Categories
Assignment Help

You used three methods of analysis to find the acceleration of the cart on the track: a two-point difference from v(t), an average of a(t) that was itself calculated by a succession of first differences of the v(t) data, and a line fit to v(t). some criteria to help you consider which method is best are part a in which type of graph(s) is it easiest to see whether the acceleration was constant?

[ad_1]

Answered by answersmine AT 22/10/2019 – 02:29 AM

The best way to find that you want is the line fit. When acceleration is constant the speed(v) changes smoothly every moment, so the v line must be straight. Differently, the accelaration changes.

[ad_2]

Categories
Assignment Help

What is the potential difference between the plates after a sheet of teflon is inserted between them?

[ad_1]

Capacitance C of a parallel plate capacitor is C=Q/V, where Q is the charge on the plates and V is the potential difference between the plates. The potential of the capacitor is then: V=Q/C.

The capacitance C is given by the equation C=k*ε₀*(A/d) where k is the dielectric constant, ε₀ is the permittivity of free space, A is the surface of the plate and d is the distance between the plates.

For vacuum and air, k=1 so the capacitance is C=ε₀*(A/d).

But when we insert a dielectric between the plates like teflon which has k=2.1 at T=20°C the capacitance becomes:

C₁=k*ε₀*(A/d)=2.1*ε₀*(A/d)=2.1*C. 

We can see that the capacitance increases by k=2.1 which is the dielectric constant of teflon. 

So the voltage V becomes:

V₁=Q/C₁=Q/(2.1*C)=(1/2.1)*(Q/C)=(1/2.1)*V=0.48*V.

V₁=0.48*V.

Potential difference decreases by 0.48 because we inserted teflon between the plates. 

[ad_2]

Categories
Assignment Help

Find the common difference of the sequence shown. 1/6,1/4,1/3 A.1/6 B.1/12 C.1/3

[ad_1]

Find the common difference of the sequence shown. 1/6,1/4,1/3 A.1/6 B.1/12 C.1/3

[ad_2]

Categories
Assignment Help

Which of the following describes a major difference between classical Greece and Persia? A. Greece granted more liberal rights to women and allowed citizens to have more control over the government. B. Classical Greece provided all citizens with political rights, while Persia did not allow for any political rights. C. Classical Greece was organized into independent city-states, while Persia was ruled over by a single empire. D. Classical Greece had an enormous military force, while Persia’s military was small and disorganized.

[ad_1]

Answer:

C. Classical Greece was organized into independent city-states, while Persia was ruled over by a single empire.

Explanation:

The classical greek empire was actually a compound of independent city states that had more or less the same political and social structure, te base of the social pyramid were the slaves and only male had citizenship and political status, while in the Persian empire there were no slaves, they were ruled by a centric fiure in the King and he appointed several governors to rule over little provinces so his influence and power could reach to the whole empire.

[ad_2]

Categories
Assignment Help

The lengths of two sides of a right triangle are 5 inches and 8 inches. What is the difference between the two possible lengths of the third side of the triangle? Round your answer to the nearest tenth.

[ad_1]

If 5 in and 8 in are legs:
hypotenuse = √(5²+8²) = √89 ≈ 9.4 in.

If 5 in is the leg and 8 in is the hypotenuse:
other leg = √(8²-5²) = √39 ≈ 6.2 in.

The difference between the two possible lengths of the third side = 
9.4 – 6.2 = 3.2 in.

[ad_2]

Categories
Assignment Help

What is the difference between the ant and the grasshopper in the tale

[ad_1]

The ant is a hard worker who knows that in order to have a comfortable and happy lifestyle, one must work to obtain it, instead of squander time with play.

The grasshopper is a character who only cared about playing and having fun, and so when the time came (winter) when he truly wanted to be inside and comfortable, there was no food and shelter to sustain him. He did not understand the greater value of working hard for comfort. 

[ad_2]

Categories
Assignment Help

What is the difference between active transport and diffusion in terms of movement of particles?

[ad_1]

Answered by answersmine AT 22/10/2019 – 03:14 AM

Active transport is the movement of dissolved molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration. The particles move against the concentration gradient, using energy released during respiration.

Post your answer

[ad_2]

Categories
Assignment Help

1). a). What is the difference between a physical property and a chemical property? b). Give an example of one physical property and one for chemical property for each pf the following: wood, gasoline, and baking soda?

[ad_1]

Physical is the property related to the forces and physical phenomenon’s and the thing that has a physical property doesn’t reacts with something. Chemical property is based on the reactions between atoms/ chemical compounds , the bonds are developed between electrons so it’s often refered to the chemical elements.

