How do electromagnets differ from regular magnets?

a) they can be turned on or off

b) Their polarity can be reversed


c) Their strength can be changed


d) All of the above

Answers

Answer 1
their polarity can be reversed
Answer 2

it is D:  All of the above


Related Questions

what is b.p an abbreviation of

Answers

B.P is the abbreviation of British patrol. It is a gas company


Which of the following was NOT one of the three phases of industrialization?

Answers

Hello!

Workers were sent to school to learn special trades was not one of the three phases of industrialization.

Industrialization consists of three distinct phases:

1) Big jobs are divided into smaller, more specialized ones.

2)  The specialized workers from phase 1 are put together in large factories forming a production line. The efficiency is greatly increased in this phase.

3) Machinery replaces workers or helps them to perform the production more quickly and better.

As you can see,  Workers were sent to school to learn special trades is not a phase of industrialization. 

Have a nice day!

What is one thing that the leaders of Saudi Arabia have not done with their oil revenues?

Answers

The one thing that leaders of Saudi Arabia have not done with their oil revenues is to ensure good political structures to back up stability in Saudi Arabia. 
from wikianswers.com

built the country’s entire infrastructure.

1. Sustainability is defined as __________. (1 point)

the method of using a resource to ensure its long-term availability

ensuring that natural resources are productive and supported

the greatest amount of deforestation allowed by law



2. Which of the following is an example of conservation? (1 point)

recycling

using solar power

logging

A and B



3. The Endangered Species Act does which of the following? (1 point)

pays farmers in Costa Rica for protecting natural resources

protects threatened and endangered animal populations by law

encourages communities to recycle their waste materials

Answers

Sustainability is defined as the method of using a resource to ensure its long-term availability. So the correct option for 1 is A.

What is sustainable development?

The term "sustainable development" initially originated in 1987 with the publishing of the Brundtland Report, which sought to find answers to the issues brought on by industrialization and population expansion and warned of the harmful environmental effects of economic growth and globalization.

Climate change, water shortages, inequality, and hunger are just a few of the issues that must be addressed on a global scale in order to be overcome. Sustainable development is an effort to combine social advancement with environmental balance and economic growth.

The Sustainable Development Goals, a call to action to conserve the environment and ensure human welfare on a global scale, were adopted by the United Nations as part of a new sustainable development blueprint known as the 2030 Agenda. Individuals, companies, government agencies, and nations from all over the world must actively participate in order to achieve these common goals.

Therefore the correct options are 2 - D, and 3 - B.

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Final answer:

Sustainability refers to using resources in a way that meets current needs without compromising future generations' ability to meet theirs. Conservation involves practices like recycling and solar power, and the Endangered Species Act is a law protecting endangered species. Both concepts emphasize the interconnectedness of humans and the environment.

Explanation:

Sustainability is defined as the use of a natural resource in a way that meets the needs of the present and also preserves the resource for use by future generations. Conservation exemplifies sustainability through practices like recycling and utilizing renewable energy sources such as solar power. The Endangered Species Act is a legal framework designed to protect threatened and endangered animal populations by law.

Examples of renewable resources include sunlight and wind, which are not depleted when used, thereby providing a sustainable source of energy. Sustainable practices in resource use, such as harvesting wood and cork in a way that does not prevent future generations from meeting their needs, directly support the health of ecosystems—the benefits of which humans are intricately connected to.

Conservation efforts often include establishing protected areas to maintain biodiversity and provide opportunities to appreciate nature with minimal impact. These efforts form an integral part of a sustainable ethic, emphasizing the interconnectedness of humans and nature and the necessity to practice environmental stewardship to ensure long-term availability of resources.

which of the following men were presidents during the roaring twenties

Answers

Warren G. Harding
Calvin Coolidge 
Herbert Hoover 

Final answer:

During the Roaring Twenties, the U.S. presidency was held by Warren G. Harding, Calvin Coolidge, and Herbert Hoover, marking a period of Republican leadership focused on business support and isolation from foreign affairs.

