I'LL GIVE BRAINLIST
What advantages does wifi applications of waves have over the previous technology?

Answers

Answer 1
Wi-Fi technology has its origins in a 1985 ruling by the U.S. Federal Communications Commission that released the bands of the radio spectrum at 900 megahertz (MHz), 2.4 gigahertz (GHz), and 5.8 GHz for unlicensed use by anyone. Technology firms began building wireless networks and devices to take advantage of the newly available radio spectrum, but without a common wireless standard the movement remained fragmented, as devices from different manufacturers were rarely compatible. Eventually, a committee of industry leaders came up with a common standard, called 802.11, which was approved by the Institute of Electrical and Electronics Engineers (IEEE) in 1997. Two years later a group of major companies formed the Wireless Ethernet Compatibility Alliance (WECA, now the Wi-Fi Alliance), a global nonprofit organization created to promote the new wireless standard. WECA named the new technology Wi-Fi. Subsequent IEEE standards for Wi-Fi have been introduced to allow for greater bandwidth. The original 802.11 standard allowed a maximum data transmission rate of only 2 megabits per second (Mbps); 802.11n, introduced in 2007, has a maximum rate of 600 Mbps.

Under the IEEE Wi-Fi standards, the available frequency bands are split into several separate channels. These channels overlap in frequency, and therefore Wi-Fi uses channels that are far apart. Within each of these channels, Wi-Fi uses a “spread spectrum” technique in which a signal is broken into pieces and transmitted over multiple frequencies. Spread spectrum enables the signal to be transmitted at a lower power per frequency and also allows multiple devices to use the same Wi-Fi transmitter. Because Wi-Fi signals are often transmitted over short distances (usually less than 100 metres [330 feet]) in indoor environments, the signal can reflect off walls, furniture, and other obstacles, thus arriving at multiple time intervals and causing a problem called multipath interference. Wi-Fi reduces multipath interference by combining three different ways of transmitting the signal (in a method developed by Australian engineer John O’Sullivan and collaborators). The popularity of Wi-Fi has grown steadily. Wi-Fi allows local area networks (LANs) to operate without cables and wiring, making it a popular choice for home and business networks. Wi-Fi can also be used to provide wireless broadband Internet access for many modern devices, such as laptops, smartphones, tablet computers, and electronic gaming consoles. Wi-Fi-enabled devices are able to connect to the Internet when they are near areas that have Wi-Fi access, called “hot spots.” Hot spots have become common, with many public places such as airports, hotels, bookstores, and coffee shops offering Wi-Fi access. Some cities have constructed free citywide Wi-Fi networks. A version of Wi-Fi called Wi-Fi Direct allows connectivity between devices without a LAN. Radiotelegraphy, radio communication by means of Morse Code or other coded signals. The radio carrier is modulated by changing its amplitude, frequency, or phase in accordance with the Morse dot-dash system or some other code. At the receiver the coded modulation is recovered by an appropriate demodulator and the code groups are converted into the corresponding symbols. In many instances the symbols are generated by a computer and modem rather than with a manual telegraph key.

Related Questions

The diagram shows a proposed process in the history of evolution. Which 4 points process is outlined in the diagram? Mitochondrion Endoplasmic reticulum Plasma membrane Nuclear Cytoplasm envelope Nucleus DNA Engulfing of aerobic heterotrophic prokaryote Heterotrophic eukaryote Prokaryote Mitochondrion Chloroplast Photosynthetic eukaryote Engulfing of photosynthetic prokaryote O Speciation due to natural selection Endosymbiosis Formation of early organic molecules Chemosynthesis

speciation due to natural selection
endosymbiosis
formation of early organic molecules
chemosynthesis ​

Answers

Answer:

formation of early organic molecules

NEED HELP ASAPPPP!!!

Answers

Answer:

345

explanation:

the line on the graph is higher than 300 and close to 350 hence any answer below 300 is wrong .so the answer is 345.

Plz help me well mark brainliest if you are correct!!

Answers

Answer:

All of these are natural resources.

Explanation:

Because they are not manufactured.

. The average adult (like Hank) is _________% water, ________% protein, _______% fat, _______% minerals, and _______% carbohydrates. 2. All the macromolecules that make you up come from ______________________________. 3. __________________________ reactions destroy the reactants that you give them, making big, complex substances smaller and __________________________ reactions reassemble the smaller products into new, bigger products. The processes behind these two sets of reactions make up your

Answers

Answer:

1. 62 percent water, 16 percent fat, 16 percent protein, 6 percent minerals, and less than 1 percent carbohydrate, along with very small amounts of vitamins and other miscellaneous substances.

2. Food.

3. Catabolic, Anabolic, Metabolism

Importance of photosynthesis to humans

Answers

Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.

Answer: Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.

