Estimate the distance of a fading white dwarf supernova of luminosity 108lsun whose apparent brightness is comparable to that of a bright cepheid variable star 100 million light-years from earth.
Answers
Answer:
The supernova is a fraction of 0.7 of the size of the observable universe which is 10 billion light years away.
Explanation:
Apparent brightness(AB) = luminosity(L) / 4πr²
∴ Luminosity(L) = Apparent brightness(AB) × 4πr²
Ratio of the luminosity of cepheid and supernova with the same brightness will be written as;
\(\frac{L_{cepheid}}{L_{supernova}} = \frac{AB_{cepheid}(4\pi r^2)}{AB_{supernova}(4\pi r^2)}\)
\(= \frac{AB_{cepheid}(r^2_{cepheid})}{AB_{supernova}(r^2_{supernova})}\)
\(\frac{(r^2_{cepheid})}{(r^2_{supernova})}\)
Therefore, \(r_{supernova} = r_{cepheid}\sqrt{\frac{luminosity_{cepheid}}{luminosity_{supernova}} }\) ...................(a)
Since we already have \(r_{cepheid}\) as 100 million light year, substitute for luminosity of supernova and luminosity of cepheid as 10⁸\(L_{sun}\) and 10,000\(L_{sun}\) respectively in equation (a)
\(r_{supernova} = 100 million \sqrt{\frac{10^8L_{sun}}{10,000L_{sun}} }\) ==> 10 billion light year
the ratio of the distance to the size of the universe:
Supernova / Observable Universe = (10 / 14) billion light years
Supernova / Observable Universe = 0.7
The supernova is a fraction of the size of 0.7 of the size of the viewable universe that is 10 bn light years away.
What is supernova and how far is it. ?The supernova is a very powerful and luminous Steller explosion and is a transitional astronomical event and take place ducting the evolution and is one of the stages of the massive star. Triggered by the leakage of the gases.
The distance of the fading of a white dwarf supernova of brightness is 108 sun and has brightness as comparable to that star of the brightest Cepheid. The star has a variable of 100 million light years form earth. Thus distance of the nearest supernova is 50 billion light years and the observable is 10 billion.
Find out more information about the fading white.
brainly.com/question/15726471.
Related Questions
Draw an outline map of Nigeria and on it show and name
i)One area for oil palm and cocoa cultivation
ii)one forest belt and one savanna beltb) explain any four ways in which anyone of the crop named(a) above is important to the economy of Nigeria
c) what three problems face the cultivation of the crop named in (b) ?
SSCE NOV,1990)
Answers
A map with minimal information so that additional details can be added.
What is outline of a map?A map with minimal information so that additional details can be added. You can find the borders of each state in India using an outline map of the nation. For geography students, it is the ideal resource for learning about the many Indian states and their borders.An exchange rate in finance is the price at which one currency will be exchanged for another. Most often, currencies are national currencies; but, they can also be sub-national, as in the instance of Hong Kong, or supra-national, as in the case of the euro.(b) The importance of cocoa to the economy of Nigeria can be summed up in four ways:
(I) it generates foreign exchange for the nation;
(ii) it is used to make beverages like Bourn Vita;
(iii) it is used as a raw material for industries; and
(iv) it also employs some people in the cocoa industry.
(c) There are challenges associated with cocoa cultivation, including
(I) the issue of pests and diseases;
(ii) poor coco
The outline map of Nigeria is shown below,
To learn more about Nigeria refer to:
https://brainly.com/question/389878
#SPJ1
The site shown in this photograph is part of the cultural landscape of-
A. Southeast Asia
B. North Africa
C. Eastern Europe
D) Latin America
Answers
Answer:
latin america
Explanation:
i took the test and i got it right
The site shown in this photograph is part of the cultural landscape of Latin America. Landscapes that have been impacted, modified, or influenced by human activity. The correct option is (D).
What do you mean by the cultural landscape?
A cultural landscape, according to the National Park Service, is a region that has both cultural and natural resources, as well as any native or domestic animals that live there and are connected to a historical event, activity, or person. It may also display other cultural or aesthetic elements.
Historic locations, historically designed landscapes, historically constructed landscapes, and ethnographic landscapes are the four main categories of cultural landscapes. These categories are not mutually exclusive.
Therefore, the site shown in this photograph is part of the cultural landscape of Latin America. Landscapes that have been impacted, modified, or influenced by human activity.
To know more about the cultural landscape, visit:
https://brainly.com/question/14932766
#SPJ5
the height of a land surface above the level of the sea
Answers
Answer: elevation
Explanation: The height above sea level of a point on Earth's surface is its elevation. The difference in elevation between the highest and lowest parts of an area is its relief.
A ________ is a cone-shaped structure created by successive eruptions of volcanic materials such as lava or pyroclastic materials.
Answers
Answer:
Volcanic cone
Explanation:
I hope this helps. Good luck!
Imagine that the sun disappeared from the universe tomorrow. which sphere or spheres would this affect?
Answers
Answer:
This would affect all of the Earth's spheres: the atmosphere, hydrosphere, biosphere, and lithosphere.
Explanation:
hii! i’ll give brainliest pls help
Answers
Answer:
earthquake
Explanation:
cuz i see no flood or mud to call it landslide, nor tsunami or flood. if u look the ground is dry. but im not sure. sorry
Answer:
It is an earthquake that caused the destruction
Hope it helps, ^^
Political Issues of 2021
Answers
Answer:
Immigrant communities encounter many challenges including discrimination such as being told to “go back to your own country,” language difficulties as many immigrants don’t speak English upon their arrival, lower access to healthcare due to lower paying jobs without benefits and visa issues as some immigrants are undocumented, among many others. There is also the added challenge of isolation from the larger national community. Many immigrant families live within or very close to their immigrant community, which may reinforce a sense of separation.
Coping with thesechallenges can lead to mental health issues or mental illness, particularly for those with a pre-existing biological vulnerability to a mental illness.
Insufficient Mental Health Treatment
At the time of my parent’s immigration, mental health education in their homeland was non-existent. There was rarely any discussion of mental health. When they arrived in Canada, they could not speak English. There were no Portuguese-speaking mental health care providers. And the few Portuguese-speaking doctors there had very heavy patient loads and did not address mental health during their short consultations.
In some immigrant communities, mental health concerns are actively ignored and people are discouraged from seeking help. Their reluctance is often out of fear that others might find out or due to high treatment costs. Some cultures also have alternative treatment approaches to mental health care such as herbal remedies or spiritual practices. For example, some communities use culturally rooted practices of mindfulness and meditations or religious practices such as prayer.
Stigma In The Community
In the Portuguese community where I grew up, mental illness was highly stigmatized. Women and men were reluctant to speak about it. If and when women expressed emotional concerns, they were quickly dismissed. Men never talked about emotional concerns since community perception was that strong men should not be emotional. Talking about mental health outside the home was prohibited. Family members also heavily gossiped in our close-knit community, causing people to be guarded or secretive.
Growing up, I never heard anyone in the Portuguese community talk about mental health, including my parents. I was shocked to be diagnosed with a mental illness many years later. Upon reflection, I think I showed signs of mental health issues as early as high school, but neither I nor my parents knew how to identify it, much less how to seek help. Parents can play an important role in the mental health literacy of their children, but often immigrant parents are not in a position to help.
Stereotypes
Common stereotypes of immigrants—that we are less educated, more blue-collar, more conservative—can adversely impact our mental health. To avoid these perceptions, we sometimes disassociate ourselves from our immigrant community. This may lead to a loss of network support, which is another risk factor for mental health issues.
Explanation:
the coarsest portion of a river’s load is associated with _____________.
Answers
The coarsest portion of a river's load consists of large rocks and boulders.
What is the coarsest portion of a river's load?The coarsest portion of a river's load is associated with the sediment or particles that are the largest in size and have the highest weight. When a river flows, it carries along various materials such as rocks, sand, silt, and clay, collectively known as its sediment load.
The river's load can be classified into different categories based on the size of the particles. This classification is known as sediment sorting or sediment grading. Sediment grading is determined by the river's energy or velocity, which affects its ability to transport particles of different sizes.
The coarsest portion of the river's load is associated with the larger particles that require higher energy to be transported. These particles are typically composed of rocks and boulders. They are too heavy to be lifted and carried by the river's flow for long distances and tend to settle closer to the source of the river or in areas where the flow velocity decreases significantly, such as at the riverbed or along the banks.
The coarser sediment is usually found in the upper reaches of a river, where the flow velocity is higher, and the energy is sufficient to transport larger particles.
As the river flows downstream and the velocity decreases, it can no longer transport the larger particles, resulting in their deposition.
It's important to note that the size and composition of a river's load can vary depending on factors such as the geology of the river basin, the slope of the river, and the amount of water flowing in the river.
Additionally, human activities such as dam construction or sand mining can also impact the sediment load and its characteristics in a river.
Learn more about river's load
brainly.com/question/9912666
#SPJ11
what countries borders spain to the west?
Answers
Answer: Spain is bordered by Portugal in the west, by France and Andorra in the northeast. It shares borders with Morocco at the Spanish coastal exclaves of Ceuta and Melilla, the two permanently inhabited Spanish autonomous cities in Northern Africa.
Request: Please can I get Brainliest
1. What were the various myths that Americans created about the mound builders? Why were some of these myths harmful for American Indians? 2. What aspects of the Hopewell and Mississippian cultures defy traditional stereotypes of American Indians living north of Mexico? Explain what they are and why they are significant. 3. Why did Native Americans join the missions? What made the missions so destructive? What specific Spanish actions made the missions oppressive?
Answers
1. The various myths that Americans created about the mound builders were that the mound builders were not American Indians, but instead a lost tribe from another continent.
Some said that the mounds were built by European explorers from long before Columbus’s time. These myths were harmful for American Indians as they worked to erase the historical contributions of American Indians to North American culture.2. The Hopewell and Mississippian cultures defy traditional stereotypes of American Indians living north of Mexico in several ways. The Hopewell culture, for example, was a highly developed trading culture that constructed elaborate burial mounds.
The Mississippian culture was marked by large, walled cities with complex social and political structures. These cultures were significant as they showed that American Indians had complex societies with advanced technologies and that North America was not just a “wilderness” waiting to be tamed by Europeans.3. Native Americans joined the missions for various reasons, including the promise of food, clothing, and shelter.
However, the missions were ultimately destructive because they were designed to assimilate Native Americans into European culture and religion. The specific Spanish actions that made the missions oppressive include forced labor, beatings, and whippings, as well as the removal of Native American children from their families and communities to be raised in European-style boarding schools.
To know more about Mound visit
https://brainly.com/question/33204950
#SPJ11
How can we help otters survive?
Answers
The creatures can stay warm when swimming in chilly waters thanks to their thick, insulating fur. They feature flattened heads, long, slender bodies, and webbed feet for speedier swimming as well as short legs and webbed feet. The otter is propelled through the water by its long, powerful tail.
The subfamily Lutrinae of carnivorous mammals includes otters. All 13 of the otter species that are still alive are semi-aquatic, aquatic, or marine, and they all eat fish and invertebrates for food. The Mustelidae family, which also contains weasels, badgers, mink, and wolverines among other creatures, includes a branch known as the Lutrinae. Otters are regarded as friendly animals, but like most other animals, they keep their distance from humans, according to Nicole Duplaix, chair of the International Union for Conservation of Nature's Otter Specialist Group. River otters are bright and observant creatures. Their senses of smell and hearing are highly developed. They forage and explore their home range for the most of the day. All year round, they are active both during the day and at night, though they are more nocturnal in places with heavy human disturbance. Otters can interact with people since they reside close to lakes or ponds and burrow in ditches. It may seem unfathomable that otters might be deadly given their endearing appearance and playful behaviour. Otters can, however, become violent when necessary. The creatures occasionally go so far as to seek snakes in addition to their typical diet of fish.
Learn more about Otters here
brainly.com/question/23151311
#SPJ4
Given the following parallel lines and transversal, find the degree measures of ∠2 and ∠7 if ∠1 is 130°. Then, explain your reasoning using geometry vocabulary.
A.) ∠2 = 130o because ∠1 and ∠2 form a linear pair and are congruent. ∠7 = 50o because ∠1 and ∠7 are supplementary, since they are alternate exterior angles.
B.) ∠2 = 50o because ∠1 and ∠2 form a linear pair and are supplementary. ∠7= 130o because ∠1 and ∠7 are congruent, since they are alternate exterior angles.
C. )∠2 = 50o because ∠1 and ∠2 are vertical angles and are supplementary. ∠7= 130o because ∠1 and ∠7 are congruent, since they are corresponding angles.
D.)∠2 = 130o because ∠1 and ∠2 are vertical angles and are congruent. ∠7 = 50o because ∠1 and ∠7 are supplementary, since they are corresponding angles.
Answers
A.) ∠2 = 130o because ∠1 and ∠2 form a linear pair and are congruent. ∠7 = 50o because ∠1 and ∠7 are supplementary, since they are alternate exterior angles.
This is the correct answer. ∠1 and ∠2 form a linear pair, meaning they are adjacent angles that add up to 180 degrees. Since ∠1 is 130 degrees, ∠2 must be the remaining 50 degrees. ∠1 and ∠7 are alternate exterior angles, meaning they are on opposite sides of the transversal and outside the parallel lines. Alternate exterior angles are congruent, so ∠7 must also be 50 degrees to make ∠1 and ∠7 supplementary, adding up to 180 degrees.
For more such questions on exterior angles
https://brainly.com/question/30224279
#SPJ11
The Andes mountains were created due to
the subduction of the Pacific and South American plate
the collision of the Pacific plate and the North American plate
the collision of the Caribbean plate with the South American plate
None of above
Answers
Answer:
None of the above are correct. The Andes were created because of the subduction between the Nazca plate and South American plate.
Explanation:
The Andes are the longest and highest mountain range in South America, but also it is among the longest and highest in the entire world. It is a mountain range that stretches roughly in a north-south direction in the western part of the continent. Out of all of the major mountain ranges in the world, the Andes are the steepest of them all.
This mountain chain is located near the plate boundary between the Nazca plate and the South American plate. The smaller, oceanic Nazca plate subducts below the larger, continental South American plate. By doing so, the Nazca plate gets into the mantle, but it also manages to push up the crust of the South American plate, resulting in crust rising very high in elevation, eventually resulting in the formation of the Andes.
It is often thought that it is the Pacific plate that subducts below the South American plate, but that is not true, but a misconception because the Nazca plate is covered with the Pacific Ocean. The Nazca plate is an ancient plate that has been subducting for millions of years now and it will continue to do so for many millions of years in the future as well.
How does European Colonization cause conflict today?
Answers
Answer:
A lot <3
Explanation:
Colonialism's impacts include environmental degradation, the spread of disease, economic instability, ethnic rivalries, and human rights violations—issues that can long outlast one group's colonial rule.
What is the definition of physical weathering?
A) Chemical reactions produce new substances.
B) Mechanical processes add chemicals to create new substances.
C) Rock is dissolved by chemicals.
D) Mechanical processes break substances into smaller pieces.
E) Rocks fall apart.
Answers
Physical weathering is the process by which rocks and minerals are broken down into smaller pieces without any chemical change.
It occurs due to mechanical processes such as temperature changes, frost action, abrasion, and pressure release. Physical weathering can lead to the disintegration of rocks into smaller pieces and cause their exposure to chemical weathering. This process occurs naturally and is a crucial step in the formation of soil and the cycling of nutrients. Unlike chemical weathering, physical weathering does not produce new substances but instead breaks down the existing ones. Some examples of physical weathering include freeze-thaw cycles, wind abrasion, and water erosion. Overall, physical weathering is an essential process that plays a significant role in shaping the Earth's landscape.
To learn more about weathering, visit:
https://brainly.com/question/29450470
#SPJ11
“Commercial production and sale of goods” is one definition for which term? factory capitalism economy industry
Answers
Answer:
Hi Lovelys!!
Answer is down below!!
Explanation:
The Answer is C. Industry
Economic activity concerned with the processing of raw materials and manufacture of goods in factories.
Hope this helps!! =3
Have a wonderful day, evening, or night!! <3
Which mountain range is not located in the western region of North America?
Rocky Mountains
Appalachians
Cascades
Sierra Nevada
Please ASAP!!!
Answers
studies about logging in forest would almost certainly touch on
Answers
Studies about logging in forests would almost certainly touch on Human-environmental interactions because humans and the environment are intertwined. Logging can affect not only the ecosystem but also the lives of individuals and communities that rely on the forest for survival.
Human activities like logging and deforestation have a significant impact on the environment, leading to deforestation, soil erosion, and biodiversity loss. When trees are cut down, it affects the ecosystem in a variety of ways, causing habitat destruction, soil erosion, and the loss of biodiversity. Because forests are home to many species, including flora and fauna, logging has a significant impact on their habitat. The impact of logging on human populations that rely on forests for survival can't be overlooked either.
Indigenous people, for example, depend on the forest for their livelihood, including gathering medicinal plants and other resources. Logging companies and policies can thus have a negative impact on the cultural and social lives of these individuals and communities. Moreover, the human-environmental interaction has a direct relationship with logging. If there is an increase in demand for logging, humans will log more trees, which can result in habitat destruction and deforestation.
Conversely, if there is a decrease in demand for logging, humans will log fewer trees, reducing the environmental impact. Logging in the forest can't be stopped, but it can be regulated to protect the environment and human communities. Thus, studies about logging should not only focus on the environmental impact but also on the social impact, especially on the lives of human populations that depend on forests. This would help policymakers understand the effects of their policies and create more comprehensive strategies that take human-environmental interactions into account.
Know more about deforestation here:
https://brainly.com/question/1494204
#SPJ8
??ddbdldksksjdkdndbsjsoapqkdjdud
Answers
Answer:
A cheerful teen willing to help,
stay salty...
Explanation:
Angles in a heptagon equals 900°
i.e (n-2)×180 where n is substituted for the number of sides.
Find the sum of the remaining angles and subtract it from 900°
120+125+138+82+95+3x+x=900°
560°+4x=900°
4x=900°-560°
4x=340°
Divide both sides by 4
x=85°
while 3x= 255°
What is the value of x
(4x+7) 5(x-4)
Answers
The value of x should equal 27.
STEPS: 1.) Distribute 5 through the parentheses: (4x+7)x5(x-4) --> (20x+35)x(x-4)
2.) Simplify the expression 20x^2-80x+35x-140
3.) Collect like terms, 20x^2-80x+35x-140 --> 20x^2-80x+35x-140 = 20x^2-45x-140
I needz helps, Reee (Beeee)
Answers
Answer:
ii and iii are correct
i is pointing towards the Atlantic Ocean, not the Pacific.
what is a cover crop
Answers
Answer:
why i help you ....did you pay me for this ...
The US has a larger area than China, but China has a larger population.
The most likely reason today’s population is growing in certain areas or countries is because
Answers
The most likely reason for today's population growth in certain areas or countries is because of a combination of factors, including increased access to healthcare, improved living conditions and technology, and declining infant mortality rates. Additionally, some countries may have higher birth rates due to cultural or religious beliefs, as well as government policies that encourage or discourage population growth. Migration, both domestic and international also play a role in population growth or decline. In the case of China, it has had a one-child policy for several decades that may have contributed to its population growth.
How is Akhenaton, Nefertiti and Three Daughters an unprecedented portrayal of pharaonic likeness?
Akhenaton, Nefertiti, and three daughters, from Amarna, 18th Dynasty, ca. 1353-1335 BCE.
https://smarthistory.org/house-altar-depicting-akhenaten-nefertiti-and-three-of-their-daughters/
Answers
Akhenaton, Nefertiti and Three Daughters is an important work in the history of ancient Egyptian art. It represents a significant departure from the traditional forms and styles of pharaonic art, and is a testament to the innovative spirit of the Amarna period.
The artwork of Akhenaton, Nefertiti and Three Daughters is an unprecedented portrayal of pharaonic likeness because it deviates significantly from the traditional styles and forms of pharaonic art. The work is unusual in a number of ways, including the portrayal of the royal family, the style in which it is executed, and the iconography used to represent them.
Akhenaton, Nefertiti and Three Daughters is an unprecedented portrayal of pharaonic likeness in a number of ways.
The work is unusual in terms of the portrayal of the royal family, the style in which it is executed, and the iconography used to represent them. This can be seen in the depiction of the figures, the use of color and line, and the way in which the figures are arranged within the composition.
Overall, Akhenaton, Nefertiti and Three Daughters is an important work in the history of ancient Egyptian art. It represents a significant departure from the traditional forms and styles of pharaonic art, and is a testament to the innovative spirit of the Amarna period.
Know more about the ancient Egyptian art
https://brainly.com/question/15608769
#SPJ11
Which part of indiana has the most evidence of glaciers?.
Answers
Glaciers have left an indelible impression on the landscape of Indiana. As a result, certain regions of the state have more evidence of glaciation than others. The southern two-thirds of the state has little evidence of glaciation, while the northern third has an abundance of it. The part of Indiana that has the most evidence of glaciers is the Northern part.
The evidence of glaciers in the northern third of Indiana is plentiful. In the northern portion of Indiana, terminal moraines and other glacial deposits are abundant, indicating the maximum extent of the last glaciation. The Valparaiso Moraine, which extends from the north-central part of Indiana into the Chicago area, is one of the most prominent and well-known moraines. Indiana also has a lot of lakes that were created as a result of glacial activity.
Some of the most famous include Lake Wawasee and Lake Maxinkuckee. The evidence of glaciation is not as plentiful in the southern two-thirds of the state. There are a few lakes in southern Indiana, but they are mostly man-made and not as old as the ones in the northern part of the state. In conclusion, the part of Indiana that has the most evidence of glaciers is the northern third of the state.
To know more about impression visit:
https://brainly.com/question/31444615
#SPJ11
Which rock is sedimentary in origin and formed as a result of chemical processes?
A)
granite
B)
shale
C)
breccia
D)
dolostone
Answers
Answer: Shale
Explanation: Shale is sedimentary and is formed chemically
what coast is tallahassee located
Answers
Answer:
Tallahassee is the capital of Florida. Therefore, that would be in the east since is is a eastern state.
Explanation:
Hope this helps!
Help this is due in 30 minutes!!
Answers
Which of the following did the 1850 Act for the Government Protection of Indians NOT do?
I. Protect California Indians
II. Effectively enslave California Indians
II. Dispossess California Indians of their lands
IV. Indenture California Indians
Answers
The 1850 Act for the Government Protection of Indians did not Protect California Indians effectively, so the answer is the option I. Protect California Indians.
This law, which was passed in California in 1850, allowed for the indenture of Native Americans and placed them in a position of quasi-slavery. They were forced to work under harsh conditions and were often subject to mistreatment. It also allowed non-Indians to take control of their land, which was a significant problem for California Indians.
This law was aimed at addressing what the authorities saw as the "Indian problem" by forcing Native Americans to live in designated areas and take up farming, as well as requiring them to work for non-Indians without pay. The law aimed to strip California Indians of their land and resources, making them easier to control and suppress. As a result, the law did not effectively protect California Indians.
To know more about quasi-slavery visit: brainly.com/question/567921
# SPJ11
When you set up a crane near previously disturbed soils and soils that tend to shift, such as sand and gravel, the crane should not get closer than the depth multiplied by:_____.
Answers
According to OSHA recommendations (but no formal standard), the ratio should be 1.5:1. In the United States, the answer may be 6 metres.
The distance to the top of the slope > depth of the excavation, or at least 1.5 metres.
So the answer is 1.5m
What is Soil?
The mixture of organic matter, minerals, gases, liquids, and living things that makes up soil—also referred to as earth or dirt—supports life. (In some scientific definitions, the distinction between dirt and soil is made by limiting the former term to displaced soil only.) The word pedolith, which is frequently used to describe soil, is derived from the ancient Greek word v, which means "ground, earth," and means "ground stone" in the sense of foundation stone.
In addition to a porous phase that contains water and gases (the soil atmosphere), soil consists of a solid phase made up of minerals and organic matter (the soil matrix) (the soil solution).
The three states of soil are thus solids, liquids, and gases.
To learn more about Soil
https://brainly.com/question/25146263
#SPJ4