Explanation:

The Roaring Twenties, a period of significant economic growth and cultural change in the United States, was presided over by several presidents. Among the options provided, Calvin Coolidge, Warren G. Harding, and Herbert Hoover were the men who held the office of President during the 1920s. Warren G. Harding served from 1921 until his death in 1923, at which point Calvin Coolidge took over the presidency, serving until 1929. Herbert Hoover then succeeded Coolidge, serving from 1929 to 1933, though his term is more remembered for the onset of the Great Depression rather than the prosperity of the Roaring Twenties.

The weather is warm and dry. What changes would a cold front bring?

A. extended period of rain or snow

B. several days of gray skies

C. dry air and sunny skies

D. rain or thunderstorms

Answers

D. rain or thunderstorms

Answer:

D. Rain or thunderstorms.

Explanation:

A Cold Front often brings thunderstorms.  And since it has been sunny for a while, it will certainly bring a rather large thunderstorm.

the upward movement of air in the atmosphere generally causes the temperature of that air to

1)decrease and become closer to the dewpoint
2)decrease and become farther from the dewpoint
3)increase and become closer to the dewpoint
4)increase and become farther from the dewpoint

Answers

The answer is 1.) it decreases and becomes closer to the see point.

The upward movement of air in the atmosphere generally causes the temperature of that air to decrease and become closer to the dewpoint. The correct option is A. Air expands as it rises because air pressure drops as altitude rises. Air adiabatically cools when it expands.

What happens to air temperature when it rises?

The air above you gets thinner as you go higher up, which lowers the pressure. The temperature drops as the pressure drops, which causes the air molecules to spread out more (air expands). The temperature drops more slowly as altitude increases when the humidity is at 100% due to snowfall.

Cooler, denser air is drawn toward the surface of the earth by gravity. The less-dense air is forced into motion and causes to rise as the denser air spreads and undercuts it as it approaches the earth's surface.

Thus, the ideal selection is option A.

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All energy resources have limitations. Some renewable energy resources are only effective in certain locations. Which is the BEST location for a home powered by photovoltaic cells?
A) Maine
B) Alaska
C) Oregon
D) Arizona

Answers

the answer is choice D) hope this helps :)

The BEST location for a home powered by photovoltaic cells is  Arizona. Thus the correct option is D.

What are resources?

Resources are referred to as things or physical substances which are essential for the survival of mankind. This resource helps in sustain by providing food, water, shelter, and so on.

These resources are categorized as renewable sources and nonrenewable sources based on their structure and characteristics. All energy resources are renewable sources and have limitations. Some renewable energy resources are only effective in certain locations.

South-facing solar panels generate the greatest power overall, but they also generate the most during the noon. It's best for solar panels to face south or west in Arizona. This is due to the fact that solar panels facing south tend to absorb more sunlight.

Therefore, option D is appropriate.

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The model shows global air circulation. Identify the wind directions that are correct. More than one answer!
A) 1
B) 2
C) 3
D) 4
E) 5
F) 6

Answers

hello

The answer is 1 and 4

Have  a nice day

The models that show global air circulation are the arctic circle and tropic of Capricorn that identify the wind directions.

What is wind direction?

Wind direction is learned by the direction it is coming from. A north wind, for instance, blows from the north to the south. Onshore and offshore winds are the exceptions.

From the image given below, the arctic circle and tropic of Capricorn are the two models that shows global air circulation. Typically, wind direction is expressed in degrees or cardinal directions. The prevailing winds are those that are in force at any given time due to the Earth's axis rotation.

Therefore, option A, and D are correct.

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In a paragraph of 125 words, discuss the relationship between Ukrainian history and geography.

Answers

The relationship between Ukrainian history and geography throughout history has been a consistent border. Ukraine has been ruled by different governments, but their borders remained the same. Ukraine is one of the biggest country in Europe and was once part of Russia with its borders. They are like bridges between European countries.

