A substance has a half-life of two days. If 10 days have passed, how many half-lives have the substance gone through?
show your work!!

Answers

Answer 1
It’s five isn’t it because Yk 10/2
Answer 2

Half life of the substance will be 5 days  i.e.  10/2=5

The term is most often used in the context of radioactive decay, which occurs when unstable atomic particles lose energy.

What is half life?

It is the time required for a quantity to reduce to half of its initial value.

What is radio active decay?

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation

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Related Questions

Plant roots have extensions called root hairs. These root hairs are important in the homeostasis of the plan

Answers

Answer: root hairs increase the surface area of the roots for nutrient and water absorption

Explanation:

How is Anaphase I in meiosis different than in mitosis
A. Chromosomes are not pulled to the poles.

B. Nothing, they are the same

C. Whole chromosomes are moved to the poles

D. The chromosomes are split at the centromeres

Answers

Answer: C

Explanation: In anaphase 1 in meiosis, homologous pairs are separated but sister chromatids stay joined together. In anaphase 1 of mitosis the sister chromatids do separate.

Answer:

C is your answer

Explanation:

In a collosion between two billard balls, the total amount of energy before the collsion is equal to the total energy after the collsion.

true or false?

Answers

The answer is False

hii! i’ll give brainliest pls help

Answers

Answer:

landslide

Explanation:

Answer:

I think it's landslide

hope this helps

have a good day :)

Explanation:

5
Select the correct answer.
A nurse aide is caring for a client who has a viral infection. The client is the host for the pathogen (virus). What should the nurse alde do to break
this link in the chain of infection?
O A Quarantine the client with others who are hosts for the pathogen.
ОВ.
Glve the client the prescribed medication to eliminate the virus.
OC. Encourage the client to wear gloves before touching any surface.
OD Instruct the client to perform hand hygiene before and after meals.
Reset
Next

Answers

Answer:

may be no.c is the answer am I right

Question 2 (1 point)

The "fish with legs" fossil is of great importance to the study of evolution of land-
dwelling animals because:

A) It suggests that fish moved onto dry land and then evolved legs and hands later.

B) It suggests that land-dwelling animals did not evolve from fish.

C) It suggests that fish first evolved legs that allowed them to move out of the
water.

D) It is the missing link between whale evolution and the evolution of terrestrial
mammals.

E) All of the above.

Answers

The best answer to go with is b

PLEASE HELP I NEED THIS TO PASS
Some organisms have a large geographic range. For example, the Norway rat lives on every continent except Antarctica A population of Norway rats is the number of rats in one particular area. Do you think it's scientifically possible for a population of Norway rats in North America to carry different genetic mutations than a population of Norway rats in Africa? Do you think it's possible that they carry some of the same mutations? What types of information can scientists learn by studying the genomes of these two populations of rats?​

Answers

It certainly is possible that the North American population has to carry different mutations than a population of Norway rats in Africa. Genetic mutation is a random event, and the alleles resulting from mutation may rise in frequency and be fixed within the population if they provide a benefit to the fitness of the individuals with that allele. One random mutation could occur in the North American population and not be found in the African population because the occurrence of this mutation is random. It is also possible that the two populations carry the same mutations. This would be the case if the mutation occurred either if the mutation occurred in a common ancestor, or if the mutation occurred prior to the 2 populations becoming allopatric. By studying the genomes of each population scientists will be able to determine when certain mutations occurred. Mutations found in one population and not the other occurred more recently, while mutations found in both populations occurred further back in evolutionary time, and may have originated in a common ancestor.

What do I put in the squares?

Answers

Explanation:

I wrote out an explanation but it said "Rude! We don't use such words here. Please change it". I honestly don't know what word i couldn't use but I just could not post it. I tried changing any words that may have caused it but it did not fix the issue. So here are the answers only.

Will give brainlest 100 points

Answers

Answer:

the answer is B gamma particle

Answer:B

..............................

The diagram below shows the cell cycle. Which type of cell division is indicated by the processes happening in C and D?

Answers

Answer:

This process is mitosis

maybe this will help

It might not be exactly what you are looking for but this is what I have done

The type of cell division indicated by the processes happening in C and D would be mitosis.

Mitosis is the division of vegetative cells and results in the production of 2 genetically identical daughter cells.

During mitosis, sister chromatids separate into opposite poles and each group of chromatids forms the genetic materials for daughter cells that will become independent when the parent cell undergoes cytokinesis - the division of the cytoplasm.

C in the image represents the metaphase of mitosis where chromosomes align at the center of the cell and get engaged by spindle fibers. D represents the anaphase where sister chromatids have been pulled apart and begin to migrate to opposite poles through the contraction of spindle fibers.

After completing their migration to the poles, the chromatids decondense, and a nuclear envelope appears around each of them. The cytoplasm then divides into two for new independent daughter cells to be formed.

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What is the reason water has so many special properties?

Answers

Answer:  Water has many unusual properties

Explanation: Water has many unusual properties because of its polar covalent bonds. Oxygen has a larger electronegativity than hydrogen, so the electron pairs are pulled in closer to the oxygen atom, giving it a partial negative charge. Subsequently, both of the hydrogen atoms take on a partial positive charge.

The National Wildlife Refuge supports _______ wildlife refuges.
a.
150
b.
37
c.
550
d.
227


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

answer b is the correct of this question

I AM GIVING OUT BRAINILEST

Answers

Answer:

blue

Explanation:

bobcats eat rabbits

answer:
the rabbit population may decrease

explanation:
the bobcats will eat a lot of those rabbits

Criminal profiling has some differences to

other forensic science methods. As you've

seen, there are differing opinions about the

use of scientific and non-scientific techniques

in forensic science. Considering what you've

learned, identify what is science, what clearly

is not science, and what resembles science

(but doesn't meet the criteria for science). For

each of these, make sure to give real world

examples and explain why it is either a

science, not science, or resembles science.

Answers

Answer:

Knowledge gain through observation and experimentation.

Explanation:

Science is the systematic study of the structure and behaviour of the physical and natural world through observation and experiment. That knowledge which can be gain through observation and experimentations is considered as scientific knowledge and those knowledge which can be attain through other sources not observation and experiments is known as non-scientific knowledge so we can say that observation and experiments provide scientific knowledge.

cuales son las formas de las células

Answers

Respuesta:

Por lo general, las células son redondas, alargadas o esféricas. También hay algunas celdas que son largas y puntiagudas en ambos extremos. Estas células presentan forma de huso. En algunos casos, las celdas son muy largas.

Communication between cells is affected if there is an issue with which
two systems

Answers

Explanation:

As I think option B is the correct one.

need this answer quick please thanks

Answers

Answer:

Option C

Explanation:

This is the correct answer because asexual Reproduction Requires either 1 or 2 parents. Both Produce 100 percent of genes

I hope this helped!

If a plant were to have a problem with the Central Vacuoles in its cells leading to the vacuoles not functioning properly, what would the plant probably having trouble doing?

Answers

Answer:

it will have trouble while doing photosynthesis process,and it can't exchange gases

Which resources are renewable and which are non renewable?

a
A renewable resource is a natural resource that is replaceable through a cycle in nature or sustainable practice. These resources can be used over and over or can be replaced in one lifetime (about 100 years or less).
b
A nonrenewable resource is a natural resource that is in limited supply. These resources cannot be readily replaced in one lifetime and may run out if used faster than they can be replenished.
c
sunlight, rocks, water, glass metals, and rocks.
d
All of the above.

NO LINKS PLEASE AND THANK YOU

Answers

D.. they’re all correct I believe.
A. c would be correct but it states rocks twice which makes me think it is a trick question. B is incorrect because not all non renewable resources are naturally occurring.

Is tick an insect? If yes, why? If no, why?​

Answers

Answer: Kind of

Explanation: Ticks aren't actually insects, they are arachnids – more closely related to spiders.

6CO2 + 6H2O + light C6H12O6 + 6O2 C6H12O6 + 6O2 6CO2 + 6H2O + energy

How do these equations explain why the total amount of O2 and CO2 remains the same?

Answers

Answer:

They cancel each other out. There are 12 Carbon molecules on each of the equation and 54 Oxygen on each side So their carbons cancel each other out on each side of the equations as the oxygen.

hope it helps

describe how lactobacillus is important in human intestine???​

Answers

Answer:

This genus of microbes breaks down dietary fibers and phytonutrients (like polyphenols) which have beneficial effects for your health. What's more, Lactobacillus even helps to feed other bacteria in your gut, such as the ones that produce butyrate (which the cells in your gut lining need for energy).

Explanation:

This genus of microbes breaks down dietary fibers and phytonutrients (like polyphenols) which have beneficial effects for your health. What's more, Lactobacillus even helps to feed other bacteria in your gut, such as the ones that produce butyrate (which the cells in your gut lining need for energy).

websites and the little bit i knew helped

18. Brayden is trying to figure out how petal shape is determined in two different roses. In the pink
rose, the copies of the gene are the same as each other. In the yellow rose, the copies of the gene are
different from each other. How does this affect how many types of proteins there are in each petal
cell?
a
The pink rose has one type of protein for the petal shape feature. The yellow rose has two
types of protein for the petal shape feature.
b
The pink rose has one type of protein for the petal shape feature. The yellow rose has one
type of protein for the petal shape feature.
с
The pink rose has two types of protein for the petal shape feature. The yellow rose has two
types of protein for the petal shape feature.
d
It is impossible to say anything about proteins from the given information.

Answers

Answer:

c

Explanation:

they would have diffrent gene versions and protines to get their colors

In the pink rose, the copies of the gene are the same as each other, while the yellow rose has different copies, so it is concluded that the pink rose has one type of protein for the petal shape feature, while the yellow rose has two types of protein for the petal shape feature, as present in Option a.

