2. If a person in a wheelchair wanted to get to the second story of a two-story building, would it be easier to
take a short, steep ramp or a long, shallow ramp? Explain.

Answers

Answer 1

Answer:

The short steep ramp would be much harder because you will have to work more against gravity.

Explanation:

Answer 2

The long shallow ramp would be easier to take than the short, steep ramp because the person would have to use more force on the short, steep ramp to push the wheelchair against the force of gravity.

What is an inclined plane?

An inclined plane or a ramp can be defined as a flat supporting surface tilted at an angle, with one end higher than the other, utilized as an aid for raising or lowering a load.

The inclined plane can be defined as one of the six classical simple machines developed by Renaissance scientists. Inclined planes can be utilized to move heavy loads over vertical obstacles.

Moving a body up an inclined plane needs less force than lifting it straight up, at a cost of an increase in the distance moved. The mechanical advantage, the factor by which the force is decreased, is equal to the ratio of the sloped surface's length to the height it spans.

The inclined plane provides the same amount of work to be done with a smaller force exerted over a greater distance. The angle of friction or the angle of repose can be defined as the maximum angle at which a load can rest motionless on an inclined plane because of the friction without sliding down.

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Related Questions

A rectangle has a width of 7 inches height of 14 inches and a length of 12 inches find it’s volume 

Answers

the answer would be 1,176. you solve by using (L*H*W)

(this is 6th grade science so that’s the closet subject I could find) Do you know an adult who drinks coffee, tea, or soda pop? Think about that person and picture them in your mind. Write a description to help that person understand how they can smell their favorite beverage even though it’s a liquid.

Answers

Answer:

Well you could boil the liquid, That would make steam from the liquid. Noramlly you can smell steam.

Explanation:

what are the different kind of nitrogen bases

Answers

Answer:

Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, the thymine is replaced by uracil (U).

Explanation:

yea

1. Which family of elements is most likely to lose electrons?
2. Which family of elements is most likely to gain electrons?

Answers

Answer:

Elements that are metals tend to lose electrons and become positively charged ions called cations.

Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions.

Hope it helps:)

Metal are the  family of elements which is most likely to lose electrons. Non metals are the  family of elements which is most likely to gain electrons.

What is element?

The quantity of protons an element has defines it. An element's atoms all contain the same amount of protons, but its electron and neutron counts might vary. Ions are produced by altering the electron to proton ratio, whereas isotopes are produced by altering the neutron count.

118 known elements are present. A study is being done to create element 120.1. The periodic table will have to be modified to include element 120 after it has been created and validated. Metal are the  family of elements which is most likely to lose electrons.

Therefore,  metal are the  family of elements which is most likely to lose electrons.

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What is a Physical reaction?

Answers

a reaction to something physical

Which of the following is an example of an element? a brass b oxygen c rust d water

Answers

Answer:

A) Oxygen

Explanation:

An element is defined as something made of only 1 type of atom. Brass and rust are made up of many types of atoms, and water has two types of atoms, hydrogen and oxygen. Oxygen is made up of two oxygen atoms, which are the same element. So, by definition, oxygen is an element.

Answer:A

Explanation:

CaCO3
How many atoms of oxygen are in one
molecule of calcium carbonate?
A 1
B3
C5
D6

Answers

Answer:

B. three atoms of oxygen

which is a limitation of a scientific model?

Answers

Answer:

A limitation of models in science is that they are usually simplified versions of the real situation or concept.sometimes, models spark debates leading to new and improved models.A model may be used when it is impossible to create the conditions necessary to test a concept of theory.

hope it is helpful...

Which is a characteristic of nuclear fission? releases nonradioactive waste only involves the collision of two nuclei releases small amounts of energy compared to fossil fuels involves the splitting of an atom into two or more fragments

Answers

Answer:

involves the splitting of an atom into two or more fragments

Explanation:

The characteristic of nuclear fission is that it involves the splitting of an atom into two or more fragments. Details about nuclear fission can be found below.

What is nuclear fission?

Nuclear fission in radioactivity is a process by which the nucleus of a large atom splits into two or more smaller atoms.

Nuclear fission is usually accompanied by the release of a radioactive particle.

This suggests that the characteristic of nuclear fission is that it involves the splitting of an atom into two or more fragments.

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Is carbon dioxide a polar molecule? Why or Why Not?

Answers

Explanation:

Carbon dioxide isn't a polar molecule because

same nature of charge appears in opposite direction which cancel each other. So, carbon dioxide is non-polar molecule.