Answer:

Ukraine's history and geography remain the same throughout history. Even though Ukraine has been ruled by different governments their borders have remained the same. Ukraine is one of the biggest countries in Europe and was once part of Russia. Ukraine is located between Europe and Asia. Since Ukraine's soil was very fertile, the Russians took control of Ukraine so that later the Soviet Union would be able to use it. The Soviets controlled all of the farms to feed their people. Since the Soviets needed power, they decided to build a nuclear power plant on Ukraine soil. However, after the power plant was established there was a terrible accident that was the worst nuclear accident in the history of the world. Word count: 121

Which three elements are essential for growing crops?

environmental hazards, moisture retention, refinement
gasoline additives, coal-burning plants, seed corn
grain elevators, soil stability, carbon dioxide
sunlight, water, soil

Answers

The answer is kinda obvious, sunlight, soil, and water

to protect herself and others from potential infectious diseases , she must wear

Answers

She must wear a mask and gloves.

The mask would prevent her from inhaling pathogens that get transferred viraly, while latex gloves would prevent pathogens from entering through her skin, or if she later decides to put her fingers in her mouth or anything similar.

If she has a wound on her hands, the gloves will also prevent the blood from mixing with her own and prevent disease.

Which of the following statements best describes fertility rates in sub-Saharan Africa? A. Fertility rates are among the lowest in the world, so populations are shrinking. B. Fertility rates are among the highest in the world, so populations are growing quickly. C. Fertility rates are at the world average, so populations are growing at an average rate. D. Fertility rates are at the replacement rate, so populations are staying about the same.

Answers

The correct answer should be
B. Fertility rates are among the highest in the world, so populations are growing quickly.

Answer:

its b

Explanation:

What do frogs say when they meet each other?

Answers

the answer is: warts new with you

Answer:

Warts New With You?

Explanation:

Help Please????
True or False:
To the people of ghana, the traditions of their ancestors are still an important part of daily life

Answers

True.It is true Ghanaian people still practice the traditions of there ancestors.For instant, they still do traditional blessings, welcome ceremony, naming ceremony, durbar of the chiefs.23% of the people still practice traditions religion.
True.
It is true Ghanaian people still practice the traditions of there ancestors. For the instant, they still do traditional blessings, welcome ceremony, naming ceremony, durbar of the chiefs.23% of the people still practice traditions religion.
Explanation:
Traditional blessings are given by the gods and communicated by non-secular leaders to those desire steering, protection or prosperity. Ghanian politicians marked this necessary transition by replacement the territory's colonial label with the name of a good autochthonic civilization of the past. whereas somewhat legendary, these evocations of noble origins, together with an great cultural heritage and a militant nationalist movement, have provided this ethnically various country with unifying symbols and a way of common identity and destiny. The basic diet consists of a starchy staple consumed with a soup or stew. Ghana may be a land of festivals that are a colorful and spirited a part of our culture. Festivals and durbars ar command in numerous components of the country to celebrate the history of the individuals, supply thanks and mark necessary rites.


In the diagram, m∠3 = 120° and m∠12 = 80°. Which angle measures are correct? Check all that apply. m∠1 = 60° m∠13 = 80° m∠6 = 80° m∠5 = 60° m∠10 = 120° m∠ 14 = 100°

Answers

Answer:

A, B, D, F

Explanation:

French and English colonial competition in North America was mainly _____. political social economic cultural

Answers

was mainly .economic political social economic cultural

French and English colonial competition in North America was primarily economic, driven by the desire to control trade and resources, such as the fur trade and cash crops.

The competition between French and English colonial powers in North America was mainly economic. Both nations were deeply involved in establishing economic interests in the hemisphere, shaping their colonial administrations around lucrative trade opportunities, such as the fur trade for the French, and tobacco and other cash crops for the English. While political and social elements certainly played roles, the primary drive for rivalry was the control of trade and resources, influencing territorial expansion and colonial policies.

Even as political motives intertwined with economic ones—given that control over territory translates into control over economic resources—the French and the British colonial experience in North America is largely characterized by economic competition. This rivalry eventually culminated in military conflicts, such as the Seven Years War, which was fundamentally rooted in the contest for economic supremacy and territorial control.

For any hazard one must learn about the ________________________ plans for your area. And develop for your own family as well.

Answers

Hello,

Here is your answer:

The proper answer to this question is "evacuation plan".

Here is how:

When a family makes a evacuation plan in case of a hazard is making sure the whole family knows what to do in case they get separated.

Your answer is evacuation!

If you need any or help feel free to ask me!

Hope this helps!

