sessio Course Home Ch6 Problem 6.19 Part A What is the frequency of radiation th

Question

sessio Course Home Ch6 Problem 6.19 Part A What is the frequency of radiation that has a wavelength of 11 m , about the size of a bacterium? Express your answer using two significant figures. Submit My Answers Give Up Part B What is the wavelength of radiation that has a frequency of 540×1014 s-1 Express your answer using three significant figures. ? nim Submit My Answers Give Up Part C Would the radiations in part (a) or part (b) be visible to the human eye? Check all that apply. The radiation in (a) is "visible" to humans The radiation in (b) is "visible" to humans Submit My Answers Give Up Part D

Explanation / Answer

A)

we have:

wavelength = 1.1*10^-5 m

we have below equation to be used:

frequency = speed of light/wavelength

=(3.0*10^8 m/s)/(1.1*10^-5 m)

= 2.7*10^13 Hz

Answer: 2.7*10^13 s-1

B)

we have:

frequency = 5.4*10^14 s-1

we have below equation to be used:

wavelength = speed of light/frequency

=(3.0*10^8 m/s)/(5.4*10^14 s-1)

= 5.6*10^-7 m

Answer: 5.6*10^-7 m

C)

wavelength in B falls in visible region but not a

Answer: The radiation in b is visible

D)

t = 55.0 us = 55*10^-6 s

speed = 3.0*10^8 m/s

use:

distance = speed * time

= 3.0*10^8 m/s * 55*10^-6 s

= 16500 m

Answer: 16500 m

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