Astraight 2.00 m, 154 gram wire carries a current in a region where the earth's magnetic field is horizontal with a magnitude of 0.550 guass.(a) what is the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it? i(min) = a(b) does the current's value found in part (a) seem likely that such a wire could support this size of current? (c) show how the wire would have to be oriented relative to the earth's field to be supported in this way?

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

pe = weightxheight = 2000x1000=2,000,000joules

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.