In which direction does friction act?
1. in the same direction as the motion
2. at right angles with the motion
3. the opposite of the direction of motion
First one to answer will get a brainliest!

Answers

Answer 1

Answer: the opposite of the direction of motion

Explanation:

Answer 2
Answer: friction is acts in a direction opposite to the motion of the object.

Related Questions

How do proteins respond to help heal a wound?

Answers

How does protein help with wound healing? Your body needs protein to help build and repair muscle, skin, and other body tissues. Protein also helps fight infection, balance body fluids, and carry oxygen through your body. When you have a wound that's healing, think of food as medicine.

to help build and repair muscle, skin, and other body tissues.

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PLS HELP DUE SOON(Ignore that wet thingy on my paper it’s my matcha latte it go on it lol)

Answers

Answer:

well for

1. Because cytoplasm is made of a jelly like consistent

and

2. wastes product are transported by endoplasmic reticulum ,from organelles to outside cell ,so if cell size is big ,it will take more time in transportation and vice versa

Answer: Hello

Explanation: Hello

PLEASE HELP
Sheila and Jerome are lab partners. They have the following materials at their table:

1 square of aluminum foil, 1 stirring rod, 1 beaker of water, 1 scoop of copper II chloride salt (blue color)


Step 1:Jerome adds all the salt to the water and stirs. The salt crystals disappears and the liquid solution turns a clear blue.

Step 2: Sheila tears up the aluminum foil into small pieces.

Step 3: Jerome dares her to put the foil in his beaker. They see the edges of the foil turn a rusty orange. As they stir, the beaker becomes warm to the touch and a vapor begins to rise from the surface of the beaker. Within a few minutes, the foil has disappeared and the liquid is now clear. There are orange-rust colored flakes floating in the liquid.


Q: Jerome claims that when the salt was added to the water it turned blue and the foil disappeared, these were chemical changes. He went on to explain that the chemical change was due to the fact that the atoms were speeding up. Sheila disagrees claiming that 1 is a physical change and 1 is a chemical change and Jerome’s evidence is incorrect. Who is correct, Jerome or Sheila? Write a scientific explanation (CER) to support your argument.

Answers

Answer:

jerome

Explanation:

jerome is correct
and do u need the reason why if so comment back to this

Name the 5 characteristics needed for a substance to be a mineral

Answers

naturally occuring, solid, inorganic, crystalline, structure, ans the same chemical composition throughout.

Answer:

A mineral has to be naturally occurring, inorganic, solid, crystal structure and definite chemical composition.

Explanation:

speed =________

ate divided by time

rate divided by distance

distance divided by time

time divided by rate

I need answer asap! Plz someone help ! Ill give brainliest!

Answers

Answer:

Distance divided by time is the answer. :)

Explanation:

Distance divided by time

glacial striations in the bedrock of south africa indicate that glaciers once moved across the african continent the presence of glaciers on the surface of africa is evidence that

Answers

The presence of glaciers on the surface of Africa is evidence that it moved outwards from a central point in southern Africa.

What is a Glacier?

This is defined as the persistent body of dense ice that is constantly moving under its own weight.

Glaciers being found on African surface depicts that the movement occurred outward from Southern Africa during the period.

Read more about Glaciers here https://brainly.com/question/6666513

Is gravity alone sufficient to explain the behavior of the tinsel in the Levitating-orb system? Explain why.

Answers

Answer:

The object is moving forward

Explanation:

Hop this helps :)

Answer: The orb is attracted to the pipe at first because the orb has a positive charge. As soon as the orb touches the pipe, it picks up a negative charge. Since the pipe is negative and the tinsel orb is now negative, they repel away from each other and the orb levitates!

HELPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!! 30 POINTS!!!!!!!!!!!!!!

Answers

Answer:

What is this please send questions properlythen i will answer it properly

Martin slowly pours an unknown liquid into a container that originally had some water in it. He is measuring the temperature in the container as he does this.

The temperature in the container rises very fast.

What kind of change is likely to be happening in the container?

