College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Chapter 28, Problem 61GP
To determine
The radius of the orbit and the assumption taken to calculate it when a uranium atom with
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What electrostatic force acts between two protons in a nucleus if they are 4×10-15 m apart?
Select one:
O a. 8.8x109 (attractive)
O b. 8.8×10 (repulsive)
O c. 14N (repulsive)
O d. 14N (attractive)
If the nucleus is a few fm in diameter, the distance between the centers of two protons must be ≈2 fm.a. Calculate the repulsive electric force between two protons that are 2.0 fm apart.b. Calculate the attractive gravitational force between two protons that are 2.0 fm apart. Could gravity be the force that holds the nucleus together?
Determine the electrical potential energy of the protons in a nucleus if it is assumed that the charge
is uniformly spherically distributed.
and compare this with the form of the coulomb term in the liquid drop model.
SW - ac z Z(1-Z)
Chapter 28 Solutions
College Physics
Ch. 28 - Prob. 1RQCh. 28 - Prob. 2RQCh. 28 - Prob. 3RQCh. 28 - Prob. 4RQCh. 28 - Prob. 5RQCh. 28 - Prob. 6RQCh. 28 - Prob. 7RQCh. 28 - Prob. 8RQCh. 28 - Prob. 1MCQCh. 28 - Prob. 2MCQ
Ch. 28 - Prob. 3MCQCh. 28 - Prob. 4MCQCh. 28 - Prob. 5MCQCh. 28 - Prob. 6MCQCh. 28 - Prob. 7MCQCh. 28 - Prob. 8MCQCh. 28 - Prob. 9MCQCh. 28 - Prob. 10MCQCh. 28 - Prob. 11MCQCh. 28 - Prob. 12MCQCh. 28 - Prob. 13CQCh. 28 - Prob. 14CQCh. 28 - Prob. 15CQCh. 28 - Prob. 16CQCh. 28 - Prob. 17CQCh. 28 - Prob. 18CQCh. 28 - Prob. 19CQCh. 28 - Prob. 20CQCh. 28 - Prob. 21CQCh. 28 - Prob. 22CQCh. 28 - Prob. 23CQCh. 28 - Prob. 24CQCh. 28 - Prob. 25CQCh. 28 - Prob. 26CQCh. 28 - Prob. 27CQCh. 28 - Prob. 28CQCh. 28 - Prob. 29CQCh. 28 - Prob. 30CQCh. 28 - Prob. 31CQCh. 28 - Prob. 32CQCh. 28 - Prob. 33CQCh. 28 - Prob. 34CQCh. 28 - Prob. 1PCh. 28 - Prob. 2PCh. 28 - Prob. 3PCh. 28 - Prob. 4PCh. 28 - Prob. 5PCh. 28 - Prob. 6PCh. 28 - Prob. 7PCh. 28 - Prob. 8PCh. 28 - Prob. 9PCh. 28 - Prob. 10PCh. 28 - Prob. 11PCh. 28 - Prob. 12PCh. 28 - Prob. 13PCh. 28 - Prob. 14PCh. 28 - Prob. 15PCh. 28 - Prob. 16PCh. 28 - Prob. 17PCh. 28 - Prob. 18PCh. 28 - Prob. 19PCh. 28 - Prob. 20PCh. 28 - Prob. 21PCh. 28 - Prob. 22PCh. 28 - 28.4 Lasers (a) A laser pulse emits 2.0 J of...Ch. 28 - Prob. 24PCh. 28 - Prob. 25PCh. 28 - Prob. 26PCh. 28 - Prob. 27PCh. 28 - Prob. 28PCh. 28 - Prob. 29PCh. 28 - Prob. 30PCh. 28 - Prob. 31PCh. 28 - Prob. 32PCh. 28 - Prob. 33PCh. 28 - Prob. 34PCh. 28 - Prob. 35PCh. 28 - Prob. 36PCh. 28 - Prob. 37PCh. 28 - Prob. 38PCh. 28 - Prob. 39PCh. 28 - Prob. 40PCh. 28 - Prob. 41PCh. 28 - Prob. 42PCh. 28 - Prob. 43PCh. 28 - Prob. 44PCh. 28 - Prob. 45PCh. 28 - Prob. 46PCh. 28 - Prob. 47PCh. 28 - Prob. 48PCh. 28 - Prob. 49PCh. 28 - Prob. 50PCh. 28 - Prob. 51PCh. 28 - Prob. 52PCh. 28 - Prob. 53PCh. 28 - Prob. 54PCh. 28 - Prob. 55PCh. 28 - Prob. 56PCh. 28 - Prob. 57PCh. 28 - Prob. 58PCh. 28 - Prob. 59GPCh. 28 - Prob. 60GPCh. 28 - Prob. 61GPCh. 28 - Prob. 62GPCh. 28 - Prob. 63GPCh. 28 - Prob. 64GPCh. 28 - Prob. 65GPCh. 28 - Prob. 66GPCh. 28 - Prob. 67GPCh. 28 - Prob. 68RPPCh. 28 - Prob. 69RPPCh. 28 - Prob. 70RPPCh. 28 - Prob. 71RPPCh. 28 - Prob. 72RPPCh. 28 - Prob. 73RPPCh. 28 - Prob. 74RPPCh. 28 - Prob. 75RPPCh. 28 - Prob. 76RPPCh. 28 - Prob. 77RPPCh. 28 - Prob. 78RPP
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Similar questions
