General Physics, 2nd Edition
2nd Edition
ISBN: 9780471522782
Author: Morton M. Sternheim
Publisher: WILEY
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Chapter 26, Problem 24E
(a)
To determine
The reduced mass of the molecule.
(b)
To determine
The spring constant of the molecule.
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A photon in a laboratory experiment has an energy of 4.2 eV. What is the frequency of this photon? Planck’s constant is 6.63 × 10−34 J · s. Answer in units of Hz.
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Chapter 26 Solutions
General Physics, 2nd Edition
Ch. 26 - Prob. 1RQCh. 26 - Prob. 2RQCh. 26 - Prob. 3RQCh. 26 - Prob. 4RQCh. 26 - Prob. 5RQCh. 26 - Prob. 6RQCh. 26 - Prob. 7RQCh. 26 - Prob. 1ECh. 26 - Prob. 2ECh. 26 - Prob. 3E
Ch. 26 - Prob. 4ECh. 26 - Prob. 5ECh. 26 - Prob. 6ECh. 26 - Prob. 7ECh. 26 - Prob. 8ECh. 26 - Prob. 9ECh. 26 - Prob. 10ECh. 26 - Prob. 11ECh. 26 - Prob. 12ECh. 26 - Prob. 13ECh. 26 - Prob. 14ECh. 26 - Prob. 15ECh. 26 - Prob. 16ECh. 26 - Prob. 17ECh. 26 - Prob. 18ECh. 26 - Prob. 19ECh. 26 - Prob. 20ECh. 26 - Prob. 21ECh. 26 - Prob. 22ECh. 26 - Prob. 23ECh. 26 - Prob. 24ECh. 26 - Prob. 25ECh. 26 - Prob. 26ECh. 26 - Prob. 27ECh. 26 - Prob. 28ECh. 26 - Prob. 29ECh. 26 - Prob. 30ECh. 26 - Prob. 31ECh. 26 - Prob. 32ECh. 26 - Prob. 33ECh. 26 - Prob. 34E
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- A photon in a laboratory experiment has anenergy of 4.1 eV.What is the frequency of this photon?Planck’s constant is 6.63 × 10−34 J · s.Answer in units of Hz.arrow_forwardA neutron of mass 1.675 × 10-27 kg has a de Broglie wavelength of 7.8x10-12 m. What is the kinetic energy (in eV) of this non-relativistic neutron? Please give your answer with two decimal places. 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ∙ s.arrow_forwardb. An electron and a photon has the same wavelength of 0.21 nm. Calculate the momentum and energy (in eV) of the electron and the photon. (Given c =3.00x108 m s-1, h =6.63 x 1034 J s, me=9.11 x 10-31 kg, mp=1.67 x 1027 kg and e=1.60x1019 C)arrow_forward
- Calculate the de Broglie wavelength for : a. a jogger of mass 77 kg runs with at speed of 4.1 m s1. b. an electron of mass 9.11x10-31 kg moving at 3.25x105 m s1 (Given the Planck's constant, h =6.63x1034J s)arrow_forwardHELP ME ASAP 1. The universe has a typical temperature of only 3.0 K. If the intensities of light of different frequencies follow a blackbody distribution, then which frequency of light does the universe give off most? 2. A new, extremely precise apparatus has measured momentum (y component) of a certain proton to be: 5 x 10-28 kg m/s with an uncertainty of only 2 x 10-29 kg m/s. If the y-position of the proton is also measured, approximately what is the lowest possible uncertainty with which this measurement can be made? 3. What electrical force does a Uranium nucleus (Z=92) exert on one of its inner electrons, located at a distance of 175 picometers (=1.75 x 10-10m) ?arrow_forwardA quantum of electromagnetic radiation has an energy of 1.02 keV. What is its wavelength? The speed of light is 2.99792 x 10° m/s, and Planck's constant is 6.62607 × 10¬34 J. s. Answer in units of nm.arrow_forward
- A blackbody (a hollow sphere whose inside is black) emits radiation when it is heated. The emittance (Mλ, W/m3), which is the power per unit area per wavelength, at a given temperature (T, K) and wavelength (λ, m) is given by the Planck distribution, where h is Planck's constant, c is the speed of light, and k is Boltzmann's constant. Determine the temperature in degrees Celsius at which a blackbody will emit light of wavelength 3.57 μm with an Mλ of 5.31×1010 W/m3. The power per unit area emitted can be determined by integrating Mλ between two wavelengths, λ1 and λ2. However, for narrow wavelength ranges (Δλ), the power emitted can be simply calculated as the product of Mλ and Δλ. power emitted=MλΔλ Using the conditions from the first part of the question, determine the power emitted per square meter (W/m2) between the wavelengths 3.56 μm and 3.58 μm.arrow_forwardA laser emits a pulse of light that lasts 10 ns. The light has a wavelength of 690 nm, and each pulse has an energy of 480 mJ. How many photons are emitted in each pulse? Let 1 eV = 1.60 × 10−19 J, the mass of an electron m = 9.11 × 10−31 kg, the speed of light c = 3.00 × 108 m/s, and Planck’s constant h = 4.136 × 10−15 eV ∙ s.arrow_forwardA gas of rubidium atoms and a gas of sodium atoms have been cooled to the same very low temperature. What can we say about the de Broglie wavelengths of typical atoms in the two gases?A. The sodium atoms have the longer wavelength.B. The wavelengths are the same.C. The rubidium atoms have the longer wavelength.arrow_forward
- A ball has a mass of 0.129 kg just before it strikes the Earth after being dropped from a building 36.2 m tall. What is its de Broglie wavelength? The acceleration of gravity is 9.8 m/s 2 and Planck’s constant is 6.62607 × 10−34 J · s. Answer in units of m.arrow_forward2. A collection of N harmonic oscillators at thermal equilibrium and at absolute temperature T shown by statistical mechanics has a thermodynamic energy of the form Nhv U = hv el kgT 1 where b is Planck's constant, kB is Boltzmann's constant, T is absolute temperature, and v is the vibration frequency. (a) Determine the limit U at v = 0 and interpret the result physically. (b) Determine the limit U when T = 0 and interpret the result physicallyarrow_forward3. A molecule in its first excited state will spontaneously decay to the ground state by emitting a photon. For two samples of two different molecules the lifetime, t, of this process is 11 ps and 3.5 ns. Calculate the minimum FWHM, I, of the resulting spectral lines of the two samples. Explain your answer in terms of the uncertainty principle.arrow_forward
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