What is the petal shape dependent on?

Generally, the characters are dependent on the genes that are present in the DNA; either the gene variants, such as the alleles, show pure dominance or they combine to produce the effect, and here the pink rose petal has the same alleles so they will express the single protein while the yellow has different alleles so it has the chance of the two proteins.

Hence, in the pink rose, the copies of the gene are the same as each other, while the yellow rose has different copies, so it is concluded that the pink rose has one type of protein for the petal shape feature, while the yellow rose has two types of protein for the petal shape feature, as present in Option a.

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Which of the following is the most POROUS? *

A) Ice
B) Plastic
C) Dirt
D) Concrete

Answers

Answer: Concrete

Explanation:

someone help me please, I’ll mark brainlist or whatever it’s called quick

Answers

The answer is

Limit the overuse and misuse of antibiotics in medicine and agriculture.

So, that the bacteria doesn't develop immunity against antibiotics.

Which impact of global warming has the greatest effect on drinking water supplies?
A.melting mountain glaciers
B.rising sea level
C.higher acid levels in the ocean
D.early spring blooming of flowers​

Answers

Global warming is mainly caused by an increase in the temperature of atmosphere. The main impact of global warming has the greatest effect on drinking water supplies is melting mountain glaciers.

Which gas is responsible for global warming?

The gases that leads to greenhouse effect include carbon dioxide, methane, nitrous oxide, and water vapor, and fluorinated gases.

These gases increases the temperature of the atmosphere and results in global warming.

This leads to the melting of mountain glaciers which makes a great reduction in the availability of drinking water.

Thus, the correct option is A.

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Answer:

A

Explanation:

trust

please help me please and thank you!

Answers

Answer:

Nuclear Fission

Explanation:

Answer:

Nuclear Fusion

Explanation:

Okay so I might be wrong on this so don't quote it but since it has nucleus Im thinking nuclear.

The peace treaty which ended French control over Canada in 1763 was signed in:

Answers

Answer:

February 10, 1763.

Explanation:

Question 9 of 25
Which of these statements describes an interaction between a living factor
and a nonliving factor in an ecosystem?
A. A wild turkey displays his feathers to a mate.
B. An earthworm breaks down leaf material.
C. A raven hunts a mouse for food.
D. Mosses in a bog absorb and hold water.
SUBMIT

Answers

Answer:

b

Explanation:

the worm is living while the leaf is not

Answer:

d

Explanation:

a living thing is interacting with a non living thing by using one of its five senses

PLEASE HELP THIS IS DUE IN 30 MINUTES NO LINKS PLEASE
During a normal synaptic transmission, after the neurotransmitters are released from the post synaptic membrane, what happens to the neurotransmitters?
A) They move into the post synaptic neuron.
B They are broken down by enzymes.

C
They return to the pre-synaptic neuron.

D
Both b and c.

Answers

Answer:B

Explanation:

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Fraser, a student at Bethel High School in Pierce County, Washington, delivered a speech nominating a fellow student for student elective office. Approximately 600 high school students, many of whom were 14-year-olds, attended the assembly. Students were required to attend the assembly or to report to the study hall. The assembly was part of a school-sponsored educational program in self-government. Students who elected not to attend the assembly were required to report to study hall. During the entire speech, Fraser referred to his candidate in terms of an elaborate, graphic, and explicit sexual metaphor.Two of Fraser's teachers, with whom he discussed the contents of his speech in advance, informed him that the speech was "inappropriate and that he probably should not deliver it," and that his delivery of the speech might have "severe consequences."During Fraser's delivery of the speech, a school counselor observed the reaction of students to the speech. Some students hooted and yelled; some by gestures graphically simulated the sexual activities pointedly alluded to in respondent's speech. Other students appeared to be bewildered and embarrassed by the speech. One teacher reported that, on the day following the speech, she found it necessary to forgo a portion of the scheduled class lesson in order to discuss the speech with the class.A Bethel High School disciplinary rule prohibiting the use of obscene language in the school provides:Conduct which materially and substantially interferes with the educational process is prohibited, including the use of obscene, profane language or gestures.The morning after the assembly, the Assistant Principal called Fraser into her office and notified him that the school considered his speech to have been a violation of this rule. . . . He was suspended for three days, and . . . removed from the list of candidates for graduation speaker at the school's commencement.Opinion of the Court,Chief Justice Warren BurgerIn the resulting case, Bethel School District v. Fraser (1986), the Supreme Court upheld Frasers punishment, indicating that there had been no constitutional violation. In doing so, the court stated that there was a "marked distinction between a political message and the sexual content of Frasers speech. The court noted that there appeared to be at least some disruption of the educational process, and that there was an interest in protecting children from that which is obscene and vulgar.a) Identify the constitutional clause that is common to both Tinker v. Des Moines Independent Community School District (1969) and Bethel.b) Based on the constitutional clause identified in part A, explain why the facts of Tinker v. 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