Calculate the area swept out each second by the tether attached to the satellite assuming that the tether is 20km long.
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Card 27
Front
Assuming that the Earth's magnetic field strength at this orbit is approximately 20 x 10^-6 Tesla, use Faraday's law to show that the voltage generated in the tether is approximately 3 kV.
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Card 28
Front
Give reasons why the voltage will vary during one orbit of the satellite.
