hw1 - Killough, Ian Homework 1 Due: Sep 8 2006, 11:00 pm...

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Unformatted text preview: Killough, Ian Homework 1 Due: Sep 8 2006, 11:00 pm Inst: Donna C Lyon 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. This HW assignment is due Thursday, September 7, by 11PM. 001 (part 1 of 1) 10 points What is the correct order of increasing en- ergy? 1. x-rays, -rays, microwaves, visible light, ultraviolet light 2. microwaves, ultraviolet light, visible light, x-rays, -rays 3. ultraviolet light, visible light, microwaves, x-rays, -rays 4. microwaves, x-rays, -rays, visible light, ultraviolet light 5. microwaves, visible light, ultraviolet light, x-rays, -rays correct Explanation: microwaves < visible light < ultraviolet light < x-rays < -rays 002 (part 1 of 1) 10 points In quantum mechanics the intensity of a light beam is interpreted as the 1. square of the amplitude of the light wave. 2. frequency of the light times Plancks con- stant ( h ). 3. energy E = h c of the photon. 4. number of photons passing a point per second times the energy of each photon. cor- rect 5. speed of light ( c ). Explanation: Comprehension 003 (part 1 of 1) 10 points The wavelength of light with a frequency of 3 . 30 10 14 s- 1 is 1. 909 nm. correct 2. 650 nm. 3. 450 nm. 4. 200 nm. Explanation: 004 (part 1 of 1) 10 points Which of the following statements is true re- garding electromagnetic radiation? 1. The frequency of electromagnetic radia- tion determines how fast it travels. 2. Electromagnetic radiation with a wave- length of 400 nm has a frequency that is lower than that with a wavelength of 600 nm. 3. Electromagnetic radiation with a wave- length of 400 nm travels faster than that with a wavelength of 600 nm. 4. Electromagnetic radiation with a wave- length of 600 nm travels faster than that with a wavelength of 400 nm. 5. Electromagnetic radiation with a wave- length of 600 nm has a frequency that is lower than that with a wavelength of 400 nm. cor- rect Explanation: v = f , so = 1 f . Higher wavelengths cor- respond to lower frequencies, and vice versa ....
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hw1 - Killough, Ian Homework 1 Due: Sep 8 2006, 11:00 pm...

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