what does amplifier mean

Answers

Answer 1

Answer:

NOUN

an electronic device for increasing the amplitude of electrical signals, used chiefly in sound reproduction.

a device consisting of an amplifier combined with a loudspeaker, used to amplify electric guitars and other musical instruments.

Explanation:


Related Questions

A person who has very toned muscles likely has.... A.extra nerve cells. B. lots of digestive enzymes. C.tightly packed myofibrils. D.lots of smooth E.R.

Answers

We can confirm that a person with very toned muscles likely has tightly packed myofibrils.

What are myofibrils?

These fibers are the protein filaments that cause contractions in the structure of the muscle. Weight training tones muscles by increasing the number of myofibrils in a sarcomere, thus increasing its capacity to produce force.

Therefore, we can confirm that a person with very toned muscles likely has tightly packed myofibrils.

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Answer: C

Explanation:

In this group, which percentage does the green seed
represent?
O 25%
O 50%
O 75%
Yellow
Yellow
O 100%
Yellow
Green

Answers

Green would represent 25%

Explain the places occupied by grass, a rabbit, and a wolf in an energy pyramid.

Answers

Answer:

Grass is on the bottom of the energy pyramid because it needs the least amount of energy. A rabbit is in the primary consumers level, and a wolf is a secondary level consumer.

Explanation:

Most of our energy waste in north america results from.

Answers

Answer:

. Most of our energy waste in North America results from

A. A failure to turn off lights

B. Technological inefficiency

C. The fact that more efficient energy conversion is not possible

D. Overwhelming public ignorance of conservation issues

E. The fact that energy conservation techniques are quite expensive

B. Technological inefficiency

A chicken has 39 pairs of chromosomes and a human has 23 pairs of chromosomes. The four nitrogen bases (adenine, thymine, guanine & cytosine) are the same for both the chicken and human. What makes chicken DNA different from human DNA?

Answers

The amount of chromosomes the chicken has is different from the amount of chromosomes the human has ! Hope this helped

2. Summarize the trends you see in each population from each generation. a. Dark bears— b. Light bears—

Answers

The black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.

Dark bears

The black bear (Ursus americanus), also known as the baribal, is a North American bear, found from Alaska to northern Mexico. It reaches 2.20 m in length, 1.10 m in height at the withers and 360 kg in weight.

Light bears

The polar bear (Ursus maritimus) is a solitary mammal that lives in the icy waters of the Arctic Circle region. It is the largest species of bear that lives in places with low temperatures, being much feared by other animals that inhabit the place.

Considered the largest terrestrial carnivore and main symbol of arctic resistance, the polar bear has been suffering from climate change.

Whit this information, we can conclude that the black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.

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What is the purpose of spindle fibers during mitosis?

divide the cell in half

organize centrioles

separate sister chromatids
split the nuclear envelope

Answers

Answer:

I think the answer Is divide the cell in half and see the explanation

Explanation:

Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis

WILL GIVE BRAINLIEST IF UR RIGHT! PLEASE HELP and thank you?

Which activity would be carried out by a conservation biologist?


conduct survey of a species population in an ecosystem


pass laws restricting pollution


enforce a law restricting the catch of a commercial fishing vessel


purchase land for a conservation easement

Answers

Answer:

It would probably be "conduct survey of a species population in an ecosystem"

Which one below will end up being expressed in the protein?
a) Intron
b) Exon
c) Transcription factor
d) Terminator
e) Promoter

Answers

Exons are the DNA fragments that get to be transcripted and translated into proteins. Option b) Exons end up being expressed in the protein.

What are introns and exons?

Even though more than 70% of the DNA is related to genes, just a part of the genes is translated to proteins. Most genes have DNA segments that are not transcripted or translated intercalated with segments that are translated.

Introns are non-encoding sequences that produce interruptions in a eukaryotic gene. Exons are the encoding sequences. Exons are the nucleotidic sequences that do codify proteins.

