Chemistry Middle School

In a tug of war, a man pulls with a force of 100 N on the right, while a man on the left side pulls with a force of 80 N. What is the net force?

Answers

Answer 1

Answer:

20 N I think this is the the right answer.

Explanation:

Answer 2

Answer:

the net force is 20 n to the right

Explanation

Related Questions

Which stage follows anaphase I?

metaphase I
telophase II
anaphase II
telophase I

Answers

Answer: telophase 1

Explanation: in anaphase 1 the chromosomes are being pulled apart. The next stage of mitosis is telophase 1 where the chromosomes are surrounded by a new nuclear membrane and start breaking down.

Hope this helps!

Telophase I. The six stages of meiosis are prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis.

Complete the sentences to describe the structure of DNA. The shape of the DNA molecule is called a double . The backbone of DNA is made of molecules and phosphate molecules. The "rungs" of DNA are made of .

Answers

Answer:

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.

The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people. The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.

DNA bases pair up with each other, A with T and C with G, to form units called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix. The structure of the double helix is somewhat like a ladder, with the base pairs forming the ladder’s rungs and the sugar and phosphate molecules forming the vertical sidepieces of the ladder.

An important property of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases. This is critical when cells divide because each new cell needs to have an exact copy of the DNA present in the old cell.

DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.

The National Human Genome Research Institute (NHGRI), a part of the National Institutes of Health (NIH), provides a fact sheet Deoxyribonucleic Acid (DNA) that gives an introduction to this molecule.

StatedClearly offers a video introduction to DNA and how it works.

The New Genetics, a publication of the National Institute of General Medical Sciences, part of the NIH, discusses the structure of DNA and how it was discovered.

A basic explanation and illustration of DNA can be found on Arizona State University's "Ask a Biologist" website.

The Virtual Genetics Education Centre, created by the University of Leicester, offers additional information on DNA, genes, and chromosomes.

An overview of mitochondrial DNA is available from the Neuromuscular Disease Center at Washington University in St. Louis.

The shape of the DNA molecule is called a double helix. The backbone of DNA is made of sugar molecules and phosphate molecules. The "rungs" of DNA are made of four nitrogen bases that are adenine, thymine, guanine, cytosine.

What is DNA ?

The molecule found inside cells that contain the genetic information necessary for an organism's development and function. DNA molecules enable this information to be passed down from generation to generation.

DNA is made up of a series of molecules known as nucleotides. A nitrogen base, a sugar group, and a phosphate group are all present in each nucleotide. Adenine (A), Thymine (T), Guanine (G), and Cytosine (C) are the four nitrogen bases that can be found in DNA (C). There are billions of DNA bases in human DNA.

It stores instructions for the production of larger molecules known as proteins. These instructions are stored within each of your cells and are distributed across 46 long structures known as chromosomes.

Thus, chromosomes are composed of thousands of shorter DNA segments known as genes.

To learn more about the DNA, follow the link;

https://brainly.com/question/264225

#SPJ3

HELP ASAP/ If both crossing over and independent assortment occur during meiosis, which type of cells will result?

four genetically identical cells
four genetically different cells
two genetically identical cells
two genetically different cells

Answers

Answer:

sorry i am a month late but your answer will be b

Explanation:

i did the unit test review and got the answer right

Answer:

I think B

Explanation:

HELP MEPLEASE SOMEONE REALLY REALLY REALLY SMART PLEASE
What is the mass of an atom with seven protons, seven neutrons, and eight electrons?
EXPLAIN:

Answers

Explanation: The atom is a nitrogen atom and the mass of the atom is 14.0067 u.

Which term refers to an element that conducts electricity at high temperatures, but not at low temperatures?

semiconductor

halogen

conductor

metal

Answers

Answer: metal

Explanation: it says element so conductor and semiconductor are out and a halogen is a group of gases on the periodic table so this brings up to a conclusion of metal.

NOTE: I am not a professional***

semiconductor

This is the answer

help me ill give you brainliest

Answers

The first one is 18.0 ! Just add both of them together!

Which choice best describes the Law of Conservation of Energy? Group of answer choices Energy is lost and cannot be recovered. Energy cannot be created or destroyed. Energy cannot be transformed. Once energy is used, it cannot be used again.

Answers

Energy can not be created nor destroyed

Pls help me I don’t understand it’s for my science class.

Plz check if correct and tell me wether each is element or compound

Answers

Answer:

gold pure substance heterogeneous

Gold pure substance Heterogeneous

How does changing the Frequency affect the energy of the wave?

Answers

If the frequency of a wave increases, its energy will increase. While if the frequency of a wave decreases , its energy will decrease.

