How should you draw the field lines for earth's magnetic field?
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a. coming out near the south pole and going in near the north pole
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b. as horizontal circles around earth, pointing toward the east
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c. as horizontal circles around earth, pointing toward the west
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d. coming out near the north pole and going in near the south pole

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. which of the following best describes how such a telephone is able to transmit and receive information? a. the cellular telephone transmits, receives, and encodes information using only sound waves. b. the cellular telephone transmits, receives, and encodes information using only electromagnetic waves. c. the cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound. d. the cellular telephone transmits information by sound waves to a receiver which then encodes them and produces electromagnetic waves.