Explanation:

The Cell Theory also states that all living cells have chloroplasts and a cell
wall.
True or false

Answers

Answer:

False

Explanation:

Cell walls are only found in plant cells.

please help!!! i’ll mark as brainliest!! what is the type of system where a furnace burns fuel and heats air?

a. radiation system
b. forced - heat - system
c. conduction system
d. forced - air - system

Answers

Answer:

C

Explanation:

carbon is used as fuel and heats the furnace

Which is it MUTUALISM, PREDATION, and COMPETITION


The Canadian lynx and snowshoe hare both live in the northern forests of Canada and Alaska. The population of snowshoe hares rises and falls based on resource availability When the population of snowshoe hares falls, the Canadian lynx suffers from lack of food resources.​

Answers

Answer:

Predation.

Explanation:

Why is transcription both the same and different between chloroplasts and mitochondria?

Answers

Answer:

because they have similar functions

As the water is forming into ice on tree branches are the molecules (gaining/losing) freedom of movement?

Answers

answer: losing

as the the water begins to freeze so does the molecules

List as many examples of seasonal changes of plants and animals that you can.
No links!!! | help please!!

Answers

Answer:

Leaves change colors

animals migrate

animals shed (winter coat vs summer coat)

flowers bud in spring

ex: snow rabbits are white in winter and brown in summer

Explanation:

Match the component of cellular respiration with the object that closely mirrors its function.
1. Battery A.Bloodstream
2. Delivery Truck B. Glucose
3. Poison C. Mitochondria
4. Raw material D. ATP
5. Factory E. Carbon Dioxide​

Answers

(1/D)
(2/A)
(3/E)
(4/B)
(5/C)
I'll say 1 and 4 was a little tough because they are both are energy but I hope that I put them in there rightful spot!

The battery is like ATP, Delivery Truck is like the bloodstream, poison is like carbon dioxide, raw material is like glucose and the factory is like mitochondria.

What is cellular respiration?

Through the process of cellular respiration, organisms mix oxygen with food molecules, directing the chemical energy contained in these substances toward life-sustaining processes while excreting carbon dioxide and water as waste.

Foods are broken down by microorganisms that do not require oxygen in a process known as fermentation.

Adenosine triphosphate (ATP), an energy-rich compound that absorbs the chemical energy obtained from the breakup of carbohydrates and fats and releases it to fuel other cellular processes, is one goal of the degradation of foodstuffs. ATP is created when the energy contained in chemical bonds is converted from one form to another.

The mitochondria, which are highly organized rod-shaped compartments, are where the enzymes that catalyze the individual processing steps in respiration and energy conservation are found in eukaryotic cells, which are defined as any cells or organisms that obtain a clearly defined nucleus and membrane-bound organelles.

Therefore, the battery is like ATP, Delivery Truck is like the bloodstream, poison is like carbon dioxide, raw material is like glucose and the factory is like mitochondria.

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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Answers

Answer:

D

Explanation:

All the other answers dont really make as much sense. So D is best answer.

:)

NEED FAST PLS!!! which option identifies the argument refuted in the following scenario?

Lucy possesses a gene for melanoma she chose has to stay out of the sun

A. genetic information is purely internal influenced

B. dominant traits are always passed from parent to child

C. genes are incapable of mutation during transference

D. it is impossible to partially inherit a genetic trait​

Answers

Answer:

D. it is impossible to partially inherit a genetic trait​

Explanation:

Use the data you calculated in parts A and B to explain why gypsy moths could threaten biodiversity in the ecosystem.


Answer: edmentum

The number of gypsy moths is growing exponentially in a short period of time, which suggests that there are few predators controlling their population. This growth also aids the exponential destruction of shrubs and trees, which native species rely on for food and shelter. Increased competition for these resources will likely cause the population of many native species to decline. Over time, some of the native species may die out or leave the area, leading to a decline in biodiversity.

Answers

Answer:

The number of moths are growing fast in just a short period of time, this means that their poulation is being controlled by their predators. As the population of the moths continue to grow, there will be an increase in the destruction of crops and trees within the moth's environment. Over time some of the species may die out and cause them to relocate and cause a decrease in biodiversity.

Explanation:

I put this answer in my own words, so you may copy and paste it.

The caterpillar of the Gypsy Moth provokes tree damage but since it is the only stage of the life cycle that utilizes food. When the population of feeding caterpillars reaches pandemic proportions, they can completely defoliate trees.

What is a biodiversity?

The term biodiversity pertains to the diversity of life on Earth at all levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that enable life to exist.

The caterpillar of the Gypsy Moth provokes tree damage but since it is the only stage of the life cycle that utilizes food.

When the population of feeding caterpillars reaches pandemic proportions, they can completely defoliate trees.

Thus, this way gypsy moths could threaten biodiversity in the ecosystem.

