A nitrogen gas laser pulse with a wavelength of 337 nm contains 3.83 mJ of energy. How
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A nitrogen gas laser pulse with a wavelength of 337 nm contains 3.83 mJ of energy. How many photons does it contain?
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SORT You are given the wavelength and total energy of a light pulse and asked to find the number of photons it contains. STRATEGIZE In the first part of the conceptual plan, calculate the energy of an individual photon from its wavelength. In the second part, divide the total energy of the pulse by the energy of a photon to determine the number of photons in the pulse. GIVEN: Epulse = 3.83 mJ λ = 337 nm FIND: number of photons CONCEPTUAL PLAN λ E = hc λ Ephoton Epulse Ephoton = number of photons RELATIONSHIPS USED E= hc/> (Equation 8.3)
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337 nm X Ephoton hc 10 m 1 nm 337 x 107 m 6626 X 1034Js 3...View the full answer
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