Franc rolled a toy car down a ramp and timed how long it took for the car to reach the bottom of the ramp. After one trial, the student doubled the height of the ramp and added sandpaper to surface of the ramp. He conducted three more trials. After reviewing the data, the student concluded the height of the ramp had no effect on the speed that the car traveled. Which is the most likely reason his conclusion is flawed? * 10 points The student misunderstood how to calculate speed A control should have been included in the investigation Too many variables were changed during the investigation More trials were needed during the investigation

Answers

Answer 1

Answer:

A control should have been included in the investigation  

Explanation:

It is impossible for the student to interpret a correct conclusion about his experiment, without adding a control treatment where he can really compare the differences between the variables.

Control treatment is an element of research that receives all factors, except the variable being tested. The control serves to make comparisons with the other treatments, allowing to observe the exact difference between a system where the variable was tested and the system where it was not.

In the case of the question above, it would have been necessary for the student to have placed a cart on a ramp of normal height and without sandpaper. That way he could compare the speed between this cart and the carts on the other ramps, thus having a correct result.


Related Questions

Why did colonial leaders from the separate 13 colonies decide to act together to oppose British laws?

Answers

Answer:

Many colonists felt that they should not pay these taxes, because they were passed in England by Parliament, not by their own colonial governments. They protested, saying that these taxes violated their rights as British citizens. The colonists started to resist by boycotting, or not buying, British goods

Explanation:

Answer:

I hope this helpful for u.please mark me as brainliest

Explanation:

The governments of the Thirteen Colonies of British America developed in the 17th and 18th centuries under the influence of the British constitution. After the Thirteen Colonies had become the United States, the experience under colonial rule would inform and shape the new state constitutions and, ultimately, the United States Constitution.

The executive branch was led by a governor, and the legislative branch was divided into two houses, a governor's council and a representative assembly. In royal colonies, the governor and the council were appointed by the British government. In proprietary colonies, these officials were appointed by proprietors, and they were elected in charter colonies. In every colony, the assembly was elected by property owners.

Brian has just finished college. He wants to set up a small business to make and sell fireworks

Answers

Answer:

Step 1: Conduct market research. ...

Step 2: Write your business plan. ...

Step 3: Fund your business. ...

Step 4: Pick your business location. ...

Step 5: Choose a business structure. ...

Step 6: Choose your business name. ...

Step 7: Register your business.

Explanation:

Does the federal government rise taxes

Answers

Answer:

Yes they can

Explanation:

it's the answer

Select all that apply.
A "lost" language is:
1. A language, such as Armenian, that is no longer spoken.
2. A language, such as Greek, that has no traceable language family.
3. It's lost because scholars can't find its exact source.
4. Supported by a large number of cognates across differing languages.
5. Indo-European in origin.

Answers

Answer:

A language that has gone extinct over time.

what is social problems?​

Answers

any condition or behavior that has negative consequences for large numbers of people and that is generally recognized as a condition or behavior that needs to be addressed.

Explanation:

this definition has both an objective component and subjective component.

The Paleolithic Period began when humans first started doing which of the following?

Answers

Answer:

Explanation:In the Paleolithic period (roughly 2.5 million years ago to 10,000 B.C.), early humans lived in caves or simple huts or tepees and were hunters and gatherers. They used basic stone and bone tools, as well as crude stone axes, for hunting birds and wild animals

In the Paleolithic period (roughly 2.5 million years ago to 10,000 B.C.), early humans lived in caves or simple huts or tepees and were hunters and gatherers. They used basic stone and bone tools, as well as crude stone axes, for hunting birds and wild animals.

Read this excerpt from The History of the Peloponnesian War by Thucydides.

Our constitution does not copy the laws of neighbouring states; we are rather a pattern to others than imitators ourselves. Its administration favours the many instead of the few; this is why it is called a democracy. If we look to the laws, they afford equal justice to all in their private differences; if no social standing, advancement in public life falls to reputation for capacity, class considerations not being allowed to interfere with merit; nor again does poverty bar the way, if a man is able to serve the state, he is not hindered by the obscurity of his condition.

–The History of the Peloponnesian War, Thucydides

Based on the excerpt, what is one reason Thucydides wrote this passage?

He wanted to explain why the Greeks copied other groups’ forms of government.
He wanted to explain how other civilizations imitate the Greek form of government.
He wanted to describe how Greek law favors those who were born to more nobler classes of people.
He wanted to explain how democracy works in Greece as compared to other forms of government. pls hury

Answers

Answer:

your answer is d.

Explanation:

Answer:

D. He wanted to explain how democracy works in Greece as compared to other forms of government

Explanation:

I did the quiz on “ The Achievements of Ancient Greece “ Got 90% ( But the question was right ) proof \/ \/ \/ Hope this will help with future people

Reread paragraph 6. The facts in this
paragraph are evidence that

PLEASE I need a answer :(

Answers

Answer:

Where's the paragraph?

