The woman riding the bike applies a force by pedaling the bike. However, she moves at a constant velocity. So her force must be balanced by another force. What force acts to balance her forward force?

Answers

Answer 1

Frictional Force is the one and only.

Answer 2
Friction force is the answer.

Related Questions

Obi is trying to determine if a powdery, solid substance is an element or a compound. After recording some observations, he strongly heats a sample of the solid over a burner flame. After fifteen minutes, he turns off the flame and allows the sample to cool. He records his final observations in the data table.

A 3-column table with 3 rows. The first column labeled observation has entries appearance, mass (g), chemical reaction with weak acid. The second column labeled original sample has entries white solid, 100.0, bubbles. The third column labeled sample after heating has entries white solid, 56.0, no bubbles.
Which is the best explanation of his results?

A. The heating changed some of the sample to gas, causing the mass to decrease without breaking down the sample. Therefore, the original sample is a compound.

B. The appearance stayed the same, showing that the sample was not broken down by heating. Therefore, the original substance is an element.

C. The mass decreased during heating and some of the impurities escaped. Therefore, the original substance is an element.

D. The chemical reaction with acid changed, showing that the sample was broken down by heating. Therefore, the original substance is a compound.

Answers

An element consists of one type of atom and cannot be broken into simpler substances through simple chemical processes

The correct option is option D

D. The chemical reaction with acid changed, showing that the sample was broken down by heating. Therefore, the original substance is a compound

The reason why option D is correct is as follows:

The given table is presented as follows;

[tex]\begin{array}{|l|l|l|}\mathbf{Observation}&\mathbf{Original \ Sample}&\mathbf{Sample \ After \ Heating}\\Appearance&White \ solid&White \ solid\\Mass&100 \, g&56 \, g\\Chemical \ reaction \ with \ acid&Bubbles&No \ bubbles\end{array}\right][/tex]

Given that the changes after heating includes lack of visible reaction with the weak acid, and a significant change in mass, therefore;

The original substance was broken down by heat resulting in a new substance that has different chemical properties. An element cannot be broken down into simpler substances. Therefore, the substance is a compound

The correct option is option D

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Which statement correctly describes the location and charge of a proton in an atom? A. The protons are inside the nucleus with a negative charge. B. The protons are inside the nucleus with a positive charge C. The protons are outside the nucleus with a negative charge. D. The protons are outside the nucleus with a positive charge.

Answers

After looking at it, the answer is B

Answer:

The correct answer is B

Explanation:

How were the novae on Venus similar to the landforms in Gerya’s computer model?

Answers

Answer:

Explanation:

The model results matched the novae on Venus. This provided evidence that Gerya's idea that a thinner crust and higher surface temperature might allow melted rock to push up toward the surface, forming novae.

CO2(g) + NH3(g) + H2O(l) → NH4HCO3(s) witch type of reaction plzz within 1 hour

Answers

combination reaction

WILL GIVE BRAINLIEST
List three examples of where potential energy is transformed to kinetic energy in the Rube Goldberg Machine simulation. Fully explain the energy transformations using complete sentences. (Example: The ball has potential energy when it sits on the shelf that transforms to kinetic energy when it falls to the ground.)

DO NOT COPY AND PAST THE ANSWER FROM 2018 AND IF YOU HAVE A QUSTOIN ABOUT IT ASK UNDER THE QUSTION DO NOT ANSWER IT TO ASK A QUSTION

Answers

Answer:

1. The ball will have potential energy at the top of the mountain, when the ball falls the ball will have kinetic energy .

2. The roller coaster has potential energy when stopped on the very top, therefore it releases kinetic energy when it falls down the rollercoaster.

3. The car on the hill had potential energy weather when it went down it had kinetic energy.

Explanation:

Sorry it took forever I had to think lol..

Answer:

ok lol

im bored

Explanation:

The data table shows the number of pumpkin seeds that germinate at different temperatures. What is the median number of seeds that germinate at 32ºC?
A. 64
B. 65.5
C. 65
D. 66

Answers

Answer: I agree with the other person it's B

The answer is most likely B.

Now, demonstrate a net force of 300 N to the right. How many ways can you do it?

Answers

Answer:

I've chose 5 ways to get there.

i think 4 or 5 not suree doe :)

You are looking at two samples of iron. One sample is very small and came from the red soil on the planet Mars. The other sample is very large and came from Earth's core. True or False, these two samples contain different atoms

Answers

The two samples don’t contain different atoms so it will be false

What element is this? Ignore my answer choice.

Answers

Answer:

Aluminum

Explanation:

It is your choice because only aluminum has 13 protons

Answer:

yea its aluminum the 13 element because of its 13 protons

Where does the force come from when a bumper car changes speed?

Answers

Answer:

Newton's second law

Explanation:

The rate of change of momentum of an object is equal to the net force acting on it. When bumper cars collide they push on each other. These pushes cause the momentum of each car to change.

The engine............

Which statement best describes what a circle graph shows?
A. A frequency distribution
B. Data as proportions of a whole
C. The average of a data set
D. The relationship between two variables

Answers

The answer is to the question would be B

A group of people take a diet pill. After 3 months, they measure the amount of weight they lost.
A :Independent Variable:
B: Dependent Variable:

Answers

dependent variable I think

dependent variable the person above is right too, I think

Which statement is true about the model of the atom below? * 20 points Captionless Image A. Positively charged particles are found outside the center of the atom. B. Negatively and positively charged particles are found in the center of the atom. C. Neutral and positively charged particles are found in the center of the atom. D. Neutral particles are found outside the center of the atom.

