Describe what happens inside a CD
player when you listen to an audio CD.

The thing that happens inside a CD player when you listen to an audio CD is that laser beam turns on and scans along a track with the photocell from the CD's center.

The electrical conductivity of a semiconductor material is between that of a conductor, such as metallic copper, and that of an insulator, such as glass.

A small photoelectric cell and a smaller laser beam (called a semiconductor diode laser) are found inside your CD player (an electronic light detector). When you hit play, the disc is rotated at a high speed by an electric motor (not visible in this figure) (up to 500rpm).

The laser beam turns on and scans along a track with the photocell from the CD's center to its edge (in the opposite way to an LP record). As the laser/photocell scans from the center to the periphery of the disc, the motor gradually slows it down (as the track number increases, in other words).

Hence laser beam turns on and scans along a track with the photocell from the CD's center.

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How many grams of Oxygen are in 7.2 grams of C12H22011? Round your answer to the hundredth place (0.01)

What do atoms consist of?

Select the correct answer.

This chemical equation is not balanced:
AgBr(s) → Ag(s) + Br2(g).

Why isn’t it possible for the reaction to occur as indicated by the unbalanced equation?

A.
There are more substances on the right side of the equation than on the left side.
B.
There is a gas on the right side of the equation but not on the left side.
C.
The bromine atoms must go through a liquid state before becoming a gas.
D.
There is more mass represented on the right side of the equation than on the left side.
E.
The bromine atoms on the right side of the equation are not bonded to another element.

What is the symbol of element Californium?

Determine the products of the following reaction:
Ca(OH)2 (aq) + 2 CuCl(aq) →
(aq) +
H(s)
:: Caci
:: CaCl2
+ CuOH
:: Cu(OH)2
*: CIOH
:: Cacu

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What is the percent composition of Nitrogen in dinitrogen trioxide?

What is the Molar Mass of Iron(Fe)? and also state how many particles there are in one mole of iron. will give brainliest to first answer

How many atoms of tin are found in 3.50 moles of tin?

What is the ultimate goal of reproductive strategies?

12. When can a theory be revised?

if the general public does not understand the theory

when a new scientist begins working on it

after 10 years

if new knowledge expands and corrects our understanding

$4000 principal earning 6% compounded annually. what will the balance be after 6 years

In 2011, fires in Bastrop County, Texas were the most damaging wildfires in Texas history. The fire spread through the pine trees and scorched nearly 5,700 acres of Bastrop State Park. The majority of the Houston toad’s habitat was lost, and the Lost Pines Forest was greatly affected. As ecological succession began, which of these most likely appeared in the Bastrop forest area first?
A.Shrubs and trees
B. Newly developed topsoil
C.Weeds and grasses
D.Lichens on fallen trees

Which detail supports the main idea Bats are useful to humans?
Bats often live in large colonies in caves and under bridges.
Bats are the only mammal that truly flies.
Bats eat hundreds of mosquitoes and other annoying insects at night.
Some bats carry rabies, a deadly virus.

A cell wall is the ________.
A
thin, soft membrane that surrounds the nucleus of each cell

B
collection of cytoplasm in each cell

C
rigid structure that surrounds the cell membrane of plant cells and most bacteria

D
sheets of cells that cover the lining of the stomach

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Which of the following types of soil would have the highest porosity?
A. 50% sand, 50 % clay
B. 80% sand, 20% silt
C. 40% clay, 60% silt
D. 80% clay, 20% sand

The genotype RR would be considered a purebred and the genotype Rr would be considered a hybrid. *

True or False

The transfer of pollen grains from another of a male to the stigma of female flower

When are atoms considered to be stable?

The following flow diagram shows the various steps of elimination of waste through urine. There is an error in one of the steps. (5 points)



What is the error in the diagram?
Step 2 should be the ureters carry urine to the urethra.
Step 2 should be the kidneys carry urine to the bladder.
Step 3 should be urine leaves the body through kidneys.
Step 1 should be urine flows from the kidneys to the ureters.

The photo shows a person holding a frozen smoothie. Which statement best explains why the smoothie is melting?

In the cycle, after a new moon, _______________ means light appears on the _____________ side of the moon and continues to ________________.

I NEED THE WORD EQUATION AND THE CHEMICAL EQUATION!!!! ​

Kaitlyn said that the metal sodium Na and the non metal neon Ne form the ionic compound NaNe. Using what you know about groups and valence electrons, explain why you support or do not support kaitlyns statement

What is the percent composition by mass of suifur in Na2SO?
(Molar mass of Na2SO.= 142 g/mol)

What are you doing when you are making sound
A. You are causing photons to vibrate
B. You are causing a medium to vibrate
C. You are causing the air pressure to drop
D. You are causing electromagnetic waves to radiate

help me with this asap rocky pleasee

Lightning storms trigger wildfires that burn up a lot of the plants and grasses in the ecosystem. Trees are mostly spared. what is the cause of this

What volume (in L) of carbon dioxide will be produced from the reaction of 37.4 L of oxygen?​

Analysis determined a compound contained 92.25% carbon and 7.75% Hydrogen. Determine the
empirical formula for this compound

Which of the following organisms is the most complex?

A. Paramecium
B. Amoeba
C. Volvox
D. Euglena