A Charge of 50-μC Is Placed on the Y Axis

question 31

Multiple Choice

A charge of 50-μC is placed on the y axis at y = 3.0 cm and a 77-μC charge is placed on the x axis at x = 4.0 cm. If both charges are held fixed, what is the magnitude of the initial acceleration of an electron released from rest at the origin?

• A) 1.2 × 10²⁰ m/s²
• B) 1.5 × 10²⁰ m/s²
• C) 1.0 × 10²⁰ m/s²
• D) 1.8 × 10²⁰ m/s²
• E) 2.0 × 10²⁰ m/s²

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Definitions:

Nucleosomes

Repeating units of chromatin structure, each consisting of a length of DNA wound around a complex of eight histone molecules. Adjacent nucleosomes are connected by a DNA linker region associated with another histone protein.

Scaffolding Proteins

Nonhistone proteins that help maintain the structure of a chromosome.

Pericentriolar Material

Fibrils surrounding the centrioles in the microtubule-organizing centers in cells of animals and other organisms having centrioles.

Fibrils

Thin, elongated threads found in cells, often made of proteins, contributing to the structure and function of cells.