How many electrons strike the screen each second? 2.94-104 electrons The electron beam inside a television picture tube is 0.300 mm in diameter and carries a current of 47.0 uA. This electron beam impinges on the inside of the picture tube screen. Submit Previous Answers v Correct • Part B What is the current density in the electron beam? VO AE A/m Submit Previous Answers Reasest Answer X Incorrect; Try Again; 3 attempts remaining Review your calculations and make sure you round to 3 significant figures in the last step. • Part C The electrons move with a velocity of 3.90 x10 m/s. What electric field strength is needed to accelerate electrons from rest to this velocity in a distance of 5.80 mm ? N/C Submit Resuest Answer • Part D Each electron transfers its kinetic energy to the picture tube screen upon impact. What is the power delivered to the screen by the electron beam? 0.2734 Submit Previous Answer Reauest Answer Y Incorreet: Tou Againı 6 attempte remaining

How many electrons strike the screen each second? 2.94-104 electrons The electron beam inside a television picture tube is 0.300 mm in diameter and carries a current of 47.0 uA. This electron beam impinges on the inside of the picture tube screen. Submit Previous Answers v Correct • Part B What is the current density in the electron beam? VO AE A/m Submit Previous Answers Reasest Answer X Incorrect; Try Again; 3 attempts remaining Review your calculations and make sure you round to 3 significant figures in the last step. • Part C The electrons move with a velocity of 3.90 x10 m/s. What electric field strength is needed to accelerate electrons from rest to this velocity in a distance of 5.80 mm ? N/C Submit Resuest Answer • Part D Each electron transfers its kinetic energy to the picture tube screen upon impact. What is the power delivered to the screen by the electron beam? 0.2734 Submit Previous Answer Reauest Answer Y Incorreet: Tou Againı 6 attempte remaining

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

How many electrons strike the screen each second?
2.94x1014 electrons
The electron beam inside a television picture tube is 0.300 mm in diameter and carries a current of 47.0
µA. This electron beam impinges on the inside of the picture tube screen.
Submit
Previous Answers
v Correct
Part B
What is the current density in the electron beam?
Eνα ΑΣφ
A/m²
Submit
Previous Answers Request Answer
X Incorrect; Try Again; 3 attempts remaining
Review your calculations and make sure you round to 3 significant figures in the last step.
Part C
The electrons move with a velocity of 3.90 x107 m/s. What electric field strength is needed to accelerate electrons from rest to this velocity in a distance of 5.80 mm ?
?
N/C
Submit
Request Answer
Part D
Each electron transfers its kinetic energy to the picture tube screen upon impact. What is the power delivered to the screen by the electron beam?
να ΛΣφ.
?
0.2734
Submit
Previous Answers Request Answer
X Incorrect; Try Again; 5 attempts remaining

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