Most of the eukaryotic, multicellular genes contain introns in their sequences, intercalated with exons.

Introns are transcripted to mRNA molecules and get excised before translation by a specific mechanism. This occurs before the mRNA leaves the nucleus. The introns are excised and the exons must splice to form a unique molecule. This process is known as splicing.

Exonic sequences are the fragments that are transcripted and translated into proteins.

The correct option is b). Exons end up being expressed in the protein

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Which of the following reasons is proof that viruses are not living cells?
A) Viruses only have DNA.

B)Viruses are covered by a protein coat.

C)Viruses are not capable of replicating outside a host cell.

D)Viruses cause diseases in both plants and animals.

Answers

Answer:

c

Explanation:

viruses aren't like bacteria where they could survive on their own.

Imagine that someone from another planet is visiting Earth. They see aeroplanes and birds
moving through the sky,
Explain to the visitor why birds are alive and aeroplanes are not alive, even though they seem to
share some of the characteristics of living things

Answers

Birds, like airplanes, must be lightweight as well as powerful. They can fly only because evolution slimmed down their entire anatomy from their reptilian ancestors. Over time, the bones of birds have become lighter and, in the case of many "finger bones," some have disappeared altogether.

How do vaccines work if the pathogen in them is dead?

Answers

Vaccines work by stimulating the immune system to recognize and defend against specific pathogens, such as viruses or bacteria, that cause diseases.

How vaccines work

There are different types of vaccines, including those that contain dead or inactivated pathogens.

When a vaccine contains dead or inactivated pathogens, it means that the pathogens have been rendered non-functional or unable to cause disease. However, they still retain their antigenic properties, which means they can trigger an immune response.

When the dead or inactivated pathogens are introduced into the body through vaccination, the immune system recognizes them as foreign invaders.

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Should the amendment , which allows for free speech , include all types of speech ? What about bad language racial slurs , and other words that hurt other people's feelings?

Answers

Explanation:

No because a speech has to be a meaningful speech

There’s nothing that can be said that every single person will agree with. If we banned all speech that someone found offensive, we wouldn’t be able to say much. Everybody can take offense to something.

Refer to the illustrations showing a sarcomere in two different stages What does Stage 2 represent?
a muscle that is rotating
a muscle that is fully at rest
a muscle that is fully contracted​

Answers

Answer:

Stage 2 represents a muscle that is fully contracted.

Explanation:

Verified by correct test results.

Answer:

a muscle that is fully contracted

Explanation:

Differences in function between the wing of a bird and the forelimb of a seal can be explained by:.

Answers

Differences in function between the wing of a bird and the forelimb of a seal can be explained by natural selection and adaptation to different environments.

What is evolution?

Evolution refers to descendence with modification in an organism, which occurs via natural selection.

Natural selection is the differential reproduction and survival of the more adapted organisms in an environment.

An adaptation is a certain feature that allow organisms to survive in particular environmental conditions.

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The left coronary artery typically branches into the __________ interventricular artery and the __________ artery.

Answers

The left coronary artery typically branches into the anterior interventricular artery and the circumflex artery.

What is the circumflex artery?

The circumflex artery is an artery that branches from the left coronary artery, which is one of the most important arteries in the body.

The circumflex artery is well known to envelop and surround all the heart muscle (cardiac muscle).

The circumflex artery is a fundamental blood vessel in the heart and its damage may have serious health problems.

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Water has several properties that make it unique amongst compounds and make it possible for all forms of known life to function. The graph provided depicts what happens to the density of water as the temperature gets colder. According to the graph, what happens to the water’s density as it freezes and why? (SC.912. L.18.12)

When the temperature of the water finally goes below 4°C, the density of water decreases and as a result ice does not sink. The surface water freezes at 0°C while the lower part remains at 4°C

When the temperature of the water finally goes below 4°C, the density of water increases and as a result, ice doesn’t sink. The surface water freezes at 0°C and the water below freezes as well, allowing life to exist below frozen lakes

Water continues to get denser as the temperature get colder

The properties of cohesion and adhesion are directly responsible for water expansion at 4°C allowing aquatic life to survive under frozen lakes

Answers

Water’s density increases as it freezes or at lower temperature which is a unique property of water that enables aquatic animals to survive.