Alien Periodic Table

Answers

Answer:

IT IS REAL

Look it up

Answer:

look close the answers are circled in blue

the answer to number 2 is element #14, Yorkel

PLEASE HELP 30 POINTS
Because the rock is irregularly shaped, you used the displacement method to measure its volume.
You used (______) to indirectly find the (_____) of the objects.

Options for the 1st fill in the blank:
- a balance
- calculations
- a graduated cylinder
Options for the 2nd fill in the blank:
- density
- mass
- area

Answers

Answer:

balance for the 1st and mass for the 2nd

How was Bohr’s atomic model different from rutherfords atomic model

A. Bohr’s model accounted for electrons that have different charges

B. Bohr’s model could explain the structure of the nucleus

C. Bohr’s model showed that electron orbits had distinct radii

D. Bohr’s model could explain the wave nature of electrons

E. Bohr’s model proved that atoms are unstable in the nature

Answers

Answer:

C. Bohr’s model showed that electron orbits had distinct radii

Explanation:

In Rutherford's atomic model, the electrons moved on arbitrary orbits, which was only due to the condition that the Coulomb force acts as a radial force. In Bohr's atomic model, only very specific orbits were allowed, which were determined by Bor's quantum condition.

Answer:

C i agree

Explanation:

I need help with these two questions

Answers

halogens have 7

allali have 2

noble gases have 8

K = 1

P = -3

Ra= 7

Cl = -1

N = 5

O = 6

A scientist is studying the liquid shown here. She thinks the liquid is a mixture. Describe an investigation she could do to demonstrate that the liquid is in fact a combination of substances.

( please help it’s due today lol! i will mark your answer as brainliest or whatever .)

Answers

Answer: Measure the density

Explanation: pretty sure the density could identify if it is a mixture or a pure substance

Which statement about sound waves is true?
They can be reflected.
Air travels with them
They travel throughoven
They exist only if heard

Answers

Answer:

Explanation:

They can be reflex lol

What element have 5 energy levels of electrons. Which as an atom the last electron is found in the 5p^3

Answers

Answer:

I hope this answer is correct

Explanation:

Element having electronic configuration 1s

2

,2s

2

,2p

6

,3s

2

,3p

6

,3d

10

,4s

2

,4p

6

,4d

10

,5s

2

,5p

3

Which timeline best shows the history of the development of cell theory? 1665 1838 Schleiden 1855 Hooke VirchowN 1600 1700 1676 1800 1900 1839 Schwann Leeuwenhoek 1665 Hooke 1838 1855 Schleiden Virchow 1700 1800 1900 1676 Leeuwenhoek 1830 Schwann 1665 1838 1855 Hooke Leeuwenhoek]Virchow O 1600 1700 1676 1900 1839 Schwann Schleiden 1665 1838 1855 O Virchow Schwann Hooke 1700 1800 1676 1839 1900 Leeuwenhoek Schleiden.

Answers

Answer:

Schleiden, Schwann, and Virchow

Explanation:

A component of the cell theory is that all living things are composed of one or more cells.

A component of the cell theory is that the cell is the basic unit of life.

A component of the cell theory is that all new cells arise from existing cells.

Answer:

B is right edg 2021

Explanation:

What is the stable end product of the decay of uranium 238

Answers

Lead

Explanation:

by emission of alpha particles

The end product of the decay of uranium 238 is Pb-206.

Heavy elements are generally grouped into four decay series which are; Thorium series, Uranium series and actinium series and Neptunium series.

These heavy elements decay via a series of α and β emissions until a stable nucleus is finally achieved. All these decay series usually terminate in a lead nucleus.

Uranium 238 belongs to the uranium decay series and terminates at Pb-206.

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What is the mass of 15 ml of aluminum if the density is 2.70 g/ml?

Answers

Answer:

40.5g

Explanation:

desnity = mass/volume

2.7 = mass/15

mass = 2.7 x 15

mass = 40.5 g

There are several ways to model a compound. One type of model is shown. A central C attached to 3 C's by 1 line each, each of the 3 C's being attached to 3 H's by a 1 line each. The central C is also attached by 1 line to a C, which is attached to 2 H's and a C by a single line each. The C is attached by 2 lines to an O ad by 1 line to another O. The O with 1 line is attached by 1 line to an H. What is the chemical formula for the molecule modeled? CHO C4H11O2 C6H12O2 C6H9O

Answers

Answer:

C6H12O2

Explanation:

The first step in accurately deducing the structure/formula of the model is to count the number of carbon atoms, hydrogen atoms and oxygen atoms mentioned in the model. This gives the molecular formula of the compound.

