Choose the One Alternative That Best Completes the Statement or Answers

question 121

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Solve.
- $\mathrm { d } = \mathrm { rt }$ for $\mathrm { r }$

• A) \(r = \frac { t } { d }\)
• B) \(r = \frac { d } { t }\)
• C) \(r = d t\)
• D) \(\mathrm { r } = \mathrm { d } - \mathrm { t }\)

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Definitions:

Frequencies

Describes the number of times an event occurs within a specified period of time.

Outer Space

The physical universe beyond the earth's atmosphere, characterized by a vacuum and extreme temperatures.

Frequency

The number of occurrences of a repeating event per unit of time, often used to measure the waves of sound and light.

Sound Wave

A wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.