A CD Has a Diameter of 12

question 42

Multiple Choice

A CD has a diameter of 12.0 cm. If the CD starts from rest and has a constant angular acceleration of 2.0 rad/sec², then the tangential acceleration of a point 3.0 cm from the center of the CD after 3.0 sec is

• A) 0.40 m/s².
• B) 0.25 m/s².
• C) 0.10 m/s².
• D) 0.06 m/s².
• E) 0.03 m/s².

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Definitions:

Relative Masses

A concept referring to how the mass of one particle or object compares to another, often used in chemistry to discuss the atomic mass of elements relative to the carbon-12 standard.

Dalton's Atomic Theory

A fundamental theory proposed by John Dalton in the early 19th century, postulating that elements are composed of indivisible and indestructible atoms which combine in chemical reactions to form compounds.

Whole Number Ratios

Describes the proportionate relationship between elements in a compound, represented by integers.

Given Element

An element stated or specified in a scientific context or problem, often as part of a chemical equation or reaction.