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physics question about sheet of copper?

if you had a sheet of copper in a strong permanent magnet, with the plane of the sheet perpendicular to the magnetic field, and quickly jerk it out,a. you will feel no magnetic forceb. any force you feel will be due mainly to iron impurities in the copper itself is not magneticc. you will experience a magnetic force opposing your action d. you will experience a magnetic force assisting your actione. none of these

Answer:

Dude, if you're a new rider, take it easy until the bike becomes an extension of your brain and body. The majority of MC accidents happen to new riders. Fast takeoffs are a combination of throttle and clutch control. I suggest you practice away from traffic until you get the feel for how much throttle vs. how much slip is required to take off the way you want without flipping the bike in an unintentional wheelie.
motorcycle lesson 101. my tip simple and easy,,, start the bike 1 pull in the clutch 2 release the clutch slowly, no gas keep releasing until you stall the motor (you say you do this 60% of the time any way) now you should no where that point is that where your motor stalls, this where you gradually increase your throttle so as not to stall, you cant say you are doing good in shifting when you cant even take off, that is like saying i don't know how to start the car but i know how to shut it off, or the worst one,,, i can take it apart, but i don't know how to put it back together. you have got to feel that part when the motor needs more gas so it wont stall, what the heck they train circus bears and monkeys to ride motorcycle why not you??!? it really is not that difficultt!!! DO IT DO IT RIGHT!!!
C. It's called magnetic or eddy-current damping, and the force is proportional to the speed of plate movement, the conductivity of the copper, the square of the magnetic field strength and the volume of copper in the field. Basically you can think of the copper plate as a series of short-circuited coils which generate circulating currents which in turn generate magnetic fields opposing the motion, not unlike a shorted generator. Since the current increases as the conductivity of the plate does, it's especially noticeable with thick plates of copper and aluminum. (You don't want magnetic materials like iron because the magnetic force will interfere with isolating and feeling the damping force.) When damping force is proportional to velocity it's often called viscous damping, which is just how it feels, like the plate is immersed in honey.
The only safe way to proceed is to get some proper training! You have identified stalling while attempting to move off from a stop as a problem. What other other issues do have which you have not identified? And will any of those issues get you killed on public roads? It'd what you don't know that can get you into trouble, and we can't solve that on Y!A. Proper training involves feedback: The instructors observe your riding, identify faults, and create solutions. They instill good riding techniques and habits. Note to other answerers: Are YOU willing to assume responsibility for teaching someone to ride on the Internet? How about hang-gliding? Piloting a plane? Brain surgery?

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