Carbon-14 becomes Nitrogen-14. Which type of change must have taken place? (chemical, physical, or nuclear) Explain your reasoning.​

Answers

Answer 1

When Carbon-14 becomes Nitrogen-14 the type of change that must have taken place is nuclear.

What is the change?

The change that must have taken place is radioactive decay, specifically beta decay. Carbon-14 undergoes beta decay, in which a neutron in the nucleus of the atom is converted into a proton, while emitting an electron and an antineutrino.

This results in the conversion of a carbon-14 atom to a nitrogen-14 atom, with the atomic number increasing by one (from 6 to 7) while the atomic mass remains the same (at 14). This process is a natural and constant occurrence in the carbon cycle, and is used in radiocarbon dating to determine the age of organic materials.

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Related Questions

(Answer each separately) 1. What is happening to atoms in the process of nuclear fusion? Mass is being converted into what? 2. During this process, how is energy generated? 3. What is the reason that the sun neither expands nor contracts in nuclear fusion? 4. How has the light from the sun changed over time? Why has it changed?​

Answers

Answer: I Hope This Helped :)

1. In the process of nuclear fusion, atoms are being combined to form a heavier nucleus. This process releases a large amount of energy and results in a slight decrease in the total mass of the nucleus. The mass that is lost in the fusion process is converted into energy, according to Einstein's famous equation E=mc^2, where E represents the energy released, m represents the mass that is lost, and c is the speed of light.

2. Energy is generated during nuclear fusion because the process involves the release of a large amount of energy in the form of photons (light particles) and subatomic particles, such as neutrons and alpha particles. This energy is released because the atomic nuclei are combining and forming a more stable, lower-energy nucleus.

3. The sun neither expands nor contracts in nuclear fusion because there is a delicate balance between the inward gravitational force and the outward pressure created by the energy released during fusion. As long as this balance is maintained, the sun will remain stable and not expand or contract significantly.

4. The light from the sun has changed over time because the nuclear fusion reactions that power the sun occur at different depths within the sun's core. As the sun ages and uses up its fuel, the fusion reactions move outward, which causes a change in the wavelengths of light that are emitted. This is why the sun's light has changed from being bluer in the past to being more yellowish-white in the present.

The hypothalamus can activate the sympathetic nervous system
O True
O False

Answers

True because after the Amygdala sends a distress signal, the hypothalamus activated the sympathetic nervous system by sending signals through the autonomic nerves to the adrenal glands. These glands respond by pumping the hormone epinephrine (also known as adrenaline) into the bloodstream.

Directions: Select the correct diagram.
Which diagram best represents the relationship between the Earth and Sun that causes the changes in seasons on Earth?
Earth &
Earth's
Equator
Equator
Earth's plane of orbit
sunlic
Earth's plane of orbit
sunlight
Sun
Sun
Earth's
Axis
Equator
Earth
Earth's
Axis
Earth's plane of orbit
sunlight
Earth's plane of orbit
Sundat
Sun
Sun

Answers

Answer:

It's bottom left image.

Explanation:

Top Left : According to modern science diagrams: the Earth and it's axis doesn't stand up straight, the axis is tilted.

Top Right: The equator is the horizontal line passing between the ocean and parts of Africa, forming the northern and southern hemispheres, not the vertical line.

Bottom Right : The Earth's axis is tilted, but not tilted to the right or at least tilted to almost 180°

The diagram that best represents the relationship between the Earth and Sun that causes the changes in seasons on Earth is:

Sun

|

Earth's plane of orbit

|

Earth

|

Earth's Axis

|

Equator

|

sunlight

What causes change in seasons?

This diagram shows the tilt of the Earth's axis with respect to the plane of its orbit around the Sun, which causes different parts of the Earth to receive varying amounts of sunlight throughout the year.

The equator is shown as a horizontal line, with the sunlight coming in at an angle, to represent how the Sun's rays are spread out over the Earth's surface due to its spherical shape.

The position of the Earth in its orbit around the Sun also affects the amount of sunlight received by different parts of the Earth, as shown by the positioning of the Earth in relation to the Sun.

