isly.com/myct/itemView?assignmentProblemiD 88959133 Problem 5.41 previous| 7 of

Question

isly.com/myct/itemView?assignmentProblemiD 88959133 Problem 5.41 previous| 7 of 48ned Problem 5.41 Part A Optical fibers allow the fast transmission of vast amounts of data. In one type of fiber, the wavelength of transmitted light is 3500 nm What is the frequency of the light? Express your answer to two significant figures and include the appropriate units. Value Units Subrnit My Answers Give.U Part B Fiber optic cable is available in 12 kan longths. How long will it take for a signal to tr avel that distance assuming that the speed of ight in the cable is the same as in a vacuum Express your answer to two significant figures and include the appropriate units. Submit

Explanation / Answer

A)

lambda = 3500 nm = 3.500*10^-6 m
use:
f = c/lambda
=(3.0*10^8 m/s)/(300.5*10^-6 m)
= 8.6*10^13 Hz

Answer: 8.6*10^13 Hz

B)
distance = 12 km = 1.2*10^4 m
speed = 3*10^8 m/s
use:
time = distance / speed
= (1.2*10^4 m)/(3*10^8 m/s)
= 4.0*10^-5 s
Answer: 4.0*10^-5 s

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