Why will a toy train remain still if you push on the engine with
A force of 3 N and your friend push on the caboose with a
Force of 3 N?

Answers

Answer 1

Explanation:

Because when two equal forces are applied from opposite directions, they "eliminate" each other.

The train would go right if a 3N force was only applied in the right direction, and it would go left if the same force was only applied to the left.

If a 3N force was applied to the right and a 2N force to the left, it would equal a 1N force to the right (3-2=1).

But there it's 3-3=0, so in practice the force is 0N. Therefore the train won't move.


Related Questions

Block A has a mass of 5g and a volume of 15mL. What is the density of block A? Will it float in water (density of water is 1.0 g/mL) Don't forget the units!! PLSSSS PLSSS PLSSS HELP I WILL MARK BRAINLIEST AND HELP WITH UR QUESTIONS I PROMISE!!!!

Answers

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass of block = 5 g

volume = 15 mL

The density of the block is

[tex]density = \frac{5}{15} = \frac{1}{3} \\ = 0.33333333...[/tex]

We have the final answer as

0.33 g/mL

The block will float on water since it's density is less than that of water which is 1 g/mL

Hope this helps you

hello :) for qn 3 , I got 0.01 mol but I’m not sure if it’s correct :/ I need help , thanks!

Answers

Answer:

0.05 dm³

Explanation:

Please see the attached picture for full solution.

The question is asking for the volume of H₂SO₄, so we need to find the number of moles of KOH then the number of moles of H₂SO₄. (Using mole ratio from the balanced equation) Also, potassium hydroxide is KOH not K₂SO₄ :)

Convert 35 mL to cm3. 1 mL = 1 cm3

Answers

it’s still 35cm3
mark me brainliest

matter graphic organizer

Answers

Wym there is no way of finding out the answer

Coyotes and oak trees are unicellular organisms?

Answers

Answer :

Multicellular organisms

Explanation :

Coyotes are multicellular organisms.

Trees are multicellular organisms. They are made up of eukaryotic cells, which are complex cells full of organelles.

Coyotes and oak trees are not unicellular organisms but are multicellular organisms.

Unicellular organisms are living organisms that consist of only one cell. These organisms are complete and functional in their single-cell structure, carrying out all essential life processes, such as respiration, nutrition, reproduction, and growth, within that one cell. Examples of unicellular organisms include bacteria, archaea, protozoa, certain algae, and some fungi.

Coyotes and oak trees are multicellular organisms made up of many cells. Coyotes are mammals, and oak trees are plants, both of which are complex organisms with specialized tissues and organs. In contrast, unicellular organisms, such as bacteria and protists, carry out all life processes within a single cell.

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two ways
2 Describe two ways in which sodium chloride is different from chlorine. (for 7th graders)

Answers

Salt be pool cleaner, end of story

what is The chemistry of living things and living systems created a new
combined field in science

Answers

Answer:

The answer is biochemistry

Explanation:

Biochemistry is a field of science that studies the chemistry and chemical processes involved in a living system. These chemical processes include glycolysis, gluconeogenesis, citric acid cycle, pentose phosphate pathway among others. Biochemistry studies the relatedness of these processes, the importance of these processes and how these processes can or cannot be regulated.

ii What is the state of matter just before a substance melts?

Answers

Explanation:

Before melting,Substance are in Solid state.

Which graph best shows an inverse relationship?

Answers

Answer:

b

Explanation:

just got done with this one

It’s b!!!!!!!!!!!!!!!!

The density of aluminum is 2.70 g/cm'. If the volume of a piece of aluminum is 90.4 cm', what is
the mass of the aluminum?

