How many half-lives have passed when there are three times as much daughter isotope as parent isotope?

Answers

Answer 1

Answer:

3 half live have passed.

Explanation:

After 1 half-life , 500 g of the parent isotope will remain. After 2 half-lives , 250 g of the parent isotope will remain. After 3 half-lives , 125 g of the parent isotope will remain.


Related Questions

#15. What is the Equator?
O imaginary latitude line that runs left and right (east and west)
imaginary longitude line that runs up and down (north and south)
Oline dividing the world into 4 hemispheres

Answers

Answer:

A: imaginary latitude line that runs left and right (east and west)

Explanation:

The equator splits the world into 2 halves; an upper half and a lower half.

explain how public policies are impacted by population demographics

Answers

Answer:

Demographic changes can affect GDP growth through several channels. First, lower growth in population directly implies reduced labor input. Second, lower population growth has an indirect potentially negative impact on individual labor supply insofar as it leads to higher tax rates which reduce the incentive to work.

Demographics can include any statistical factors that influence population growth or decline, but several parameters are particularly important: population size, density, age structure, fecundity, mortality, and sex ratio

In 1900, 40% of the US labor force worked in agriculture. A hundred years later, in 2000, only 2% worked in agriculture. What is an important reason for this change?
A.
There was not enough good farmland left.
B.
Congress passed a law restricting the number of farmers there can be.
C.
Improved technology meant that the country needed fewer farmers to meet its needs.
D.
Large numbers of farmers left the US for countries where they were needed.

Please select the best answer from the choices provided
A
B
C
D
HELP!!!!!! UNIT TEST!!!!!!

Answers

The answer is C........

y'all pray for Nigeria
plzzzzzzzzzzzzzz!!!!!!!!!!!!!!!

Answers

Answer:

why?what's happening?

3. Which of these would be an ethnic
group?
O Muslim
Italian
O Buddhist
Christian

Answers

Answer:

Italian

Explanation:

The rest are religions.

Hope this helps!

Answer:

Italian

Explanation: Ethnicity has very little to do with religion

Which of the following would be a true statement about people living in rural or urban communities?

People in urban communities have less access to malls, restaurants and live entertainment

People living in urban communities are usually less religious or aetheist

People in rural communities tend to live a more traditional life style

People living in rural communities are always more religious

Answers

Answer:

People in rural communities tend to live a more traditional life style

Explanation:

One statement that would be true is that people living in rural communities tend to live a more traditional life style.

Since most rural communities are usually have low population and often located away from urban life.

Since they are a bit far away from contact with civilization, we see sometimes they preserve the traditional life. Most custodians of culture and heritage of a people are found in the rural communities. Rural communities have lesser social amenities. Most people live a simple and slow paced life.

Rhode island
Massechyutes bay
Maryland
Pennsylvania
What was the main motivation for the settlement of the colonies listed above?

Economic opportunity

Political independence

Cultural advancement

Religious freedom

Answers

Religious freedom

They were both havens of religious freedom; Massachusetts primarily had the Puritans, and Pennsylvania primarily had the Quakers.
I believe it’s religious freedom.

What do the Sumerians stand out as?​

Answers

Answer:

the black headed people, their land

Factors that affect climate include:
A.Distance from the equator.

B.Height above sea level.

C.The amount of water around.

D.All of the above.

Answers

D. All of the above. I might be wrong but that seems like what would make sense

Deforestation in the Amazon peaked in _____. Since then, deforestation has been __________. A. 1975 . . . decreasing B. 1984 . . . increasing C. 2004 . . . decreasing D. 2010 . . . increasing

Answers

Answer:

c

Explanation:pls mark brainlist

Answer:

c

Explanation:

WILL MARK BRAINLIEST+50 POINTS
What is released into the air when fossil fuels are burned?

Answers

Answer:

nitrogen oxides

Explanation:

Answer:

nitrogen oxides

Explanation:

this was on my notes

(Dont have to mark Brainliest)

The distinctive patterns of tree rings, ice cores, and going back thousands of years can be used to determine the time they were formed.​

Answers

If this is a true or false question. The answer is True.


Climates that are cold year round are

Tropical.

Temperate.

Polar.

Desert

Answers

Polar.

The polar regions are cold year round because of the chill, polar air has a low capacity to evaporate water vapor in the air. The sun angle is fairly low throughout the year in polar areas. A significant amount of solar radiation that does reach the polar surface is reflected back into space.

Hope this helpsss!!

Write any three ways to increase the efficiency of a machine​

Answers

Answer:

Add capacity, add capability, update the technology

Explanation:

I hope this helped!! Have a great day :)

Answer:

Adding skillfully man power. Take care of machine in time to time.

After Middle Eastern lands were partitioned between European countries, the United Kingdom held all of the following regions except __________.
A.
Iraq
B.
Jordan
C.
Palestine
D.
Lebanon

Answers

Answer: After Middle Eastern lands were partitioned between European countries

 

The United Kingdom held all of the following regions except---

LEBANON!!!

hope it helped took test got it right :D

Answer:

it is D:Lebanon

Explanation:

I took the test

Hopes this helps :)

* What factors - such as latitude, elevation, and mountain barriers - affect the
climate of asia?

Answers

Answer:

Asia is the largest continent present in the globe. Factors which affect Asia climate are the latitude and mountain barrier. Latitude acts as a climatic control because the vertical rays of the sun, which are the most intense and heat producing, strike only on the tropics. North and south of the tropical zone are less intense insulated as , the energy received from the sun is less received per unit of the earth surface.  This causes temperatures in the tropics to be cooler and more seasonal as it approaches the poles from the tropic region. Mountain barriers also affect climate by forcing the moisture bearing winds to rise and release precipitation on the windward side of the mountains. The leeward side of mountain barriers usually has an arid climate.  As the descending air on the leeward side is being compressed and therefore, it is warmer.  This condition of the air to be warmer cause the air to be more receptive to absorbing moisture rather than releasing it . As precipitation , the likelihood of precipitation is increased when air is cooled, not when it is warmed. Hence Asia is a continent of various climates and culture.

*Who among the famous Filipino or Foreign Scientists you would like to emulate and why? (Write your
answer in 50-75 words only)

Science ​

Answers

Answer with Explanation:

Among all the scientists in the world, it is Thomas Edison whom I'd like to emulate. His invention of the light bulb is phenomenal because I consider it as one of the greatest invention in the history of mankind. Although he had a hearing problem, he managed to focus on his invention. As a businessman, he was always hardworking, even at a young age, which is truly admirable.

Thomas Edison is the scientist most people aspire to be like among all others. The light bulb he created is incredible because, in my opinion, it is one of the greatest inventions in human history.

What is the most things Thomas Edison famous for?

One of history's most famous and productive inventors, Thomas Alva Edison, made a tremendous impact on modern life by developing the phonograph, motion picture camera, incandescent light bulb, and telephone in addition to improving the telegraph and telephony.

He struggled with his hearing, yet he was able to concentrate on his innovation. He was always a businessman who put in a lot of effort, even when he was young, which is absolutely admirable.

Thus, Thomas Edison is the scientist most people aspire to be like among all others.

For more details about Thomas Edison, click here:

https://brainly.com/question/5529521

#SPJ2

One way to describe weather is
A. Cloudy
B.rainy
C. -2c degrees
D. All of the above

Answers

I believe it would be D

The rock cycle includes all of the steps EXCEPT which of the following

Answers

Answer:

What are the following answers

Explanation:

What is the purpose of the song si nanay si tatay di ko babayaan?​

edit: hayop kayo

Answers

Answer:

The purpose of the song 'Si nanay si tatay di ko babayaan' is to arouse and retain the feelings a child possess for his parents. The poem helps to build a bond between the parents and the child.

