A 15-g 10-cm-long wire is suspended horizontally between the poles of a horseshoe magnet. The magnetic field is horizontal between the poles of the magnet where the wire is suspended. When the 0.50-A current in the wire is turned on, the wire jumps up and out of the magnet. Draw the situation, carefully indicating the direction of the current and the field. What is the minimum magnetic field created by the horseshoe magnet?
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At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.
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Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?
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A 15-g 10-cm-long wire is suspended horizontally between the poles of a horseshoe magnet. The magnet...
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