Which Indian group lived in houses on stilts

Answers

While the text does not directly mention Indian groups living in houses on stilts, this practice has been adopted by various indigenous tribes in flood-prone areas for practical environmental adaptation.

While the text provided does not specifically mention Indian groups that lived in houses on stilts, it is known that in various tropical and flood-prone areas around the world, including parts of India, housing on stilts has been a common architectural solution. Such constructions are designed to protect against flooding and to provide ventilation. In the context of India, this type of housing could be seen in regions subject to seasonal flooding like those near the Brahmaputra River and other low-lying areas that experience heavy rainfall. Although it is not mentioned directly here, looking at global indigenous practices, it can be noted that building on stilts has been a practical adaptation to environment and has been employed by various cultures, including some tribes in the northeastern region of India and in Southeast Asia.

What is the official language of Mozambique and Angola? English French Portuguese Spanish

Answers

I would say Portuguese
I have a friend who knows this kind of stuff so...

im 100% positive its portuguese

The map shows average wind speeds throughout the United States.

Answers

Where is the map for wind speeds?

The economy of Brazil has changed since the 1940s in all of the ways described except

Answers

faster than any country except the United States. In 1500, the Brazilian population was the same as in Portugal. Now it is 17 times as big. The creation of such a large geopolitical entity is ... try to decide whether and how far Brazil has underexploited its potential for growth of income ... economic policychanged drastically.

most Brazilians work on subsistence farms


Which is an important difference between the five themes and the several subfields in geography

Answers

Sub fields focus more on traditional breakdowns of studies.

Subfields provide more emphasis on conventional study breaks.

What is geography?

This understanding of social and physical processes is placed in the context of location by geography, which acknowledges the vast diversity in cultures, political systems, economies, landscapes, and habitats throughout the world and explores the connections between them.

Many of the more recent advances in human geography are based on an understanding of the reasons for variations and inequities across locations and social groupings.

Physical geography concentrates on geography as an Earth science, utilizing biology to comprehend patterns in the world's flora and fauna as well as mathematics and physics to comprehend the motion of the Earth and its interactions with other solar system bodies. The geography of the environment is also included.

The human, political, and cultural branch of geography, sometimes known as anthropogeography, is concerned with the social science and non-physical elements of how the world is organized.

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Steps in the Juvenile Justice Process 1. Arrest or custody - “Miranda Rights” administered - Parents/guardians notified - Release or detained 2. Probable Cause Hearing - Must be within 48 hours of custody - Must be notified of charges, offered opportunity to an attorney - Judge decides whether youth is to be released or detained 3. Adjudicatory Hearing - Must be ten days or less for detained youth, 60 days or less for released youth - Evidence is presented by both sides before a judge (no jury) - Judge decide guilt or innocence 4. Dispositional Hearing - Judges decides punishment/consequences - Often immediately after adjudicatory hearing - Can transfer to Superior Court if a serious felony Which section BEST refers to the right of the accused juvenile to "remain silent""

Answers

The first section refers to the right of the accused juvenile to "remain silent." The Miranda rights is a warning to the accused from the officers that they have the right to remain silent for anything they say can and will be used in the court of law. They are issued this warning when the police plan to interrogate the suspect. The accused has the right to invoke it or revoke it. 

Answer:The crime is a serious felony.

Explanation:This could be something such as armed robbery with a firearm or even murder.

The existence of coal beds in Antarctica indicates that the continent once had

Answers

If Antarctica has coal beds, and coal is formed from pressured carbon, then it indicates that Antarctica once had living organisms. Because living things are carbon based.

Answer:

How does the presence of coal on Antarctica indicate a climate change?

 

The discovery of a new coal deposit means people will be able to use this fossil fuel longer.

 

Coal deposits can tell scientists what the composition of the atmosphere was in the past.

 

Coal forms from the remains of plants that lived in tropical swamps millions of years ago.

 

Coal is burned for fuel and it releases carbon dioxide into the atmosphere.

Explanation:

Answer Coal forms from the remains of plants that lived in tropical swamps millions of years ago.