Answers

Answer:

33.4814814815

Explanation:

90.4/2.70

How many significant figures are in 320001

Answers

there are 6. looked it up

What is a carcinogen? a. a toxin linked to an increased risk of cancer b. a non-carbon based chemical c. a type of pollution that can be traced to a specific source d. a type of pollution that cannot be traced to a specific source

Answers

Answer:

Explanation:

a i think

Answer:

it would (a)

Explanation:

carcinogen is a substance that gives your tissues a higher chance of getting cancer

Which of the following are fluids

Answers

all it says is which of the following are fluids
What are the options

3. The water in a beaker has a mass of 200 g. An electric current is
tumed on in the water for two hours. Afterward the water has a
mass of only 176 g. What happened to the missing mass?

Answers

Answer:

Through electrolysis, some of the water became hydrogen gas and oxygen gas

Explanation:

I just took a test on this online.

The passage of current through water results in the formation of hydrogen gas and oxygen gas. This both will evolves out and the remaining water will have lessor mass than the initial.

What is electrolysis?

Electrolysis is the process of conversion of electrical energy to chemical energy by applying an  electric field. Electrolysis involves an electrolyte which can conduct by furnishing ions.

Generally electroanalytical cells involves  two metallic electrodes which are immersed in a molten electrolyte containing the same metal ions.

When an electric  current is passed through water, it will undergo electrolysis and produce hydrogen and oxygen in gaseous state. These gases bubbles out from the water and therefore, there occurs a mass loss for water.

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• An element is shiny, brittle, and a poor conductor of electricity.
Which of the following is the best classification for the element?

Answers

I don’t see the complete question

An ionic bond for calcium and oxygen is CaO. If an oxygen ion has a charge of two negative, what is the charge for calcium? +2 –1 +1 –2

Answers

Answer:

+2

Explanation:

A hair gel is a mixture. Which of the following is true about hair gel?
A. A chemical change is required to separate its mixed components
B. A physical change can separate its mixed components.
C. It is made up of millions of units of a single type of compound.
D. It is made up of millions of atoms of a single element

Answers

Answer:

B. A physical change can separate its mixed components.

Explanation:

Atoms and molecules of different elements can come together to form a substance known as MIXTURE. A mixture comprises of several units of different elements or compounds that are not chemically joined together. This is the case of hair gel, which is a mixture i.e. it contains several compounds mixed together in an uneven ratio.

Since the components of a mixture such as the hair gel, are not joined together chemically i.e no chemical bonding or altering of chemical structure occurs between the mixture constituents, they can be separated using physical means. Physical methods of separation such as boiling, chromatography, etc.

You have decided that you want to make ice cubes. You put them in the freezer and they become solid at 32°F. What
temperature will the ice cubes melt?
32°F
100°F
OF
It's impossible to tell.

Answers

lago claro todo esta lleno de basura

Answer:

I think its about the same tempurature so i would say 32 degrees

Explanation:

Notice that the curve shows periods where the temperature does not change. These plateaus occur because energy is being used to changing the substance's phase, not raise the temperature. This is why water will not get hotter as it is boiling.

A length of wood has a labeled length value of 2.50 meters. You measure its length three times. Each time you get the same value: 2.35 meters. What is the percent error of your measurements? *

Answers

Answer:

6%

Explanation:

Actual length of the wood is 2.5 m

Observed length of the wood is 2.35 m

We need to find the percent error of your measurements. The formula of the percentage error is given by :

[tex]\%=\dfrac{|\text{observed-actual}|}{\text{actual}}\times 100\\\\\%=\dfrac{2.5-2.35}{2.5}\times 100\\\\\%=6\%[/tex]

Hence, the percentage error is 6%.

What is the charge of a chromium ion that has lost 4 electrons?

Answers

Answer:

Explanation:

When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons. In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons)

and plzs do not hate

The charge of chromium after losing 4 electrons is +2.

What is the ionic charge?

Ions are two or more charged particles that make up ionic compounds. Electrostatic attraction keeps the ions together (in the solid phase) despite their opposing charges. Cations are positively charged ions, whereas anions are negatively charged ions. Many factors make ionic molecules significant.