Hope this helps.

Please mark as brainliest...........

Give a Convincing Argument that muscles are alive because they are made out of cells

Answers

I think they are alive bc they are in a living body with cells

A chimpanzee and a pine tree have very little in common. However, because they are both living things, we can be certain that they both -

A .use the sunlight to make their own food.

B. travel with other members of their species.

C.are made up of one or more cells.

D .have a skeleton that allows them to move.

Answers

i think the answe is C i’m not postive tho

Energy that is absorbed by the land and water is changed into

A.visible light

B.infrared radiation

C.Ultraviolet radiation

Answers

the answer is B. the energy is changed into heat energy which is also known as infrared radiation.

Answer:

it's heat energy it B I'm pretty sure I did this it was correct

Explanation:

BBBBBB

Someone answer all of these questions for me please

Answers

Answer:

Explanation:

What is this grade?

How does water move between the hydrosphere and atmosphere?

Answers

Answer:

Water moves between the hydrosphere and atmosphere through evaporation condensation and precipitation.

Explanation:

Brainliest plz

Water is a renewable resource that is present in the spheres of the earth. The water moves between the hydrosphere and atmosphere through evaporation, condensation, and precipitation.

What are changing states of matter?

The different matters can be changed into one another through various methods that include evaporation, condensation, and precipitation. In the water cycle, the water from the hydrosphere gets evaporated from the liquid to the vapor phase.

The evaporated water vapor then condenses and cools down to form and store in the clouds. Then the condensed vapor in the atmosphere collectively comes back to earth in the form of precipitate that can be rain, snow, sleet, hail, etc.

Therefore, the water cycle involves evaporation, condensation, and precipitation to move water between the hydrosphere and the atmosphere.

Learn more about changing states of the matter here:

https://brainly.com/question/7413253

#SPJ2

How do conduction and convection differ?

a Conduction can move through empty space to transfer heat; convection cannot.

b Conduction does not require objects to have direct physical contact; convection does.

c Conduction requires objects to have direct physical contact; convection does not.

d Conduction transmits heat through electromagnetic waves; convection does not.

Answers

conduction requires objects to have direct contact; convection does not.

Which law is represented by the description:

The bottom domino is knocked out from a stack of dominoes when an outside force is applied.

1st Law of Motion
2nd Law of Motion
Or
3rd Law of Motion

Answers

Answer:

Si hay algo que sucedió entre ustedes raro o un comportamiento que tuviste con esa persona o que te vio hacer asi como le pudieron decir algo de ti que no le gustara a tu amigo hace que se comporte raro contigo

Explanation:

which one is a balanced equation and an unbalanced equation? picture and equation are in the picture. thanks!

Answers

Answer:

The first is balanced and the second is unbalanced.

Explanation:

Hope I helped! Please mark Brainliest!

Answer: 1st is unbalanced 2 is balanced

Explanation:

The solid on the copper square after the experiment is called copper acetate. Write a word equation to represent what happened to substances in the experiment. Label the reactants and products in the equation.

Answers

Answer:

copper + acetic acid --> copper acetate

copper and acetic acid are reactants

copper acetate is the product

The frequency of a D-sharp sound wave in music is 380 Hz, and its wavelength is 0.95 m. What is the wave speed?

Answers

Answer:

462

Explanation:

Answer: I think is 380m wave speed

Explanation:

