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Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.091 m, 120 turns, and carries a current of 3.3 A. The second coil has 170 turns and carries a current of 9.1 A. What is the radius of the second coil?
A 25-kg child is sitting on the seat of a swing 10 m long. Her father pulls the swing back until the swing makes an angle of 37 degrees with the vertical. The gain in potential energy of the child at this point is?
What is the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic fields
A solenoid is 8.93 cm long, 1.56 cm in diameter, and has 310 turns. find the magnetic flux through one turn of the solenoid
In a common but dangerous prank, a chair is pulled away as a person is moving downward to sit on it, causing the victim to land hard on the floor.
Two identical wheels are moving on horizontal surfaces. The center of mass of each has the same linear speed. However, one wheel is rolling, What is the total kinetic energy of each wheel
Rusting of an iron nail is an example of a change of phase, true or false? This seems like a tricky question, because it is a chemical change-but would that be considered a change of phase?
A person running a fever has a body temperature of 39.4 degrees C What is the person's temperature on the Fahrenheit scale
A hydraulic lift is used to jack a 1170 kg car 14 cm offthe floor. The diameter of the output piston is 18 cm, and theinput force is 250 N. What is the area of the input piston
A 2.25×10^4 elevator is to be accelerated upward by connecting it to a counterweight using a light (but strong!) cable passing over a solid uniform disk-shaped pulley. There is no appreciable friction at the axle of the pulley, other than its mass..
A child rides a toboggan down a hill that descends at an angle of 18.6? to the horizontal. The hill is 37.6 m long. find the vertical component of the child's displacement
A converging lens produces a real image magnified 3 times that of an object. If the object is placed at 15 cm from the lens, calculate the focal length of the converging lens
A circular coil, with radius of 10 cm, and 25 turns, rotates in a constant magnetic field of strength 2.4 T, If the magnetic field that the coil is in points down the page, which direction does the coil rotate
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