Misplaced fossils are another way scientists can tell the climate of a region has changed. Fossil corals and other marine organisms have been found in abundance in parts of Europe not covered by water. However, these fossils show that a shallow, tropical sea must have once covered this region. Coal deposits in Antarctica also indicate a change in climate. Coal deposits were created when giant plants that lived hundreds of millions of years ago in areas of tropical, swampy forests died and formed layers at the bottom of the swamp.

2 causes of climate change

Answers

2 causes of climate change are pollution and changes in land uses. Land use changes cause man-made disasters like the dust bowl of the 1930's. Pollution like greenhouse gasses causes solar radiation that bounces comes from the surface of the earth but doesn't go to space.
I hope my answer helps you!
Hello,

Here is your answer:

Pumping to much carbon Dioxide in the air causes climate change:

1. Volcanos

2. Forest Fires

3. Machines such as (Cars, trucks, motorcycles, etc...)

4. Factories

(Remember I gave two causes from nature (1, and 2) & causes from humans (3, and 4).

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit
 

What is true about the geography of the north european lowland?
a. it contains the mountain ranges of the alps.
b. it contains excellent farmland.
c. it does not include southeastern england.
d. it has historically functioned as a barrier to contact and communication due to its marshy conditions?

Answers

It is true that the geography of the north european lowland is that it does not include southeastern england. So the answer is letter C.
Final answer:

The North European Lowland contains excellent farmland but does not include the Alps. It does include southeastern England, and has historically been a region of communication, not isolation.

Explanation:

Regarding the geography of the North European Lowland, the statement that it contains excellent farmland is correct. The North European Lowland is an expansive, fertile plain that extends from the British Isles to Russia, hence it does provide excellent farmland. This region, however, does not contain the mountain ranges of the Alps; these mountains are located in south-central Europe. Moreover, the North European Lowland does include a significant portion of southeastern England. Historical marshy conditions have not served as an overall barrier to contact and communication, rather facilitating it due to numerous navigable rivers and channels.

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With the rise of nation-states, new countries discovered nationalism, or a pride in common ethnic heritages, cultures, and beliefs. However, nationalism often created negative consequences. In a few sentences, explain the drawbacks of nationalism. What might go wrong?

Answers

It is certainly true that nationalism has its upsides. A national consciousness led to the creation of states (instead of feudal regions or city-states) and remembering traditions and your history is important because it connects you to other people. However, being a national means identifying as something; hence , you are different from others. At some points, nationalism leads to despising other populations either because they are different and have different traditions or because they are simply unknown to us. In its worst instances, nationalism has led to nazism and genocide; the notion that a nation is better than another is the start of such actions. Hence, it is important that despite having a proud knowledge of our history and our identity, we also reach out towards other cultures, accept them and learn from them.

Answer:

    Nationalism is a wonderful thing to practice. However, many things can go wrong and lead to serious consequences. A drawback of nationalism might be that your nation's heritage/culture may be different than that of the other nations. Although now, we see nothing wrong with that, it was a big problem back then. In most situations, you had to be the same religion or participate in the same culture as everyone else. If you chose to participate in your own religion, you would either have to be discreet or face the consequences. Those consequences could be jail time, being stoned, or worse.

    Another drawback of nationalism would be a lack of following tradition. This kind of relates back to the first drawback I mentioned. Most nations have their own traditions practiced by everyone living there. For example, they may have holidays that they celebrate. Just like we celebrate Christmas, Thanksgiving, Easter, and other holidays as well. But there is a small difference. As of the present, we can pick and choose which holidays to celebrate and which holidays not to celebrate. However, Back then, you didn't really have a choice. Even if you didn't want to, you would be forced to celebrate a holiday. Tradition was taken very seriously back then. If you refused, the consequences would be the same as the ones I listed earlier. Maybe even worse.

WARNING:

DO NOT COPY WORD FOR WORD. YOU WILL BE ACCUSED OF PLAGARISM!! If you use it, please change up the wording! Thank you!

People from rural areas who come to Brazil’s cities usually have

Answers

People from rural areas who come to Brazil’s cities usually have : little work experience

Answer:

The answer is little work experiance.

Explanation:

Answer for gradpoint

Scientists use seismic waves to locate the epicenter.
True or False

Answers

i would say it is true


Hello!
----------
The answer is true.
----------
Have a great day!
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