An example is the ions’ extrication of an chemical compound. If compound has already ions the extrication goes physically. Differently if compound has not ions, it reacts with other compounds in case to ions be developed. (Chemical phenomenon/property)

[ad_2]

Categories
Assignment Help

The main difference between gases and liquids is that in gases A.the molecules are moving faster b.the forces between molecules are greater c.the distance between molecules are greater d.the molecules collide more frequently

[ad_1]

The main difference between gases and liquids is that in gases A.the molecules are moving faster b.the forces between molecules are greater c.the distance between molecules are greater d.the molecules collide more frequently

[ad_2]

Categories
Assignment Help

Explain how to translate the phrase into an algebraic expression. four times the difference of eight and a number

[ad_1]

Explain how to translate the phrase into an algebraic expression. four times the difference of eight and a number

[ad_2]

Categories
Assignment Help

The difference in emf between the primary coil of a transformer and the secondary coil is directly related to the relative number of turns in the coils. true or false

[ad_1]

The difference in emf between the primary coil of a transformer and the secondary coil is directly related to the relative number of turns in the coils. true or false

[ad_2]

Categories
Assignment Help

What change do you think would make a positive difference in the United States?

[ad_1]

Answered by answersmine AT 22/10/2019 – 03:51 AM

Letting people make their own choices and let them suffer the consequences if it’s a bad choice, because people don’t learn from success they learn from failure. And if you ever look at any product its has a warning label thats another thingthey do, they baby us like were a bunch of kids, its apalling isnt it? And dont get me started on this eco friendly garbage.

Post your answer

[ad_2]

Categories
Assignment Help

What is the difference between motif and archetype

[ad_1]

An archetype is described as a recurring symbol, theme, character, or setting in multiple works. It’s something that’s appeared in literature so often that it’s very recognizable. For example, an archetypical theme is “love conquers all.” Where have we *not* seen that before? An archetypical plot structure is the infamous love triangle. 

A motif, though, is a recurring contrast, structure, or literary device that comes back in different forms. In Lord of the Flies, the beasties are symbols which are used as motifs which represent fear, but it comes in different forms.

[ad_2]

Categories
Assignment Help

Which statement best describes the difference between strong nuclear forces and weak nuclear forces? a) Weak nuclear forces hold protons and neutrons together; strong nuclear forces hold electrons in their shells. b) Strong nuclear forces are responsible for holding electrons in bonds; weak nuclear forces are involved when the bonds break. c) Weak nuclear forces hold the atoms’ nucleus together; strong nuclear forces tear them apart. d) Strong nuclear forces are responsible for holding together the nucleus of an atom; weak nuclear forces are involved when certain types of atoms break down.

[ad_1]

There are four types of fundamental forces in nature.These are named as gravitational force,electromagnetic force,strong nuclear force and weak nuclear force.

As per the question we have to understand the role of strong nuclear force and weak nuclear force.

An atom consists of a nucleus surrounded by extra nuclear part consisting of electrons in various orbits.The nucleus contains two basic particles called protons and neutrons .Protons are positively charged while neutrons are neutral.Protons being positively charged will impart repulsive force on each other and may come out of the nucleus.But the nucleus is stable.That is due to the strong nuclear force.

Strong nuclear force is a spin dependent and charge independent force which comes into existence due to the mutual interaction of gluons which binds the protons and neutrons .Hence it is attractive in nature.It’s 100 times more stronger than electromagnetic force also.

Weak nuclear force comes into existence during radio -active decay .This force is due to the exchange of ‘ w’ and ‘z’ bosons[the particles like protons and neutrons having integral or zero spin] which are heavier in nature.The role of it is to change protons into neutrons and vice versa.Its a short range force.

Hence the option D is right.

[ad_2]

Categories
Assignment Help

Which shows a difference of squares?10y2 – 4x216y2 – x28x2 – 40x + 2564×2 – 48x + 9

[ad_1]

Which shows a difference of squares?10y2 – 4x216y2 – x28x2 – 40x + 2564×2 – 48x + 9

[ad_2]

Categories
Assignment Help

The sum of two numbers is 52. The difference is 38. What are the two numbers?

[ad_1]

The sum of two numbers is 52. The difference is 38. What are the two numbers?

[ad_2]

Categories
Assignment Help

What is the difference between the French governments maximilien de Robespierre and Napoleon Bonaparte

[ad_1]

What is the difference between the French governments maximilien de Robespierre and Napoleon Bonaparte

[ad_2]

Categories
Assignment Help

Classical conditioning and operant conditioning are two learning paradigms within the behaviorist tradition. a major difference between these two paradigms is that:

[ad_1]

Classical Conditioning was used by Ivan Pavlov to show how a signal can stimulate a response such as a bell. Here the dog associates the sound of a bell to food.

Operant Conditioning, on the other hand, was used by B.F Skinner. It associated reinforcement and punishment with a certain desired behavior. For example, a dog eagerly gets the ball because it gets something in return. Punishment can be a ground for not having something that a person wants, so the person avoids breaking the rules.

[ad_2]

Categories
Assignment Help

Find the difference quotient of f(x)=5x+4

[ad_1]

Find the difference quotient of f(x)=5x+4

[ad_2]

Categories
Assignment Help

What is the difference between forte and fortissimo?

