Which is accurate about average and instantaneous speed? O Instantaneous speed is calculated using a longer time interval than average speed.

OAverage speed is calculated using a shorter time interval than instantaneous speed.

O Average speed is calculated using the same size time interval as instantaneous speed.

O Instantaneous speed is calculated using an instant of time and average speed uses an easily
measureable time interval.

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.