They act as electrolytes for batteries and conduct electricity when dissolved in water. They could form a strong bond with other charged particles, such as those found in environmental samples or the human body. They find use in fireworks, flares, and lights because they are frequently multicolored when burned. The list is endless!

Studying the nomenclature used to give ionic compounds distinctive names is a good method to become familiar with and exposed to them. You will learn how to properly explain the identification of substances in language by converting from a chemical formula to a name—a highly essential problem as the diversity and complexity of known compounds keeps growing!

Therefore, the charge on chromium after losing 4 electrons is +2.

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Please help! If a forensic chemist discovers evidence through examination which would prove a person guilty of a crime, why then might this person not be convicted?

Answers

Explanation: You cannot be convicted of a crime without evidence. You cannot be convicted of a state crime. You cannot be convicted of a federal crime. If there is no evidence against you, under the law, it simply is not possible for the prosecutor's office to obtain a conviction at trial. So, when you do have evidence it is really impossible to not get convicted unless the judge truly believes your side of the story and declares you not guilty.

I hope this helped :) If not i'm sorry!

What is the protons role in the atom?

Answers

The protons inside an atoms nucleus help bind the nucleus together. They also attract the negatively charged electons

yes correct answer......

same answer by me .....

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If Thomson was asked about Dalton's Atomic Theory, what would he say? (2+ sentences)

Answers

"Through my own experiments, I have discovered the existence of a previously unknown subparticle-the electron. Because of this, Dalton's conclusion that atoms are indivisible particles is incorrect."

If the weather map above is from today’s forecast, which city is most likely to see its temperatures rise tomorrow?

Chicago

Houston

Denver

Memphis

Answers

Answer:

The awnser is chicahgo

Explanation:

A cylinder with 10 mL of coconut oil has a mass of 9.3 g. What is the density of the oil? Round to the nearest hundredth. ​

Answers

Answer:

0.93 grams per milliliter

Explanation:

Density is the division of mass by volume. It is how "hefty" an object is; for example, wood isn't very "hefty" but metal is. The density is measured in mass over volume, so it is 9.3/10. After applying units, it is 0.93 grams per milliliter.

what is hydrophytes? ​

Answers

Aquatic plants are plants that have adapted to living in aquatic environments. They are also referred to as hydrophytes or macrophytes to distinguish them from algae and other microphytes.

Suppose 10 atoms of carbon (C) react with 20 atoms of oxygen (O). According to the Law of Conservation of Matter, how many atoms will there be in the product of this reaction?(1 point)
A) 20

B) 15

C) 10

D) 30

Answers

Answer:

D 30

Explanation:

whenever there is a reaction, the amount of atoms don't change, because matter can't be created or destroyed. Add the carbon and oxygen atoms together

According to the Law of Conservation of Matter, there will be 30 atoms of product in the reaction.

LAW OF CONSERVATION OF MATTER:

The law of conservation of matter states that matter can neither be created nor produced in a chemical reaction.

This further means that the amount of matter in the reactant of a reaction must equate that of the products.

Hence, if 10 atoms of carbon (C) react with 20 atoms of oxygen (O), there will be 10 + 20 = 30 atoms of product in this reaction.

Therefore, According to the Law of Conservation of Matter, there will be 30 atoms of product in the reaction.

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Plsss helpppp pls fast :(

Answers

Answer:

valance electrons are located in the outermost shell/ outermost energy levels. it determines how they will react their reactivity.

Which component of air is given off when silicon dioxide is passed through air during the industrial preparation of air

Answers

Answer:

Answer the following questions: What is the composition of air? Answer: Air is composed of nitrogen, oxygen, carbon dioxide, many other gases, water vapour and dust particles. Which gas in the atmosphere is essential for respiration?

Explanation:

Answer:

poop

Explanation:

cus poop

T or F: All electrons are alike

Answers

Answer:

True

Explanation:

Every electron in the universe has exactly the same mass, and exactly the same charge.

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