On an audio compact disc (CD), digital bits of infor- mation are encoded sequentially along a spiral path. Each bit occupies about 0.28 µm. A CD player's readout laser scans along the spiral's sequence of bits at a constant speed of about 1.2 m/s as the CD spins. (a) Determine the number N of digital bits that a CD player reads every second. (b) The audio information is sent to each of the two loudspeakers 44,100 times per second. Each of these samplings requires 16 bits, and so you might expect the required bit rate for a CD player to be samplings (16 sampling, bits bits = 1.4 × 106 No = 2(44,100 where the 2 is for the 2 loudspeakers (the 2 stereo channels). Note that No is less than the number N of bits actually read per second by a CD player. The excess number of bits (= N - No) is needed for encoding and error- correction. What percentage of the bits on a CD are dedicated to encoding and error-correction?

On an audio compact disc (CD), digital bits of infor- mation are encoded sequentially along a spiral path. Each bit occupies about 0.28 µm. A CD player's readout laser scans along the spiral's sequence of bits at a constant speed of about 1.2 m/s as the CD spins. (a) Determine the number N of digital bits that a CD player reads every second. (b) The audio information is sent to each of the two loudspeakers 44,100 times per second. Each of these samplings requires 16 bits, and so you might expect the required bit rate for a CD player to be samplings (16 sampling, bits bits = 1.4 × 106 No = 2(44,100 where the 2 is for the 2 loudspeakers (the 2 stereo channels). Note that No is less than the number N of bits actually read per second by a CD player. The excess number of bits (= N - No) is needed for encoding and error- correction. What percentage of the bits on a CD are dedicated to encoding and error-correction?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A particle of mass m has a time-dependent position vector r(t) = (Rcos(ωt),Rsin(ωt),αt) in Cartesian coordinates, where R, ω and α are positive constants. What are the physical dimensions of R, ω and α? Show that the speed of the particle is constant. Does it mean that the acceleration is zero? Justify.
A bear, searching for honey wanders 30 meters south, then 15 meters west. Frustrated, he wanders another 14 meters north and then 5 meters east. Calculate the magnitude of bear's displacement. Round the answer to three significant figures.
Design a 4-bit binary magnitude comparator and write the expressions for Y1(A>B), Y2 (A=B) and Y3 (A<B).
Sweet corn plants can grow 4.1 cm in heightper day. What is this speed in (a) millimeters per second and(b) feet per week?
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.60 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What is the magnitude of the couple's displacement? (c) What is the direction (relative to due east) of the couple's displacement? (a) Number i Units (b) Number i (c) Number i Units Units
A room has dimensions 2.18 m (height) x 4.60 mx 6.62 m. A fly starting at one corner flies around, ending up at the diagonally opposite corner. (a) What is the magnitude of its displacement? (b) If the fly walks rather than flies, what is the length of the shortest path it can take? (Hint: This can be answered without calculus. The room is like a box. Unfold its walls to flatten them into a plane.) (a) Number 8.35 Units (b) Number 8.20 Units m
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.91 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What is the magnitude of the couple's displacement? (c) What is the direction (relative to due east) of the couple's displacement? (a) Number Units (b) Number i (c) Number i Units Units
Date: 2/7/2022 Suppose you walk Dw=14 m straight west and then DN= 28 m straight north.
Foraging bees often move in straight lines away from and toward their hives. Suppose a bee starts at its hive and flies 500 mm due east, then flies 450 mm west, then 660 mm east.