What is the final equilibrium temperature when 12 g of milk at 7◦c is added to 175 g of coffee at 69◦c? assume the specific heats of milk and coffee are the same as that of water, and neglect the specific heat of the container. answer in units of ◦c.

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.