Can you please solve problem 4, thanks! *VelocitypPositronElectron&Direction of motion8. What is the total angular momentum about the center of the positronium atom inProblem 7?9. What is the force on the electron due to the positron? (Give both magnitude anddirection.)10. What is the electric potential energy of the positronium atom? Some Simple Problems from Chapter 22WuName: DumonDUE: Sept. 9, 2022 by 12 p.m.1. What must be the magnitude of a uniform electric field, in order that an electroninitially at rest gets an acceleration of 2x10¹2 m/s2? If the electron is initially atNrest how long will it take to get a speed of 5x106 m/s? Ans. in MKSA: 11.42.5x10-6 s2. By how much will the acceleration due to gravity be changed for a charged massof 5 g falling downward towards the surface of the earth? The mass is chargedwith a charge of 4x10-8 C. The magnitude of the electric field on the surface ofthe earth is 100 N/C. Ans. in MKSA: (a-g) = 0.8x10-³m2S3. At 2 opposite vertices of a square with sides of length a = 50 cm are locatedidentical positive charges each of charge 108 esu and at the third vertex is a chargeof the same magnitude but opposite sign. Calculate the magnitude of the electricfield at the fourth vertex. Ans. in MKSA: E=(2√2-1)2a²4. At the vertices of a hexagon with sides of length, a, are located charges identicalin magnitude but with charges at successive vertices alternating in sign. Calculatethe magnitude of the electric field at the center of the hexagon.5. Consider the proton to be a tiny, thin spherical shell of radius Ro, mass mp andcharge e. Assume that the charge and the mass of the proton are uniformlydistributed over the shell. Calculate the escape velocity of the electron which islocated just above the surface of the shell.6. Repeat problem 5 assuming that the charge and the mass of the proton areuniformly distributed throughout the volume inside the sphere of radius Ro.7. Determine the velocity of the electron in a positronium atom which is shown inthe figure. Assume the radius of the positronium atom is 2 x 5.3 x 10 cm

Answered: Image /qna-images/answer/a4ec771c-a8f7-4673-b3ee-5c2c29a91770.jpg

4. At the vertices of a hexagon with sides of length, a, are located charges identical in magnitude but with charges at successive vertices alternating in sign. Calculate the magnitude of the electric field at the center of the hexagon.

4. At the vertices of a hexagon with sides of length, a, are located charges identical in magnitude but with charges at successive vertices alternating in sign. Calculate the magnitude of the electric field at the center of the hexagon.

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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Question

Can you please solve problem 4, thanks!

*
Velocity
p
Positron
Electron
&
Direction of motion
8. What is the total angular momentum about the center of the positronium atom in
Problem 7?
9. What is the force on the electron due to the positron? (Give both magnitude and
direction.)
10. What is the electric potential energy of the positronium atom?

Some Simple Problems from Chapter 22
Wu
Name: Dumon
DUE: Sept. 9, 2022 by 12 p.m.
1. What must be the magnitude of a uniform electric field, in order that an electron
initially at rest gets an acceleration of 2x10¹2 m/s2? If the electron is initially at
N
rest how long will it take to get a speed of 5x106 m/s? Ans. in MKSA: 11.4
2.5x10-6 s
2. By how much will the acceleration due to gravity be changed for a charged mass
of 5 g falling downward towards the surface of the earth? The mass is charged
with a charge of 4x10-8 C. The magnitude of the electric field on the surface of
the earth is 100 N/C. Ans. in MKSA: (a-g) = 0.8x10-³
m
2
S
3. At 2 opposite vertices of a square with sides of length a = 50 cm are located
identical positive charges each of charge 108 esu and at the third vertex is a charge
of the same magnitude but opposite sign. Calculate the magnitude of the electric
field at the fourth vertex. Ans. in MKSA: E=(2√2-1)
2a²
4. At the vertices of a hexagon with sides of length, a, are located charges identical
in magnitude but with charges at successive vertices alternating in sign. Calculate
the magnitude of the electric field at the center of the hexagon.
5. Consider the proton to be a tiny, thin spherical shell of radius Ro, mass mp and
charge e. Assume that the charge and the mass of the proton are uniformly
distributed over the shell. Calculate the escape velocity of the electron which is
located just above the surface of the shell.
6. Repeat problem 5 assuming that the charge and the mass of the proton are
uniformly distributed throughout the volume inside the sphere of radius Ro.
7. Determine the velocity of the electron in a positronium atom which is shown in
the figure. Assume the radius of the positronium atom is 2 x 5.3 x 10 cm

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