HELP ME PLZZ I NEED HELP WITH THIS!!

Answers

Answer: D

The red fox is the largest of the true foxes and one of the most widely distributed members of the order Carnivora, being present across the entire Northern Hemisphere including most of North America, Europe and Asia plus parts of Northern Africa. It is listed as least concern by the IUCN.

(i would have just put the answer but it says it was too short to send so i just wrote what a red fox is so i could send the answer)

What is the main job of any government?

Answers

Answer:

The main role of any goveenment is to handle state affairs

La región Pacífica posee una gran biodiversidad y recursos minerales. Sin embargo, en el aspecto sociocultural predomina la pobreza y hay una débil presencia del estado. ¿Qué cambios en la regionalización pueden proponerse a partir del aspecto sociocultural de la región Pacífica?

Answers

La respuesta correcta a esta pregunta abierta es la siguiente.

La región Pacífica posee una gran biodiversidad y recursos minerales. Desafortunadamente esos recursos naturales no han sabido aprovecharse correctamente en beneficio de las personas, ya que los gobiernos corruptos han sido incapaces de desarrollar programas que maximicen el manejo de esos recursos. Por el contrario, lo manejan de manera opaca para robar e incrementar la riqueza delos políticos y algunas empresas.

Por esa razón, en el aspecto sociocultural predomina la pobreza y hay una débil presencia del estado. No existe la voluntad política de generar soluciones de fondo que eliminen las prácticas corruptas y en cambio, se enfoquen a general fuentes de empleo para las personas.

¿Qué cambios en la regionalización pueden proponerse a partir del aspecto sociocultural de la región Pacífica?

Una mayor unión y concientización de que las personas deben organizarse adecuadamente para expresar su voz y que ésta sea escuchada por los distintos actores gubernamentales.

De igual manera, una nueva generación de políticos y empresarios que demuestren responsabilidad social en la explotación y manejo de recursos materiales.

Which of the following is not a norm?

A. Personality
B. Folkway
C. Mores
D. law

Answers

I think it’s c because folkways is just how people celebrate or do different things and different is not bad

Answer:

A. Personality

Explanation:

Got it right!

primary groups are characterized by face to face interaction​

Answers

Explanation:

Face-to-face interaction: Primary groups are characterized by close intimate and face to face interaction. Intimacy: Here everyone knows everyone else and there is strong intimacy among the members. They are even known to nick names of their members. ... Small in Size: Primary groups are smaller in size.

A primary group is a term that is primarily defined by close, personal, and geographically local social ties that have a tendency to last and serve as the main source of socialization and support.

What is a Primary group?

The foundation of all social organizations is the primary group. It is a tiny gathering where just a few people interact directly with one another. For mutual assistance, company, and discussion of common issues, they get together "face to face." They are constantly aware of and thinking about one another.

The first sociologist to call attention to primary groups, Charles H. Cooley, explains them as follows:-

I refer to main groups as those that value close, face-to-face interaction and cooperation. They are vital in defining the social nature and ideals of the individual, which is the main way in which they are primary.

Learn more about Primary groups, from:

brainly.com/question/14885504

#SPJ2

2 similarites and 2 differences between the life of the hunter-gather and the life of a settled farmer​

Answers

Answer:

Explanation:

First, hunter-gatherers enjoyed a varied diet, while early farmers obtained most of their food from one or a few starchy crops. ... Second, because of dependence on a limited number of crops, farmers ran the risk of starvation if one crop failed.

The graph shows the supply and demand curves for a certain product, which has a current selling price of $500. The laws of supply and demand most support which conclusion about the product?

A. The current selling price for the product is too high.
B. The current selling price for the product is too low.
C. The current selling price for the product is the result of a shortage.
D. The current selling price matches the product's equilibrium price.

Answers

The above graph shows the supply and demand curves for a certain product that has a current selling price of $500 is that the current selling price for the product is too low.

What do you mean by selling price?

A selling price refers to the price needed to pay by the customer to purchase a product or a commodity.

The laws of supply and demand support the conclusion that the current selling price for the product is too low.

Therefore, B is the correct option.

Learn more about the selling price here:

https://brainly.com/question/21903283

#SPJ2

Answer:

its a

Explanation:

The image shows the Pyramid of Giza, with the Sphinx
in the foreground.
This image represents ancient Egyptian advancements
in which area?
O architecture
O government
O philosophy
O science

Answers

it should be architecture
Hope this helps!!

Answer:

architecture

Explanation:

because architecture means the art or practice of designing and constructing buildings.


Who said "If you don't work, you won't eat" ?

Answers

Answer:

Captain John Smith

Explanation:

Google

Answer:

no

Explanation:

because im a diet girl

Do you think that the internet has some dysfunctions that Americans should consider ? consider the advantages and disadvantages of the internet on society

Answers

Answer:

The advantages and disadvantages of the internet on society is explained below in details.

