A positron (the electron's antiparticle) has mass 9.11 × 10¬3' kg and charge qo = +e = +1.60 × 10-19 C. Suppose a positron moves in the vicinity of an a (alpha) particle, which has charge q = +2e = 3.20–× 10-19 C and mass 6.64 × 10-27 kg. The a particle's mass is more than 7000 times that of the positron, so we assume that the a particle remains at rest. When the positron is 1.00 × 10¬10 m from the a particle, it is moving directly away from the a particle at 3.00 × 10° m/s. (a) What is the positron's speed when the particles are 2.00 × 10-1º m- apart? (b) What is the positron's speed when it is very far from the a particle?
A positron (the electron's antiparticle) has mass 9.11 × 10¬3' kg and charge qo = +e = +1.60 × 10-19 C. Suppose a positron moves in the vicinity of an a (alpha) particle, which has charge q = +2e = 3.20–× 10-19 C and mass 6.64 × 10-27 kg. The a particle's mass is more than 7000 times that of the positron, so we assume that the a particle remains at rest. When the positron is 1.00 × 10¬10 m from the a particle, it is moving directly away from the a particle at 3.00 × 10° m/s. (a) What is the positron's speed when the particles are 2.00 × 10-1º m- apart? (b) What is the positron's speed when it is very far from the a particle?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Solve the folllowing question of the word problem use the "Game plan" as a guide to answer/solve the problem.
Transcribed Image Text:A positron (the electron's antiparticle) has mass 9.11 × 10-31 kg
and charge qo = +e = +1.60 × 10-19 C. Suppose a positron
moves in the vicinity of an a (alpha) particle, which has charge
q = +2e = 3.20× 10-19 C and mass 6.64 × 10-27 kg. The a
particle's mass is more than 7000 times that of the positron, so we
assume that the a particle remains at rest. When the positron is
1.00 × 10¬10 m from the a particle, it is moving directly away
from the a particle at 3.00 × 10° m/s. (a) What is the positron's
speed when the particles are 2.00 × 10-10 m apart? (b) What is
the positron's speed when it is very far from the a particle?
%3D
Transcribed Image Text:OUR GAME PLAN
- 1. solve for v (K, = ½ mv²)
2. solve for Kafter (K,+U,=Kµ+U»)
3. solve for K, (K = ½ mv2)
4. solve for U, U, (U = k )
%3D
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