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Suppose the light bulb in the figure below is replaced with a short wire of zero resistance, and the resistance of the rails is negligible. The only resistance is from the moving rod, which is The rod has a cross-sectional area of m2 and moves with a speed of m/s. The magnetic field has a magnitude of T. What is the current in the rod?
A flat circular coil with 110 turns, a radius of 4.10 × 10-2 m, and a resistance of 0.500 ? is exposed to an external magnetic field that is directed perpendicular to the plane of the coil, Find the induced current in the coil
An outfielder throws a 0.150-kg baseball at a speed of 22.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
At a certain distance from a charged particle, the magnitude of the electric field is 546 V/m and the electric potential is -2.60 kV, What is the distance to the particle
You have two 120V light bulbs, one 25W and one 100W, that are normally connected in parallel with 120V across each. explain Which one burned out and why
Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). how much kinetic energy does the ball have
A 74.9-kg skier rides a 3180-m-long lift to the top of a mountain. The lift makes an angle of 17.0 ° with the horizontal
A hill that has a 15.8 % grade is one that rises 15.8 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal
A river with long, straight, parallel sides 10 km a part flows from north to south at 3 m/s. How far downstream is the swimmer when he reaches the opposite shore
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
A toy car of mass 1.0 kg is stationary, and a child rolls a toy truck of mass 4.7 kg straight toward it with a speed of 3.2 m/s. What is the velocity of the center of mass of the system consisting of the two toys
TV-reception antennas for VHF (channels 2 through 13) are constructed with cross wires supported at their centers, What is the frequency for channel 4
If a compressive force of 3.2×104N is exerted on the end of a 18cm long bone of cross-sectional area 4.3cm2 , will the bone break, By how much does it shorten
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