When a ball is rolling down a hill, what forces are acting on the ball? Why does it speed up?
Include friction and gravity in your answer.

Answers

Answer 1

Answer:gravity

Explanation:

Answer 2

Answer:

the gravity speed up because the friction didn't speed up


Related Questions

Which two is it brainliest and 100points:)

Answers

Answer:

b c

Explanation:

Answer:C

Explanation:

awnser this they had no subject so i pick that for science for brainliest awnser

Answers

Answer:

B

Explanation:

what is the total number of electrons found in the valence shell of noble gas in the ground state?

Answers

Answer:

eight

Because the noble gases are the least reactive of all elements, their eight valence electrons are used as the standard for nonreactivity and to explain how other elements interact.

Explanation:

Most solid solutes will dissolve ___ at ___ temperatures

A. slower, higher
B. faster, higher
C. faster, lower​

Answers

Answer:

B

Explanation:

The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.

What classification should this reaction have? CaC12 + F2 = CaF2 + CI2

Answers

Answer:

Single-Replacement Reaction

General Formulas and Concepts:

Types of Reactions

Synthesis Reactions: A + B → AB Decomposition Reactions: AB → A + B Single-Replacement Reactions: A + BC → AB + C Double-Replacement Reactions: AB + CD → AD + BC

Explanation:

Step 1: Define reaction

CaCl₂ + F₂ → CaF₂ + Cl₂

Step 2: Identify backplate

Single-Replacement Reactions: A + BC → AB + C

BC = CaCl₂

A = F₂

AB = CaF₂

C = Cl₂

is this anwser correct

Answers

Yes it is correct I think not for sure

Answer:

Yes. It is definitely correct

Indicate the answer choice that best completes the statement or answers the question.
The crust and upper mantle make up Earth's
O a. lithosphere Ob. asthenosphere
O d. continents
Oc. core
Question 2
Question 3
Question 4
Question 5
Question 6
Question 7
Question 8
Question 9
Question 10
Question 11
Question 12
Question 13
Question 14
Question 15
Question 16
Question 17
Question 18
Question 19
Question 20
LO

Answers

Answer: lithosphere

Explanation:

continents are a part of lithosphere.

core is a structure of earth

Please answer 7-9 i am using alot of my points for this

Answers

Answer:

7... simalair: made of more than 2 things    DIffernt: elemants are made of atoms.

Explanation:

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation:
( )O2->( )O3
1 1
2 2
3 3
Its one of the numbers for each blank space inside the parenthesis​

Answers

Answer: (1)CaSO4 -> (2)O2 + (1)CaS

Explanation: edge 2020 chem

1. Raw egg to boiled egg.
2. Batter to idli.
3. Wet clothes to dry clothes.
4. Woollen yarn to knitted
sweater.
5. Grain to its flour.
6. Cold water to hot water.
7. Straight string to a coiled string.
8. Bud to flower.
9. Milk to Cheese.
10. Cowdung to biogas.
II. Ice cream to melted ice-cream.
12. Stretched rubber band to
its normal size.
13. Souring of milk.
14. Ripening of a mango.
15. Dissolving sugar in water.

these are reversible or Irreversible, chemical or physical, Natural or manmade, periodic or non periodic,desirable or undesirable?​

Answers

Answer:

1.Irreversible

2.Physical

3.

answer correctly for a brainleist! :)

Answers

Answer:

summer

Explanation:

Why because the earth is around the sun the

Carbon dioxide consists of a central carbon atom with an oxygen atom on each side. Draw a model of the molecule formed by putting lines between the atoms to represent bonds so that each atom has the correct number of bonds.

Answers

Explanation:

Structure of Carbon dioxide is in the attachment.

Here,

Hybridization of Carbon is sp

Bond angle 180°

Structure = linear

Single bond consists of sigma bond. Double bond consists of one sigma and one pie bonds. Triple bond consists of one sigma and two pie bonds.

Answer:

O=C=O

Explanation:

this is all you need

what is the substance of air

Answers

Answer:

The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.

Explanation:

:))

What is a limiting reagent? A.) The reactant that is used up first in a reaction B.) The reactant that is used the least reactive in a reaction C.) the reactant with the smallest coefficient in the equation D.) the reactant with the largest coefficient in the equation

Answers

Answer: A.) The reactant that is used up first in a reaction

The reactant that is totally consumed during a reaction, or the limiting reagent, decides when the process comes to an end. A limiting reagent is the reactant that is used up first in a reaction. Therefore, option A is correct.

What is a limiting reagent?

A reactant that is completely consumed at the end of a chemical reaction is known as the limiting reagent. Since the reaction cannot proceed without this reagent, the amount of product that can be produced is constrained.

The limiting reactant is the one that is consumed first and sets a limit on the quantity of product(s) that can be produced. Calculate how many moles of each reactant are present and contrast this ratio with the mole ratio of the reactants in the balanced chemical equation to get the limiting reactant.

The terms limiting reagent and limiting agent may also be used to describe the limiting reactant.

Thus, option A is correct.

To learn more about limiting reagent, follow the link;

https://brainly.com/question/11848702

#SPJ2

Which of the following contains the most atoms?
24.305 g Mg
39.098 gk
21.62 g B
9.0122 g Be

Answers

Explanation:

9.0122 g be Maybe, sorry i don't think so

In the above , the sample of B 21.62 g of boron contains the most atoms because it has approximately 2 moles, while the other samples have only 1 mole each.

What is atoms

The molar mass of each element can be found on the periodic table.

