An Electron Is Projected Horizontally with a Speed of 5

question 79

Multiple Choice

An electron is projected horizontally with a speed of 5.0 × 10⁶ m exactly in the middle of two parallel plates at potentials of −40 V and 104 V, respectively. The plate separation is 3.0 cm. The plates are long enough that the electron, rather than passing completely between the plates, eventually strikes the plate sitting at 104 V potential. What is the speed of the electron when it strikes the plate? The mass of the electron is 9.11 × 10⁻³¹ kg.

• A) 8.7 × 10⁶ m/s
• B) 7.1 × 10⁶ m/s
• C) 6.0 × 10⁶ m/s
• D) 5.0 × 10⁶ m/s

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Definitions:

Meiosis I

The first division in meiosis, a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, important for sexual reproduction.

Meiosis II

The second division in meiosis, where the two cells produced in Meiosis I divide again without DNA replication, resulting in four haploid cells.

Meiotic Divisions

Meiotic divisions are the process of cell division in sexually reproducing organisms that reduces the chromosome number by half, resulting in the production of haploid reproductive cells.

Haploid Daughter Cells

Cells resulting from meiosis that have half the genetic material (chromosomes) of the parent cell, essential for sexual reproduction.