A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage to 405 kV. The secondary of this transformer is being replaced so that its output can be 510 kV for more efficient cross-country transmission on upgraded transmission lines.

(a) What is the ratio of turns in the new secondary to turns in the old secondary?
(b) What is the ratio of new current output to old output (at 425 kV) for the same power?
(c) If the upgraded transmission lines have the same resistance, what is the ratio of new line power loss to old?

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explanation:

wind is defined by the direction it blows from.   for example, a wind blowing from north to south is called a northerly wind.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

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.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.