The molar mass of Mg (magnesium) is about 24.305 g/mol.The molar mass of K (potassium) is about 39.098 g/mol.The molar mass of B (boron) is approximately 10.81 g/mol.The molar mass of Be (beryllium) is about  9.0122 g/mol.

To calculate the number of moles in each sample, we divide the mass of each sample by its respective molar mass:

For Mg: Number of moles = 24.305 g / 24.305 g/mol = 1 moleFor K: Number of moles = 39.098 g / 39.098 g/mol = 1 moleFor B: Number of moles = 21.62 g / 10.81 g/mol ≈ 2 molesFor Be: Number of moles = 9.0122 g / 9.0122 g/mol = 1 mole

Therefore, the sample with 21.62 g of boron (B) contains the most atom

Read more about  atoms here:

https://brainly.com/question/17545314

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Name the change of state when a liquid becomes a gas

Answers

Answer: Evaporation

Explanation: the process of turning from liquid into vapor

which reaction is faster?why?

Answers

Answer:no answer

Explanation:

Temperature. Usually reactions speed up with increasing temperature. Physical state of reactants. Powders react faster than blocks - greater surface area and since the reaction occurs at the surface we get a faster rate.

Any 1 know These Chemicals??

Answers

Answer:

A) 1 & 2 only

Explanation:

Seeing that the chemicals present are in question one I take it you are asking about that question.

Decreasing the concentration causes a decrease in reaction process and also the total amount of product you would get out of the given reaction

Decreasing the temperature causes the molecules in this reaction to become less excited or reactive, thus causing the reaction to slow down

The concept of continental drift was developed by Alfred Wegener. Which of the following pieces of evidence does NOT support Wegener's hypothesis?
Group of answer choices

Fossils of the same organisms are found on different continents.

Similar glacial sediments are found in different parts of the world.

The shapes of the continents fit together like pieces of a jigsaw puzzle

Climates at different latitudes are similar to one another.

Answers

Answer:

Climates at different latitudes are similar to one another.

Explanation:

The choice that is not a proof of Wegener's concept of concept of continental drift is that climates at different latitudes ae similar to one another.

Wegener did not use climatic evidence to proof continental drift. He did use fossils found on different continents such as the mesosaurus to propose the theory of continental drift. Wegener also used evidence of glacial sediments to justify his claims. He also fitted the earth into a giant puzzle.

Answer:

Climates at different latitudes are similar to one another.

Santiago's car has an overall average speed of 25 cm/s. If he could increase his car's overall average speed by 10%, what would his car's new overall average speed be?

Answers

Given:

The overall average speed = 25 cm/s.

The overall average speed increased by 10%.

To find:

The new overall average speed.

Solution:

We have,

Overall average speed = 25 cm/s.

The overall average speed increased by 10%. So, the new average speed is

New overall average speed = Initial average speed + 10% of initial  overall average speed

[tex]\text{New overall average speed}=25+\dfrac{10}{100}\times 25[/tex]

[tex]\text{New overall average speed}=25+2.5[/tex]

[tex]\text{New overall average speed}=27.5[/tex]

Therefore, the new overall average speed is 27.5 cm/s.

Acid rain is an example of _____________ weathering

Answers

Answer:

a chemiacal

Explanation:

which of the following is NOT a substance?

A. sodium
B. water
C. alcohol
D. air
E. table salt

can select more than one if needed​

Answers

I believe the answer is d Air

Answer:

c. alcohol

it has no substance

plzzz!!! Write the equation for rusting urgently needed​

Answers

Answer:

[tex]Fe_{2} O_{3}[/tex]

Explanation:

how many moles of carbon are in 3.0 moles of c6h12o6

Answers

Answer:

i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.

11/9/2020
Describe the types of possible
weathering that has occurred to
this boulder
Use vocab words to describe what
is happening

Answers

Rainy bc of erosion

What holds the two parts of a metal together?
S
E
A​

Answers

Answer: The metal is held together by the strong forces of attraction between the positive nuclei and the delocalized electrons (The Electron Sea Model.

Explanation: I hope that helped!

The metal is held together by the strong forces of attraction between the positive nuclei and the delocalized electrons (Figure 1). Figure 1: Metallic Bonding: The Electron Sea Model: Positive atomic nuclei (orange circles) surrounded by a sea of delocalized electrons (yellow circles).

Quinton answer me or I will never talk to u again pls

Answers

Answer:

huh

Explanation:

What happens if you overmix muffins?

Answers

Answer: When you overmix the muffin batter, it crushes the air bubbles and ruins the fluffy texture.

Explanation: → Follow this tip: To ensure a batch of light, fluffy muffins, mix the dry ingredients with the wet ingredients until just barely combined, and no more dry flour is visible.

The batter is going to be tasting bad and gross

Which of the following is a chemical property?
A:
mass
B:
oxidizes in air
C:
boiling point
D:
solubility

Answers

The answer is B.oxidizes in air

Is it OK for people to post fake vacation pics and other fake info on social media? Why or why not? Use facts and details from the Article to back up your answer.

Answers

Answer:

No, It is not okay to pretend on social media.

Explanation:

No, it is not okay for people to post fake vacation pics and other fake info on social media. This is very wrong, as -

This 'all time look good, feel good, have a happening life' approach of social media - implies showing only the positive side & not negative side of people's life. However, in real life is not a bed of roses. Faking things out implies that pretending to be cool has become more important than sharing deep meaningful relationships, & highlights  superficial desire of false popularity. It is also harmful to people being communicated this fake image, as they might indulge into any social involvement, on the basis of unreal image of the concerned person.

Answer:

it is not ok because there are other people that will look at those pictures and say aww i wish i were them but we all need to exept who we are

hope this helped

mark me brainliest please

Explanation:

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