Two Surveyors with Two-Way Radios Leave the Same Point at 9:00

question 57

Multiple Choice

Two surveyors with two-way radios leave the same point at 9:00 A.M., one walking due south at 4 mi/hr and the other due west at 2 mi/hr. How long can they communicate with one another if each radio has a maximum range of 2.98 miles? Round the answer to the nearest minute.

• A)52 minutes
• B)116 minutes
• C)40 minutes
• D)73 minutes
• E)84 minutes

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Definitions:

Myelin

A fatty substance that forms a sheath around the axons of many neurons, increasing the speed at which electrical impulses propagate along the nerve cells.

Glial Cells

Non-neuronal cells in the central and peripheral nervous systems that provide support and protection for neurons.

Myelin Sheath

A fatty insulation that may surround the axon of a neuron.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing information and controlling responses.