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Based on the data in the figure, a student claimed that since 2007, the carrying capacity of wolves in Yellowstone National Park has been 100 wolves, and the maximum annual per capita growth rate of gray wolves is 0.6 wolves per wolf per year. Which of the following is closest to the calculated wolf population size in 2017 based on the student’s claim?

Answers

Maximum annual per capita growth rate of gray wolves is 0.6 wolves per wolf per year.126 wolves are closest to the calculated wolf population size in 2017 based on the student’s claim.

What is growth ?

Growth is the process of increasing in size or number, either physically or figuratively. It is a fundamental part of any organism's life cycle and is necessary for the continuation of life. Growth is an essential part of development, as it allows for the adaptation of the organism to the environment and can be seen in both plants and animals. Growth is also essential for an organism's survival, as it allows them to gain the resources they need to survive. Growth can be seen both in terms of physical size, as in the case of a growing plant, or in terms of numbers, as in the case of a growing population.

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Which of the following would provide evidence that the mutated form of the CFTR protein is harmful to human

Answers

The correct option is D, as epidemiological studies showing that individuals with the CFTR mutation have a higher risk of developing respiratory infections and other complications provide support for the idea that the mutated form of the CFTR protein is harmful to humans.

What happened to cause the CFTR gene to become mutated?

F508del is the most prevalent CFTR mutation, seen in around 70% of patients with CF. The deletion of three base pairs in the CFTR gene results in the lack of an amino acid termed phenylalanine, abbreviated F, in the CFTR protein.

Recessive diseases include cystic fibrosis.

A mutated variant of the CFTR protein is dangerous. Individuals who inherit the mutant variant of the gene are more likely to experience major health issues.

Option D is accurate because it implies that epidemiological research supporting the hypothesis that the mutant version of the CFTR protein is detrimental to humans would demonstrate that people with the CFTR mutation have a higher chance of having respiratory infections and other issues. This is consistent with the widely held belief that the CFTR mutation has detrimental effects on health and causes problems with cystic fibrosis.

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The complete question is: Which of the following types of evidence would provide support for the idea that the mutated form of the CFTR protein is harmful to humans?

A. Studies showing that individuals with the CFTR mutation have a lower risk of developing respiratory infections and other complications.

B. In vitro studies showing that the mutated CFTR protein functions normally in the cell membrane, leading to normal ion transport.

C. Animal studies demonstrating that mice or other model organisms with the CFTR mutation have no symptoms or pathologies related to cystic fibrosis.

D. Epidemiological studies showing that individuals with the CFTR mutation have a higher risk of developing respiratory infections and other complications.

How do the
populations in a community depend on
each other?

Answers

There are many distinct ways in which populations in a community are interdependent, and these interdependencies form the cornerstone of the intricate interactions that exist between various species in an ecosystem.

What is population?

A population is a collection of people belonging to the same species who coexist and communicate in a certain geographical region. Depending on the species and the habitat it lives in, a population can have anything from a few to millions of members.

Examples of how different groups in a society are interdependent include:

Food webs and chains: In a community, many creatures rely on other organisms for nourishment. For instance, plants are the main providers of the food that feeds herbivores, which are then consumed by carnivores. A food web is formed by the links between several food chains, which is a network of energy flow.

Pollination: To enable fertilization and the development of seeds, many plants rely on pollinators like bees, butterflies, and birds to move pollen from one plant to another.

Decomposition: species that break down dead organic materials, such as bacteria and fungus, recycle nutrients and make them accessible to other species in the ecosystem.

Competition: Within a community, populations may clash for resources like food, water, and space. This rivalry may restrict population expansion and have an impact on how species are distributed throughout an ecosystem.

Symbiotic interactions: In a community where two or more species coexist and are dependent on one another for existence, there are symbiotic interactions between the many populations that make up that community.

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Can someone help me really fast please? When you give the answer please elaborate don’t just put a few words

Answers

1. We eat to obtain the nutrients and energy our bodies need to function properly.

2. The types of food animals in the ocean eat depend on their species and location.

Why is eating important?

