College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 28, Problem 18P
(a)
To determine
The energy of absorbed photon.
(b)
To determine
The allowed energies of absorbed photon when the atom eventually returns to ground state.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A hydrogen atom is in its ground state (n, = 1) when a photon impinges upon it.
The atom absorbs the photon, which has precisely the energy required to raise the atom to the n, = 3 state.
(a) What was the photon's energy (in eV)?
12.089
ev
(b) Later, the atom returns to the ground state, emitting one or more photons in the process. Which of the following energies
describes photons that might be emitted thus? (Select all that apply.)
O 13.6 ev
O 1.89 eV
V 12.1 eV
O 10.2 ev
There are two ways a hydrogen atom in the n, = 3 state can end up in the ground state. In the first, all of the energy goes
into one photon and the electron moves directly into the ground state. (What would be the energy of that photon?) In the
other, the electron "descends" in two stages, each accompanied by the emission of a photon. (What would be the energies
of those two photons?)
Assume a hypothetical atom with a nucleus that consists of two positrons (instead of
two protons). Positron has a charge of +1 and the mass of an electron. Write down the
hydrogen like energy of a neutral 2-positrons atom.
Consider a fission nuclear explosion producing a temperature of 24 million K (25∗107 K). a) What is be the peak wavelength of the thermally produced photons? b) What is the energy (in eV) for this peak wavelength photon?
Chapter 28 Solutions
College Physics
Ch. 28.3 - Prob. 28.1QQCh. 28.4 - Prob. 28.2QQCh. 28.5 - Prob. 28.3QQCh. 28 - Prob. 1CQCh. 28 - Prob. 2CQCh. 28 - Prob. 3CQCh. 28 - Prob. 4CQCh. 28 - Prob. 5CQCh. 28 - Prob. 6CQCh. 28 - Prob. 7CQ
Ch. 28 - Prob. 8CQCh. 28 - Prob. 9CQCh. 28 - Prob. 10CQCh. 28 - Prob. 11CQCh. 28 - Prob. 12CQCh. 28 - Prob. 13CQCh. 28 - Prob. 14CQCh. 28 - Prob. 15CQCh. 28 - Prob. 1PCh. 28 - Prob. 2PCh. 28 - Prob. 3PCh. 28 - Prob. 4PCh. 28 - Prob. 5PCh. 28 - Prob. 6PCh. 28 - Prob. 7PCh. 28 - Prob. 8PCh. 28 - Prob. 9PCh. 28 - Prob. 10PCh. 28 - Prob. 11PCh. 28 - Prob. 12PCh. 28 - Prob. 13PCh. 28 - Prob. 14PCh. 28 - Prob. 15PCh. 28 - Prob. 16PCh. 28 - Prob. 17PCh. 28 - Prob. 18PCh. 28 - Prob. 19PCh. 28 - Prob. 20PCh. 28 - Prob. 21PCh. 28 - Prob. 22PCh. 28 - Prob. 23PCh. 28 - Prob. 24PCh. 28 - Prob. 25PCh. 28 - Prob. 26PCh. 28 - Prob. 27PCh. 28 - Prob. 28PCh. 28 - Prob. 29PCh. 28 - Prob. 30PCh. 28 - Prob. 31PCh. 28 - Prob. 32PCh. 28 - Prob. 33PCh. 28 - Prob. 34PCh. 28 - Prob. 35PCh. 28 - Prob. 36PCh. 28 - Prob. 37PCh. 28 - Prob. 38PCh. 28 - Prob. 39PCh. 28 - Prob. 40PCh. 28 - Prob. 41PCh. 28 - Prob. 42PCh. 28 - Prob. 43PCh. 28 - Prob. 44PCh. 28 - Prob. 45PCh. 28 - Prob. 46APCh. 28 - Prob. 47APCh. 28 - Prob. 48APCh. 28 - Prob. 49APCh. 28 - Prob. 50APCh. 28 - Prob. 51APCh. 28 - Prob. 52APCh. 28 - Prob. 53APCh. 28 - Prob. 54AP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- CT scanners do not detect details smaller than about 0.5 Is this limitation clue to the wavelength of x lays? Explain.arrow_forwarda) Calculate the uncertainty in momentum for a proton confined to a nucleus of radius 6.0fm b) What is the kinetic energy of a photon with that momentum. c) Suppose a photon in that nucleus had a kinetic energy of 5.6MeV. If the photon were represented by a de Broglie wave, how many wavelengths could fit across the diameter of the nucleus?arrow_forwardA 1.3 MeV gamma-ray that Compton scattered in carbon did so with a scatter angle of 15°: What is the energy, wavelength and momemntum of the scattered photon. What is the kinetic energy and momentum of the recoil electron? What was the average distance the 1.3 MeV traveled in the carbon prior to scattering?arrow_forward