A. A physical change.

B. A chemical change.

C. Neither a chemical nor a physical change, only a temperature change.

D. No evidence of any type of change.

Answers

b. a chemical change

PLS HELP (science)
Match the following molecules with the number of atoms they contain.

1. 2Fe
seven
2. 2Al 3O 2
eight
3. 4O 2
two
4. 5C
five
5. H 2SO 4
ten

Answers

Answer:

hello I will answer ur question if u answer mine

Explanation:

1. Two
2. Ten
3. Eight
4. Five
5. Seven
Just count the number number of substances, the subscript(number at the bottom) tells you how many of it there is. Then you check if there is a coefficient(number in front of all the substances) and if there is a number you multiply you previous answer by it. The coefficient tells you how many molecules there is. Your final answer is the number of atoms!

A food scientist is determined to create a mango that looks exactly like a mango but tastes like salmon. Can this be achieved through artificial selection? Why or why not?

Answers

Answer:

depends on the artificial 'materials' used and the food scientist

Explanation:

If the food scientist is skilled enough and works hard enough this it might be possible but this does seem like a difficult task i personally doubt that this could be done until next few years. :)

No , Because ripened orange tastes different than artificial so we can know

Which phrase describes a feature of groundwater?

-feeds rivers
--provides habitats
-makes up 75% of fresh water
--used for hydroelectric power

Answers

Answer:

number 1

Explanation:

Groundwater mainly contributes the water into the surface water like streams, rivers, and lakes.

Groundwater feeds rivers describes it feature.

What is ground water?

Groundwater refer to the water that is below Earth's surface and they infiltrate the fractures of rock formations and spaces between sediments.

Ground water replenish the rivers, streams and lakes.

Therefore, Groundwater feeds rivers describes it feature.

Learn more on groundwater from the link below.

https://brainly.com/question/9617

This is the chemical formula of Nitrogen gas.

N₂

Which of the following is NOT true of nitrogen gas?

A. It is made of two atoms.

B. It is a molecule.

C. It is an element.

D. It is a compound.

Answers

D is incorrect it is not a compound.

Answer:

D

Explanation:

N₂ is not a compound because it is not made up of two or more different elements - it is only made up of nitrogen atoms

Hope this helps!

Iodine-138 decays by beta decay. What element does it produce?

Answers

[tex] {xe}^{138} [/tex]

Explanation:

the bottom number would be 54. This is because you add one to 53 to make it 54 and you add 0 to 138.

Plz, Help! Read the instructions and answer the question! First one to answer will get brainliest!

Answers

Answer:

H₂S: Hydrogen Sulfide: 3 atoms

HCl: Hydrochloric acid: 2 atoms

NaCl: Sodium Chloride: 2 atoms

CaCO₂ : Calcium Carbonate: 3 atoms

Explanation:

I'm not sure about the answer but this is the best I could do hope it helps

since I'm a 9th grader I know something about this.

Answer:

wish i could help but i dont remember learning this

Explanation:

Hydrogen and oxygen undergo a chemical reaction to form water. How much water will be created if hydrogen has a mass of 3.56 g and the oxygen has a mass of 25.32 g?

Answers

Answer:

22.88g

Explanation:

Hope this helped <3

22.88g is the answer i’m pretty sure correct me if i’m wrong anyone

Place the events in the order that they must occur for a fossil to be formed in sedimentary rock.

Answers

The answer is two, one,and then three

How do wetlands form?

- tributaries flow into rivers.
• Runoff travels down the side of a divide.
ɷ Water builds up in a depression left by an ice sheet.
• Groundwater comes to the surface and floods the land.

take your time :) !

Answers

Answer:

I think it's "Water builds up in a depression left by an ice sheet."

Explanation:

I think.

Water builds up in a depression left by an ice sheet!

help me pls
words from the video:

What do fireworks, a fried egg, and a rusting vehicle have in common? They all involve chemical reactions. If two or more elements or chemical compounds come into contact with one another and there is enough energy present, a chemical change may take place.

