Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 26, Problem 14Q
To determine
The possibility of a single hydrogen atom to be created as a virtual pair consisting of a positively charged proton and a negatively charged electron.
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What is the gravitational attraction between the proton and electron in an Hydrogen atom if they are 5.3 x 10-11 meters apart? (mproton = 1.67 x 10-27 kg; melectron = 9.11x10-31 kg)
Do the Paramecium show any signs of being electrically charged? If so, do they carry a positive or a negative charge? Explain.
Consider (Figure 1) showing a proton approaching a
helium-3 nucleus that has two protons and one neutron.
Figure
1 of 1
Proton
Helium-3 nucleus
Initial
9= +2e
Зт
9 = +e
m
To = 0
v = 0
Final (the proton is at rest)
Chapter 26 Solutions
Universe: Stars And Galaxies
Ch. 26 - Prob. 1QCh. 26 - Prob. 2QCh. 26 - Prob. 3QCh. 26 - Prob. 4QCh. 26 - Prob. 5QCh. 26 - Prob. 6QCh. 26 - Prob. 7QCh. 26 - Prob. 8QCh. 26 - Prob. 9QCh. 26 - Prob. 10Q
Ch. 26 - Prob. 11QCh. 26 - Prob. 12QCh. 26 - Prob. 13QCh. 26 - Prob. 14QCh. 26 - Prob. 15QCh. 26 - Prob. 16QCh. 26 - Prob. 17QCh. 26 - Prob. 18QCh. 26 - Prob. 19QCh. 26 - Prob. 20QCh. 26 - Prob. 21QCh. 26 - Prob. 22QCh. 26 - Prob. 23QCh. 26 - Prob. 24QCh. 26 - Prob. 25QCh. 26 - Prob. 26QCh. 26 - Prob. 27QCh. 26 - Prob. 28QCh. 26 - Prob. 29QCh. 26 - Prob. 30QCh. 26 - Prob. 31QCh. 26 - Prob. 32QCh. 26 - Prob. 33QCh. 26 - Prob. 34QCh. 26 - Prob. 35QCh. 26 - Prob. 36QCh. 26 - Prob. 37QCh. 26 - Prob. 38QCh. 26 - Prob. 39QCh. 26 - Prob. 40QCh. 26 - Prob. 41QCh. 26 - Prob. 42QCh. 26 - Prob. 43QCh. 26 - Prob. 44QCh. 26 - Prob. 45QCh. 26 - Prob. 46QCh. 26 - Prob. 47Q
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- The force that acts between the electron and nucleus of an atom is the same force that keeps the planets in their orbits. True O Falsearrow_forwardDetermine the distance between the electron and proton in an atom if the potential energy U of the electron is 13.8 ev (electronvolt, 1 eV -19 1.6 x 10 J). Give your answer in Angstrom (1 A = 10"1º m). Answer: Choose... + Next pagearrow_forwardDetermine the distance between the electron and proton in an atom if the potential energy U of the electron is 13.8 ev (electronvolt, 1 eV = 1.6 × 10-19 J). Give your answer in Angstrom (1 A = 10-10 m). Answer: Choose... + Previous pagearrow_forward
- Using the given charge-to-mass ratios for electrons and protons, and knowing the magnitudes of their charges are equal, what is the ratio of the proton's mass to the electron's? (The charge-to-mass ratios for electrons and protons are −1.7588×1011 C/kg and 9.5788e7 C/kg , respectively. Note that since the charge-to-mass ratios are given to five-digit accuracy, your answer may differ from the accepted ratio. Round your answer to at least five significant figures.) Mp/Me =arrow_forwardA proton, which is the nucleus of a hydrogen atom, can be modeled as a sphere with a diameter of 2.4 fm and a mass of 1.67 10-27 kg. Determine the density of the proton (kg/m^3)arrow_forwardChoose the correct spherical polar coordinates for the following figures: = (i) r=2, 3 (ii) (i) r=2, 3 z=3 (iii) 6= 8= 3 (ii) 3.2-3 (iii) (i) r=2,- (i) 6 = 3,2-3 (iii) 0- 6= 5x 小 4 411 14 # 16 DOLL S 4支 % 5€ 4 包arrow_forward
- 7. The spherical nucleus of a cer- tain atom contains a positive charge Ze in a volume of radius R. Compare the force exerted on an electron inside the nucleus at ra- dius 0.5R with the force at radius R for a nucleus in which (a) the charge density is constant throughout its volume, and (b) the charge density increases in direct proportion to the radius r.arrow_forwardCoulomb constant, k = 8.987 x 10° N · m2 /C2. Vacuum permitivity, €n = 8.854 x 10 12 F/m. Magnitude of the charge of the electron, e = -1.60217662 x 10-19 C. Mass of the electron, me = 9.10938356 x 10 31 kg. Unless specified otherwise, each symbol carries their usual meaning. For example, uC means micro coulomb. +Y ↑ +x Coordinates of three charges in a 2D plane is given as follows: q1 = -42 µC at p1 = (-9,14), q2 = 21 µC at p2 = (-13,17) and q3 = -30 pC at p3 = (-9, -20). These coordinates are given in centimeters. c) Compute force on qi due to q2. x component of the force Give your answer to at least three significance digits. y component of the force Give your answer to at least three significance digits. d) Compute force on q due to q3- z component of the force Give your answer to at least three significance digits. y component of the force Give your answer to at least three significance digits. N e) Compute net force on qi due to q2 and q3. You can use the superposition principle…arrow_forward2. An electron is to be accelerated in a uniform electric field of 4 µC V/m. (a) What energy is given to the electrons if it is accelerated through 0.200 m. (b) Over what distance would it have to be accelerated to increase its energy by 40.0 GeV? 1 GeV = 10° eV %3Darrow_forward
- 2. The nucleus in an iron atom has a radius of about 4.0×10-15 m and contains 26 protons. (i) What is the magnitude of the repulsive electrostatic force between two of the protons that are separated by 4.0×10-15 m? (b) What is the magnitude of the gravitational force between those same two protons? [Given, e = +1.6x10-19 C and mp=1.67x1027 kg] 2.5arrow_forwardCalculate the theoretical value of e/m using the known values of the electric charge and electron mass (both of which you can look up in a textbook).arrow_forwardAn electron revolves around the nucleus of an atom in a circular orbit of radius 4.0Å with a speed of 6.0 x 10^6 ms-1. Calculate the linear kinetic energy.arrow_forward
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