How cold water has more density?

Cool water has more density because cooling a substance leads to molecules to slow down and get closer to one another, occupying a smaller volume that results in an increase in density while on the other hand, the warm water is less denser and will float on room-temperature water.

So we can conclude that cold water is more dense and will sink in room-temperature water.

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Which of the following is a biotic or an abiotic resource in the environment that causes population size to decrease?

A. Growth Factors
B. Limiting Factors
C. Limiting Nutrient
D. Carrying Capacity

Answers

Answer:

Answer islimiting factor.

Explanation:

A limiting factor is anything that constrains a population's size and slows or stops it from growing.

Where is dna stored in octoploid

Answers

Answer:

DNA is found in the nucleus of each cell.

Explanation:

An Emperor Penguin’s heart rate can slow significantly during a dive. This enables it to conserve oxygen underwater and spend more time finding food. This type of adaptation is known as:

A
Physiological adaptation


B
Habituation


C
Artificial selection


D
Behavioral adaptation

Answers

This would be a physiological adaptation because the way the penguins body functions has been altered to help it have the greatest chances of surviving in its unique environment.

How does the Siamese fighting fish deal with living in shallow, oxygen poor water?​

Answers

Explanation:

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Name one activity that humans do that causes weathering

Answers

Answer:

burning coal

Explanation:

hop this is helpful

A box is pushed a distance of 4 meters with a force of 10 N. How much work has been done?

6 units of work
40 units of work
14 units of work

No work has been done

Answers

The quantity of work done by the box is equal to 40 units of work.

Given the following data:

Distance = 4 meters.

Force = 10 Newton.

How to calculate work done.

In Science, work done is generally calculated by multiplying force and the vertical distance (displacement) that is covered by an object.

Mathematically, work done is given by the formula:

Work done = force × distance

Substituting the given parameters into the formula, we have;

Work done = 10 × 4

Work done = 40 units of work.

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Explain the difference between rotating and revolving. Then, describe the rotation and revolution/orbit of Earth.

Answer in at least four complete sentences. (o-o¬)
Be sure to check your grammar and spelling.
You can use the sentence starters and hints below to help you answer the questions:
When the Earth rotates, it is ________________________________.

When the Earth completes one revolution, it is __________________________.

*Hints for your last two sentences: Think about the shape of Earth's orbit, how long one rotation and one revolution take, etc.

Answers

Answer:

Rotation is the spinning of an object in one place. Revolution is the circling of an object in a given orbit (path).

Explanation:

When the earth rotates, it spins on its own axis which is tilted at 23.5 degrees. Thus, we can conclude that the earth rotates on its axis every 24 hours relative to the Sun.

When the Earth completes one revolution around the sun in a fixed orbit in 365.25 days. This means the earth takes approximately 365 days to completely encircle around the sun and return back to its original position.

(The extra .25 day is added every year to make up one full day. Hence, we see a leap year every 4 years).

3. Explain why the CO2 levels from automobiles and
industry are unable to be cycled into the carbon
cycle like normal cellular respiration.

Answers

The engine in a vehicle is not powered by the carbon it produces

Please somebody help me!

Answers

The hydrosphere, lithosphere, and the biosphere. This is because the water fall is interacting with the land , and on the land there are living things growing. Hope this helped :))

Which describes the chromosome theory of inheritance?

Answers

The Chromosomal Theory of inheritance, proposed by Sutton and Boveri, states that chromosomes are the vehicles of genetic heredity. Neither Mendelian genetics nor gene linkage is perfectly accurate; instead, chromosome behavior involves segregation, independent assortment, and occasionally, l1nkage.

when a muscle cell demands energy to contract,what happens to ATP

Answers

Answer:

he ATP is used to return the mysoin head to its starting position. The ATP is hydrolyzed to Pi + ADP. The head with the ADP and Pi attaches itself to the actin filament. When ADP and Pi release the mysoin head pulls back.

