Physics
Physics
5th Edition
ISBN: 9781260486919
Author: GIAMBATTISTA
Publisher: MCG
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Chapter 2, Problem 52P

(a)

To determine

The speed of the electrons when they hit the screen.

(a)

Expert Solution
Check Mark

Answer to Problem 52P

The speed of the electrons is 1.7×106m/s.

Explanation of Solution

Write the equation of motion according to the Newton’s second law.

vfx2vix2=2axΔx

Here, vfx is the final velocity, vix is the initial velocity along x direction, ax is the acceleration along x direction and Δx is the change in distance.

Here, the initial velocity is 0m/s.

vfx2=2aΔxvfx=2aΔx (I)

Conclusion:

Substitute 7.03×1013m/s2 for ax and 2.0cm for Δx in the equation I to find vfx.

vfx=2(7.03×1013m/s2)(2.0cm×1m102cm)=1.7×106m/s

Therefore, the speed of the electrons is 1.7×106m/s.

(b)

To determine

The time taken for the electrons to travel the length of the tube.

(b)

Expert Solution
Check Mark

Answer to Problem 52P

The time taken for the electrons to travel the length of the tube is 290ns

Explanation of Solution

Write the expression for the equation of motion for constant ax.

Δx=vixΔt+12ax(Δt)2

Here, Δt is the change in time.

For the x from 0 to 2.0cm,

Δx1=12axΔt12Δt12=2Δx1axΔt1=2Δx1ax (II)

For the x from 2.0cm to 47cm,

Δx2=vfxΔt2Δt2=Δx2vfx (III)

Write the expression for the total time.

Δt=Δt1+Δt2 (IV)

Substitute equation II and III in equation IV,

Δt=2Δx1ax+Δx2vfx (V)

Conclusion:

Substitute 2.0cm for Δx1, 7.03×1013m/s2 for ax, 45cm for Δx2 and 1.7×106m/s for vfx in equation V to find Δt.

Δt=2(2.0cm×1m102cm)7.03×1013m/s2+(45cm×1m102cm)1.677×106m/s=290ns

Therefore, the time taken for the electrons to travel the length of the tube is 290ns

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Chapter 2 Solutions

Physics

Ch. 2.4 - Prob. 2.4CPCh. 2.5 - Prob. 2.5CPCh. 2.5 - Prob. 2.6PPCh. 2.5 - Prob. 2.7PPCh. 2.5 - Prob. 2.8PPCh. 2.5 - Prob. 2.9PPCh. 2.6 - Prob. 2.6CPCh. 2.6 - Prob. 2.10PPCh. 2 - Prob. 1CQCh. 2 - Prob. 2CQCh. 2 - Prob. 3CQCh. 2 - Prob. 4CQCh. 2 - Prob. 5CQCh. 2 - Prob. 6CQCh. 2 - Prob. 7CQCh. 2 - Prob. 8CQCh. 2 - Prob. 9CQCh. 2 - Prob. 10CQCh. 2 - Prob. 11CQCh. 2 - Prob. 1MCQCh. 2 - Prob. 2MCQCh. 2 - Prob. 3MCQCh. 2 - Prob. 4MCQCh. 2 - Prob. 5MCQCh. 2 - Multiple-Choice Questions 6–15. A jogger is...Ch. 2 - 7. What is the displacement of the jogger for the...Ch. 2 - Prob. 8MCQCh. 2 - Prob. 9MCQCh. 2 - Multiple-Choice Questions 6–15. A jogger is...Ch. 2 - Prob. 11MCQCh. 2 - Prob. 12MCQCh. 2 - Prob. 13MCQCh. 2 - Prob. 14MCQCh. 2 - Prob. 15MCQCh. 2 - Prob. 16MCQCh. 2 - Prob. 17MCQCh. 2 - Prob. 18MCQCh. 2 - Prob. 19MCQCh. 2 - 20. Which graph shows a changing ax that is always...Ch. 2 - Prob. 21MCQCh. 2 - Prob. 22MCQCh. 2 - Prob. 23MCQCh. 2 - Prob. 24MCQCh. 2 - Prob. 25MCQCh. 2 - Prob. 26MCQCh. 2 - Prob. 27MCQCh. 2 - Prob. 28MCQCh. 2 - Prob. 29MCQCh. 2 - Prob. 30MCQCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 16PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 22PCh. 2 - Prob. 19PCh. 2 - 21. The graph shows x(t) for a skater traveling...Ch. 2 - 22. The graph shows x(t) for an object traveling...Ch. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 35PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 32PCh. 2 - 36. The graph with Problem 10 shows speedometer...Ch. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Prob. 49PCh. 2 - Prob. 50PCh. 2 - Prob. 51PCh. 2 - Prob. 52PCh. 2 - Prob. 53PCh. 2 - Prob. 54PCh. 2 - Prob. 55PCh. 2 - Prob. 56PCh. 2 - Prob. 57PCh. 2 - Prob. 58PCh. 2 - Prob. 59PCh. 2 - Prob. 60PCh. 2 - Prob. 61PCh. 2 - Prob. 62PCh. 2 - Prob. 63PCh. 2 - Prob. 64PCh. 2 - Prob. 65PCh. 2 - Prob. 71PCh. 2 - Prob. 66PCh. 2 - Prob. 67PCh. 2 - Prob. 68PCh. 2 - Prob. 69PCh. 2 - Prob. 70PCh. 2 - Prob. 72PCh. 2 - Prob. 73PCh. 2 - Prob. 74PCh. 2 - Prob. 75PCh. 2 - Prob. 76PCh. 2 - Prob. 77PCh. 2 - Prob. 78PCh. 2 - Prob. 79PCh. 2 - Prob. 80PCh. 2 - Prob. 81PCh. 2 - Prob. 82PCh. 2 - Prob. 83PCh. 2 - Prob. 84PCh. 2 - Prob. 85PCh. 2 - Prob. 86P
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