Is the particle an electron or a proton? What is its speed just as it reaches plate 2?

Physics for Scientists and Engineers: Foundations and Connections
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Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter26: Electric Potential
Section: Chapter Questions
Problem 16PQ: Four charged particles are at rest at the corners of a square (Fig. P26.14). The net charges are q1...
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In the figure below, a charged particle either an electron or a proton-is moving rightward
between two parallel charged plates separated by distance d = 2.00 mm (1 mm = 10-3 m).
The plate potentials are V₁ = -70.0 V and V₂ = -50.0 V. The particle is slowing down from
an initial speed of 90.0 km/s at the left plate.
a. Is the particle an electron or a proton?
b. What is its speed just as it reaches plate 2?
V₁
-d-
V/₂
Transcribed Image Text:In the figure below, a charged particle either an electron or a proton-is moving rightward between two parallel charged plates separated by distance d = 2.00 mm (1 mm = 10-3 m). The plate potentials are V₁ = -70.0 V and V₂ = -50.0 V. The particle is slowing down from an initial speed of 90.0 km/s at the left plate. a. Is the particle an electron or a proton? b. What is its speed just as it reaches plate 2? V₁ -d- V/₂
Expert Solution
Step 1

Given:

The potential at left plate is V1=-70 V

The potential at right plate is V2=-50 V

Distance between plates is d=2 mm

A particle is moving rightward between the plates.

Initial speed of particle is 90 km/s

Particle is slowing down as it is moving towards right plate.

Note:

1 mm=10-3 m

1 km=1000 m

Find:

(a) Is particle is electron or proton?

(b) Particle's speed just as it reaches the right plate.

 

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