Motion of a Charged Particle: a Pair of Charged Conducting

question 57

Multiple Choice

Motion of a charged particle: A pair of charged conducting plates produces a uniform field of 12,000 N/C, directed to the right, between the plates. The separation of the plates is 40 mm. An electron is projected from plate A, directly toward plate B, with an initial velocity of v_o = 2.0 × 10⁷ m/s, as shown in the figure. (e = 1.60 × 10^-19 C, ε₀ = 8.85 × 10^-12 C²/N ∙ m², m_el = 9.11 × 10^-31 kg) The velocity of the electron as it strikes plate B is closest to

• A) 1.2 × 10⁷ m/s.
• B) 1.5 × 10⁷ m/s.
• C) 1.8 × 10⁷ m/s.
• D) 2.1 × 10⁷ m/s.
• E) 2.4 × 10⁷ m/s.

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Definitions:

Phenotype Frequency

Phenotype frequency refers to the proportion of individuals in a population that exhibit a specific observable trait or phenotype.

Temporal Isolation

A prezygotic reproductive isolating mechanism in which genetic exchange is prevented between similar species because they reproduce at different times of the day, season, or year.

Genetic Exchange

The process by which genetic information is transferred between organisms, leading to variation in genetic makeup.

Diurnal Isolation

Diurnal isolation is a form of reproductive isolation where species may share the same habitat but are active at different times of the day, thus preventing mating.