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A pair of power transmission lines each have a 0.800 ? resistance and carry 694 A over 9.14 km. If the rms input voltage is 38.1 kV.
PART A Calculate the power loss in the lines.
PART B Calculate the power output.
If the angle between wires supporting the street lamp is reduced to 110°, what is the tension in each wire.
A stone is dropped into a well. The sound of the splash is heard 2.30 s later. What is the depth of the well
A lead ball is dropped into a lake from a diving board 5.6 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 5 after it is released..
A particular guitar string is supposed to vibrate at 214 Hz, but it is measured to actually vibrate at 272 Hz. By what percentage must the tension in string be changed to get the frequency to the accurate value.
A uniformly charged thin ring has radius 14.5cm and total charge 20.0nC, Find the speed of the electron when it reaches the center of the ring
a projectile is fired with an initial speed of 64.8m/s at an angle of 44.3 degrees above th horizontal on a long flat firing range. determine the direction of the projectile
An adult exerts a horizontal force on a sewing that is suspended by a rope of length L, holding it at an angle x with the vertical. The child in the swing has a weight W and dimensions that are negligible compared to L.
Three charges, +q, +2q, and +4q, are linked by strings (Assume that the middle charge is fixed in space and the other 2 charges are held there by the tension alone.)
The spacecraft's mass is 291 kg and the thrust (force) of the rocket engines is 59 N. If the speed of the spacecraft should be decreased by 128 m/s, how long the engines should be fired. (Ignore the change in mass as a result of the rocket engines..
A 2.45m long copper wire has 1.35V across its ends. Find the electric field strength within the wire
A 1232.0 g mass is on a horizontal surface with ?k = 0.33, and is in contact with a massless spring with a force constant of 652.0 N/m which is compressed. What is the velocity of the mass as it loses contact with the spring
Water (viscosity = 1centipoise) flows through a cylindrical plug in a laboratory experiment. what is the permeability of the sample in cm^(2)
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