- (a) An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. If the atom is 1.00 m in diameter, how big should she try to make the nucleus? (b) How easy will this be to do?arrow_forwardRutherford fired a beam of alpha particles (helium nuclei) at a thin sheet of gold. An alpha particle was observed to be deflected by 90.0; its speed was unchanged. The alpha particles used in the experiment had an initial speed of 2 107 m/s and a mass of 6.7 1027 kg. Assume the alpha particle collided with a gold nucleus that was initially at rest. Find the speed of the nucleus after the collision.arrow_forward(a) What voltage must be applied to an X-ray tube to obtain 0.0100-fm-wavelength X-rays for use in exploring the details of nuclei? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?arrow_forward
- The force on an electron is “negative the gradient of the potential energy function.” Use this knowledge and Equation 8.1 to show that the force on the electron in a hydrogen atom is given by Coulomb’s force law. Ur=ke2r(8.1)arrow_forward3. Draw a graph showing how the potential energy changes when two protons approach each other and fuse to form deuterium. We will be drawing this graph in two parts! a. Explain how the PE changes in terms of forces where the electromagnetic force is in operation (about 10-14 to 10-13 m). Draw just the part of the graph where the electromagnetic force is in operation (about 10-14 to 10-13 m). Put PE on the Y axis and distance on the X axis. b. Explain how the PE changes in terms of forces when the strong nuclear force comes into operation (smaller than 10-14 m). Now just draw the part of the graph showing what happens when the strong nuclear force comes into operation (smaller than 10-14 m).arrow_forwardTwo protons in the nucleus of a 238U atom are 6.0 fm (6.0x10-15m) apart. What is the potential energy (in joules) associated with the electric force that acts between these two particles? A.2.8x10-14 B. 3.8x1014 C. 5.0x10-9 D. 5.0x10-8arrow_forward
- Which of the following is not true of BohrOs atomic model? O The electron in the orbit nearest to the nucleus has the lowest energy. O The Coulomb force between the nucleus and the electron maintains the electron in orbit. h O The angular momentum of an electron in the allowed orbit is equal to an integral multiple of O Radiation is emitted when an electron orbits in the allowed orbit.arrow_forward10) Now you have a nucleus with 13 protons at x = 6.2 Angstroms on the x-axis. How much work would it take to bring in ANOTHER nucleus with 7 protons from 1 m away and place it at y = 8.0 Angstroms on the y-axis? 70.0 eV 116.7 eV -12.6 eV 129.3 eVarrow_forward18 The nuclear atom model put forward by Ernest Rutherfort is Rutherford's model on a thin gold plate. It is based on the observation of the scattering behavior of the transmitted alpha particles. Accordingly, given which one is wrong? a) The positively charged protons inside the atom are concentrated in the nucleus. B) Most of the alpha particles are backscattered after hitting the gold plate. NS) Few of the positively charged alpha particles hit the gold plate and are scattered back at a large angle. D) Most of the positively charged alpha particles passed through the gold plate without any scattering. TO) The nucleus, where the protons are together, occupies a very small volume.arrow_forward
- QUESTION 9 In the picture are two diagrams of the first five orbits in the Bohr model labeled A - E. The dot in an orbit is the electron. The nucleus is not shown. Shown is a BEFORE and AFTER state of the atom. An energy level diagram for the Bohr hydrogen atom is shown. Which of these events has occurred in going from the BEFORE to the AFTER state? a. a photon of energy 1.51 eV has been absorbed b. an electron of energy 1.51 eV has been emitted c. a photon of energy 0.97 eV has been emitted d. a photon of energy 1.51 eV has been emitted e. a photon of energy 0.97 eV has been absorbedarrow_forward7) no handwritten, only typing..arrow_forwardb. Why is the final product a helium atom? Explain.arrow_forward
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