[ad_1]

Painting that integrates many different painting media and materials is classified as “mixed-media” painting.

A mixed media painting is one which joins distinctive painting and drawing materials and techniques, instead of just a single medium. Any materials can be utilized, including collection things, for example, pages from magazines, daily paper, photos, texture, soil, or bundling. Or on the other hand a blended media piece can be as ‘basic’ as utilizing two mediums, for example, acrylic paints with pastel to finish everything.

Mixed media is certifiably not a twentieth century wonder, in spite of the fact that in earlier hundreds of years specialists were less test in what they utilized.

[ad_2]

Categories
Assignment Help

What is the main difference between An ode and an elegy

[ad_1]

Answer: In the “The Way to Wealth by Bejamin Franklin, the author uses many narrative voices to stress the importance of frugality. The essay begins as Poor Richard addresses his audience, “Courteous Reader,” and admits that few “other learned authors” have quoted him, despite his being “an eminent author of almanacs annually now a full quarter of a century” . Poor Richard does take solace in the fact that “ authority” exists. At this point in the essay, Poor Richard makes a confession: “I have sometimes quoted myself with great gravity”.

Upon observing a crowd waiting for “a vendue of merchant goods” to open for business, Poor Richard overhears the people “conversing on the badness of the times”. One person in the crowd calls out to another, “a plain clean old man, with white locks” asks him of his opinion of the times and of the “heavy taxes quite ruin the country”. The man, Father Abraham, is happy to oblige, and he gives a short speech to the crowd, while Poor Richard listens and looks on.


Father Abraham begins his speech by acknowledging that the taxes are “indeed very heavy,” but much worse than the taxes imposed by the government are the taxes of “our idleness , our folly, and from these taxes the commissioners cannot ease or deliver us by allowing an abatement”. He quotes Poor Richard here to offer the crowd advice about what to do about this problem: “God helps them that help themselves”.


As you can see, there are many narrative voices and they are important in the sense that they encourage the idea of working hard and being thrifty with the money we have.

[ad_2]

Categories
Assignment Help

Find the difference. Correct and best explained answer gets brainliest.

[ad_1]

You need to determine the number of ways in which 30 competitors from 50 can qualify. First, you have to realize that the order is irrelevant, that is: it is the same competitor_1, competitor _2, competitor _3 than competitor_3, competitor_2, competitor_1, or any combination of those three competitors.

So, the number of ways is which 30 competitors from 50 can qualify is given by the formula of combinations, which is:

C (m,n) = m! / (n! * (m -n)! )

=> C (50,30) = 50! / (30! (50 – 30)! ) = (50!) / [30! (50 – 30)!] = 50! / [30! 20!] =

 = 47,129,212,243,960 different ways the qualifiying round of 30 competitors can be selected from the 50 competitors.

[ad_2]

Categories
Assignment Help

Tina conducted an experiment to test her hypothesis. Her hypothesis was that by crushing aspirin and putting it into potting soil increases the growth rate of tomato plants. The results of the experiment show that there was no significant difference in the growth rates between the control and the experimental groups. What should Tina do with the results of this experiment?

[ad_1]

The unknown of this problem is the experimental percent of water in the compound in order to remove the water of hydrogen, given the following:

Mass of crucible, cover and contents before heating                               23.54 g
Mass of empty crucible and cover                                                            18.82 g
Mass of crucible, cover, and contents after heating to constant mass     20.94 g

In order to get the answer, determine the following:

Mass of hydrated salt used                          = 23.54 g – 18.82 g = 4.72 g
Mass of dehydrated salt after heating          = 20.94 g – 18.82 g = 2.12 g
Mass of water liberated from salt                 = 4.72 g – 2.12 g = 2.60 g

Then solve the percent of water in the hydrated salt by:

% water = (mass of water / mass of hydrated salt) x 100
% water = 2.60 g / 4.72 g x 100
% water = 55.08 % in the compound 

[ad_2]

Categories
Assignment Help

The sum of two numbers is 44 . Their difference is 22 .

[ad_1]

The sum of two numbers is 44 . Their difference is 22 .

[ad_2]

Categories
Assignment Help

Find the difference. Correct and best explained answer gets brainliest.

[ad_1]

You need to determine the number of ways in which 30 competitors from 50 can qualify. First, you have to realize that the order is irrelevant, that is: it is the same competitor_1, competitor _2, competitor _3 than competitor_3, competitor_2, competitor_1, or any combination of those three competitors.

So, the number of ways is which 30 competitors from 50 can qualify is given by the formula of combinations, which is:

C (m,n) = m! / (n! * (m -n)! )

=> C (50,30) = 50! / (30! (50 – 30)! ) = (50!) / [30! (50 – 30)!] = 50! / [30! 20!] =

 = 47,129,212,243,960 different ways the qualifiying round of 30 competitors can be selected from the 50 competitors.

[ad_2]