13. Awave takes o.25 second to complete four cycles. What is the wave's frequency and Period? 14. Awave takes 10 seconds to complete two complete cycles. (a) How long does it take to complete one cycle? (b) What is its period? (c) What is its frequency? 15. A certain water wave has a wavelength of 25 m and a frequency of 0.25 Hz. What is its Velocity? 16. Two sailboats are anchored 12 m apart. As a series of waves passes, the boats bob up and down but when one is up, the other is always down. What wavelength could produce this effect? 17. As a sailor on one of the boat in problem #16, you notice that you go from the highest position to the lowest position and back to the highest in 4 seconds. (a) What was the period of the wave? (b) What was the frequency? ( c)) What was its velocity? (Hint: you need to use your answer from problem # 16) 18. The laser in a compact disk (CD) player uses light with a wavelength of 780 nm. What is the frequency of this light? (Hint: convert nanometers to meters; 1m = 10'nm . 19. NPR (National Public Radio) broadcasts at 89.3 MHz (or 89300000 Hz). Radio waves travel at the speed of light, which is 3X 10"m/s . What is the wavelength that NPR uses to broadcast its news? 20. What is the energy of an ultraviolet photon having a wavelength of 1. 18 X 10 "m? (Hint 1: first use e = s, where c = 3X 10°m/s, to find the frequency). (Hint 2: then substitute the value of frequency in E = hf, where h = 6.626X10").s
13. Awave takes o.25 second to complete four cycles. What is the wave's frequency and Period? 14. Awave takes 10 seconds to complete two complete cycles. (a) How long does it take to complete one cycle? (b) What is its period? (c) What is its frequency? 15. A certain water wave has a wavelength of 25 m and a frequency of 0.25 Hz. What is its Velocity? 16. Two sailboats are anchored 12 m apart. As a series of waves passes, the boats bob up and down but when one is up, the other is always down. What wavelength could produce this effect? 17. As a sailor on one of the boat in problem #16, you notice that you go from the highest position to the lowest position and back to the highest in 4 seconds. (a) What was the period of the wave? (b) What was the frequency? ( c)) What was its velocity? (Hint: you need to use your answer from problem # 16) 18. The laser in a compact disk (CD) player uses light with a wavelength of 780 nm. What is the frequency of this light? (Hint: convert nanometers to meters; 1m = 10'nm . 19. NPR (National Public Radio) broadcasts at 89.3 MHz (or 89300000 Hz). Radio waves travel at the speed of light, which is 3X 10"m/s . What is the wavelength that NPR uses to broadcast its news? 20. What is the energy of an ultraviolet photon having a wavelength of 1. 18 X 10 "m? (Hint 1: first use e = s, where c = 3X 10°m/s, to find the frequency). (Hint 2: then substitute the value of frequency in E = hf, where h = 6.626X10").s
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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