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# (a) Write down the confi gurations for the groundstates of calcium and aluminum. (b)

ISBN: 9781133103721 454

## Solution for problem 38 Chapter 8

Modern Physics for Scientists and Engineers | 4th Edition

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Problem 38

(a) Write down the confi gurations for the groundstates of calcium and aluminum. (b) What are the LScoupling quantum numbers for the outside subshellelectrons? Write the spectroscopic symbol for eachatom.

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Short Assignment by 4/18/2016 https://session.masteringphysics.com/myct/assignmentPrintViewdispl... Short Assignment by 4/18/2016 Due: 11:00am on Monday, April 18, 2016 To understand how points are awarded, read theng Policy for this assignment. Problem 30.26 Part A How many photons are emitted per second by a laser that emits 2.0 of power at a wavelength Express your answer using two significant figures. ANSWER: = 6.4×10 15 photons/s Answer Requested Part B What is the frequency of the electromagnetic waves emitted by a laser Express your answer using three significant figures. ANSWER: = 4.74×10 14 Answer Requested The Photoelectric Effect Experiment Learning Goal: To understand the experiment that led to the discovery of the photoelectric effect. In 1887, Heinrich Hertz investigated the phenomenon of light striking a metal surface, causing the ejection of electrons from the metal. The classical theory of electromagnetism predicted that the energy of the electrons ejected should have been proportional to the intensity of the light. However, Hertz observed that the energy of the electrons was independent of the intensity of the light. Furthermore, for low enough frequencies, no electrons were ejected, no

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