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A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). The transformer is to deliver1100kW to the factory at84%efficiency. Find values for the following.
(a) the power delivered to the primary
kW
(b) the current in the primary
A
(c) the current in the secondary
Imagine a frictionless pulley (a solid cylinder) of unknown mass M and radius r = 0.200 m which is used to draw water from a well. A bucket of mass m = 1.50 kg is attached to a massless cord wrapped around pulley. The bucket starts from rest at th..
A 69.0 kg person throws a 0.0400 kg snowball forward with a ground speed of 35.0 m/s. What are the velocities of the two people after the snowball is exchanged
A negative lens has a focal length of -10 cm. An object is located 20 cm from the lens. determine How far from the lens is the image
Blood Speed in an Arteriole A typical arteriole has a diameter of 0.030 MM and carries blood at the rate of 5.5 x 10^-6 cm^3/s. What is the speed of the blood in an arteriole
A bungee jumping mime is attached to a bungee cord 25.0 m long. The mime is in freefall until he gets to the end of the bungee, Find the maximum speed attained by the mime
One possibility for a low-pollution automobile is for it to use energy stored in a heavy rotating flywheel. What is the angular velocity of the flywheel when it has a full "energy charge"
a mass at the origin is pulled by four perpendicular ropes, with a force of 10N in the direction of the positive y axis, 8N to the positive x axis, What is the angle at which the force is acting
A 1.42 103-kg car traveling initially with a speed of 20.0 m/s in an easterly direction crashes into the rear end of a 9.00 103-kg truck moving in the same direction at 14.0 m/s. What is the velocity of the truck right after the collision
A 20 g plastic ball is moving to the left at 35 m/s. How much work must be done on the ball to cause it to move to the right at 35 m/s
A current of 6.0 A is drawn from the battery in the figure shown below. How much is the voltage of the battery Vab in V
A certain superconducting magnet in the form of a solenoid of length 0.30 m can produce a magnetic field of 13.0 T in its core when its coils carry a current of 105 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find o..
A circular curve of highway is designed for traffic moving at 55 km/h. If the radius of the curve is 120 m, what is the correct angle of banking of the road
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