Explanation:

'Si tatay di ko babayaan' is a folksong Bikol region of Filipino.

The song is a celebration of the love of the parents. The love and sacrifices of a mother and father for their child have been expressed in the song. The writer here expresses his feelings for his parents. He says that he can never forget nor can he ever repay the sacrifices that his parents had done for him. He wants to help and care for his parents after they grow old. He adds that his feelings can never be replaced by any other person in the world. The song highlights the feelings of a child towards his parents.

Which world culture region had the greatest impact on other culture regions of the world? This culture region conquered and colonized much of North America, South America, almost all of Africa, Southeast Asia, and Australia & Oceania.

a
Western Europe.
b
Russia & Eastern Europe.
c
South Asia (the Indian Subcontinent).
d
the Middle East & North Africa.
Please give any short explanation if possible :)

Answers

Answer:

B.

Explanation:

Russia and Eastern Europe, back then those were the countries that impacted other countries.

Read this passage about the peace treaty that ended the Third Crusade.

Saladin agreed to confirm an ironclad peace agreement between Christians and Saracens [Muslims]. It guaranteed free passage and access to the Holy Sepulcher of the Lord, without the requirement of any tribute or fee. It also granted the freedom of bringing objects for sale through any land whatever and of exercising a free commerce.

Which was a condition of the peace treaty?

A. increased land sales to Christians
B. increased tributes paid to Saladin and the Muslims
C. Christian occupation of Jerusalem
D. freedom of trade between Europeans and Muslims
mind someone help me on this question?
·ω·

Answers

Answer: D. freedom of trade between Europeans and Muslims

Explanation: just did it on edge 2020

Answer:

d

Explanation:

Which of the following industries is especially dependent upon the production of copper?
A.
electronics
B.
jewelry
C.
aluminum
D.
ship-building

Answers

Answer:

I believe it would be A

Explanation:

Ships don't need copper. Aluminum is Aluminum, and doesn't need copper. Jewelry rarely has copper in it. And copper is one of the most important parts of the electronic industry because of it's conductivity.

Answer: it is A. Electronics

Explanation: I got it right on edge 2021

please help if you can
which information supports the theory that the continents on earth have moved choose three pieces of information

Answers

Answer:

you're correct the three answers ars c d and e

Which physical feature’s formation is most closely related to the soil building process?

Answers

Answer:

Hello. You did not provide answer options. However, one of the physical characteristics of the Earth's crust most closely related to soil construction is the existence of minerals and assimilable nutrients in the crust.

Explanation:

The earth's crust has many physical characteristics, one of which is to be an environment where plants can establish themselves and assimilate nutrients. This characteristic is directly related to the formation of the soil. This is because during weathering, which is the process where a rock is fragmented to create the soil, the rock has minerals grouped in its composition. As the rock breaks down these minerals it leaves the rock and incorporates the fragments that will form the soil. These are minerals that will be the assimilable nutrients for plants.

What is the cause of plants growing in the Sahara desert after hundreds of years?
increased drought
increased erosion
increased rainfall

Answers

I’m assuming it’s Increased rainfall since plants need water to grow but I could be wrong

why do i weigh less in the morning

Answers

Because you took a fat dump last night and lost 3 pounds
People weigh less when they wake up because the body is slightly dehydrated

In countries that are in stage 2 of the demographic transition, an increase in doubling time would be most likely to occur as a direct result of

A.
increased immigration.

B.
decreased CDR.

C.
increased dependency ratios.

D.
decreased CBR.

E.
increased sanitation.

Answers

Answer:

A)

Explanation:

The correct answer is:

D. decreased CBR

Which of the following elements identifies the location of the map?

Answers

Answer:

Tittle

Explanation:

Tittle because it tell us what the map is about, like the position of Canada.

How does the government influence the way we live ?

Please help!!

Answers

Answer:

The government can controll a lolt of how we live.They control how much money we spend because theyt ake a portion of our paycheck.

Explanation:

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