in diameter connects the reservoir and nozzle of the Pelton wheel.
Atrazine is adsorbed to a soil that is only saturated by 5%(i.e. only a twentieth of the pore volume is filled with water), how much atrazine is bound to the soil, dissolved in the water, and present as vapor in the gas phase
A pipe is to be installed under the ground on a bed of aggregate 6 in. thick. The entire weight on the aggregate from pipe and soil above the pipe is 1800 lbs. per linear foot of pipe. What is the pressure on the soil if theta is 45 degrees
A discharge of 2,200 ft^3/sec flows in a trapezoidal channel at a normal depth of 8.0 ft. The channel has a slope of 0.01, a 12-ft bottom width, and side slopes of 1:1 (H:V). Determine the manning coefficient of channel roughness
A drilling engineer wishes to support pipes of length L on blocks so that the magnitude of the bending moment in the pipes directly over the supports is equal to the magnitude of the bending moment at the center of the pipes.
A balloon is being inflated at the rate of 15m^3/min. At what rate is the diameter increasing after 5 min? Assume that the diameter is zero at time zero.
given moisture contents of 5%, 9%, 14%, 22% and 25% with corresponding weights of 3.1, 3.42, 3.78,3.85, 3.77 lbs. of the compacted soil. (specific gravity =2.7)(compaction test using compaction mold of 1/30 ft^3).
A solid steel shaft with an outside diameter of 65 mm is subjected to a pure torque of 7,000 N-m. The shear modulus of the steel is G=80 GPa. Determine a. 1 The maximum shear stress in the shaft
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