Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 4, Problem 43P
(a)
To determine
The average deceleration of the atomic beam.
(b)
To determine
The magnitude of the distance of the atom .
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Steven Chu, Claude Cohen-Tannoudji, and William Phillips received the 1997 Nobel Prize in Physics for “the development of methods to cool and trap atoms with laser light.” One part of their work was with a beam of atoms (mass ~ 10-25 kg) that move at a speed on the order of 1 km/s, similar to the speed of molecules in air at room temperature. An intense laser light beam tuned to a visible atomic transition (assume 500 nm) is directed straight into the atomic beam; that is, the atomic beam and the light beam are traveling in opposite directions. An atom in the ground state immediately absorbs a photon. Total system momentum is conserved in the absorption process. After a lifetime on the order of 10-8 s, the excited atom radiates by spontaneous emission. It has an equal probability of emitting a photon in any direction. Therefore, the average “recoil” of the atom is zero over many absorption and emission cycles. (a) Estimate the average deceleration of the atomic beam. (b) What is the…
A physicist makes many measurements of the frequency of light emitted when a electron transitions from a particular excited state of an ion. For the system she is studying, the only allowed transition from the excited state is to the ground state. Her measurements have an average value of favg=2.13×1015 Hz with a standard deviation of ?f=17.4×106 Hz.
What is the minimum lifetime Δtmin of the excited state in seconds?
a) A typical atomic nucleaus is about 5.00×10-¹5 m in radius. Use uncertanity principle to
place a lower limit on the energy an electron must have if it is to be a part of nucleaus.
b) Find phase velocites of 2 waves moving with velocities v₁= 7m/s and v2= 6m/s, having
wavelengths A₁ = 15nm and A2= 22nm, (b) Investigate that combined waveform moves
equal, faster/slower than either of its component waves?
Chapter 4 Solutions
Modern Physics
Ch. 4.2 - Exercise 1 Find the horizontal speed vx for this...Ch. 4.2 - Prob. 2ECh. 4.3 - Prob. 3ECh. 4.3 - Prob. 4ECh. 4.3 - Prob. 5ECh. 4 - Prob. 1QCh. 4 - Prob. 2QCh. 4 - Prob. 3QCh. 4 - Prob. 4QCh. 4 - Prob. 5Q
Ch. 4 - Prob. 6QCh. 4 - Prob. 7QCh. 4 - Prob. 8QCh. 4 - Prob. 9QCh. 4 - Prob. 10QCh. 4 - Prob. 11QCh. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - A mystery particle enters the region between the...Ch. 4 - Prob. 4PCh. 4 - A Thomson-type experiment with relativistic...Ch. 4 - Prob. 6PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11PCh. 4 - Prob. 12PCh. 4 - Prob. 13PCh. 4 - Prob. 14PCh. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - Prob. 18PCh. 4 - Prob. 19PCh. 4 - Prob. 20PCh. 4 - Prob. 21PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - Prob. 32PCh. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - Prob. 37PCh. 4 - Prob. 38PCh. 4 - Prob. 39PCh. 4 - Prob. 40PCh. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Prob. 43PCh. 4 - Prob. 44P
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
- hi, can you solve this ? Calculate the average kinetic energy of ejected electrons in units of kJ / mol when a light with a wavelength of 215 nm hits a metal surface with a work function of 435 kJ / mol.arrow_forwardProblem 4: Ruby lasers have chromium atoms doped in an aluminum oxide crystal. The energy level diagram for chromium in a ruby is shown in the figure. Part (a) What energy photons can pump chromium atoms in a ruby laser from the ground state to its second excited state in eV? Part (b) What is the wavelength of this photon in nm? Part (c) What part of the visible light spectrum is it?arrow_forwardIn a photoelectric effect experiment, it is found that no current flows unless the incident light has a wavelength shorter than 359 nm nm. What stopping potential will be needed to halt the current if light of 225 nm falls on the surface? Express your answer with the appropriate units. μA 2.249 V Vo =arrow_forward
- A laser emits 2.13 x 1016 photons per second, each of which has wavelength 625 nm. Find (a) the energy and momentum of a single photon and (b) the power output of the laserarrow_forwardBarium has a work function of 2.48 eV. 1. a) What is the maximum kinetic energy of electrons if the metal is illuminated by UV light of wavelength 365 nm? 2. b) What is their speed?arrow_forward1) A laser produces light of wavelength 525 nmnm in an ultrashort pulse. What is the minimum duration of the pulse if the minimum uncertainty in the energy of the photons is 1.0%%? Express your answer with the appropriate units.arrow_forward
- Identify the following:a) A phenomenon that gives insight into the nature of light in which a materialemits electrons from its surface when illuminated.b) A constant which is the ratio of the charge on each conductor to the potentialdifference between the conductors for a particular capacitor.c) A light source that produces a beam of highly coherent and very nearlymonochromatic light as a result of cooperative emission from many atoms.d) The peaking of the current amplitude at a certain frequency.e) The branch of physics which deals with the behavior of light and otherelectromagnetic waves.f) The voltage amplitude across the circuit to the current amplitude in an ACcircuit.g) The resulting state of matter where light atoms are fully ionized.h) Any motion of charge from one region to another.i) The study of energy transformations involving heat, mechanical work, andother aspects of energy and how these transformations relate to the properties ofmatter.j) An important class of materials…arrow_forwardThe binding energies of K-shell and L-shell electrons in copper are 8.979 and 0.951 keV, respectively. If a Ka x ray from copper is incident on a sodium chloride crystal and gives a first-order Bragg reflection at an angle of 74.1° measured relative to parallel planes of sodium atoms, what is the spacing between these parallel planes?arrow_forwardA student is using a 100 lasers that he bought from e-bay. If each source produces a wave of amplitude = 212967 V/m, then calculate the irradiance produced by these 100 lasers when they are used to illuminate one point.arrow_forward
- The red lasers used to read the barcodes of products at the grocery stores produce light with a wavelength of 633 nm. The electrical power consumption of a single grocery store laser is 5.00000 × 10-3 J s-1. If the grid is burning CH4 gas (methane) to produce electricity, how many moles of CH4 must be burned to produce enough energy to run the grocery store laser for 365 days? The heat of combustion of methane is -890 kJ/mol. Assume the combustion energy is converted to electricity with 100% efficiency. (Hint, you will need to find the total amount of energy the laser emits as light, assuming the laser works with 100% effeciency i.e. all the electrical energy is converted to 633 nm light) Final answer should be in molarrow_forwardA collection of atoms has 20% of the sample in a state 4.7 eV above the ground state. If these emit coherent radiation, what is the wavelength of the laser light produced in nanometers? Please give your answer with no decimal places. (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ∙ s, 1 eV = 1.60 × 10-19 J)arrow_forwardCalculate the wavelength corresponding to an electron with the energy of 104 eV (kiloelectronvolt). Give your answer in Angstrom (10-10 m, for example, if the answer is 1.6x10-10 m, then write 1.6 as your answer). This should give you a good idea why one can use a crystal lattice with an average interatomic distance of around 10-10 m to observe electron diffraction.arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Physics 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 LearningModern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage Learning
- University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
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
Modern Physics
Physics
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax