half life of plutonium-239 is 24,300 years. if a nuclear bomb released 8kg of this isotope, how many years would pass before the amt is reduced to 1kg

Answers

Answer 1

Answer:

8:2=4kg in 24.300 years

4:2=2 kg in other 24.300 years

2:2=1kg in other 24.300 years

Total time= 72900 years


Related Questions

Describe the conditions under which new species may arise.

Answers

Answer:

Explanation:i dont knowim so sorry

Answer:

New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed.

Explanation:

What are some ways that oceans influence climate change?

Answers

Answer:

Answer is below.

Explanation:

The oceans influence climate by absorbing solar radiation and releasing heat needed to drive the atmospheric circulation, by releasing aerosols that influence cloud cover, by emitting most of the water that falls on land as rain, by absorbing carbon dioxide from the atmosphere and storing it for years to millions of years.

Hope this helps:)

ANSWER: the oceans influence climate by absorbing solar radiation and releasing it is needed to drive the atmospheric circulation by releasing a resource that influence cloud cover by a meeting the most of the water that falls on land as a by absorbing carbon dioxide from the atmosphere and storing it for years to millions of years ii.

Explanation: hope it helps

How many different amino acids are used in human proteins?

Answers

Answer:

20 amino acids

Explanation:

500 amino acids have been identified in nature, but just 20 amino acids make up the proteins found in the human body.

20 amino acids make up the proteins found in the human body.

HELP PLS BRAINLIEST
Tubelike cells that carry food from the leaves to other parts of the plant are called?

Question 1 options:

Xylem


Phloem


Chloroplasts

Answers

Answer:

Phloem carry food from the leaves to other parts of the plant

Explanation:

Xylem carry water

Chloroplasts are organelles in cells wich allow the plant to photosynthesise

Phloem carry food from leaves to other parts of the plant, xylem carries water from roots to other parts of the plant.

Help melee please...

Answers

Answer:

25%

Explanation:

The image is the punnet square. :)

Name some bubonic plague

Answers

Bubonic plague is one of three types of plague caused by the plague bacterium (Yersinia pestis). One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and vomiting. Swollen and painful lymph nodes occur in the area closest to where the bacteria entered the skin. Occasionally, the swollen lymph nodes, known as "buboes".

Answer:Today, it's best known as the Black Death or the bubonic plague. Medieval people called it "the blue sickness," La pest ("the Pestilence"), and "the Great Mortality." The name bubonic comes from the medieval Latin word bubo via Italian bilbo--meaning a pustule, growth, or swelling.

Explanation:

Which of the following is a biotic in an ecosystem?

A. Wind

B. Tree leaves

C. Small rocks

D. Light from the sun

Answers

Answer:

tree leavessssssssssssssssssss

Answer:

B. tree leaves

Explanation:

A biotic is something in an ecosystem that are components of a community such as plants and animals. Leaves can be consumed by animals which makes them biotic. Temperature and climate are NOT biotic.

Have a good day.


A weather map is shown for the southern United States. According to the map, tornadoes are most closely associated with which
weather event?
A)
blizzards
B)
cyclones
hurricanes
D)
thunderstorms

Answers

D thunderstorms!!! Tornadoes are formed by thunderstorms

A weather map has been shown for the southern United States. According to the map, tornadoes are most closely associated with thunderstorms weather event. Thus, option D is correct.

What is the use of map in weather or garden?

Map is the distribution of flower in a garden. A diagram has been used to label an object so the parts can be recognised easily. A 3-D model has a xerox copy of the object in a three dimensional figure . An information  a word so one can assume infographic . A map helps to represent the layout of the land or distribution of flower in garden.

Geographic information system (GIS) has been analyzed and visualize data for geographic positions on Earth's surface. GIS has computer - based tool that examines spatial relationships, pattern and trends. By connecting geography with data, GIS better understands data using a geographic context.

Therefore, A weather map has been shown for the southern United States. According to the map, tornadoes are most closely associated with thunderstorms weather event. Thus, option D is correct.

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See above diagram, a represents

Options
water

glucose

oxygen

CO2

Answers

Answer:

water

coz the process begins in stroma

Why is the scientific name for a gorilla, Gorilla gorilla?

Answers

Answer:

I'm pretty sure it's Gorilla Gorilla Glueilla Rilla

Explanation:

I THINK

describe the procedure for a civil law trial. what are the possibilities for the outcome of a case?​

Answers

A civil trial starts with the pleadings, where the plaintiff files their complaint with the court. The defendant can then answer the claim. This brings the trial to discovery, where each side gathers evidence for their argument before the judge


I hope this helps you I am Sorry if I am wrong
Have a nice day!

Answer:

A civil trial starts with the pleadings, where the plaintiff files their complaint with the court. The defendant can then answer the claim. This brings the trial to discovery, where each side gathers evidence for their argument before the judge

Explanation:

what is the time of growth between cell divisions called

Answers

Answer:The time growth between cell divisions is called interphase.

Explanation:

Which parts are included in a scientific name? Select all that apply.
1.family 2. species 3. genus 4. phylum

Answers

Answer:

Genus and species name

Explanation:

Scientific names are created to help decrease confusion in the naming process of animals and plants. The first part is the genus which is the origin of the organism and the second part is the species which is what identifies it as plant, animal, and other stuff.

Hope this helps :)

Which of the following is a guideline to follow when using pesticides

Allow pets to stay in area

Put up warning signs

Use one and a half times the recommended dose

Spray on a windy day​

Answers

I would say put up a warning sign.

Explanation.
If you used a pesticide on a windy day it’s gonna blow the product around so it might go into the places you wanted it
Having pets around certain pesticides when they are freshly sprayed can be very harmful to an animal.
And typically the recommended dose is correct so there’s no reason to use more

When a human egg is fertilized by a sperm, the resulting zygote begins the process of cell division that eventually results in an organism with trillions of cells. The image shows a mass of human cells at the eight-cell stage, shortly after fertilization.



What is the best description of these cells?

adult stem cells
adult stem cells

embryonic stem cells
embryonic stem cells

marrow cells
marrow cells

Answers

Answer:

hope this helps not sure tho

Explanation:

Fertilization is the union of a male and a female gamete that gives rise to a zygote that is the first cell of the organism. Fertilization occurs in the sexually reproducing organisms. After fertilization , the zygote undergoes continuous division and Gives rise to a mass of cell that later on differentiate into cells that assume specialized function, each group of specialized cell then gives rise to organ system of the organism.

Which statement best describes the relationship between an allele and a gene?

A.) An allele is a version of a gene that can be expressed as a phenotype.
B.) An allele is the primary protein made by a gene found in a developing embryo.
C.) An allele is the part of a gene that attaches to messenger RNA molecules.
D.) An allele is a segment of a DNA molecule that controls replication of a gene.

Answers

A.) An allele is a version of a gene that can be expressed as a phenotype.

analyze potential impacts of oceans on human populations as the result of climate change in the current century.

Answers

Answer:

The result of climate change is ocean levels increasing because of the increase in temperature. Ice is melting due to climate change and this is causing the ocean levels to rise rapidly. If the ocean levels rise above land, some villages/towns/cities could flood. As a result houses of which people live in and other structures may be destroyed. Water sources may also be contaminated, making the water unsafe for humans to consume.

In dolphins, to have spots on the skin is a recessive trait. One spotted dolphin and one solid gray dolphin have a baby spotted dolphin. Go through the following steps to figure out the genotype of the parent dolphins.

1) what is the genotype of the spotted (recessive) parent?

Answers

Answer:

the spotted parent has the genotype ss

Explanation:

we will use s as the letter when describing the spotted trait.

since spotted is recessive, that parents have to have two little s to have the trait. Since the child also has that, we know that they will have the genotype ss.  the child would have to get a little s from both parents, so the solid parent would have Ss, showing as solid, but still having the gene for spots.

Question 8
To what domain does this organism belong?
Domain Eukarya
Domain Bacteria
Domain Animalia
Domain Archeology
Domain Fungi

Answers

Answer:

Domain Eukarya

Explanation:

It sort of looks like a seahorse. And if it happens to be a seahorse, it would belong to the domian eukarya because animals are made of animal cells, and a eukaryotic cell can be either animal cell or plant cell. So it only makes sense for it to belong to domain eukarya (only if it is animal/plant).

Which gives nourishment to embryo sac??
1) Tapetum
2) Endosperm
3) Thalamus
4)Nucellus​

Answers

Answer:

4 Nucellus

Explanation:

if u think right then follow me

The Nucleus of the embryo gives nourishment. Therefore it is number 4

A copper atom has an atomic number of 29 and an atomic mass of 64. What
is the structure of this atom?
A. It has a central nucleus composed of 29 protons and 29 neutrons,
surrounded by an electron cloud containing 35 electrons.
B. It has a central nucleus composed of 29 protons and 64 neutrons,
surrounded by an electron cloud containing 29 electrons.
O C. It has a central nucleus composed of 35 protons and 29 neutrons,
surrounded by an electron cloud containing 29 electrons.
D. It has a central nucleus composed of 29 protons and 35 neutrons,
surrounded by an electron cloud containing 29 electrons.

Answers

Answer:

D just took the test on APX

How are taxonomic keys used?

Answers

Answer:

A taxonomic key is a simple tool used to identify a specific object. A taxonomic key is one of the most useful tools available to scientists trying to identify an unknown organism. Systematists rely on keys to help identify known organisms and determine whether they have discovered a new organism entirely.

Explanation: Hope this helps

If fertilization started in woman , mensuration will occur or not??? explain​

Answers

Answer:

Fertilisation happens if the egg cell meets and joins with a sperm cell in the oviduct. The fertilised egg attaches to the lining of the uterus. The woman becomes pregnant, the lining of the uterus does not break down and menstruation does not happen.

Define the following term:
1. Pinhole camera

2. Screen

Answers

Pinhole camera: a camera with a pinhole aperture and no lens

Screen:a fixed or movable upright partition used to divide a room, give shelter from drafts, heat, or light, or to provide concealment or privacy.

How is G0 represented?

Answers

with respect, G0 meaning what?

CAN SOMEONE HELP I DONT HAVE MUCH LONGER ON THIS TEST :( !!

Answers

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: Prokaryotic

Explanation:

I hope this helped!

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- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer:

the correct answer choice is c.

Explanation:

prokaryotic cells lack both a nucleus and membrane-bound organelles.

How is viral reproduction different from the reproduction of single-celled and multicellular
organisms?

A. The virus depends entirely on a host cell to reproduce.

B. The virus relies on nucleic acids, such as DNA, to reproduce.

C. The virus relies on proteins to reproduce.

D. The virus reproduces very rapidly, but in smaller numbers.

Answers

Answer:

A. The virus depends entirely on a host cell to reproduce

Viral reproduction different from the reproduction of single-celled and multicellular organisms because the virus depends entirely on a host cell to reproduce. Thus, option A is correct.

What are the difference between single- celled and multicellular organism?

The main difference between single- celled and multicellular organism is that single- cellled organisms are made up only single cell on the other hand multicellular organisms are made up of multiple cells.

Cell theory is a scientific theory that's help to learn how living organisms are made up of cells, that's they are the basic structure unit of all organisms, and that all cells from pre-existing cells.

Prokaryotic Cell

Prokaryotic cells are single-celled microorganisms known to be  earliest on earth.

Eukaryotic cell

Eukaryotic cells have a nucleus enclosed within the nuclear membrane and form large and complex organism.

Difference between unicellular and multicellular.

The main difference between unicellular organisms and multicellular organisms is that unicellular organism is unspecialized it means all the body function depends upon only on the single cell and in multicellular organism there is specific cells for specific purposes.

Multicellular and unicellular organisms are perform almost all the life running activities and processes such as respiration, reproduction digestion, breathing, and metabolism.

In unicellular organism division of labour is at the organ level on the other hand in multicellular the division of labour at cellular, tissue, organs and organ system level.

Unicellular organism has simple body organization and multicellular organism have complex body organism.

Therefore,viral reproduction different from the reproduction of single-celled and multicellular organisms because the virus depends entirely on a host cell to reproduce. Thus, option A is correct.

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Which was not developed in the 1800s?


natural selection


germ theory


scientific method


cell theory

Answers

Answer:

germ theory

Explanation:

it was founded in the 19th century and founded by a man named Louis pasteur and robert koch who provided the final clue

Cell Theory is your answer

What is the term for a number or amount of things?
A. Force
B. Quantity
C. Mass
D. Coordinate

Answers

Answer:

B:Quantity

Explanation:

hope this helps

the photo is below, pls help

Answers

Answer:

Billiard Ball Model

Explanation:

I used process of elimination.

The plum pudding model looks more like chocolate chip ice cream scoop.

As you can probably tell, that is not a solar system model.

It also is not a nuclear model because those look more like the attached file.

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