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An old wooden telephone pole with a single cross member was blown off center during a recent storm. To temporarily stabilize the telephone pole, a repair crew has attached a cable from the end of the cross member to an eye-ring stake anchored in the ground. (Part C figure) If the origin O of a coordinate system is placed where the pole meets the ground, the point where the cross member is attached to the pole is A(-1.50,1.90,24.8)ft and the point where the cable is attached to the end of the cross member is B(-1.50,-3.10,27.8)ft. The cable's direction is {1.00{i}-1.00{j}-1.00{k}} and it has a tension of 185lb. What is M_a, the moment that tends to twist the telephone pole due to the tension in the cable applied at point B?
The acceleration of a particle is defined by the relation a=-8m/s^2. Knowing that x=20m when t=4s and that x=4m when v=16m/s, determine (a) the time when the velocity is zero
Air can be assumed as a di-atomic ideal gas. Find the final temperature and the amount of work ( in kW) required for air compression at a rate of 100 mol/s , from an initial condition of 1 bar an 25 C to 10 bar; for the following ways:
The blade height is 1.0 m, and the inlet radius of the rotor is 7.0 m. The flow exits the turbine in a radial direction. (a) If the angle between the radial direction and the absolute velocity at the inlet is 30o
On a shovel/truck operation the production of the shovel is 293 BCY/h and a job efficiency of 0.75. The trucks used have a capacity of 12 BCY and have a cycle time of 45 min.(excluding loading).
If a tractor with 23-hp, a max speed of 3.6 mph in 1st gear and an effieiciency of 92% is operated operated down a 4% slope and the rolling resistance is 80 lb/ton, what is the maximum external pull in each of the 4 gears.
A water treatment plant treats a continuous flow rate of 50,000 m^3/day and plans to build a 10,000 m^3 tank to house an additional treatment process. What will be the steady-state effluent concentration of an ideal CSTR
bernard is a principal in a consulting engineering firm. he is also a principal owner in a construction contracting
The concentration of carbon in an iron-carbon alloy is 0.15 wt%. What is the concentration in kilograms of carbon per cubic meter of alloy?
Determine the carburizing time necessary to achieve a carbon concentration of 0.35 wt% at a position 2 mm into an iron–carbon alloy that initially contains 0.10 wt% C
Given a mean earth radius of 20,906,000 ft, and an observation latitude of N 33 degrees, what is the arc distance of one second of longitude and one second of latitude?
Given: acceration = -k*sqrt(v) and k is a cosntant when x=0, v=81 m/s, t=0 when x=18 m, v=436 m/s determine: a) velocity of particle when x=20 m b) the time required for the particle to come to rest
A sprinkler system uses an outdoor reservoir at El 50. A fire pump moves Q = 3 ft^3/sec through a 1.0' dia pipe 300' long to an 8" dia main at El 200. To distribute water to sprinklers, a pressure head at the pipe junction hp =100' is required.
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