A Ceiling Fan Is Turned on and Reaches an Angular

question 63

Multiple Choice

A ceiling fan is turned on and reaches an angular speed of 132 rev/min in 20 s.It is then turned off and coasts to a stop in an additional 40 s.The ratio of the average angular acceleration for the first 20 s to that for the last 40 s is which of the following?

• A)6.6
• B)6.4
• C)−0.15
• D)−2.0

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Definitions:

Cortisol

A steroid hormone released by the adrenal glands in response to stress or low blood-glucose concentration, playing a critical role in metabolism, immune response, and stress management.

Interactions

Reciprocal actions or influences between two or more entities, individuals, or groups.

Negative

A term describing something harmful, undesirable, or expressing disapproval.

Divorce

The official termination of marriage by a court or a recognized authority.