has the3. A positron (the antiparticle of the electron)same mass as an electron(9.11×10-³¹ kg) but the opposite charge, +e= +1.602×10-¹9 C. Suppose a positrormoves in the vicinity of an alpha particle,which has a charge +2e = 3.204×10-¹⁹ C.The alpha particle is over 7000 times asmassive as the positron, so we assume thatit is at rest in some inertial frame ofreference. When the positron is 1.00×10-¹⁰m from the alpha particle, it is movingdirectly away from the alpha particle at aspeed of 3.00×10⁰ m/s.a) What is the positron's speed when thetwo particles are 2.00×10-¹0 m apart?b) What is the positron's speed when it isvery far away from the alpha particle?c) Repeat a) after replacing the positronwith an electron.d) Repeat b) after replacing the positronwith an electron. The result here tellsyou whether the electron willeventually turn around and headtoward the alpha particle. Will theelectron turn around? If so, at whatdistance away does it turn around (i.e.,momentarily come to rest)? If not,why?

Answered: Image /qna-images/answer/42a6283a-d642-4ef6-800a-f7b1565d3ebd.jpg

A positron (the antiparticle of the electron) has the same mass as an electron (9.11×10-³¹ kg) but the opposite charge, +e +1.602×10-¹⁹ C. Suppose a positror moves in the vicinity of an alpha particle, which has a charge +2e = 3.204×10-¹⁹ C. The alpha particle is over 7000 times as massive as the positron, so we assume that it is at rest in some inertial frame of reference. When the positron is 1.00×10-¹⁰ m from the alpha particle, it is moving directly away from the alpha particle at a speed of 3.00×106 m/s. = a) What is the positron's speed when the two particles are 2.00×10-¹0 m apart? b) What is the positron's speed when it is very far away from the alpha particle? c) Repeat a) after replacing the positron with an electron.

A positron (the antiparticle of the electron) has the same mass as an electron (9.11×10-³¹ kg) but the opposite charge, +e +1.602×10-¹⁹ C. Suppose a positror moves in the vicinity of an alpha particle, which has a charge +2e = 3.204×10-¹⁹ C. The alpha particle is over 7000 times as massive as the positron, so we assume that it is at rest in some inertial frame of reference. When the positron is 1.00×10-¹⁰ m from the alpha particle, it is moving directly away from the alpha particle at a speed of 3.00×106 m/s. = a) What is the positron's speed when the two particles are 2.00×10-¹0 m apart? b) What is the positron's speed when it is very far away from the alpha particle? c) Repeat a) after replacing the positron with an electron.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter5: Relativity

Section: Chapter Questions

Problem 100AP: A positron is an antimatter version of the electron, having exactly the same mass. When a positron...

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