Other Questions

Sometimes, I have to take my cat, Gigi, in the car. She doesnt like this, and tends to hide under the couch when she knows she has to go. This means I have to drag her out. Assuming she is using her claws to try and stop me, identify the forces acting on Gigi, and draw a free body diagram for the situation. Make sure you label each force and identify where its coming from. Which group of people were brought forcefully into the colonis? A Africans B. Native Americans C. Australians D. John Rolfe The interest yields on U.S. Treasury securities in early 2009 fell to very low levels as a result of the combined events surrounding the global financial crisis. Calculate the simple and annualized yields for the 3-month and 6-month Tresury bills auctioned on March 9, 2009, listed here. 3-Months T-bills 6- Months T- billsTreasury bill, face value $10,000 $10,000Price at sale 9993.93 9976.74Discount 6.07 23.07 7th grade help me plzzzzzzzz Please help me!!!adapted from Submarinesfrom The Story of Great Inventionsby Elmer Ellsworth Burns Successful navigation beneath the surface of the water, though not carried to the extent imagined by Jules Verne, was a reality at the beginning of the twentieth century. Instead of twenty thousand leagues under the sea, less than a hundred leagues had been accomplished, but no one can foretell what the future may have in store. The submarine is primarily utilized in wars. The weapon used by the submarine is the torpedo. The torpedo is itself a small submarine able to propel itself, and if started in the water toward a certain object, to go under water straight to the mark. It carries a heavy charge, either of guncotton or dynamite, which explodes when the torpedo strikes a solid object, such as a battle-ship. It would be very difficult for one submarine to fight another submarine, for the submarine when completely submerged is blind. It could not see in the water to find its enemy. The torpedo-boat-destroyer is able to destroy a submarine by torpedoes, shells full of high explosives, or quick-firing guns. Advantage must be taken of the moment when the submarine comes to the surface to get a view of her enemy. One of the great enemies of the submarine will probably be the air-ship, for while the submarine when under water cannot be seen from a ship on the surface, it can, under favorable conditions, be seen from a certain height in the air. The rising and sinking of the submarine depend on the principle of Archimedes. The upward push of the water is just equal to the weight of the water displaced. If the water displaced weighs more than the boat, then the upward push of the water is greater than the weight of the boat and the boat rises. However, the boat can be made to dive when its weight is just a little less than the weight of the water displaced. This is done by means of horizontal rudders which may be inclined so as to cause the boat to glide downward as its propeller drives it forward. There is one submarine built for peaceful pursuits. It is the Argonaut, invented by Simon Lake. This remarkable boat crawls along the bottom of the sea, but not at an immense depth. It is equipped with divers' appliances, and is used in saving wreckage. Divers can go out through the bottom of the boat, walk about on the sea bottom, and when through with their work re-enter the boat; all the while boat and men are, perhaps, a hundred feet below the surface. The divers' compartment, from which the divers go out into the water, is separated by an air-tight partition from the rest of the boat. Compressed air is forced into this compartment until the pressure of the air equals the pressure of the water outside. Then the door in the bottom is opened, and the air keeps the water out. The men in their diving-suits can then go out and in as they please. For every boat, there is a depth beyond which it must not go. The penalty for going beyond this depth is a battered vessel, for the pressure increases with the depth. Every time the depth is increased thirty-two feet, the pressure is increased fifteen pounds on every square inch. Beyond a certain depth, the vessel cannot resist the pressure. Submarines have been made strong enough to withstand the pressure at a depth of five thousand feet, or nearly a mile. Most submarines, however, cannot go deeper than a hundred and fifty feet. Air is supplied to the occupants of the boat either from reservoirs containing compressed air or oxygen, or by means of chemicals which absorb the carbon dioxide produced in breathing and restore the needed quantity of oxygen to the air.Select all the correct answers.Read the sentence from the passage.The submarine is primarily utilized in wars.Which two words have a similar denotation to the word utilized as it is used in the passage?A tiltedB. AdvertisedC. AuthorizedD. UsedE. Employed What is the value of the expression 2^2x2^-2x3^4x3^-4 Explain the connection between genes and your traits. Be sure to use the word protein. PLEASE HELP ME FAST... WILL MARK AS BRAINLIEST IF GIVEN GOOD ANSWER HELP DUE IN IN 7 HOURS PLZ PLZ HELP I WILL DO ANYTHING REAL ANSWERS ONLY!!& increased competition for power among European states and led to imperialism.Help If a male horse has 64 chromosomes in his body cells, how many chromosomes are in each of his sex cells?163264128 Dead ocean animals fall to the bottom of the ocean. A scientist notices rock layers that have formed on the ocean bottom with fossils of some of these animals. What type of rock is this?PLS HELP Can someone please download this file and complete it for me... PLEASE!and before you say use translate I cant. How much eat is absorbed when 50.0g of water changes from 25.0 Celsius to 37.0 Celsius? enzymes are an example of which main class of organic compounds.(carbohydrates, lipids, proteins, or nucleic acids Which of the following statements are incorrect? A. A sodium atom has a smaller radius than a potassium atom.B. A neon atom has a smaller radius than an oxygen atom.C. A fluorine atom has a smaller first ionization energy than an oxygen atom.D. All are statements are incorrect dddddddddfggkkkkkkkkkkkjjjjhhhhhhhhbb Read the sentence.Leila stared at the driver of the shiny red convertible stopped in the middle of the intersection, incredulous that he would stop traffic just to yell at another driver behind him.What does the use of incredulous connote?that Leila is envious of the driver for having a convertiblethat Leila is angry at the driver for stopping in the intersectionthat Leila thinks she might know the driver of the convertiblethat Leila is shocked at what the driver of the convertible did Pls help Write out the C Major Scale one octave ascending and the C Major arpeggio one octave ascending. Why are the French forced to surrender to the British in September 1801? They retreat to Alexandria. Cairo falls to the Turks in June. They are outnumbered. Their scholars want to stay.