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A 5-N vertical force is applied to the knob of the window-opener mechanism when the crank BC is horizontal. Determine the moment of the force about point A and about line AB.
The L bracket shown below is pinned to the ground at point C and attached to a single cable at points A and D that wraps around a frictionless pulley at point B. Determine the forces acting on the bracket at point C and then tension in the cable.
what is the standard size of Pcc specimens to be tested for compressive strength? if a smaller size is used, which size is expected to provide higher compressive strength close to that of an actual concrete structure?
A ball is thrown with an upward velocity of 5m/s from the top of a 10-m high building. One second later another ball is thrown vertically from the ground with a velocity of 10m/s. Determine the height from the ground where the two balls pass eachothe..
Concrete pier is loaded on top with a uniformly distributed load of600 lbs per square foot. Investigate the state of stressat a level of 4 ft. above the base.
The uninform 60-lb pole is supported by the horizontal surface at A and by the small frictionless roller at B. If the coefficients of static friction and kinetic friction for end A are 0.35 and 0.25, respectively, determine the friction force whic..
Would you expect to find the Tapeats Sandstone on top of the Great Unconformity in all places in the Grand Canyon? Why, or why not?
A company uses a 50% solution of NaOH to maintain the pH of water circulated in one of its furnace exhaust scrubbers. The cost of the solution is $200 per ton f.o.b. (free-on-board).
The center of gravity G of the 20-in. club is located 12 in. from the knob. knowing that at the instant, G has a velocity of 4 ft/s upwards and the club has an angular velocity of 30 rad/s counterclockwise
Water at 50 C flows in a 150-mm diameter pipe with a velocity of 7.5 m/s. Measurements of head loss through the pipe indicate that f=0.020. Determine the value of e. Find the shear stress at the pipe wall and at r=30 mm. What is the value of du/dy at..
Determine the number of completely mixed chlorine contact chambers each having a detention time of 30 min that would be required in a series arrangement to reduce the bacterial count of a treated effluent form 10^6 to 14.5 organisms/mL if the first o..
What is the rated flywheel power for a CAT 834H 4 wheel tractor equiped with converter drive? What are the maximum speeds, for this machine in each of the four forward gears?
As more complete mixed reactors in series are provided, the system becomes more plug flow. For a substance that decays according to first-order kinetics
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