Next, you look at there arrangement of atoms and bonds as stated in the model, this tells us the structure of the molecule and confirms the molecular formula initially deduced.

The structure of the compound is shown below.

Answer:

Your answer would be C6H12O2

Explanation: I hope I helped you :)

Help meh, please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

volume of 200mL, density shows it weighs .789 grams for every mL.  .789*200= 157.8 grams

Explanation:

I need help pls help ASAP I'll give brainliest​

Answers

Answer: A

Explanation:

Answer:

The answer is A

Explanation:

Scientists in a lab are working with two different samples of the element mercury. They know that the different samples are different isotopes.

Which property of the isotopes must be different?
a. the atomic number
b. the electric charge
c. the element name
d. the mass number

Answers

b.) the electric charge

Answer:

A Mass number

Explanation:

did it on edge2020

A horse traveled a distance of 20 miles in 2
hours. What was the horse's speed?

Answers

The horses speed was 10 mph

Answer:

The horses speed was 10 miles per hour.

Explanation:

20/2=10

Hope this helps!

Compounds are created when atoms of different elements _____.

1.form chemical bonds
2.have different chemical properties
3.form physical bonds
4.have similar chemical properties

Answers

Answer:

1.form chemical bonds

What effects do mutations have? Check all that apply.

Answers

A mutation in DNA can be dangerous if it is a deletion!! Hope this helps you out!!! Can u please mark me brainliest? Thanks!!! :)

Answer:

A,C,E,F

Explanation:

What makes the atomic radius change along a period in the periodic table?
A. More electrons in the valence shell make the radius bigger.
B. More protons in the nucleus pull the electrons in, making the
atomic radius smaller.
C. The increased atomic mass makes the atomic radius bigger.
D. More electrons pair in orbitals, making the atomic radius smaller.

Answers

Answer:B

Explanation:

For a laboratory investigation some students put a strip of shiny metal into a beaker of blue solution and then stored the beaker on a shelf
overnight. The next morning, the students recorded observations about the metal and the solution in the box below.
Students' Observations
Exhibit
. The solution is lighter in color,
The volume of solution is the same.
• The metal strip is shiny above the surface of the solution
• The metal strip is not shiny below the surface of the solution.
• The metal strip below the surface of the solution has a dark
coat of flaky material
• When the metal strip is touched, the flaky material falls off.
Based on their observations, can the students correctly conclude that a chemical reaction occurred?
A. No, because the metal strip was still visible
B. Yes, because a new material of a different color formed on part of the metal strip
c. No, because the solution stayed blue
ble solution stayed the same
12 AM

Answers

Answer:

It is b

Explanation:

Yes, because a new material of a different color formed on part of the metal strip.

What is a Chemical reaction?When atoms establish or break chemical bonds, chemical processes take place.  Reactants are substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction. Until the reactants are exhausted, some chemical reactions merely proceed in one direction.  It is claimed that these responses are irreversible. Some responses are categorized as reversible. Reactions that are reversible can occur both forward and backward. Reactants change into products in a reversible reaction, but products can also change back into reactants. In actuality, both the forward response and its reverse will occur simultaneously. This oscillation lasts until a particular relative balance between reactants and products is attained a condition known as equilibrium. The forward and backward processes continue to occur at equilibrium, but there is no longer any change in the relative concentrations of products and reactants.

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a single cell undergoes mitosis every five minutes how many cells will result from this cell in 20 minutes

Answers

Answer:

= 16 cells

Explanation:

Mitosis is the stage of cell division in nonsexual cells of eukaryotic organisms (that is, cells that have a nucleus). It takes place in several phases, begins after DNA duplication and ends with the separation of the two daughter cells.

It is a fundamental mechanism that occurs for the first time in the hours following fertilization.

After duplication of the genetic material, during interphase, it condenses and groups to form chromosomes with two genetically identical chromatids: this is the prophase. The nuclear membrane then dislocates, and the centromeres of the chromosomes (the area where the two chromatids of the same chromosome overlap) bind to the microtubules via the kinetochores. Gradually, all the chromosomes are sequestered at the equator of the cell: this is the metaphase.

