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You are the operator of a 15,000 V rms, 60 Hz electrical sub-statin. When you get to work one day, you see that the station is delivering 6.0 MW of power with a power factor of .90. What is the rms current leaving the station? how much series capacitance should you add to bring the power factor up to 1.0? how much power will the station then be delivering?
q1. before starting this problem review conceptual. the force vector a has the magnitude of 75.0 newtons n and points
A screen is placed exactly one meter away from an illuminated test pattern. A lens placed between them forms a clear (focused) image of the pattern on the screen when the center of the lens is 250 mm from the test pattern. What is the focal length of..
A stone is projected at a cliff of height h with an initial speed of 45.0 m/s directed at an angle θ0 = 66.0° above the horizontal. The stone strikes at A, 5.37 s after launching. Find out (a) height h of the cliff, (b) speed of the stone just before..
The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.209 m and mass 5.65 kg, and two thin crossed rods of mass 9.95 kg each. what should the radius of the disk be
A 4,000-kg satellite is traveling in a circular orbit 200 km above the surface of the Earth. What is the force of gravity on the marble as viewed by the observers on the Earth
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine .
How various kilograms of nitrogen are boiled away in time of 7.50 h. car that hits a line of water barrels and takes 1.8s to stop.
For a step-down transformer, the input voltage is 120V (rms) and output is to be 6v (rms). What should be the number of turns on the secondary side of the transformer, if the number of turns on the primary side is 200
Suppose a 32.3 V battery is connected to a long cylindrical wire, and a current of 2.44 A flows. Find the work done by this battery to push one electron through the entire length of the wire
A simple pendulum consists of a ball connected to one end of a thin brass wire. Determine the change in the period of the heated pendulum
A hiker's trip consists of three segments. Path A is 7.00 km long heading 60.00 degrees north of east. Path B is 6.00 km long in the direction due east. Path C is 5.00 km long heading 315 degrees counter clockwise from east. Graphically add hiker's d..
A velodrome track is banked so that a bicycle traveling at 43.5 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 59.0 m
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