A CD with a Diameter of 12

question 11

Multiple Choice

A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.00 rad/sec² acquires an angular velocity of 5.00 rad/sec. The CD continues rotating at 5.00 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular acceleration. What is the magnitude of the (total) acceleration of a point 4.00 cm from the center at the time 30.0 seconds from the start?

• A) 0.0650 m/s²
• B) 0.0522 m/s²
• C) 0.0444 m/s²
• D) 0.0324 m/s²
• E) 0.0243 m/s²

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Definitions:

Exothermic

A chemical process that releases energy to its surroundings, usually in the form of heat.

Free Radical Chain Reaction

A sequence of reactions where free radicals, generated in an initial step, propagate and react with other molecules to produce stable products, typically involving a chain initiation, propagation, and termination step.

Bond Dissociation Energies

The energy required to break a specific chemical bond in a molecule into two parts, under specified conditions.

ΔS°

The standard entropy change of a chemical reaction, representing the difference in entropy between the products and reactants under standard conditions.