Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780136139225
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Chapter 37, Problem 15P
To determine
The metals among the given metals do no emit electrons when visible light shines on it.
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A 4.15-volt battery is connected across a parallel-plate capacitor. Illuminating the plateswith ultraviolet light causes electrons to be emitted from the plates with a speed of 1.76 ×10^6 m/s. (a) Suppose electrons are emitted near the center of the negative plate and travelperpendicular to that plate toward the opposite plate. Find the speed of the electrons whenthey reach the positive plate. (b) Suppose instead that electrons are emitted perpendicularto the positive plate. Find their speed when they reach the negative plate
(II) Show that the energy E (in electron volts) of a photon
whose wavelength is A (nm) is given by
1.240 x 10° eV·nm
E =
λ (nm)
Use at least 4 significant figures for values of h, c, e (see
inside front cover).
Chapter 37 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 37.2 - Prob. 1AECh. 37.2 - Prob. 1BECh. 37.4 - Prob. 1CECh. 37.7 - Prob. 1DECh. 37.7 - Prob. 1EECh. 37.11 - Prob. 1FECh. 37 - Prob. 1QCh. 37 - Prob. 2QCh. 37 - Prob. 3QCh. 37 - Prob. 4Q
Ch. 37 - Prob. 5QCh. 37 - Prob. 6QCh. 37 - Prob. 7QCh. 37 - Prob. 8QCh. 37 - Prob. 9QCh. 37 - Prob. 10QCh. 37 - Prob. 11QCh. 37 - Prob. 12QCh. 37 - Prob. 13QCh. 37 - Prob. 14QCh. 37 - Prob. 15QCh. 37 - Prob. 16QCh. 37 - Prob. 17QCh. 37 - Prob. 18QCh. 37 - Prob. 19QCh. 37 - Prob. 20QCh. 37 - Prob. 21QCh. 37 - Prob. 22QCh. 37 - Prob. 23QCh. 37 - Prob. 24QCh. 37 - Prob. 25QCh. 37 - Prob. 26QCh. 37 - Prob. 27QCh. 37 - Prob. 28QCh. 37 - Prob. 1PCh. 37 - Prob. 2PCh. 37 - Prob. 3PCh. 37 - Prob. 4PCh. 37 - Prob. 5PCh. 37 - Prob. 6PCh. 37 - Prob. 7PCh. 37 - Prob. 8PCh. 37 - Prob. 9PCh. 37 - Prob. 10PCh. 37 - Prob. 11PCh. 37 - Prob. 12PCh. 37 - Prob. 13PCh. 37 - Prob. 14PCh. 37 - Prob. 15PCh. 37 - Prob. 16PCh. 37 - Prob. 17PCh. 37 - Prob. 18PCh. 37 - Prob. 19PCh. 37 - Prob. 20PCh. 37 - Prob. 21PCh. 37 - Prob. 22PCh. 37 - Prob. 23PCh. 37 - Prob. 24PCh. 37 - Prob. 25PCh. 37 - Prob. 26PCh. 37 - Prob. 27PCh. 37 - Prob. 28PCh. 37 - Prob. 29PCh. 37 - Prob. 30PCh. 37 - Prob. 31PCh. 37 - Prob. 32PCh. 37 - Prob. 33PCh. 37 - Prob. 34PCh. 37 - Prob. 35PCh. 37 - Prob. 36PCh. 37 - Prob. 37PCh. 37 - Prob. 38PCh. 37 - Prob. 39PCh. 37 - Prob. 40PCh. 37 - Prob. 41PCh. 37 - Prob. 42PCh. 37 - Prob. 43PCh. 37 - Prob. 44PCh. 37 - Prob. 45PCh. 37 - Prob. 46PCh. 37 - Prob. 47PCh. 37 - Prob. 48PCh. 37 - Prob. 49PCh. 37 - Prob. 50PCh. 37 - Prob. 51PCh. 37 - Prob. 52PCh. 37 - Prob. 53PCh. 37 - Prob. 54PCh. 37 - Prob. 55PCh. 37 - Prob. 56PCh. 37 - Prob. 57PCh. 37 - Prob. 58PCh. 37 - Prob. 59PCh. 37 - Prob. 60PCh. 37 - Prob. 61PCh. 37 - Prob. 62PCh. 37 - Prob. 63PCh. 37 - Prob. 64PCh. 37 - Prob. 65PCh. 37 - Prob. 66PCh. 37 - Prob. 67PCh. 37 - Prob. 68PCh. 37 - Prob. 69PCh. 37 - Prob. 70PCh. 37 - Prob. 71PCh. 37 - Prob. 72GPCh. 37 - Prob. 73GPCh. 37 - Prob. 74GPCh. 37 - Prob. 75GPCh. 37 - Prob. 76GPCh. 37 - Prob. 77GPCh. 37 - Prob. 78GPCh. 37 - Prob. 79GPCh. 37 - Prob. 80GPCh. 37 - Prob. 81GPCh. 37 - Prob. 82GPCh. 37 - Prob. 83GPCh. 37 - Prob. 84GPCh. 37 - Prob. 85GPCh. 37 - Prob. 86GPCh. 37 - Prob. 87GPCh. 37 - Prob. 88GPCh. 37 - Prob. 89GPCh. 37 - Prob. 90GPCh. 37 - Prob. 91GPCh. 37 - Prob. 92GPCh. 37 - Prob. 93GPCh. 37 - Show that the wavelength of a particle of mass m...Ch. 37 - Prob. 95GPCh. 37 - Prob. 96GPCh. 37 - Prob. 97GPCh. 37 - Prob. 98GPCh. 37 - Prob. 99GPCh. 37 - Prob. 100GP