When a substance undergoes a chemical change, the chemical structure of that substance is altered. A chemical change can also be called a chemical reaction. During a chemical reaction a new substance is formed.

Observe the chemical reaction between bromine and aluminum. Pieces of aluminum are cut from a strip of foil and added to liquid bromine. At first there is no reaction because of the protective oxide coating on the aluminum. But soon an exothermic reaction between bromine and aluminum causes brown fumes of bromine to be given off. But as a new substance, aluminum bromide is produced. White smoke is produced.

The resulting residue is also aluminum bromide. When two compounds or molecules react together to form new substances, they are called reactants. They new substances created plus any resulting ash, water vapor, or carbon dioxide are called products, because they are produced by the reaction.

Some chemical reactions, such as the explosion of fireworks, can happen very fast—in less than a second.

Others, like the rusting of a car, might take years. It is important to carefully examine chemical reactions because there are many ways substances can be changed without a chemical reaction taking place.

Changes of state, for example, from a solid to a liquid or from a liquid to a gas, always involve a physical change rather than a chemical one. Melting sulfur is a good example. When solid sulfur is heated to 120 degrees Celsius it melts and first forms a pale yellow liquid.

In this form the atoms are covalently bonded and the liquid can flow easily. However, heated up beyond 150 degrees Celsius, the result is a dark red liquid that is over 2,000 times stickier. The sulfur may have changed physically but it's still sulfur.

No chemical reaction has taken place. Most of the time changes of state can be reversed by either adding or taking away heat. When water is boiled, for example, water vapor molecules are released in the process.

If you captured all the vapor molecules in a container they would reform again as water droplets once the vapor cooled. When a chemical change occurs it is more difficult to revert the substance back to its original state.

Answers

Answer:

this is answers to the second picture

Explanation:

1-   energy

2- structure

3- reaction

4- substance

5- reactants

6- products

7- changed

8- At first there is no reaction because of the protective oxide coating on the aluminum. But soon an exothermic reaction between bromine and aluminum causes brown fumes of bromine to be given off. But as a new substance, aluminum bromide is produced. White smoke is produced.

9-   heated to 120 degrees Celsius it melts and first forms a pale-yellow liquid.

In this form the atoms are covalently bonded, and the liquid can flow easily. However, heated up beyond 150 degrees Celsius, the result is a dark red

10- When a chemical change occurs it is more difficult to revert the substance back to its original state. (To be honest I don't know)

What will a soccer player need to do to change a ball’s position?
1. He must apply gravity to the ball so that the ball will move.
2. He must weigh the ball to determine the motion that needs to occur.
3. He must set the ball in motion by applying a force in the desired direction.
4. He must identify the location of the ball.
First one to answer will get brainliest!

Answers

Answer:

He must set the ball in motion by applying force in the desired direction.

Explanation:

That is how the soccer player will change the ball's position.

Have a good day :)

Answer:

4. He must identify the location of the ball.

Explanation:

If a soccer player needs to change his position, then he will need to identify the location of the ball.

hope this helped.

Based off of the simulation pulley gizmo; how many people did it take to lift the armchair with a fixed pulley? (Look at Activity A question 2)



Question 5 options:

1


3


4


5

Answers

Answer:

IN WHICH GRADE YOU ARE????

Helena uses the same force to move an object that has a mass of 12 kg and an object that has a mass of 5 kg. She predicts the 12 kg object will have a greater change in motion. Is she correct?

No, the object with the smaller mass will have a greater change in motion.
No, both of the objects will have an equal change in motion.
Yes, the object with the larger mass will have a greater change in motion.
No, neither object will have a change in motion.

Answers

Answer:

No, the object with the smaller mass will have a greater change in motion.

Explanation:

Hope this helps!

Please help!!! Hydrogen and oxygen undergo a chemical reaction to form water. How much water will be created if hydrogen has a mass of 3.56 g and the oxygen has a mass of 25.32 g?

