A Boeing 777 is flying due north at \( v=900km/h\) (typical cruising speed) and at an altitude where the vertical component of the Earth's magnetic field is \(B=50\mu T\). The wingspan of the 777 is about 60m. Determine the induced voltage **in Volts** across the tips of the wings.

**Details and assumptions**

- Although wings have a complicated shape as in the figure, for the purposes of this problem you may model the wings as a straight conducting rod of length \(L=60m \) if you wish.

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