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Unformatted text preview: song (shs546) Homework 20 weathers (22202) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points The magnetic field amplitude of an electro- magnetic wave is 1 . 8 10- 6 T. The speed of light is 2 . 99792 10 8 m / s . Calculate the amplitude of the electric field if the wave is traveling in free space. Answer in units of N / C. 002 10.0 points Gamma-ray bursters are objects in the uni- verse that emit pulses of gamma rays with high energies. The frequency of the most en- ergetic bursts has been measured at around 3 . 10 21 Hz. The speed of light is 3 10 8 m / s. What is the wavelength of these gamma rays? Answer in units of m. 003 (part 1 of 4) 10.0 points A cylindrical filament has radius 2 . 57 mm. Its resistance is 0 . 551 and its length is 1 . 95 m....
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This note was uploaded on 04/22/2011 for the course PHYS 2220 taught by Professor Littler during the Spring '00 term at North Texas.
- Spring '00