Two students are pushing a sofa across a room what is the net force applied to the sofa by the students?

Two Students Are Pushing A Sofa Across A Room What Is The Net Force Applied To The Sofa By The Students?

Answers

Answer 1

Answer:

400N

Explanation:

Hope this helps! Best of luck :)


Related Questions

a website that provides climate data for an area in a biome (for example, the city of Barrow, Alaska). Discuss how conditions in the biome affect the plant and animal life it contains.

Answers

Answer:

Greatly affected.

Explanation:

The conditions in the biome greatly affect the plant and animal life it contains because biome has a specific environmental conditions that allows specific organisms to survive and growth in that particular environment. A biome is a collection of plants and animals that have common characteristics for the environment in which they exist. In the cold regions, only those plants and animals survive and grow which has the adaptation and characteristics to that environment.

What do rock layers have to do with the age of the rock?

Answers

Explanation:

Geologists use the law of superposition to determine the relative ages of sedimentary rock layers.

the rock layer on top is the youngest rock layer according to the law of superposition

When and where would you expect to find the highest rate of primary productivity

Answers

Answer: Net primary productivity is the amount of gross primary productivity remaining after respiration, which is about 40 and 85 percent. Sloughs and marshes, as well as tropical rain forests, possess the highest rates of net primary productivity; deserts have the lowest.

Explanation:

I explained on the top-

The highest rate of primary productivity in terrestrial environments takes place in swamps and marshes and in tropical rainforests, and in aquatic environments it takes place in algal beds, estuaries, and reefs.  

• In ecology, primary productivity refers to the rate at which conversion of energy to organic substances takes place by the photosynthetic producers that attain energy and nutrients from the sunlight, and chemosynthetic producers that attain chemical energy via oxidation.  

• The majority of the energy assimilated by plants via the process of photosynthesis is not stored as organic substance, however, is utilized at the time of cellular respiration.  

• In the process, the organic components like proteins, carbs, and fats are dissociated to provide energy in the form of ATP for the metabolic needs of the cells.  

• The energy not utilized is stored in the tissues of the plants for future use and is known as the net primary productivity.  

• The highest net primary productivity in terrestrial environments takes place in marshes and swamps and in tropical rainforests, and in aquatic environments it takes place algal beds, estuaries, and reefs.  

These environments are mainly critical for the sustenance of global biological productivity.

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Anthropologist: In an experiment, two groups of undergraduates were taught how to create one of the types of stone tools that the Neanderthals made in prehistoric times. One group was taught using both demonstrations and elaborate verbal explanations, whereas the other group learned by silent example alone. The two groups showed a significant difference neither in the speed with which they acquired the toolmaking skills nor in the level of proficiency they reached. This shows that Neanderthals could just as well have created their sophisticated tools even if they had no language
Which one of the following, if true, most weakens the anthropologist's argument?
(A) Apart from the sophistication of their stone tools, there is a great deal of evidence suggesting that Neanderthals possessed some form of language.
(B) The students who were taught with verbal explanations were allowed to discuss the toolmaking techniques among themselves, whereas the students who learned by silent example were not.
(C) The tools that the undergraduates were taught to make were much simpler and easier to make than most types of tools created by Neanderthals.
(D) The instructor who taught the group of students who learned by silent example alone was much less proficient at making the stone tools than was the instructor who taught the other group of students.
(E) The tools created by Neanderthals were much less sophisticated than the tools created by anatomically modem humans who almost certainly possessed language and lived at the same time as the Neanderthals.

Answers

Answer:

A

Explanation:

The point of this arguement is that with or without speaking they were able to make the same sophisticated and complex tools, if it is true that both had a language that would mean the silent people would have no point and that both types of humans had the same initial factors.

Blood type A person marries a blood type B person, both are heterozygous for the trait, what could their offspring be?
AB
B
A
O
all of the above

Answers

Answer:

All of the above

Explanation:

Which of the following will cause a Frameshift mutation?

A. an insertion

B. a substitution

C. a deletion

D. an insertion or a deletion

Answers

D. an insertion or a deletion

this is your answer

hope it is helpful to you

А
В
С
H
G
E
E
Which organelle is labeled A

Answers

i think its animal cell?

Which statement best illustrates a biotic or an abiotic factor that is often found in a city park

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Answer:

"Decaying leaves are an abiotic factor because they are not living. Rocks are an abiotic factor because they have never been alive. Water in ponds is a biotic factor, because it provides a habitat for living things."

Answer:

Rocks are an abiotic factor because they have never been alive

Explanation:

Awnser on EDGE

To test for protein, you added Biuret solution and observed color changes. Suppose that the color data below was observed.

A 3-column table has 1 rows. The first column is labeled Gelatin (+ control) with entry pink/purple. The second column is labeled
Water (negative control) with entry pink/purple. The third column is labeled Mystery food sample with entry blue.

The data above indicate an error. How do you know? What might have caused the error?

Answers

Answer:

When tested for proteins neither gelatin or water was not pink/purple

Explanation:

credit to person who commented on question above

Answer:

The water should not be pink/purple because water should test negative for protein. The water should actually have turned blue, because Biuret solution is blue. Someone may have mislabeled the test tube with water. The water may have been contaminated with a protein.

