You and your roommate are headed to Cancun for spring break. Your roommate, who has had only high school physics, has read that an emf can be induced in the wings of an airplane and wonders whether this would give enough voltage to power a portable music player. What’s your answer? (Assume that the wingspan of your 747 is 60 m, the plane is flying at 600 mph, and Earth’s magnetic field is 0.3 G.)