A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is help with its north pole downward, vertically above the center f the coil. The magnet is released from rest and falls toward th coil. As viewed from above, you can say that, as it falls, the magnet induces a counterclockwise current in the loop. That‘s the answer but why does it exhibit a counter clockwise currentAlpha particles (charge +2e ,mass 6.68*10^-27kg) are accelerated in a cyclotronn to a finalorbitt radius of .40m. The magneticfieldl in the cyclotron is .90 T. the magneticc fluenducedud by the final orbit is closest to (Answer is .59). How did they come up with this?A .25-H inductor and a 16-uF compactor are connected in parallel across an arc source. the rms voltage of the source is 40V, nd the angular frequency is 400 rad/s. The resistance of circuitrcutnegligibleable. impedanceence of circuitrcut ot closest to? Answer 300(omega sign) please expalin
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The lever, the pulley, and the susceptible airplane (once you're going up or down a hill). by making use of the way, this question sounds greater like a try of the answerers than it fairly is a quest for understanding.
a changing magnetic field will induce a current that opposes that change. the falling magnet will cause an increasing downward pointing magnetic field, so the current induced in the wire will produce an upward pointing magnetic field. using the right hand rule, this current is counterclockwise. the force needed to keep something in a circular orbit is m*(v^2)/r the force from a magnetic field is q*v*B (if the velocity is perpendicular to the magnetic (B) field). set them equal and solve for what you need.