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- n = 1 E = -13.6 ev n= 4 E = -0.85 ev n=5 n= 2 E = -0.54 ev E = -3.4 ev n= 3 E = -1.51 ev a) At what wavelength (in meters) does the n = 3 → 2 transition of hydrogen occur?arrow_forwardIf violet light of wavelength 375 nm illuminates a metal, what voltage will completely stop the flow of electrons from the surface?arrow_forward(b) According to Bohr's atomic model, a one-electron system is described by the atomic number Z and the speed vn of the electron at a radius m in the n-th quantum orbit: Z.e² 1 h² €0 Vn = 2.h.Eon rn •N² π ● me e². Z me (i) Calculate the radius and the velocity for the first quantum orbit of the single ionised helium atom. (ii) Calculate the value for the velocity uncertainty, Avx, of the electron in the singly ionised helium atom results, if a spatial uncertainty Ax of the electron is assumed to be the diameter of the first quantum orbit. (iii) Explain the relationship between simultaneous measurements of Bohr's orbit radius and the orbit speed on the first quantum orbit. ●arrow_forward
- (i) How does one explain the emission of electrons from a photosensitive surface with the help of Einstein’s photoelectric equation? (ii) The work function of the following metals is given : Na = 2.75 eV, K = 2.3 eV, Mo = 4.17 eV and Ni 5.15 eV. Which of these metals will not cause photoelectric emission for radiation of wavelength 3300 A from a laser source placed 1 m away from these metals? What happens if the laser source is brought nearer and placed 50 cm away?arrow_forward(c) The energy of an ultraviolet light is 3.28 eV. Tenaga cahaya ultraviolet adalah 3.28 eV. (i) What is its wavelength? (Given: h=6.63×10-34 Js ; e=1.602×10-19 C). Berapakah panjang gelombangnya? (Diberi: h=6.63×10-34 Js ; e=1.602×10-19 C). nm (ii) Based on the de Broglie's hypothesis, determine the velocity of the electron. (Given: h=6.63x10 34 Js ; me=9.11x10 31 kg)arrow_forward(e) Given that the speed of light (v = c/n, were n is the refractive index) in a particular direction is inversely proportional to the linear density of atoms, calculate how much faster light is in the [100] vs the [111] direction in an FCC crystal.arrow_forward
- (a) The Lyman series in hydrogen is the transition from energy levels n = 2, 3, 4, ... to the ground state n = 1. The energy levels are given by 13.60 eV En n- (i) What is the second longest wavelength in nm of the Lyman series? (ii) What is the series limit of the Lyman series? [1 eV = 1.602 x 1019 J, h = 6.626 × 10-34 J.s, c = 3 × 10° m.s] %3D Two emission lines have wavelengts A and + A2, respectively, where AA <<2. Show that the angular separation A0 in a grating spectrometer is given aproximately by (b) A0 = V(d/m)-2 where d is the grating constant and m is the order at which the lines are observed.arrow_forwardAs red light shines on a piece of metal, no electrons arereleased. When the red light is slowly changed to shorterwavelength light (basically progressing through the rainbow),nothing happens until yellow light shines on the metal, atwhich point electrons are released from the metal. If thismetal is replaced with a metal having a higher work function,which light would have the best chance of releasing electrons from the metal?(a) Blue.(b) Red.(c) Yellow would still work fine.(d) We need to know more about the metals involvedarrow_forward16. || At what speed is an electron's de Broglie wavelength (a) 1.0 pm, (b) 1.0 nm, (c) 1.0 um, and (d) 1.0 mm?arrow_forward
- At what velocity will an electron have a wavelength of 1.00 m?arrow_forwardHow does the interference of water waves differ from the interference of electrons? How are they analogous?arrow_forwardList all the possible values of s and msfor an electron. Are there particles for which these values are different? The same?arrow_forward
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