University Physics with Modern Physics (14th Edition)
14th Edition
ISBN: 9780321973610
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 39, Problem 39.5DQ
To determine
The temperature of galaxies and the inter-galactic medium.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
6.
Use Boltzmann distribution to solve this problem.
A system consists of 3,000 particles that can only occupy two energy levels: a nondegen-
erate ground state of 0.052 eV and a threefold degenerate excited state at 0.156 eV. If
T = 900 K,
(а)
find the number of particles at each energy level.
–0156
ev
(b)
what is the total energy of the system?
0,052
ev
Consider the following.
(a) Model the tungsten filament of a lightbulb as a blackbody at temperature 3320 K. Determine the wavelength of light it emits most strongly.
Your response differs from the correct answer by more than 10%. Double check your calculations. nm
I need help trying to figgure out how to fill out the graph by just using the info on the graph
Chapter 39 Solutions
University Physics with Modern Physics (14th Edition)
Ch. 39.2 - Prob. 39.2TYUCh. 39.3 - Prob. 39.3TYUCh. 39.4 - Prob. 39.4TYUCh. 39.5 - Prob. 39.5TYUCh. 39.6 - Prob. 39.6TYUCh. 39 - Prob. 39.1DQCh. 39 - Prob. 39.2DQCh. 39 - Prob. 39.3DQCh. 39 - When an electron beam goes through a very small...Ch. 39 - Prob. 39.5DQ
Ch. 39 - Prob. 39.6DQCh. 39 - Prob. 39.7DQCh. 39 - Prob. 39.8DQCh. 39 - Prob. 39.9DQCh. 39 - Prob. 39.10DQCh. 39 - Prob. 39.11DQCh. 39 - Prob. 39.12DQCh. 39 - Prob. 39.13DQCh. 39 - Prob. 39.14DQCh. 39 - Prob. 39.15DQCh. 39 - Prob. 39.16DQCh. 39 - Prob. 39.17DQCh. 39 - Prob. 39.18DQCh. 39 - Prob. 39.19DQCh. 39 - Prob. 39.20DQCh. 39 - Prob. 39.21DQCh. 39 - When you check the air pressure in a tire, a...Ch. 39 - Prob. 39.1ECh. 39 - Prob. 39.2ECh. 39 - Prob. 39.3ECh. 39 - Prob. 39.4ECh. 39 - Prob. 39.5ECh. 39 - Prob. 39.6ECh. 39 - Prob. 39.7ECh. 39 - Prob. 39.8ECh. 39 - Prob. 39.9ECh. 39 - Prob. 39.10ECh. 39 - Prob. 39.11ECh. 39 - Prob. 39.12ECh. 39 - Prob. 39.13ECh. 39 - Prob. 39.14ECh. 39 - Prob. 39.15ECh. 39 - Prob. 39.16ECh. 39 - Prob. 39.17ECh. 39 - Prob. 39.18ECh. 39 - Prob. 39.19ECh. 39 - Prob. 39.20ECh. 39 - Prob. 39.21ECh. 39 - Prob. 39.22ECh. 39 - Prob. 39.23ECh. 39 - Prob. 39.24ECh. 39 - Prob. 39.25ECh. 39 - Prob. 39.26ECh. 39 - Prob. 39.27ECh. 39 - Prob. 39.28ECh. 39 - Prob. 39.29ECh. 39 - Prob. 39.30ECh. 39 - Prob. 39.31ECh. 39 - Prob. 39.32ECh. 39 - Prob. 39.33ECh. 39 - Prob. 39.34ECh. 39 - Prob. 39.35ECh. 39 - Prob. 39.36ECh. 39 - Prob. 39.37ECh. 39 - Prob. 39.38ECh. 39 - Prob. 39.39ECh. 39 - Prob. 39.40ECh. 39 - Prob. 39.41ECh. 39 - Prob. 39.42ECh. 39 - Prob. 39.43ECh. 39 - Prob. 39.44ECh. 39 - Prob. 39.45ECh. 39 - Prob. 39.46ECh. 39 - Prob. 39.47ECh. 39 - Prob. 39.48ECh. 39 - Prob. 39.49ECh. 39 - Prob. 39.50PCh. 39 - Prob. 39.51PCh. 39 - Prob. 39.52PCh. 39 - Prob. 39.53PCh. 39 - Prob. 39.54PCh. 39 - Prob. 39.55PCh. 39 - Prob. 39.56PCh. 39 - Prob. 39.57PCh. 39 - Prob. 39.58PCh. 39 - Prob. 39.59PCh. 39 - An Ideal Blackbody. A large cavity that has a very...Ch. 39 - Prob. 39.61PCh. 39 - Prob. 39.62PCh. 39 - Prob. 39.63PCh. 39 - Prob. 39.64PCh. 39 - Prob. 39.65PCh. 39 - Prob. 39.66PCh. 39 - Prob. 39.67PCh. 39 - Prob. 39.68PCh. 39 - Prob. 39.69PCh. 39 - Prob. 39.70PCh. 39 - Prob. 39.71PCh. 39 - Prob. 39.72PCh. 39 - Prob. 39.73PCh. 39 - Prob. 39.74PCh. 39 - Prob. 39.75PCh. 39 - Prob. 39.76PCh. 39 - Prob. 39.77PCh. 39 - Prob. 39.78PCh. 39 - Prob. 39.79PCh. 39 - Prob. 39.80PCh. 39 - A particle with mass m moves in a potential U(x) =...Ch. 39 - Prob. 39.82PCh. 39 - Prob. 39.83PCh. 39 - DATA In the crystallography lab where you work,...Ch. 39 - Prob. 39.85PCh. 39 - Prob. 39.86CPCh. 39 - Prob. 39.87CPCh. 39 - Prob. 39.88PPCh. 39 - Prob. 39.89PPCh. 39 - Prob. 39.90PPCh. 39 - Prob. 39.91PP
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