Nutrients like carbohydrates, proteins, and fats provide energy, while vitamins and minerals support various bodily processes.

Some animals, like plankton and krill, feed on tiny plants and animals floating in the water. Others, like sharks and dolphins, hunt and eat larger fish and squid. Some ocean animals, like sea turtles, feed on both plants and animals, while others, like whales, consume primarily krill and other small organisms.

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A week bond between two hydrogen molecules;found between water molecules and nucleotides in DNA

Answers

Answer:The weak bond between two hydrogen atoms, which is commonly found between water molecules and nucleotides in DNA, is called a hydrogen bond.

Explanation:

Answer: Hydrogen Bond

Explanation:

Read the two scenarios below. Identify each situation as phagocytosis or pinocytosis. Provide an explanation for
your answers.
A. A bacterial cell is engulfed by a white blood cell.
B. A protist cell absorbs dissolved food particles in the extracellular fluid.

Answers

A. The situation described is an example of phagocytosis, which is the process by which cells engulf large particles or other cells. In this case, a white blood cell is engulfing a bacterial cell to destroy it. Phagocytosis is an important mechanism of the immune system to protect the body against foreign invaders.

B. The situation described is an example of pinocytosis, which is the process by which cells absorb dissolved substances, such as nutrients, from the extracellular fluid. In this case, a protist cell is absorbing dissolved food particles to obtain nutrients for its metabolism. Pinocytosis is a common process in many types of cells to take up molecules from the environment.

Of the following, which one has been used to estimate annual carbon dioxide levels before measurements were taken at the Mauna Loa Observatory?
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices

human remains

rock samples

peat stacks

ice cores

Answers

the answer is peat rocks

Please answer Quickly!!!

Answers

Answer: decrease, increase

Explanation: Coral can live in acidic water, but is less healthy and dense

Which statements about renewable and nonrenewable resources are true? Check all that apply.

Answers

There are two types of resources: renewable and nonrenewable. While a nonrenewable resource has a finite supply, a renewable resource can replenish itself at the rate of use.

Wind, timber, and other renewable resources are examples, while coal and natural gas are examples of nonrenewable resources.

Renewable resources are abundant while nonrenewable resources are scarce.

A nonrenewable resource is a natural substance that is not replenished at the rate at which it is consumed. While renewable sources are good for the environment, they also pollute.

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Compare the average rate at which geothermal and solar energy reach earths surface? As a policy maker in pursuit of solving world energy problems, which one would you pursue?

Answers

Answer:

The average rate at which geothermal and solar energy reach Earth's surface are significantly different.

Geothermal energy is generated from the heat of the Earth's core, and it is estimated that the total power output of geothermal energy is around 44 TW (terawatts). However, only a small fraction of this power, about 3.3%, is estimated to reach the Earth's surface. This means that the average rate at which geothermal energy reaches the Earth's surface is around 1.45 TW.

On the other hand, solar energy is generated from the radiation of the sun, and the total power output of the sun is estimated to be around 386,000 TW. While some of this energy is absorbed by the Earth's atmosphere and reflected back into space, the remaining energy is estimated to be around 174 PW (petawatts). This means that the average rate at which solar energy reaches the Earth's surface is around 174,000 TW.

As a policy maker in pursuit of solving world energy problems, solar energy would be the more viable option, due to its significantly higher rate of energy reaching the Earth's surface. Additionally, solar energy is a renewable resource that does not produce greenhouse gas emissions, making it an environmentally friendly option. Geothermal energy, while also renewable and clean, may not be as easily accessible in all areas and may require significant investment in infrastructure for harnessing its energy.

Hope this helps!

Which statement best describes how eukaryotic cells are able to replicate such larger amounts of DNA.

Answers

Answer:

D (I think)

Explanation:

A - No, it replicates everything  

B - I think it's referring to okazaki fragments (?) which is on the lagging strand so no.
C - No, in interphase they prepare the for meiosis.

