A helicopter (Fig. P31.21) has blades of length 3.00 m,
Chapter 31, Problem 21(choose chapter or problem)
A helicopter (Fig. P31.21) has blades of length 3.00 m, extending out from a central hub and rotating at 2.00 rev/s. If the vertical component of the Earths magnetic field is 50.0 mT, what is the emf induced between the blade tip and the center hub?
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