Consider a futuristic space probe, whichis in orbit around a distant planet which has a mass that is 1.5times that of earth. As part of it's mission, this probeestablishes a circular orbit 40,000 km above the center of theplanet and unwinds a 4 km tether. If the magnetic field of thisplanet has a strength of 1x10-3 T, and the field is at aright angle to the tether, what is the absolute value of the induced emf (|ε|).