Solve. -A Pendulum Bob Swings Through an Arc 80 Inches Long

question 111

Multiple Choice

Solve.
-A pendulum bob swings through an arc 80 inches long on its first swing. Each swing thereafter, it swingsonly 66% as far as on the previous swing. What is the length of the arc after 9 swings? Round your answerto two decimal places, if necessary.

• A)2.88 inches
• B)1.9 inches
• C)1.25 inches
• D)422.4 inches

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Definitions:

Traditional Experiment

A research methodology involving the manipulation of variables to determine their effect on a particular outcome, usually featuring a control and experimental group.

Control Group

In an experiment, the group that is not exposed to the treatment and is used as a benchmark to measure how the other tested subjects do.

Independent Variable

The variable in an experiment that is manipulated or changed in order to test its effects on a dependent variable.

Dependent Variable

A variable in an experiment that is expected to change in response to changes in the independent variable.