D - the only reasonable statement left

All of the following statements regarding the Kyoto Protocol are true EXCEPT:
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices

the treaty set different but specific targets of carbon dioxide reduction for various nations.

the treaty was replaced by the 2016 Paris Agreement.

the protocol was ratified by the United States.

no emission targets were set for developing countries.

Answers

Answer:

c

Explanation:

C) The protocol was ratified by the United States is not true.The Kyoto Protocol was an international agreement adopted in 1997 with the objective of reducing greenhouse gas emissions in order to combat global climate change.

The following statements about the Kyoto Protocol are true:

A) The treaty set different but specific targets of carbon dioxide reduction for various nations.

B) The treaty was replaced by the 2016 Paris Agreement.

D) No emission targets were set for developing countries.

However, the United States did not ratify the Kyoto Protocol, which was a major setback for the treaty's effectiveness.

Answer: 3rd option is not true

Explanation:

The United States did sign the Kyoto Protocol but it never ratified it, meaning it did not formally agree to be bound by its requirements. Therefore, the United States did not participate in the treaty's implementation.

Can someone help me really fast please? elaborate don’t just put a few words

Answers

Answer:

We eat to gain nutrients for our bodies to function.

Explanation:

Eating is essential to human survival basically if we don't eat we won't be able to do activities and it will cause people to become sluggish. Eating provides the body with nutrients to grow and repair, if you don't eat you won't be able to gain back blood cell counts and it just makes your body work way more slowly than usual. If we didn't eat our bodies would lack the energy to be able to survive and thrive.

Animals in the ocean will eat other animals or plants in the ocean just like land animals. Often times they will eat animals smaller than them or have seaweed and kelp depending on the animal's diets.

Climate mitigation can be pursued using the _____ approach.
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices

precautionary

conservation

adaptation

wedge

Answers

Answer:

the answer is adaptation

True or false cells are the basic unit of life

Answers

True, cells are considered the basic unit of life. All living organisms are composed of one or more cells, each of which carries out the fundamental processes of life, such as metabolism, growth, and reproduction. Cells can vary in size, shape, and function, but they all share certain features, such as a cell membrane, genetic material, and the ability to use energy. Therefore, cells are the fundamental building blocks of life and are considered the basic unit of life.

please help me fill out the table!

Answers

The equation for the light-dependent reactions of photosynthesis is:

2 H2O + 2 NADP+ + 3 ADP + 3 Pi + light → O2 + 2 NADPH + 3 ATP

The equation for the light-independent reactions of photosynthesis is:

3 CO2 + 9 ATP + 6 NADPH + 6 H+ → C3H6O3-phosphate + 9 ADP + 8 Pi + 6 NADP+

What are the light-dependent and the light-independent reactions of photosynthesis?

The light-dependent reactions of photosynthesis occur in the thylakoid membranes of the chloroplasts and involve the absorption of light by pigments such as chlorophyll.

This light energy is used to split water molecules into oxygen gas (O2) and protons (H+), generating ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) in the process.

The equation for this process is:

2 H2O + 2 NADP+ + 3 ADP + 3 Pi + light → O2 + 2 NADPH + 3 ATP

The light-independent reactions of photosynthesis also known as the Calvin cycle, occur in the stroma of the chloroplasts and use the ATP and NADPH generated in the light-dependent reactions to fix carbon dioxide (CO2) into glucose.

The equation for this process is:

3 CO2 + 9 ATP + 6 NADPH + 6 H+ → C3H6O3-phosphate + 9 ADP + 8 Pi + 6 NADP+

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what is the difference between a 1950 food pyramid and a 2000 food pyramid

Answers

The 1950 "Basic Four" food groups pyramid was the first food guide developed by the United States Department of Agriculture (USDA) to help Americans make healthy food choices. It consisted of four food groups: milk, meat, fruits and vegetables, and breads and cereals. It recommended eating a certain number of servings from each group every day, with an emphasis on consuming more grains and dairy products than fruits and vegetables.

The 2000 food pyramid, known as the "MyPyramid" food guide, was a more complex and personalized approach to healthy eating. It was designed to reflect the latest research on nutrition and health, and included six food groups: grains, vegetables, fruits, oils, dairy, and meats and beans. The pyramid was divided into vertical sections, with each section representing a different food group and the width of the sections indicating the proportion of each food group that should be consumed daily.

In addition, the 2000 food pyramid provided guidelines for daily physical activity and emphasized the importance of balancing food intake with exercise to maintain a healthy weight. It also included advice on portion control, moderation, and making healthy food choices within each food group.

Overall, the 2000 food pyramid represented a more comprehensive and individualized approach to healthy eating than the 1950 Basic Four food groups pyramid.

please help me. Pleae​

Answers

Thus, the organs functioning of the nervous system regulates a variety of functions, including the capacity to move, breathe, observe, The nerve cell, or neuron, is the building block of the neurological system.

What role does the nervous system play?

The spinal cord, brain, plus an intricate web of neurons make up the nervous system. All information from every component of the body must be sent, received, and interpreted by this system. The nervous system controls and organises the operation of the internal organs and reacts to alterations in the environment outside the body.

What are the nervous system's two primary purposes?

Sensation and motor responses are both produced by the nervous system in response to information it receives about our environment. The nervous system can be broken down into sections that control movement (motor functions) and sensation (sensory functions).

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Hi there is no science category so I decided to put it in this category hope that’s ok but yeah I need help with this

Answers

1. Divergent boundary occurs at X. 2. convergent boundary occurs at Y. 3.  Sea floor spreading occurs at X. 4. trench occurs at Y. 5. Mid-oceanic ridge landform develops at X. 6. Subduction landform develops at Y. 7. convection in the mantle causes tectonic plate movement.

Plate boundariesAcross a three-dimensional surface or zone known as a plate boundary, there is a noticeable change in the velocity (speed or direction) of one lithospheric plate in relation to the next lithospheric plate.The three types of plate boundaries—convergent, divergent, and conservative—can be found at the edge of the lithospheric plates. Because two plates contact, wide zones of deformation are typically a hallmark of plate borders. Each of the three boundaries has a unique motion that distinguishes it.As the plates pull apart, new crust is produced at divergent boundaries. Where one plate slides under another, creating convergent boundaries. When plates glide past one other horizontally, there are places called transform boundaries where crust is neither created nor destroyed.

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I need help ASAP
For this assignment, you will be writing an abstract of a scientific paper. Can someone please summarize this section the picture that I posted in under 250 words



An abstract is a short, concise summary of a scientific study or literature review.

Be sure you summarize each section of the research paper in your abstract.

Keep your abstract under 250 words

Be concise!

Answers

An abstract, which is a concise description of an essay, thesis, review, symposium continuing, or any with-depth investigation of a specific topic, is frequently used to assist readers in instantly guiding the goal of a publication.

What does an academic review of the summary entail?

An introduction of a literature review and a meta-analysis must include the following types of data: (1) the topic and connections under consideration (2) prerequisites for studies (3) participant categories (4) key findings, including the biggest impact sizes and any significant modifiers of these sizes of effects (5) Findings, such as

What is a scientific study's abstract?

It must provide the message that is wanted since it is a brief synopsis of the essay. It provides a brief summary of the entire article, conveys its main points, and reveals whether it lives up to the reader's expectations. Educational assignments and research reports often include abstracts as important components.

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a child recieves an x chromesome from its mother and a y chromosome from its father. what is true about this child?

Answers

Answer: The Child Is A Normal child..

Explanation: A chromosome is a Part of DNA So the child will have some DNA from His mother and some from his dad

Describe the activation of Cytotoxic T cells and the effects of these cells on our immune system.

Answers

Answer:

Explanation:

Cytotoxic T cells (also known as CD8+ T cells) are a type of white blood cell that play a crucial role in the immune response to viral infections, cancer, and other diseases. These cells are activated when they encounter a specific antigen presented on the surface of an infected or cancerous cell.

