The bacterium Escherichia coli propels itself with long, thin structures called flagella. When its flagella exert a force of 1.50×10−13 N, the bacterium swims through the water at a speed of 30.0 μm/s. Assume that the drag force on the bacterium is directly proportional to the speed with proportionality constant , such that =. Determine the speed 2 of the bacterium in water when the force exerted by its flagella is 2.75×10−13 N. Answer in units of micrometers per second.

pls dont give me the answer i just need the equation

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.