Then, during anaphase, the chromosomes will split into two chromatids, each of which is pulled towards a pole of the cell. Thus, at each top of the cell, there is a copy of each chromosome. During telophase, the nuclear envelope will begin to reform around the set of chromosomes as the DNA gradually decondensed. The plasma membrane invaginates equatorially under the action of a ring of myosin and actin. Increasingly narrow, the bridge between the cells eventually breaks, and two cells are formed as a result of cytodieresis. Each of them can resume their growth.

Now; having understood what Mitosis is all about.

When a single cell undergoes mitosis every 5 minutes; we have the formation of two daughter cells.

Then in 20 minutes; we will have:

= [tex]2^{20/5}[/tex]

= [tex]2^4[/tex]

= 16 cells

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why is water a neutral substance what kind of rock requires heat and pressure to form?A-sedimentary rockb-igneous rockc-clastic rockd-metamorphic rock What division problem does the model represent? ...1/3 The quotient is... two disadvantages of series connection? what is the correct guide words of wash Which of the following is an example of adiploid cell?ovumneuronsperm is the pull of gravity on an object.O a. MassO b. ElementNO c Weightd. MatterMoving to another question will save this response. What is the quotient of 2 3/4 and 7/8? The Excellent Agency specializes in developing advertising campaigns for smaller retail clients. Excellent is hired by Shadowleaf Shoes, a small regional chain of six shoe stores, to develop a slogan and specific ads to be used in a three-month newspaper campaign. Shadowleafs marketing director, Manuel Margolis, is adamant while meeting with Excellent's account executive, Kia Chin, that the campaign must be catchy and modern to appeal to a target audience that has an active lifestyle and is between the ages of 18 and 35. More importantly, Margolis wants the slogan to be memorable and unique. Kia Chin, representing Excellent, develops a campaign and presents it to Margolis. The campaign is based on the slogan "Do What You Do in a Shadowleaf Shoe." Visuals depict mens legsdifferent sizes, skin colors, etc.walking, jogging, dancing, and otherwise moving in every type of Shadowleafs shoes. Margolis feels that this campaign will target young male consumers, but will also get the attention of others regarding the comfort of the shoes, raising awareness of the Shadowleaf brand. After running the ads, the Excellent Agency wins an advertising effectiveness award. It seems that the surprising and appealing visuals gave the slogan unexpectedly positive social meaning for people of all ages, not just men aged 18 to 35. When Manuel Margolis insists on a measuring stick for the creativity of the campaign, what will the Xcellent Agency tell him, if Kia Chin is smart? A. "The award alone proves that this ad is loaded with creativity." B. "If people like the ad, theyll buy the product." C. "We met the technical standards for this advertising effort." D. "Great brands do more than just get attention, they make emotional connections." A bakery sold a total of 200 cupcakes in a day, and 69% of them were vanilla flavored. How many of the cupcakes sold that day were vanilla flavored? a geographer would most likely use a sonar to do what? french. masculine, feminine, or both. Explain how the Earth's surface can be organized into continents and oceans. Describe this way of organizing the Earth in at least two to three sentences. Read these sentences from Marian Anderson, Famous Concert Singer. "But a few days before she arrived at New York, in a storm on the liner crossing the Atlantic, Marian fell and broke her ankle. She refused to allow this to interfere with her concert, however, nor did she even want people to know about it." The primary purpose of the text above is to 1. demonstrate that Marian Anderson was a proud and courageous woman. 2. inform the reader that Marian Anderson traveled via boat rather than air plane. 3. illustrate Marian Andersons struggle to perform in the United States. 4. prove that Marian Anderson was determined to perform in the United States. How do polar bear adapt to its environment? Your mom still thinks Pluto is a planet, though it was downgraded to a "dwarfplanet" in 2006. Is she spacing out or experiencing: *Anchoring BiasBlind-spot biasConfirmation biasNegativity biasOutcome bias A zero of the function ) is -5 + 3. Which of the following is the other zero of the function? The message on a diamond-shaped sign might be Drag each description to the Supreme Court case it matches.1.) The case upheld breaking up the monopoly controlling railroad lines from Chicago to the Pacific Northwest. 2.) The case found that state limitations on workers' hours violated their freedom to contract.3.) The case dissolved a monopoly of the oil industry that had engaged in abusive business practices. Northern Securities Co. v. United States (1904)Standard Oil Co. v. United States (1911)Lochner v. New York (1905) PLEASE HELP!!! 45 POINTS!!!I know this is hard I'm sorry ;-;