The activation of cytotoxic T cells involves several steps. First, an antigen-presenting cell (APC), such as a dendritic cell, engulfs and processes an antigen from a pathogen or cancer cell. The APC then presents the antigen on its surface in combination with major histocompatibility complex (MHC) class I molecules. When a cytotoxic T cell recognizes the specific antigen-MHC complex, it becomes activated and undergoes clonal expansion to produce many copies of itself.

Once activated, cytotoxic T cells can directly kill infected or cancerous cells by releasing toxic molecules such as perforin and granzyme, which create holes in the target cell's membrane and trigger apoptosis (cell death). Additionally, cytotoxic T cells can release cytokines, such as interferon gamma, that help to recruit and activate other immune cells, including macrophages and natural killer cells.

The effects of cytotoxic T cells on the immune system are primarily beneficial, as they help to eliminate cells that are infected with a virus or have become cancerous. This can help to prevent the spread of infection and the development of tumors. However, in some cases, cytotoxic T cells may also attack healthy cells, leading to autoimmune disorders or tissue damage. To prevent this, the immune system employs various mechanisms to regulate the activity of cytotoxic T cells and maintain self-tolerance.

desecribe how carbon dioxide levels can be reduced in the atmosphere

Answers

Answer:

What are 5 ways to reduce carbon dioxide?

Avoid Mass Market, Throw Away Fashion.

Reduce your Meat and Diary Consumption.

Refuse Single-Use Plastic.

Reduce and Rethink your Transportation.

Switch to Green Energy.

Fighting Climate Change through Rewilding.

Please help me with these two questions I don’t know what they are. (Btw only picked biology bcuz there’s no science option)

Answers

In the air, ocean, or mantle, convection currents were heat-driven cycles. They are brought on by a variation in temperature, frequently as a result of a difference in proximity of a heat source.

What are the several types of convection?

Natural convection or forced convection are the two types of convection. Natural convection is caused by density variations in a fluid as a result of temperature variations (for example, "hot air rises"). Convective heat transfer is responsible for local weather phenomena like wind as well as global atmospheric circulation.

Conduction and convection current: what are they?

A cloud that is carrying free electrons and is moving through the atmosphere due to wind is an illustration of a convection current. Charged particles that are part of a conduction current move in reaction to the electromagnetic radiation rather than just being carried by the movement of the materials around them.

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John applies a small amount of liquid between his dog's shoulder blades each month. The liquid
helps prevent insects from bothering his dog, Lately, the liquid does not keep fleas off his dog.
What is the likely cause of this change?
A The fleas that survived exposure to the liquid once have produced offspring that are resistant to
the liquid
B. The weather conditions have changed. There are more fleas living in John's yard
C. The liquid has changed the dog's fur over time. Now the liquid is absorbed into the fur rather
than staying on the skin.
D. John gives his dog a bath after applying the liquid and the liquid is not able to work correctly.

Answers

Answer:

A. the fleas that survived exposure to the liquid once have produced offspring that are resistant to the liquid

In order to estimate the population size of the woodlice in her garden, Jessica used the mark-recapture method: she trapped, marked and released 20 woodlice. Three days later, she trapped 15 woodlice and observed that 10 had marks. Use the following formula to estimate the woodlice population size: population size = 1st sample × 2nd sample ÷ 2nd sample that had been marked.

NEED HELP ASAP
100 PTS!!!!!!!

Answers

Okay, let's break this down step-by-step:

1) Jessica originally trapped, marked and released 20 woodlice. So the 1st sample = 20.

2) 3 days later, she trapped 15 woodlice total. So the 2nd sample = 15.

3) Of the 15 woodlice trapped on the 2nd day, 10 of them had marks. So the 2nd sample that had been marked = 10.

4) Plugging this into the formula:

Population size = 1st sample × 2nd sample ÷ 2nd sample that had been marked

= 20 × 15 ÷ 10

= 300

Therefore, the estimated population size of the woodlice in the garden is 300.

Did I interpret the problem and formula correctly? Let me know if you need more details.

