Linus Pauling
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1. How fast would you have to drive your car to create a 3.0 V motional emf along your 1.2 m-long radio antenna? Assume that the motion of the antenna is perpendicular to B.
2. d(phi)/dt = EMF
dphi = B*A
v = dx/dt
3. I'm really not sure here. I think the length of the antenna will be dx, but I don't see how I'd get dt so solve for velocity. In a previous problem, worked out a minimum speed needed to create an EMF by using dphi = B*A = EMF*dt. But here I don't know B or A...
2. d(phi)/dt = EMF
dphi = B*A
v = dx/dt
3. I'm really not sure here. I think the length of the antenna will be dx, but I don't see how I'd get dt so solve for velocity. In a previous problem, worked out a minimum speed needed to create an EMF by using dphi = B*A = EMF*dt. But here I don't know B or A...