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Physics1C_Chapter32_extra

Physics1C_Chapter32_extra - CHAPTER 32 ELECTROMAGNETIC...

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CHAPTER 32 ELECTROMAGNETIC WAVES EXTRA PROBLEMS Vah é  Peroomian
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PROBLEM 32.51 You are working outside your spaceship, at a distance of 2.0 AU from the sun (1 AU = 1.49 × 10 11 m), and lose contact with the ship’s hull and begin to drift away into space. After the fuel in your jetpack is exhausted, you find yourself 16.0 m from your spaceship with zero velocity relative to the ship. Fortunately, you are carrying a 200-W flashlight. You turn on the flashlight and use the beam as a “light rocket” to push yourself back toward the ship. (a) If you, your spacesuit, and the flashlight have a combined mass of 150 kg, how long will it take you to get back to the ship? (b) Is there another way you could use the flashlight to accomplish the same job?
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EXAMPLE 6 A plane electromagnetic wave varies sinusoidally at 90.0 MHz as it travels through vacuum along the positive x direction. The peak value of the electric field is 2.00 mV/m, and it is directed along the positive y direction. Find (a) the wavelength, (b) the
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