Answers

The answer is C. The nucleus contains protons (positivity charged) and neutrons (no charge.)
ik im not answering ur question but just wanted to say nice pfp

Which equation using element symbols correctly describes the reaction: "One molecule of methane plus two molecules of diatomic oxygen react to form two molecules of water and one molecule of carbon dioxide?"

Answers

Answer:

CH4+2O2→2H2O+CO2

In the early 1900s many scientists thought that an atom consisted of a positive substance with negative charges scattered throughout the substance. Then Ernest Rutherford made a discovery that led to the understanding that an atom consists mostly of empty space with- * 20 points A. protons orbiting a dense nucleus made of electrons and neutrons B. Neutrons and protons orbiting a cloud of electrons C. Electrons and protons orbiting a cloud of neutrons D. Electrons orbiting a dense nucleus made of protons and neutrons

Answers

The answer is D. (I think-)

Answer:

D(pretty sure)

Explanation:

What causes objects to move or stay still?
Claim

Reasoning:

Evidence:

Answers

Answer:

For an object to move, there must be a force. A force is a push or pull that causes an object to move, change direction, change speed, or stop. Without a force, an object that is moving will continue to move and an object at rest will remain at rest.

Explanation:

A student combined equal amounts of two solutions. One solution had a pH of 2 and the other had a pH of 12. Which would most likely be the resulting pH? 1 3 6 11

Answers

Answer:

6

Explanation:

Answer:

6

Explanation:

As the toy car rolls away, it slows down. Why?

Answers

Answer:

Friction

Explanation:

Depending on the material the toy car rolls away on, the more friction is created, the more friction there is, the more on surface rubs against another, creating friction, slowing it down

hope this helps

Please help me identify the element. The picture is blurry so..

Answers

Answer:

Explanation:

aluminium

Aluminum





Explanation

Which description of salt is a physical property?
A. No combustion
B. Makes ionic bonds
C. Product of mixing acids and bases
D. Solid does not conduct electricity

Answers

Answer: it was in the lesson, the answer is it is solid and does not conduct electricity

Explanation:

Physical Properties                                 Chemical Properties

White cubic crystals                                 Do not undergo combustion

Odorless, salty taste                                 Make ionic bonds easily

As solids, they do not conduct electricity  The product of mixing acids and bases

D. Solid does not conduct electricity
Probably

I need help ASAP! 10 points!

Answers

Answer:

The answer to this question is ( a )

Explanation:

ionic: transfer of electrons covalent: sharing of electrons

Two students make a model of a tree house they want to build. The sale is 1:44. In the scale model, the tree house has 2 windows. How many windows should be the real tree house have?
A. 22
B. 88
C. 4
D. 2

Answers

D. 2

The scale is talking about how if on the model it states the wall is 1 foot you would make it 44 feet The windows and doors are just there to make sure you don’t forget them. Hope this helped! :D

Which subatomic particles change the mass number? (select all that apply) Protons Neutrons Electrons

Answers

protons and neutrons i think , sorry if i’m wrong.

Answer:

protons and neutrons pretty sure

Explanation:

What is the chemical symbol for table salt?

Answers

Answer: NaCI

Explanation:

Answer: NaCl

Sodium chloride , commonly known as salt (although sea salt also contains other chemical salts), is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.

235
92
U +
1
0
n →
90
36
Kr +
A
56
Ba + 3
1
0
n

Answers

Answer:

A= 143 B=146 C=56

Answer:

A: 143

B: 146

C: 56

Explanation:

SCIENCE!! i need help on the question in the middle please!!!

Answers

The earth would be the answer because it has the most mass and is heavier than all of the other objects
The earth is the answer

2. When the child is pushed in the toy car, he increases speed. Does he accelerate as he is being pushed?

Answers

Yes. Look up Newton’s laws of physics. That should help
I am pretty sure he does because he is going faster

Which two models would be most useful in predicting weather?
A. A mathematical model based on data
B. A plastic model of a cloud
C. A map that shows wind patterns
D. A peach used to represent Earth

Answers

Answer:

A. A mathematical model based on data

A mathematical model based on data and a map that shows wind patterns   would be most useful in predicting weather as it they will provide data with most accuracy.

What is accuracy?

Accuracy in terms of chemistry can be defined as to how close a measurement is to the true value.There are three types of accuracy:

1) Point accuracy-It means accuracy is present at that point of scale only.It does not give any information about the accuracy of the instrument.

2)Percentage of true value--It is the accuracy  which is determined by identifying accuracy of the instrument  and comparing it with the measured true value.

3)Percentage of scale range- It is the accuracy  which determines accuracy of the measurement.

Accuracy in case of instruments  is neglected up  to ±0.5 percent.

Learn more about accuracy,here:

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What is the formula name!!
I will give brainliest !!…

Answers

Answer:

I think this is the formula CH₃COOH.

Explanation:

the person above me is correct:)

Which statement best describes properties of elements? A) All elements have a similar structure and hardness. B) All elements are either metals or gases. C) All elements are solid and magnetic. D) All elements have mass and occupy space

Answers

Answer:

D

Explanation:

That is the right answer

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