Actual answers only please :)

Answers

Answer:

22.88g

Explanation Hope this helped <3

help pls due todayyyy

Answers

Answer: Below

Explanation:

Steal wool + oxygen (fire): The steel wool is a grayish color and has a rough surface. Oxygen is transparent  It looks like a powder, and like if it was rusted steel wool but then broken apart and turned into a powder  Well Iron oxide is 7 grams and steel wool combined is 7 grams so you can say that the mass was conserved  Yes, this is a chemical change because the steel wool rusted and rust is a chemical change, so iron oxide is cause because if a physical change.

Egg + Heat : The egg has a yellow yolk in the middle while there is some type of liquid at the border of the yolk, but it is clear, the heat is hot but transparent  The egg turned into a delicious food called an omelet what was yolk staid as a liquid but got a tad harder, but the transparent border around it turned white  It was conserved because the eggshell was 4 grams and the fried egg is 41 grams  It is a chemical change because it results in the formation of new particles, and the chemical bonds break up and new ones are formed.

Water + Heat The water is a clear liquid, while the heat is very hot but transparent  The water turned into a type of oxygen -Water Vapor-   If 5 g of water becomes a gas it becomes 5 g of water vapor. The mass of the liquid water is simply transferred into the mass of the newly formed water vapor.  There was no chemical reaction because the water vapor can be turned back to water also it just changed from a liquid to a gas and did not change its composition  

Zinc + Hydrogen Chloride  Zinc: a white/silver metallic solid. Hydrogen chloride (dilute hydroelectric acid) a transparent, colorless liquid with a very low pH (acidic). Zinc "dissolved" in hydrogen chloride, while emitting a colorless gas.  The liquid remains a colorless liquid, possibly still having a low pH from the unused acid. The colorless gas collected in a test tube gives a popping sound when ignited with a burning wooden splint, so it is not air embedded in the zinc, nor dissolved in hydroelectric acid.  Well although the zinc chloride is 12 grams and not 15 the gas that was released was 3 grams and as we all know 3 + 12 is 15 so you could say that the mass was conserved The production of a new substance (most probably hydrogen) from the reaction of the two reactants. When a few drops of the liquid product are evaporated on a watch glass, a white residue is left.

When a few drops of the liquid hydroelectric acid are evaporated on a watch glass, there is no residue. This proves that a new product (hydrogen gas), (white powder, zinc chloride) is produced instead of zinc being physically dissolved in hydroelectric acid.

Sodium Hydroxide + Copper Sulfate Sodium hydroxide is a turbid solution and copper sulfate is in form of bright blue crystals. When their solutions are mixed with each other, a pale blue precipitate of basic copper hydroxide & a solution of neutral salt sodium sulfate will be formed. The sodium hydroxide and the copper sulfate combined make a total of 67 grams and the product  is split because the sodium sulfate is 47 grams and the copper hydroxide is 20 grams but all together it is still 67 grams so you could say that the mass was conserved The proof of the reaction is the appearance of pale blue precipitates of basic copper hydroxide & a solution of neutral salt sodium sulfate.

I need help with this please

Answers

Answer: C, the number of atoms stay the same

Explanation:

The number of atoms remains the same before and after the reaction. This is because of the Law of Conservation of Mass, which states that matter cannot be created or destroyed in a chemical reaction. In the case of methane burning, one molecule of methane (CH4) reacts with two molecules of oxygen (O2) to produce one molecule of carbon dioxide (CO2) and two molecules of water (H2O). The total number of atoms on both sides of the equation is conserved.

What causes the seasonal changes viewed in the night sky?

Answers

Answer:

If you look at the night sky different

times of the year you see different

constellation.This change due to the

motion of the earth in it's orbit around

the sun.The shift of the sky is really

the motion of the earth around the sun.

Explanation:

Hope it helps

Explanation:

the factors which bring about the chemical reaction

with the development of technology why is muscle atrophy occurring more often what can you do to stop it THIS IS A SCIENCE QUESTION

Answers

Answer: Technology is causing people to sit around more while using it. Therefore people are not exercising as much. This causes the strength of muscles to go away. A way to help stop this is to get exercise for at least one hour a day.