- J 5 Question 2 (1) Assume that the average energy of β-rays (electrons) emitted from the S-ray source is 0.8 MeV, and the average ionization energy of gas molecules (atoms) in the GM counter tube is about 30 eV. Find the number of gas molecules ionized when one electron enters the GM tube (1MeV = 10°eV). (2) Assuming that the electrons and cations thus generated are attracted to the electrode as they are, what is the total amount of negative charge generated by ionization in C (coulombs)? (3) If this ionization takes 10-4s, what is the current flowing through the anode?arrow_forwardSuppose an unknown element has an absorption spectrum with lines corresponding to 2.5, 4.7, and 5.1 eV aboveits ground state and an ionization energy of 11.5 eV. Drawan energy level diagram for this element. (b) If a 5.1-eVphoton is absorbed by an atom of this substance, in whichstate was the atom before absorbing the photon? What willbe the energies of the photons that can subsequently beemitted by this atom?arrow_forwardWhat are the (a) energy, (b) magnitude of the momentum, and (c) wavelength of the photon emitted when a hydrogen atom undergoes a transition from a state with n = 4 to a state with n = 2? (a) Number 2.55 Units eV (b) Number 1.3617 Units kg-m/s or N-s (c) Number 4.865976353 Units This answer has no unitsarrow_forward
- The mean free path length of a 0.7-MeV photon in lead is closest to which of the following? (a)0.1039 cm (b)0.6697 cm (c)0.7038 cm (d)1.1394 cm (e)0.8776 cmarrow_forwardA hydrogen atom is in its ground state (n; = 1) when a photon impinges upon it. The atom absorbs the photon, which has precisely the energy required to raise the atom to the n, = 3 state. (a) What was the photon's energy (in eV)? ev (b) Later, the atom returns to the ground state, emitting one or more photons in the process. Which of the following energies describes photons that might be emitted thus? (Select all that apply.) O 13.6 eV 1.89 eV 12.1 ev O 10.2 eVarrow_forwardA triply ionised beryllium atom (Be+++, Z = 4) has only one electron in orbit about the nucleus. If the electron decays from the n = 3 level to the first excited state (n = 2), calculate the wavelength of the photon emitted. give your answer in units of nm, rounded to one decimal place.arrow_forward
- 1) If an arm of a patient is to be imaged with a narrow beam of X-ray with 10000 photons at 100 keV. The total thickness of the arm is 8 cm with the bone thickness to be 3 cm and the muscle thickness 5 cm. Assuming HVL values of muscle and bone are 2.5 and 1 cm at 100 keV, respectively. How many photons are absorbed by the arm?arrow_forwardA photon is absorbed by a hydrogen atom in the ground state. If the electron is boosted from to the n = 6, what was the energy of the absorbed photon? Give your answer in electron volts (eV).arrow_forwardSome satellites use nuclear power. (a) If such a satellite emits a 1.00-W flux of y rays having an average energy of 0.500 MeV, how many are emitted per second? (b) These y rays affect other satellites. How far away must another satellite be to only receive one y ray per second per square meter?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Modern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Modern Physics
Physics
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College