Find the direction (in degrees counterclockwise from the +x-axis) and magnitude (in N) of Ftot the total force exerted on her by the others, given that the magnitudes F1 and F2 are 21.6 N and 15.8 N, respectively. (Assume F1 points in the positive x direction.)

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.