Explanation:

The Advantage:

With the Internet evolved the advantage of online shopping. Rather than having to run to a marketplace and wait in long queues to make shopping, you can instantly do all of your purchasing with a few clicks of the mouse. Also, the Internet make it simpler for individuals to rate compare between several online retailers to see which one allows the best choices and prices.

The Disadvantages:

While the Internet-delivered assistance for people to make online shopping, this also produced yet another way for cyber criminals to steal private information and to spread malware.

During the early 1600s, most workers on Virginia tobacco plantations were
debtors.
indentured servants.
enslaved Africans.
enslaved American Indians.

Answers

Answer:

indentured servants.

How realistic is your self image?

Answers

Answer:

We are what we pretend to be. So, there is no perfectly packaged "realistic" us. But there does exist a room within us that comprises of ethics, morals and discipline, which we can never disobey. And, if you consider that as a self image then, yes my self image is as realistic as bread and butter we crave.

Why does tobacco grow so well in Jamestown Virginia compared to northern climates?

Answers

Answer:

Northern climates are too cold to grow tobacco. Jamestown Virginia isn't too hot or cold.

Explanation:

Answer:

Tobacco wears out the land, exhausting minerals and nutrients from the soil. The first Virginia colonists to acquire ownership of land were positioned to gain great wealth, permitting them to abandon old fields and plant in fresh soil that would produce great quantities of the crop.

Who created the first movie rating system? (please answer ASAP)

A) Censorship board


B) Hollywood producers


C) The American Civil Liberties Union


D) The United States Government

Answers

Answer:

my choices option C the American Civil liberties Union

Explanation:

please if the answer is correct mark me as brain list

The Articles of Confederation were written by __________.
A.
the legislature
B.
Thomas Jefferson
C.
George Washington
D.
the Second Continental Congress

Answers

It would be
Benjamin Franklin but I don’t see that as a choice
The answer is D because it was written by the continental congress

Why was South Carolina able to flourish under the economic system of mercantilism?

Answers

Answer:

South Carolina prospered as it grows cash crops which helped in generating wealth.

Explanation:

The location of South Carolina, with the rich soil, encouraged the development of agricultural production. The mercantile system of the British help establishes colonies in America so that they could gain raw materials and make profits. Sugar, lumber, wool, indigo, tobacco, and rice,  were very profitable for South Carolina planters. South Carolina became a large producer of rice and indigo. The city of Charleston (South Carolina) became a transportation hub for exporting valuable cash crops.

Answer this please there will be another qestion worth more points

Answers

Answer:

.....123.....

Explanation:

Answer:

A

Explanation:

Im jesus

2)
What do you mean by soil conservation? Suggest any four suitable measures
of soil conservation in your area.​

Answers

Answer:

soil conservation practices are tools the farmer can use to prevent soil degradation and build organic matter. These practices include: crop rotation, reduced tillage, mulching, cover cropping and cross-slope farming

Explanation:

How did owning large amounts of land affect the Roman Catholic Church?

It gave the church political power.
It cost the church most of its wealth.
It allowed the church to pay mendicants.
It caused the church to focus less on education.

Answers

Answer: A.

Explanation:

Trust me :)

Answer:

A. it gave the church political power

Explanation:

have a great day

Although risk factors at all levels of social and personal life contribute to youth violence, young people in all nations who experience change in societal-level factors—such as economic inequalities, rapid social change, and the availability of firearms, alcohol, and drugs—seem the most likely to get involved in violence. Can anything be done to help alleviate these social problems?

Answers

The correct answer to this open question is the following.

Can anything be done to help alleviate these social problems?

Yes, I think different things can be done to try to help young people to have a decent life, instead of forcing them to become criminals.

Crime rates have increased in some parts of the country and this is no good. In other countries, particularly in developing countries, the numbers have increased more due to the political and economic circumstances of each country.

The government can create some social programs that allow young people to drop vices such as alcohol or dr*ugs, and try to get them back to normal social activities.

There have been presidential initiatives, such as the case of the Mexican President Andrés Manuel López Obrador, that has successfully created a series of programs to install young people back to private companies to get decent jobs in exchange for economic retribution.

The government can also create legislation to control the sale of guns, or stronger penalties for crimes.

There are also social groups or non-governmental groups that have offered some help through rehabilitation clinics, training, community work, and other activities, trying to offer young people a series of skills so they can start a better life.

What does a division of labor mean?

Answers

Answer:the assignment of different parts of a manufacturing process or task to different people in order to improve efficiency.

Explanation:hope this helps

can someone answer this please

Answers

Answer: 2nd one

Explanation: There’s more green and some purple, this means theres a higher population on those areas.

You can take out the 3rd one since being buddist is irrelevant on the map.

Capital cities have the regular 200 population so most people don’t live there compared to the coast.

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