NO LINKS PLEASE

If Charles Darwin could return to the Galapagos Island today, which of the following is an example of a change he might see?

O A. no changes
O B. more islands
O C. more tortoises
OD. new species of iguanas

Answers

Answer:

D. New species of iguanas

Explanation:

A- doesn't make sense because nature changes every day.

B- More islands is possible but not likely considering your other options.

C- More tortoises is also possible but because I haven't read your text book or where your learned this information I can't be sure this is it.

D- Is the likeliest

d new species of iguanas

SAQ-1:How do you take care of your own clothes

Answers

Buy fabrics that are durable.
Wash less frequently.
Fold clothes along the seams,
Let everything air out. The elastic needs to relax. ...
Learn basic repairs. ...
Avoid Ironing.
Empty your pockets. ...
Close zippers and other fasteners to prevent snagging.
these basic personal hygiene habits:
Bathe regularly. Wash your body and your hair often. ...
Trim your nails. ...
Brush and floss. ...
Wash your hands. ...
Sleep tight.

Alternating current comes from big spinning generators which is constantly reversing as the generator spins this type of current is most commonly found at the wall socket in your house true or false

Answers

Answer:

true

Explanation:

Small changes can add up over MULTIPLE GENERATIONS to make
A. the same species

B. new species

Answers

Answer:

B: new species

Explanation:

These are mutations to the genetic code and over time they can create a new species.

Answer:

B. new species

Explanation:

Small changes can add up over multiple generations to make new species.

Lisa is investigating a chemical reaction involving carbon compounds.which of these results could not occur cording to scientific laws about chemical reactions matter and energy

Answers

Answer: The mass of carbon in the products is greater than the mass of carbon in the reactants.

Explanation:

Animals that are the most similar, are found in completely different regions.

A. True

B. False

Answers

Answer:

B. False

Explanation:

Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. ... Functionally similar features that have arisen through convergent evolution are analogous, whereas homologous structures or traits have a common origin but can have dissimilar functions.

What does DNA prove about organism ancestry?
A. Plants and animals are not related to one another

B. That all organisms are related to one another

C. DNA and RNA are completely different forms of genetic coding

D. Extraterrestrial life will have DNA as well

Answers

Answer:

B. That all organisms are related to one another

Explanation:

DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect the evolution and geological change.

Answer:

B. That all organisms are related to one another

Explanation:

DNA prove about organism ancestry, that all organisms are related to one another.

HELP!!!

The tissues that develop from
of a zygote are the direct result of:
a. Meiosis and fertilization
B. Fertilization and differentiation
C. Asexual reproduction and meiosis
D. Differentiation, later,
Fertilization

Answers

Answer:

D. differentiation, later, fertilization

Complete the statements below. When muscles contract, they become _____. The muscles of the rear end, legs, and feet are called _____ muscles. Muscles move food down the digestive tract.

Answers

Answer:

Short and thicker, anti-gravity, smooth

Explanation:

Which statement best describes how vomiting can help an animal maintain homeostasis?

Answers

I think there are choices/options in that particular question. Please type in the choices in the comment section next to my answer below for me to answer your questionnaire exactly.

This is my idea about your question:

It regulates the body temperature of the animal within a specified range and it expends the body's extra energy.

☆彡 Hanna

what are mammals? what are the examples of mammals?

Answers

Answer:

Mammals are a group of vertebrate animals constituting the class Mammalia  and characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which they diverged in the Carboniferous, over 300 million years ago.

aardvarks.

bats.

elephants.

hamsters.

humans.

rabbits.

rhinoceroses.

whales.

Explanation:

Answer: a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young. ( A animal with hair)

examples: dog, cat, platypus, wombat, kangaroo, tiger, lion, koala, squirrel, horse, giraffe, deer, etc...

Explanation: if the animal has fur/hair its a mammal

DONE
monocot
dicot
Differentiate

Answers

Answer:

Monocots differ from dicots in four distinct structural features: leaves, stems, roots and flowers. ... Whereas monocots have one cotyledon (vein), dicots have two. This small difference at the very start of the plant's life cycle leads each plant to develop vast differences.

hope it helps

Which describes a group of organs that work together to perform a common function? tissue O organism O organ system O cell​

Answers

Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
An organ system is a group of organs that work together to perform various functions.hope this assisted you

What do you know about carbon

Answers

Answer: We have it inside of our bodies

Explanation: Biology

Answer:

Carbon (from Latin: carbo "coal") is a chemical element with the symbol C and atomic number 6.

Explanation:

Hope it's help you !!!

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Answers

Answer:

answer A is the correct answer

High and low tides are caused by the moon. The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon. These bulges of water are high tides.

basically its A.

O daltonismo é um distúrbio moderado ligado ao cromossomo X que se caracteriza pela cegueira para as cores verde e vermelha. Considerando-se o cruzamento de uma muher carreadora do alelo para o daltonismo ao se casar com um homem de visão normal, cuais as chances de as filhas desse casal serem carreadoras é de ?

