(II) The liquid-drop model of the nucleus suggests that high-energy oscillations of certain nuclei can split (“fission”) a large nucleus into two unequal fragments plus a few neutrons. Using this model, consider the ease of a uranium nucleus fissioning into two spherical fragments, one with a charge q 1 = +38 e and radius r 1 = 5.5 × 10 -15 m, the other with q 2 = +54 e and r 2 = 6.2 × 10 -15 m. Calculate the electric potential energy (MeV) of these fragments, assuming that the charge is uniformly distributed throughout the volume of each spherical nucleus and that their surfaces are initially in contact at rest. The electrons surrounding the nuclei can be neglected. This electric potential energy will then be entirely converted to kinetic energy as the fragments repel each other. How does your predicted kinetic energy of the fragments agree with the observed value associated with uranium fission (approximately 200 MeV total)? [l MeV = 10 6 eV.]
(II) The liquid-drop model of the nucleus suggests that high-energy oscillations of certain nuclei can split (“fission”) a large nucleus into two unequal fragments plus a few neutrons. Using this model, consider the ease of a uranium nucleus fissioning into two spherical fragments, one with a charge q 1 = +38 e and radius r 1 = 5.5 × 10 -15 m, the other with q 2 = +54 e and r 2 = 6.2 × 10 -15 m. Calculate the electric potential energy (MeV) of these fragments, assuming that the charge is uniformly distributed throughout the volume of each spherical nucleus and that their surfaces are initially in contact at rest. The electrons surrounding the nuclei can be neglected. This electric potential energy will then be entirely converted to kinetic energy as the fragments repel each other. How does your predicted kinetic energy of the fragments agree with the observed value associated with uranium fission (approximately 200 MeV total)? [l MeV = 10 6 eV.]
(II) The liquid-drop model of the nucleus suggests that high-energy oscillations of certain nuclei can split (“fission”) a large nucleus into two unequal fragments plus a few neutrons. Using this model, consider the ease of a uranium nucleus fissioning into two spherical fragments, one with a charge q1 = +38e and radius r1= 5.5 × 10-15m, the other with q2 = +54e and r2 = 6.2 × 10-15m. Calculate the electric potential energy (MeV) of these fragments, assuming that the charge is uniformly distributed throughout the volume of each spherical nucleus and that their surfaces are initially in contact at rest. The electrons surrounding the nuclei can be neglected. This electric potential energy will then be entirely converted to kinetic energy as the fragments repel each other. How does your predicted kinetic energy of the fragments agree with the observed value associated with uranium fission (approximately 200 MeV total)? [l MeV = 106eV.]
When the nucleus of uranium-235 (92 protons and 143 neutrons) absorbs an additional neutron, it undergoes a process called nuclear fission in which it breaks into two smaller nuclei. One possible fission is for uranium nucleus to divide into two palladium nuclei, each of which has 46 protons and 5.9 x 10−15 m in radius. The palladium nuclei then fly apart (their separation if essentially infinite) due to their electric repulsion. If (immediately after the fission) we assume that the palladium nuclei are at rest and are just touching each other, what is their combined kinetic energy when they are very far apart? [Hint: Use the conservation of mechanical energy equation.]
(b)Consider two charges of charge -3e-09 C nailed in place on the y-axis straddling the origin (one charge 0.006 m above the origin and one charge 0.006 m below the origin). A proton is at the origin and it is launched directly to the right (along the x-axis).
i.What is the escape speed (in m/s) of the proton (middle charge)? (Again, assume the two outer charges are fixed in place)
a)1.14e+06 b)4.28e+06 c)5.12e+05 d)1.97e+06 e)1.31e+06 f)2.77e+06
ii.If the proton (middle charge) is launch with half of the escape speed, how far away (in m) from its starting point will it stop and turn around?
a)0.00794 b)0.00460 c)0.0112 d)0.0173 e)0.00529 f)0.00206
Please answer both parts kindly, i will highly appreciate it!
(13)
Particles 1 and 2 have the same magnitude of charge but opposite in
-q2 = 7.36 nC. However, mı > m2
sign: q1
14.9 µg such that particle
1 can be regarded as stationary in their electrical interaction. Suppose that
they are initially separated by a distance of 1.71 cm. The magnitude of
the escape velocity of particle 2 needed to escape from the pull of particle
1 to infinity is most nearly
(A) 87.5 m/s.
(B) 61.9 m/s.
(C) 75.8 m/s.
(D) 43.7 m/s.
(E) 30.9 m/s.
Chapter 23 Solutions
Physics for Science and Engineering With Modern Physics, VI - Student Study Guide
Genetic Analysis: An Integrated Approach (3rd Edition)
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