- 6. Use Boltzmann distribution to solve this problem. A system consists of 3, 000 particles that can only occupy two energy levels: a nondegen- erate ground state of 0.052 eV and a threefold degenerate excited state at 0.156 eV. If T = 900 K, (a) find the number of particles at each energy level. -0156 ev (b) what is the total energy of the system? 0,052 evarrow_forward3. Dimensional analysis can provide insight into Stefan-Boltzmann's law for the radiation from a black body. According to this law the intensity of radiation, in units of J s-' m-², from a body at temperature Tis 1 = GT*, where e is Stefan-Boltzmann's constant. Because black-body radiation can be considered to be a gas of photons, i.e. quantum particles which move with velocity e with typical energies of the order of kT, the intensity I is a function of h, c and kT. Use dimensional analysis to confirm that Iis proportional to 7 and find the dependence of a on h and c.arrow_forwardThe Sun radiates almost like a perfect blackbody at a temperature of T= 5800 K. a) Show, using the Stefan-Boltzmann law, that the rate at which it radiates energy is - 4x1026 W. b) If you were at Earth's orbit, in space, how many Sun photons would reach you per second? Assume you have a mass of 70 kg, are spherical and full of water. You may need to find your cross sectional area and assume all Sun photons move in the same direction.arrow_forward
- The thermal (black-body) radiation from a star peaks at a wavelength of 300 nm. What is the surface temperature of the star in K?arrow_forward5.40x106 atoms are excited to an upper energy level at t = 0 s. At the end of 30.0 ns , 90.0% of these atoms have undergone a quantum jump to the ground state. You may want to review (Pages 1198 - 1200). Part A How many photons have been emitted? ΥΠ ΑΣφ ? photons Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the lifetime of the excited state? ην ΑΣφ ? ns Submit Request Answerarrow_forwardQUESTION1: Stefan-Boltzman law can be used to estimate H emitted from a surface where H = AeoT, where H = surface area (m2) in units of watts, e = diffusivity characterizing the spreading properties of the surface, o = a universal constant called the Stefan-Boltzman constant. (-5.67x108 W m?K4) and T = absolute temperature (K). a) Determine the error of the radiation H of a steel sphere surface with radius = 0.15 + 0.02 m, e 0.90+ 0.05 and T = 550 ± 25 K. Compare your results with the exact error. Calculations b) radius = 0.15 0.01 m, e 0.90 +0.025 Repeat for T = 550 12.5 K. and Interpret your results.arrow_forward
- Part A: If X=2.44 micrometers, what is the surface temperature of object A? Enter the numerical values in SI units. Part B: Which statement(s) characterize(s) the photons radiated by the object A? (Check any/all correct answers) a) The maximum wavelength of the mitted photons is X. b) All the emitted photons have a wavelength of X. c) Most (but not all) of the emitted photons have a wavelength of X.arrow_forwardQuestion A7 The intensity of the emitted radiation by a star is at a maximum at a wavelength of 78.9 nm. a) Calculate the surface temperature of the star. b) Calculate the ratio of the intensity radiated at 65.0 nm to the maximum intensity. Assume that the star radiates like an ideal blackbody.arrow_forwardA) What is the approximate wavelength emitted from helium represented by the bright yellow emission line below? What is it's frequency in HZ and energy in eV? (1 eV= 1.6 x 10-19 joules). B) If the excited helium electron that emits a yellow photon in this line starts with a potential energy of 8 eV, what is the potential energy of the electron afterwards? Assume that the emission of a yellow photon is allowed by the laws of quantum mechanics. Also don't worry about the other electron.arrow_forward
- 5. Consider a system of classical non-interacting particles constrained to be in the XY plane sub- ject to the potential: V(x, y) = a(x - y)². If they are in equilibrium with a thermal bath at temperature T, what is the average energy per particle? The Boltzmann constant is kg. (a) kBT (b) kBT (c) 2kgT (d) kBTarrow_forwardWhen stars like the Sun die, they lose their outer layers and expose their very hot cores. These exposed cores are called white dwarf stars. A certain white dwarf star has a peak emission wavelength of 0.546 nm. Approximating the star as a blackbody, what is its surface temperature? Wien's Displacement constant is b = 2.898 x 10-3 K m. The Stefan-Boltzmann constant is ? = 5.670 x 10-8 W/m2K4.arrow_forwardSuppose an infrared photon has a frequency of 1.9x1013 Hz. a) How many of these photons would need to be absorbed simultaneously by a molecule with a binding energy of 10.0 eV to break it apart? b) What is the energy, in eV of a y-ray of frequency 2.95 x 1020 Hz? c) What is the largest number of molecules from part (a) that a single such y-ray could break apart?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 LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStaxGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Modern Physics
Physics
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill