You have an isotope with a half-life of 200 years How much of the original material
is left after 600 years?

Answers

Answer 1

Answer:

[tex]\frac{1}{8}[/tex] of its original size would be left

Explanation:

The half life of the isotope is the time required for it to decay to half of its original size.

Half life of the isotope = 200 years

So that, after 600 years the material that would be left would be;

let the original size of the material be represented by x.

200 years = [tex]\frac{1}{2}[/tex] x would remain

400 years = [tex]\frac{1}{4}[/tex] x would remain

600 years = [tex]\frac{1}{8}[/tex] x would remain

Thus after 600 years, [tex]\frac{1}{8}[/tex] of its original size would be left.


Related Questions

those people who lived under mountain what does that mean for them?

Answers

Hill people, also referred to as mountain people, is a general term for people who live in the hills and mountains. This includes all rugged land above 300 metres (980 ft) and all land (including plateaus) above 2,500 metres (8,200 ft) elevation. The climate is generally harsh, with steep temperature drops between day and night. High winds, runoff from melting snow and rain cause high levels of erosion and thin, immature soils. Climate change is likely to place considerable stress on the mountain environment and the people who live there.

People have used or lived in the mountains for thousands of years, first as hunter-gatherers and later as farmers and pastoralists. The isolated communities are often culturally and linguistically diverse. Today about 720 million people, or 12% of the world's population, live in mountain regions, many of them economically and politically marginalized. The mountain residents have adapted to the conditions, but in the developing world they often suffer from food insecurity and poor health. They depend on crops, livestock and forest products, and tend to be poor. In the developed world the mountain people are generally prosperous, and the mountains may be used for tourism and outdoor recreation. Mining is also widespread and dates back to the pre-Christian era.

In parts of the developing world the mountain communities depend on remittances from young men who have gone to work in the lowlands or overseas. Although 70% of mountain people live in rural areas, the rest live in cities, including large cities such as Mexico City, with a population of around 21 million. The cities attract temporary or permanent migrants from the rural areas. The smaller cities are more connected to the mountain culture and economy than the larger ones.

Malaria and AIDS are common in many African countries in part because governments

A. believe that these diseases with disappear on their own
B. avoid helping fight diseases for religious reasons
C. Do not think that these diseases present major problems to the population
D.have little money to spend on programs to fight these diseases.

Answers

Answer:

answer d

Explanation:

because African countries are having little money and they can create campaign

Have little money to spend on programs to fight these diseases

The alpine tundra biome can be seen shaded in the blue on the map above. Which of the following best explains the presence of this biome in sub Saharan Africa
A. Alpine tundra found in high elevations like mountains


B. Alpine tundra is found in dry locations like


C. Alpine tundra is found in what locations like rainforest


D. Alpine tundra is found in hot location to like tropics




please help


I will give brainless and five star and 10 points for the best answer


I don't want to see a link as a n answer

Answers

I say it is d I’m sorry if wrong but that what j think

The atmosphere on Mars is mostly made up of carbon dioxide, and the surface of the planet is too cold for humans to
handle.
O True
False

Answers

Answer:

False

Explanation:

Answer:

true

Explanation:    

7. Which hazard is caused by rising temperatures?
Volcano
Earthquake
Tsunami
Drought

Answers

Droughts: Droughts are usually caused by high temperatures and to super dry weather

help me please I really don’t know This!

Answers

Answer:

pull of the moons gravity

The city with the least amount of water vapor in the air is City B. The city with the greatest amount of water vapor in the air is City A. The city with the lowest relative humidity is City B. The temperature to which you would need to cool City C to reach 100% humidity is 21 degree F. To reach the same relative humidity as City A, the temperature of City D would need to rise by___degrees.

Answers

Answer:

1234567890897

Explanation:

787

what
is
energy does do​

Answers

Answer:

energy is the capacity to do work.

Explanation:

________________have stinging cells

Answers

I believe that answers to your question is

Cnidarians have stinging cells

(Not sure)

I hope this helps :)

The form of the government best fits the description

A. Democracy

B. Theocracy

C. Autocracy

D. Anarchy

please help

I will give BRANLIEST and 5 * and 10 points for the best

I do not want to see a link as a answer if I see a link as a answer I will report

Answers

Answer:

Id say C. Autocracy

Explanation:

Autocracy is basically like a dictator and therefore dictators can put restrictions on the press and rig elections while ruling with brutality (ex. Stalin, Mao Zedong,).

According to the Roman Historian Livy, what is NOT an advantage of location of Rome as a city.

O A central location in Italy

O Access to valuable metals such as gold

O Access to the sea for commerce from abroad

O Produce provided by the inland regions along the Tiber River

Answers

1. Central Location in Italy was not an advantage of Rome as a city

Which of these can be found in soil?

Answers

I don’t know honey bun

Answer:

there are many things that can be found in soil, whether it is bacteria, fungus, microbes, or plants. all soil is made up of inorganic mineral particles, organic matter (including living things), air and water.

Explanation:

hope this helps! have a great day :)

1. Which of the following is a national resource?
(a) gold and minerals
(b) the money in the Bank
(c) the people
(d) all​

Answers

Answer:

a) gold and minerals

Explanation:

A national resource is a resource controlled by the government, whether it is at the state or national level. For example, wildlife, railways, gold and minerals. Therefore, correct option is A.

The government can even acquire private property for public use within political boundaries, so all resources within political boundaries belong to the country are national resources.

Resources can be categorized into four types based on ownership.

1 - Individual Resources : Individual resources are those owned by private individuals. For examples : house, car, book, etc.

2 - Community Resources : Resources that belong to all community members. Owned by all members of the community. For example : public parks, play ground, etc.

3 - National resources : Those resources that are under the control of a state or union government are considered national resources. For example : all mineral resources, like water, land, forest and wild life.

4 - International Resources : There are international institutions that control all areas that are not under national control. As an example, areas beyond the exclusive economic zone are considered part of the open ocean and can only be utilized by international institutions if they are given permission by them.

Thus, gold and minerals are national resources. Because, they are under the control of a state or union government & are considered as national resources.

learn more about government here :

https://brainly.com/question/10785628

#SPJ2

demerits of possibilism​

Answers

I would answer this question but someone already did so...

Analyze the map below and answer the question that follows.


The humid subtropical climate region is labeled with which number on the map above?
A.
1
B.
2
C.
3
D.
4

Answers

I believe the answer is A I am not completely sure

Answer:

2

Explanation:

Germany has always been an ally of the United States
True
False​

Answers

Answer:

False

Explanation:

It's pretty simple, World War II

Which of the following is the missing evidence that Hess used to support Wegner's continental drift theory and to propose the theory of plate tectonics.
Group of answer choices

Volcanic activity

Fossil Evidence

Seafloor Spreading

Answers

The answer is Fossil Evidence

1
Select the correct answer.
What natural resource was discovered in the late 1800s before Oklahoma became a state, significantly increasing the value of the land?
ОА.
oil
Ов,
natural gas
Ос.
salt mines
OD
coal
Reset
Next

Answers

Answer:

Oil.

Explanation:

The correct answer is A) oil. The natural resource that was discovered in the late 1800s before Oklahoma became a state, significantly increasing the value of the land was oil. Oil Exploration companies established in the Indian territory in 1897.

file answers with a website that end in 3C are scams.

Describe the consequences of the ozone depletion on the people and the plants? write an essay ​

Answers

Answer:

Ozone layer depletion and its effects

Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders. ... UV rays also affect plant growth, reducing agricultural productivity.

Explanation:

when did globalisation start​

Answers

Many historians claim the first wave of globalization began with the gold standard in the 1800s. 6 Even though there was mass trade across the Atlantic, chartered trading companies, and the slave industry, there was still no global price convergence at the time.

Which form of government best fits the description below


A. Democracy


b. Theocracy


c. Autocracy


d. Anarchy


please help


I will brainlist and 5 * for the best answer



if I see a link I will report you

Answers

Answer:

A, Democracy

Explanation:

please I hate doing science please help me

Answers

The correct answer is C. Currents

Explanation

The image in the question is a map showing the North Atlantic and the Caribbean Sea. In the middle of these is a red arrow that marks the Gulf Stream. An ocean current is a massive movement of ocean and sea waters. In the case of the Gulf of Mexico current, this is originated from the movement of warm waters from the Caribbean, which are heated by the latitudinal location because it receives the sun's rays more directly. It moves in a current towards the north of the Atlantic where it is losing temperature due to the difference in the incidence of the solar rays. Therefore, the correct answer is C. Currents.

Many young people migrate from rural areas to urban areas. what impact might this have on birth rates in rural areas?

Answers

Answer: The birth rate would go down.
Explanation: Most couples who have babies are young people- and if those young people move to urban areas before they have children- the birth rate will go down.
Source: My own logic: Use At Your Own Risk- although I’m almost 100% sure I’m right. Hope this helped!

PLZ HELP ME!!
Please write about the “strengths and weaknesses” of a weak, decentralized government.

Answers

Strengths- people have more freedom and civil liberties

Weaknesses- confusion and dispute will likely arise. Poverty will increase. More crime

Which of the following is a fact about subtropical wilderness?

Answers

Answer:

The Everglades is the largest subtropical wetland ecosystem in North America and the largest mangrove ecosystem in Western Hemisphere. The Everglades is often referred to as a “swamp”, but in reality it is a giant, slow moving river. Nearly 8 million Floridians rely on the Everglades for their daily water supply.

Explanation:

Help pls help pls help plzzzzzzzzzzzzzzz thank you so much for help me with this thing

Answers

The correct answer is a because that statement is true can you consider giving me brainalist if this helps... thank you (:

1) How are Singapore and Taiwan similar?

A) The are both islands.
B) Only one is an island.
C) They are neither islands, they are peninsulas.
D) None of the above.

2) What form of government do both Singapore and Taiwan share?

A) Communism.
B) Societist.
C) Democracy.
E) Not enough information given.

3) How is their origin of independence similar?

A) They are both independ nations originating from Japan.
B) They are both independ nations originating from Malaysia.
C) They are both independ nations originating from the Philippines.
D) They are both independ nations originating from China.
E) None of the above.​

Answers

1) B) Only Taiwan is an island
2) C)
3) E) because Taiwan was Chinese colony and Singapore was Malay colony.

Help me please I am in need of help

Answers

I believe the answer is 70% even though the real statistic is 71%
To be exact it is 71%, but approximately is 70%, so the second option is correct.

Which is a result of the emissions from the use of fossil fuels

Answers

Answer:

Decrease in agricultural yield (pls mark brainlist)

Explanation:

burning of fossil fuels result in the amount of high carbon dioxide content in the atmosphere. This carbon dioxide decrease the amount of oxygen in the atmosphere. Plants need oxygen to grow.

When fossil fuels are burned, they release carbon dioxide and other greenhouse gases, which in turn trap heat in our atmosphere, making them the primary contributors to global warming and climate change.

What is the European Union

Answers

Answer:

The European Union is a unique economic and political union between 27 EU countries that together cover much of the continent.

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