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[DOCX File]Electrons & Periodic Table Review
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7. A photon has 3.3 x 10-19 J of energy. What is the wavelength of this photon? What part of electromagnetic spectrum does it come from? 8. Which as more energy, a photon of violet light or a photon of red light from the extreme ends of the visible spectrum? How many times more energy does the bigger photon have? 9.
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Measuring Planck’s Constant Using the Photoelectric Effect
Ephoton = Ekinetic + Eescape The kinetic energy can be measured indirectly by using what is known as the stopping voltage. As the electrons escape, they find themselves moving through an electric field that wants to stop them before they complete their journey to the other electrode.
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[DOC File]Photoelectric Effect Practice Problems
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6. A photon has an energy of 4.00 x 10–19 J. Find… a. the frequency of the radiation. b. the wavelength of the radiation. c. the region of the electromagnetic spectrum that this radiation represents. 7. A photon of light has a wavelength of 3.20 x 105 m. Find… a. the frequency of the radiation. b. the energy of the photon.
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[DOC File]Name___________________________
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9) A certain photon after being scattered from a free electron at rest moves at an angle of 120° with respect to the incident direction. If the wavelength of the incident photon is 0.611 nm, what is the energy of the scattered photon? A) 1.05 × 10-16 J . B) 2.10 × 10-16 …
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[DOC File]Lab: Photoelectric Effect
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The photon energy is uncertain by the amount. J. The corresponding uncertainty in the frequency of light is Hz. This is the irreducible limit to the accuracy with which we can determine the frequency of the radiation emitted by an atom. As a result, the radiation from a group of excited atoms does not appear with the precise frequency .
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[DOC File]Light Problems
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Q: Find the energy of a photon released when an electron goes from n=5 to n=2 state in Hydrogen (PSRT) Ephoton = What color is this photon? E = Same Questions for Mercury. E = E = f= Problem Solving Strategy. If mass is in ___, use E=mc2. If mass is in __, use the conversion 1U = 931.5 MeV
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[DOC File]2
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What is the energy of a cosmic ray photon whose wavelength is 2.0 pm? 9.9 x 10-14 J Find the frequency of a microwave that carries 3.4 10-25 J of energy. 5.1 x 10 8 Hz NAME THE TERM DESCRIBED BY THE FOLLOWING DEFINITIONS: Word Bank: Anion Aufbau Cation Excited Ground Photon Valence Heisenburg Uncertainty Hund’s (rule) Principle Pauli ...
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Energy From Wavelength Example Problem
The kinetic energy of an ejected photon is given by the equation. where ( is the work function or the energy threshold required to eject the electron from the metal. Analyze. In this problem, we solve for (: where h = 6.626 ( 10–34 J ( s, ( = frequency of the light used to eject the electron, and KEelectron = 5.34 ( …
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How to find energy of a photon