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How can making blue jeans affect the environment? Explain​

Answers

Answer:

The other colors of jeans are toxic

Explanation:

Unsafe amounts of toxic metals like mercury, lead, and copper have been found in the water, which residents rely on for drinking and bathing. ... All in all, producing a single pair of jeans requires an immense amount of water and energy and creates significant pollution

the outcome of cell signaling is...
a. altered cell shape and movement
b. all outcomes listed here
c. altered gene expression
d.altered cell metabolism

Answers

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

What are each of these blood vessels responsible for when it comes to transporting blood in the body?
Arteries
Capillaries
Veins

Answers

Is veins in charge of transporting the blood

Need help asap explain how scientists can use spectra to determine substances on another planet is what it says at the bottom

Answers

You can use spectra to determine substances on another planet is what it says at the bottom. This explains how scientists can use spectra to determine.

A researcher is comparing amino acid sequences
for the protein hemoglobin from several primate
species. What does the degree of similarity in
sequences among the primate species indicate
about these species?
A.
how closely related they are
B.
how frequently they interbreed
C.
how rapidly they can evolve in the future
D. how efficient their circulatory systems are

Answers

The answer is gonna be B how frequently they interbreed

Smoking causes fibrosis within the lungs. How does this affect lung compliance?
Compliance is not affected so breathing doesn't change
Compliance decreases and therefore breathing becomes more difficult.
Compliance increases and therefore breathing becomes more difficult
Compliance decreases and therefore breathing becomes easier.
Compliance increases and therefore breathing becomes easier

Answers

The answer is B
Trust me

The picture below shows the energy flow through a meadow community.

Hurry!!!

Which of the following would most likely occur to the populations of the community immediately after a wildfire burns the environment?

Group of answer choices

Hawks and foxes would increase

Hawks would increase and foxes would decrease

Meadow plants would increase and rabbits would decrease

Meadow plants and rabbits would decrease

Answers

I think meadow plants & rabbits would decrease. It would take awhile before the plants would regrow & the rabbits would lose their food supply from their habitat, which effects the rabbits population.

haploid daughter cells form

Answers

Answer:

ok

Explanation:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cells.
Hope this helps you!

Why do you need to breathe in oxygen?
a.Oxygen is needed to split glucose.
b.Oxygen provides energy that is to be put into ATP.
c.Oxygen pulls electrons through the process of cell respiration.
d.Oxygen reduces the NAD+ and FADH to produce NADH and FADH2

Answers

C. O2 pulls electrons through the process of cell respiration

Answer:

a

Explanation:

Breathing in of oxygen is respiration. And respiration is the taken in of oxygen to break down glucose and energy in form of ATP as by product

What is needed for evolution to take place?

Answers

Answer:

genetic variation

Explanation:

What are the three parts of a neucleotide

Answers

Each nucleotide, in turn, is made up of a nitrogenous base, a pentose sugar, and a phosphate.

Each nucleotide, in turn, is made up of a nitrogenous base, a pentose sugar, and a phosphate.

17. Explain how carbon reservoirs can
be accessed without the influence
of humans.

Answers

Answer:Without human interference, the carbon in fossil fuels would leak slowly into the atmosphere through volcanic activity over millions of years in the slow carbon cycle. ... About half of these emissions are removed by the fast carbon cycle each year, the rest remain in the atmosphere.

Explanation:Hope this helps you!

In the slow carbon cycle, volcanic activity would release fossil fuel carbon into the atmosphere over millions of years without human intervention. The rapid carbon cycle removes half of these emissions annually, leaving the rest in the atmosphere.

What are 4 carbon reservoirs?

These are the reservoirs or sinks that carbon moves through as it cycles through the environment. Carbon is returned to the atmosphere through a wide number of different processes, including the decomposition of organisms, the eruption of volcanoes and fires, the combustion of fossil fuels, and more.

Carbon reservoirs contain substantial quantities of carbon between processes.

Burning fossil fuels such as natural gas, coal, and oil releases CO2, which is damaging to the environment and to individuals.
Using fossil fuels reduces carbon stores as well.
Toxic gases and smoke are released by industrial chimneys as a result of the combustion of fossil fuels.

Therefore, the carbon stocks such as fossil fuels have been used by humanity.

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Explain the merits of alternative strategies of waste management.

Answers

Many benefits are realized by waste minimization or source reduction, including reduced the use of natural resources. This reduces the need for excess material.

A guiding question instead of a hypothesis is most likely used in which of the following?

A. Scientific investigation
B. Laboratory experiment
C. Laboratory test
D. Repeated trials​

Answers

The answer is C lmk if you have any questions

Hemophilia is
A. an autosomal dominant inherritated disorder
B. an autosomal recessive inherited disorder
C. an Y- linked recessive disorder
D. an X- linked recessive inherited disorder ​

Answers

the answer is C jsjsjs
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