Induclion flashlights have a hollow clear plastic Lube containing a coil of wire in the middle, a moveable magnet, and fixed repulsor magnets at the two ends. When you shake the flashlight, the magnet goes back and forth through the coil, generating electrical energy, which is then stored in a capacitor and later used to light the LED. How much electrical energy can you generate by shaking the flashlight?
Heavy things sometimes fall from the sky, including meteorites, satellites, and bullets from celebratory or antiaircraft gunfire. What is the probability that a falling object will hit somebody?
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