Explanation:

Answer:

The ATP is used to return the mysoin head to its starting position. The ATP is hydrolyzed to Pi + ADP. The head with the ADP and Pi attaches itself to the actin filament. When ADP and Pi release the mysoin head pulls backback

Explanation:

Assume all of the presynaptic synapses identified produce epsps. If two of these synapses fired simultaneously, which synaptic combination brings the initial segment closest to threshold based on spatial summation? click on the appropriate synapses.

Answers

Based on spatial summation, the synapses closest to each other will brings the initial segment closest to threshold.

What are Excitatory Post-Synaptic Potentials, EPSPs?

Excitatory Post-Synaptic Potentials, EPSP, are postsynaptic potential changes that are induced by neurotransmitters which depolarizes the cell, and hence increases the likelihood of initiating a postsynaptic action potential.

Based on spatial arrangement, the summation of two simultaneously fired synapses that is greater than or close to threshold potential will produce an action potential.

Therefore, the synapses closest to each other will brings the initial segment closest to threshold.

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Using the phylogenetic tree which is more related fungi and animals or plants and fungi. Explain why​

Answers

Answer:

The study of cladistics, however, results in a phylogeny tree in which fungi are more closely related to animals than to plants. In other words, animals have a more recent common ancestor with fungi than with plants, and the mushrooms in your salad are more closely related to you than to the lettuce. Differences Between Fungi and Animals

Explanation:

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PLEASE HELP, I GIVE BRAINLIEST!!READ:The US participated in the Vietnam War and the presidents advisors believed thatAmerica has a responsibility to stand up to any communist nation. it was untrue thattorpedoes were fired at an American ship that was in the Gulf of Tonkin and thatPresident Johnson claimed that an American ship had been attacked when it was not.President Johnsons claim resulted in Congress passing the Gulf of Tonkin Resolutionthat allowed President Johnson to expand the war in Vietnam.Directions: Imagine that you are a teenager in 1964 when America started dropping bombs on North Vietnam. Based on the above background. think about whether you support or do not support the bombing of North Vietnam. Write a two-paragraph letter addressed to President Johnson as to why we should or why we should not be involved in the Vietnam War. Your letter should be creative but based on historical facts Your letter should be at least two full paragraphs in length, 5-7 sentences each, and should follow a standard letter format with a greeting and salutation at the end.Please help! 100 points and brainiest! The manager of a car dealership is offering a bonus to any salesperson who sells 2 cars today. Lately, Kim has been able to sell a car to 20% of the customers she greets. She wants to know the probability that she gets the bonus if she greets 7 customers today. To determine this, she uses a random number generator. The following table shows 50 sets of 7 digits. For each digit, Kim assigns the numbers 0 and 1 to selling a car and the numbers 2 through 9 to not selling a car.The experimental probability of Kim getting the bonus if she greets 7 customers today is _______. write different Betweens Three point starter and four point starter~Ty ~ 5>x/5 Show all work in steps In your response, be sure to address all parts of the question. use complete sentences; an outline or bulleted list alone is not acceptable. answer all parts of the question that follows. a) identify one way in which the outcome of the second world war in asia contributed to political change in asian states in the second half of the twentieth century. b) explain one example of a nationalist movement in asia that used nonviolence to win independence. c) explain one way in which nationalist movements in asia were affected by cold war ideological rivalries in the second half of the twentieth century 15.) there was a recent fire that took place at the famous main street bakery. caleb happened to be walking by the bakery at the sametime the fire broke out. several people said they saw caleb set the building ablaze, but caleb was prevented from questioning thewitnesses in open trial. which amendment may have been violated?which amendment was violated The minimum amount of reserves that a bank is required by law to hold and not lend out is called its