Okay, let's break this down step-by-step:
1) Jessica originally trapped, marked and released 20 woodlice. So the 1st sample =
20.
2) 3 days later, she trapped 15 woodlice
total. So the 2nd sample = 15.
3) Of the 15 woodlice trapped on the 2nd day, 10 of them had marks. So the 2nd
sample that had been marked = 10.
4) Plugging this into the formula:
Population size = 1st sample × 2nd sample ÷
2nd sample that had been marked
= 20 × 15 ÷ 10
= 300 sample that had been marked = 10.
4) Plugging this into the formula:
Population size = 1st sample × 2nd sample ÷
2nd sample that had been marked
= 20 × 15 ÷ 10
= 300
Therefore, the estimated population size of the woodlice in the garden is 300.
Did I interpret the problem and formula correctly? Let me know if you need more details.

When something is ___________, it’s determined by genetic factors and able to be passed from parents to their offspring. 21 points pls help me with the question.

Answers

when something is inherited

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Round your answers to the nearest cent.Value of Australian dollar at Option Expiration$0.55$0.62$0.64$0.70Own a Call$$$$Own a Put$$$$Net$$$ clare follows the same workout cycle each time she goes to the gym. first, she runs for 13 of an hour. then, she lifts weights for 16 of an hour. if clare has 112 hours to spend at the gym, how many times can she go through her workout cycle?write your answer as a whole number, fraction, or mixed number. simplify any fractions. PLEASE HELP AND EXPLAIN AND SHOW WORK ON HOW YOU GOT THE ANSWER I WILL MARK YOU BRAINLIEST Explain in terms of the no. of nucleons and the forces between them, why argon 36 is stable and argon 39 is radioactive. Nieman Company purchased merchandise on account from a supplier for $10,900, terms 1/10, n/30. Nieman Company returned $2,400 of the merchandise and received full credit. a. If Nieman Company pays the invoice within the discount period, what is the amount of cash required for the payment? If required, round the answer to the nearest dollar.$ b. What account is credited by Nieman Company to record the return? in order to prevent spread of microorganisms from the microbiology laboratory, the room air should be XYZ stock price and dividend history are as follows: Year Beginning-of-Year Price dividend paid at years end2007 $330 $52008 $340 $52009 $320 $52010 $325 $5An investor buys 3 shares of XYZ at the beginning of 2007, buys another 2 shares at the beginning of 2008, sells 1 share at the beginning of 2009, and sells all 4 remaining shares at the beginning of 2010. Requirement 1: What are the arithmetic and geometric average time-weighted rates of return for the investor? (Round your answers to 2 decimal places. Omit the "%" sign in your response.) Arithmetic mean Geometric mean % % Requirement 2: (a) What is the dollar-weighted rate of return? (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places. Omit the "%" sign in your response.) Rate of return % your sister is skeptical that generic drugs are as effective as brand name drugs because generics cost so much less. she asks for your opinion. what should you tell her?a. Generic and brand name drugs are required to be identical in active and inactive ingredients.b. The active ingredients for both are identical, but fillers and other active ingredients may differ.c. Generics are manufactured outside the U.S., and therefore, the ingredients are unregulated.d. The active ingredients in generics are similar to those in brand name drugs, but are not guaranteed to be identical. on its website, tylenol identifies the top headache triggers and offers solutions to headache sufferers. tylenol is focusing on satisfying which level in the hierarchy of needs? (Common stock valuation) Herrera Motor Inc. paid a $3.75 dividend last year. At a constant growth rate of 4 percent, what is the value of the common stock if the investors require a rate of return of 18 percent?The value of the Herrera Motor common stock is $? (Round to the nearest cent.) A recent conference had 750 people in attendance. In one exhibit room of 70 people, there were 18 teachers and 52 principals. What prediction can you make about the number of principals in attendance at the conference? There were about 193 principals in attendance. There were about 260 principals in attendance. There were about 557 principals in attendance. There were about 680 principals in attendance. 1. You have 750 g of water at 10C in a large insulated beaker. How much boiling water at 100C must you add to this beaker so that the final temperature of the mixture will be 75C? For water, c = 4.19 103 J/(kg K). 1950 g 2001 g 1800 g 2243 g