Explanation:

You push on an object with an applied force. What is the "reaction" force to your push?
1. the object moving forward
2. the object being pulled by Earth
3. the object pushing back on you
4. the object being lifted up

Answers

Answer:

1. The object is moving forward.

Explanation:

the object would be moving foward

What type of force is known for exerting an upward force on objects in a fluid?
1. buoyant force
2. friction force
3. gravitational force
4. magnetic force
The First person to answer will get the brainliest!!!!!!

Answers

Answer:

The answer is 1, Buoyant force.

Explanation:

I agree with the other comment, the answer is 1 buoyant force

A food scientist is determined to create a mango that looks exactly like a mango but tastes like salmon. Can this be achieved through artificial selection? Why or why not?

Answers

No because an artificially ripened mango will have a mixture of light and dark yellow colour on it. This indicates that the mango is not completely ripened. The artificially ripened mangoes will seem ripened on the outside but not on the inside.
Other Questions
State the morden nationalism in Europe?? How did changes in patronage help bring about the popularity of comic opera in the Classical era? The diagram below represents a plant cell in tap water as seen with a compound light microscope.Which diagram best represents the appearance of the cell after it has been placed in a 15% solution for twominutes?SOS(1)(2)(3)(4) Last week, the price of oranges at the farmers market was $1.75 per pound. This week, the price has decreased by 15%. What is the price oforanges this week? In the article, "Growing Up: Key Moments," which word means "lacking interest orexcitement"?mundane (paragraph 1)trivial (paragraph 2)valuable (paragraph 6)elective (paragraph 9) 16. Ultimately social class determines how people think about social class. When asked why are people poor, Dr. Loewen found that most poople believe poverty lo be:O a. the fault of the schoolsO b. the fault of industriesO c. the fault of poor peopleO d. the fault of the structuralists in society Passive transport move molecules without Write the second sentence so that it has the same meaning to the first one, using the words given.1. I didn't go to school because I was sick. (so)=> I was sick, 2. Hoa and Tim are both 13 years old. (the sameas)=> Tim is 3. Her book is not the same as mine. (different from).=> Her book is 4. I started playing soccer 5 years ago.=> I have 5. The painting is bigger than the photograph. (not asas)=> The photo Write a multiplication equation to represent this decimal model. Find mJLKJLK. if 9 joules of energy are expended pushing on one coulomb of charge round a circuit, what is the emf across the circuit? is Egypt a developing or developed country and why? A quadratic. equation will always have an irrational solution since there is a square root in the quadratic formula. True or False? Description of a turn for those who have never done math / for a child DOES ANYONE KNOW PLEASE HELP ME I WILL MARK BRAINLIEST Solve for W if:4w^2+9w=-2 Solve for percent error: At a school production, the drama club advisorpredicted that there would be 200 people on the first night. Find thepercent error if 250 people attend. Oxygen is produced by the reaction of sodium peroxide, Na2O2 , and water.2 Na2O2 (s) + 2 H2O(l) ---> O2(g) + 4 NaOH(aq)Calculate the mass of Na2O2 in grams needed to form 5.20 g of oxygen. with beethoven as a victim, what is the name of the superstition that a composer will die after finishing a certain symphony? curse of the fourth President Lincoln stated the following in part of his famous Emancipation Proclamation speech."Now therefore, I, Abraham Lincoln, by virtue of the power invested in me as Commander-in-Chief...order and designate as the States and parts of the States, wherein the people thereof respectively, of this day in rebellion against the United States, the following, to wit: Arkansas, Texas, Louisiana, Mississippi, Alabama, Florida, Georgia, South Carolina, North Carolina, and Virginia and which excepted parts, are for the present, left precisely as if this proclamation were not issued. And by virtue of the power, and the purpose aforesaid, I do order and declare that all persons held as slaves within said States and parts of States, are, and henceforward shall be free and that the Executive government of the United States, including the military and naval authorities, thereof, will recognize and maintain the freedom of said persons."What group of slaves were freed because of this proclamation?all slaves in the Unionall slaves in the Americasall slaves in the Confederacyall slaves in the United States