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c = 13.A mercury vapor lamp emits radiation with a wavelength of 4.36 x 10 -7 m. a.Use the wave equation to determine the frequency. = c Knowns and unknown.

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Presentation on theme: "c = 13.A mercury vapor lamp emits radiation with a wavelength of 4.36 x 10 -7 m. a.Use the wave equation to determine the frequency. = c Knowns and unknown."— Presentation transcript:

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2 c = 13.A mercury vapor lamp emits radiation with a wavelength of 4.36 x 10 -7 m. a.Use the wave equation to determine the frequency. = c Knowns and unknown c = 3.00 x 10 8 m/s ν = ______________ λ = ______________ wavelength4.36 x 10 -7 m = 3.00 x 10 8 m/s 4.36 x 10 -7 m = 6.88 x 10 14 1/s

3 c Wave Equation: Solved for wavelength ( ) = c = Solved for frequency ( ) = c c = = c

4 b.Use the your answer for frequency from the previous problem to find the energy of this photon. Knowns and unknown h = 6.626 x 10 -34 Js ν = ______________ E = ______________ 6.88 x 10 14 1/s E= (6.626 x 10 -34 Js)(6.88 x 10 14 1/s) = 6.88 x 10 14 1/s E = h E= 4.56 x 10 -19 J

5 14.What is the energy of a photon of green light with a frequency of 5.80 x 10 14 s -1 ? Knowns and unknown h = 6.626 x 10 -34 Js ν = ______________ E = ______________ 5.80 x 10 14 s -1 E= (6.626 x 10 -34 Js)(5.80 x 10 14 s -1 ) E = h E= 3.84 x 10 -19 J 14.What is the energy of a photon of green light with a frequency of 5.80 x 10 14 s -1 ?

6 c = 15. Suppose your favorite FM radio station broadcasts at a frequency of 101.3 MHz. a.What is the wavelength in meters of the radiation from this station? = c Knowns and unknown c = 3.00 x 10 8 m/s ν = ______________ λ = ______________ frequency101.3 MHz 101.3 x 10 6 Hz = 3.00 x 10 8 m/s 101.3 x 10 6 1/s = 2.96 m

7 Knowns and unknown h = 6.626 x 10 -34 Js ν = ______________ E = ______________ 101.3 x 10 6 Hz E= (6.626 x 10 -34 Js)(101.3 x 10 6 s -1 ) E = h E= 6.71 x 10 -26 J 15. Suppose your favorite FM radio station broadcasts at a frequency of 101.3 MHz. b.How much energy is produced from this electromagnetic radiation? frequency101.3 MHz


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