one of the space shuttle missions attempted to perform an experiment in orbit us

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one of the space shuttle missions attempted to perform an experiment in orbit using a tethered satellite. The satellite was to be released and allowed to rise to a height of 20 km above the shuttle. The tether was a 20km copper-core wire, thin and light, but extremely strong. The shuttle was in an orbit with a speed 7,600m/s, which carried it through a region where the magnetic field of the Earth had a magnitude 3.3 Times 105 T. For your calculations, assume that the experiment was completed successfully, that the wire is perpendicular to the magnetic field, and that the field is uniform. An emf is generated in the tether. Which end of the tether is negative? Calculate the magnitude of the emf generated. To complete the circuit, electrons are sprayed from the object at the negative end of the tether into the ionosphere and other electrons come from the ionosphere to the object at the positive end. If the resistance of the entire circuit is about 10,000 ohms, calculate the current that flows in the tether. A magnetic force acts on the wire as soon as the current begins to flow. Calculate the magnitude of the force. State the direction of the force. By how much would the shuttle's orbital energy change if the current remains constant at the value in b) for a period of 7 days in orbit?

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