A particle of mass 3m is located 1.80 m from a particle of mass m. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Superposition of gravitational forces.

Part A Where should you put a third mass M so that the net gravitational force on M due to the two masses is exactly zero?

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.