What is one advantage of transmitting information using digital signals rather than analog signals?
A. Signals sent digitally do not get weaker as distance increases.
B. Digital signals are not as affected by noise.
C. Digital signals have the same continuous range of values as the
original information.
D. Digital signals protect personal information better.

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm