In a circus performance, a large 4.6 kg hoop of radius 5.7 m rolls without slipping. If the hoop is given an angular speed of 2 rad/s while rolling on the horizontal and is allowed to roll up a ramp inclined at 17 ◦ with the horizontal, how far (measured along the salako (ts37928) – Rotational Energy/Momentum – irons – (007) 2 incline) does the hoop roll? The acceleration of gravity is 9.8 m/s 2 .

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.