Answers

Answer:

50%

Explanation:

Olá. Primeiramente é necessário informar que perguntas em português devem ser postadas no campo "world Languagens". Isso porque esse não é o servidor basileiro e sim o servidor americano. Caso contrario, a sua pergunta pode nunca ser respondida e até mesmo excluida do site.

Em segundo lugar, para que seja possivel que você repsonda a essa pergunta você precisará preencher um Quadrado de Punnett, como mostra a figura abaixo.

Como você sabe, as mulheres possuem os cromossomos XX e os homens XY. Como a mulher apresentada na pergunta acima possui o alelo para o daltonismo, mas não apresenta daltonismo, podemos considerar que apenas um dos cromossomos dela possuem esse alelo. O alelo para o daltonismo é recessivo, sendo assim, podemos considerar que essa mulher possui os alelos XDXd. Homem com quem essa mulher se casa, não possui daltonismo, logo os alelos dele são XDY, como mostrado na figura.

Ao preencher o quadrado de Punnett, você verá que existe a possibilidade desse casal possuir duas filhas, uma delas pode possuir os alelos XDXd, igual a mãe e, portanto, ser carreadora do alelo para o daltonismo.

Sendo existe uma chance, em duas filhas desse casal ter uma filha carreadora de daltonismo. Isso é igual a 1/2, que resulta em 0,5, ou 50% de chances de ter uma filha carreadora de daltonismo.

What is hemoglobin?
A. a protein

B. a carbohydrate

C. a lipid

Answers

A. a protein

hope it is helpful to you

Answer:

A. a protein

Explanation:

Haemoglobin is a globular protein of four subunits.

All of these are Cardiovascular disease EXCEPT
Heart Attack
Hypertension
Diabetes
Pulmonary Heart Disease​

Answers

Answer:

Diabetes

Explanation:

Diabetes is a metabolic disease. :)

_____ provide evidence of common ancestry among organisms.


A:Variations in early embryos


B:Similarities in DNA sequences


C:Variations in chromosomes


D:Differences in nucleotide order

Answers

Answer:

B:Similarities in DNA sequences

Explanation:

Molecular similarities provide evidence for the shared ancestry of life. DNA sequence comparisons can show how different species are related. Biogeography, the study of the geographical distribution of organisms, provides information about how and when species may have evolved.

Answer:

B:Similaritions in DNA Sequences

Many prokaryotes reproduce through binary fission .the circular DNA is copied and moves to opposite sides of the cell.the cell divides .What kind of cell division and reproduction is this?

Answers

Answer: Mitosis and Asexual Reproduction

A population of ground mice consist of 500 individuals. You are interested in the gene that codes for for a color and find out there are 580 dominant alleles in this population. What is the allele frequency for the dominant allele? What is the allele frequency for the recessive allele? (show your work)

Answers

Answer:

0,58

Explanation:

Mice are diploid (2n) organisms, which means that their cells contain two complete sets of homo-logous chromosomes (i.e., they have two copies of any given locus/gene). An allele can be defined as a variant of a gene, whereas diploid (2n) organisms have two alleles at each genetic locus, which are located on homo-logous chromosomes. In this case, we know that there are 580 dominant alleles in a population of 500 individuals, thereby the total number of alleles in this population is 1000 (2n >> 500 x 2 = 1000 alleles), and the frequency of the dominant allele is 0,58 (580/1000 = 0,58).

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Collecting data oncustomers and their relationships with a company (and commonlystoring it within a CRM system) helps make it possible to calculateCLV, or the total amount a customer will spend throughout theirrelationship with a company.After a review and analysis of your customer data you are ableto determine the following information:Average Value of Sales per Year per Customer: $120Average Customer Retention Cost: $75Customer Acquisition-oriented Marketing Expenses per Month:$1,000Average Customer Retention Rate: 80%You acquire an average of 25 new customers a month.Use the following equations to help determine the CLV:Average Customer Acquisition Cost = CustomerAcquisition-oriented Marketing Expenses per Month/Number of NewCustomers Acquired per MonthCustomer Lifetime Value = [1/(1-Average Customer Retention Rate)] x(Average Value of Sales per Year per Customer)- (Average customerAcquisition Cost + Average Customer Retention Cost)This activity is important because marketing managers need tounderstand and know how to calculate customer lifetime value as apart of customer relationship management. Knowledge of CLV caninform a number of critical marketing decisions related to suchfactors as the development of strategies designed to aid in theacquisition, nurturing, and retention of customers.The goal of this exercise is to test your understanding of CLVby considering this example.You must (1) complete the spreadsheet and (2) answer thequestions that follow to receive full credit for this exercise. mathhh raduiss please help need the answer asap i will give you brainliest Which best describes the incenter of a triangle? A. The point where the three altitudes of the triangle intersectB. The point where the perpendicular bisectors of the three sides ofthe triangle intersectC. The point where the three medians of the triangle intersectD. The point where the three angle bisectors of the triangle intersectSUBMIT what is the error in the sign? In HIJ, the measure of J=90, IH = 5, HJ = 4, and JI = 3. What is the value of the tangent of I to the nearest hundredth? 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