What are the standard si units for speed

Answers

Answer 1

Answer:

m/s, m s−1

Explanation:

Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour. For air and marine travel the knot is commonly used.

hope i helped

Answer 2
m/s (miles per second)

Related Questions

Direct PLUS loans are taken out by _____.

A. Students’ parents

B. The college the students attends

C. The federal government

D. Students

Answers

Answer:

Students' parents

Explanation:

An object is rotating at a constant angular velocity of 0.50 rad/s. What angle (in deg) does the object rotate through in 12 s?

Answers

(0.50 rad/s) * (12 s) = 6 rad

Convert this to degrees; for every π rad, you have 180º, so

6 rad = (6 rad) * (180/π º/rad) = (1080/π)º

or about 343.76º.

Which of the following is true about tariffs?
They are paid on international trade only.
They are paid by immigrants only.
They are paid on wealth only.
They are paid to support national defense only.

Answers

They are paid on international trade only

The statement "They are paid on international trade only" is true about tariffs, option A is correct.

Tariffs are taxes or duties imposed on imported goods and, in some cases, exported goods.

They are specifically levied on international trade transactions, typically by the importing country.

Tariffs are used for various purposes, such as protecting domestic industries, regulating trade, generating revenue for the government, or addressing trade imbalances.

Hence, they are paid on international trade only is true about tariffs, option A is correct.

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What is the central idea of the role of myths

Answers

Answer:

One answer is that it leans on the message impossible is not impossible and indicates precise reasoning for general things ie) one myth to many others in maths some people would say maths it is not creative; but I guess it has a key magic factor over time for those who both study or have basic skills from and through at least problem solving.

Such myth can be reversed for those who find the study of maths interesting.

As the basics for some people do not find it challenging enough just repetitive and wouldn't understand what context of creativity.

As extract shows below.

Explanation:

Creativity is as central to mathematics as it is to art, literature, and music. The act of creation involves diametrical opposites--working intensely and relaxing, the frustration of failure and elation of discovery, satisfaction of seeing all the pieces fit together. It requires imagination, intellect, intuition, and aesthetic about the rightness of thing

Rice cultivation in Southeast Asia is largely what kind of activity?

Answers

Answer:

substinence

Explanation:

How can online text sources be used?
to download a new movie to your computer
to find information for a research paper
O to video chat with a friend or family member
to send e-mails or texts to friends

Answers

to find info for a research paper

Online text sources be used To find information for a research paper.

What is Online text?
Online texting
is the act of sending a text message to a mobile phone via an online service. Contrary to what you might believe, it is both more frequent and simple. You already have the abilities to send your first bulk text if you've sent out a marketing email. With services like EZ Texting, all you need to do to get started is sign up, upload your contacts who have given their consent, and start sending messages. You can accomplish this using any internet-connected device, including a laptop, computer, tablet, or smartphone. Using an internet service for texting only makes sense if you wish to communicate with more than 100 people, regardless of the type of phone or software they use. You can SMS thousands of people at once using internet software.

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Which system works with the lungs so the cells of your body receive oxygen?

Answers

Answer:

The lungs and respiratory system allow oxygen in the air to be taken into the body.

Answer:

circulatory system

A claim made in paragraph two states having access to computers at the center would make it easier for those kids to do their school work, which is not a piece of evidence supporting that claim.

Answers

Answer:

We like to play our favorite video games on our smart phones.

Explanation:

explain how different modes and locations of production have developed and changed over time

Answers

Production modes and locations have evolved significantly over time From scattered agricultural production to concentrated manufacturing in urban centers and the current trend of decentralized and sustainable production, these shifts have shaped societal structures, economies, and trade patterns.

How have the changes occurred

Agricultural Revolution: Initially, societies relied on subsistence farming in scattered locations.

The Agricultural Revolution introduced more efficient farming methods, allowing for surplus production and the establishment of permanent settlements.

This led to concentrated agricultural production in specific regions, fostering trade and specialization.

Industrial Revolution: The Industrial Revolution transformed production modes by introducing machinery, leading to the concentration of manufacturing in urban centers.

Integrate sec(4x)tan(4x)dx

Answers

Answer:

sec(4x) + C

Explanation:

original problem: ∫sec(4x)tan(x)dx

use integration by substitution (u-sub) by setting u = 4x

if u = 4x, then du/dx = 4 and du = 4dx (dx = du/4)

after substitution the integral is ∫sec(u)tan(u)(du/4)

move the 1/4 out of the integral by using the integral Constant rule to form 1/4∫sec(u)tan(u)du

the anti-derivative of sec(u)tan(u) is sec(u), memorize your trigonometric derivatives!!!!

after integration, we get sec(u)/4 + C , now plug u back into the equation

sec(4x) + C is the general solution

∫sec(4x)tan(4x) dx = sec(4x) + C

Integration is a mathematical operation that involves finding the antiderivative of a function. It reverses the process of differentiation and allows us to determine the original function from its derivative. Integration is commonly used to calculate areas under curves and to solve various problems in calculus and mathematical analysis.

To integrate the given expression ∫sec(4x)tan(4x) dx, we can use the substitution method.

Let's denote u = sec(4x). Then, du = sec(4x)tan(4x) dx.

Now, we rewrite the integral in terms of u:

∫sec(4x)tan(4x) dx = ∫du.

Integrating du with respect to u gives us:

∫du = u + C.

Finally, substituting back the expression for u, we get:

∫sec(4x)tan(4x) dx = sec(4x) + C, where C is the constant of integration.

7. The main purpose of a collapsible steering column is so that the driver's chest is protected from injury.
A. TRUE
B. FALSE

Answers

Answer:

A. True

Explanation:

The collapsible steering column, invented by Bela Barenyi, serves as a safety precaution for drivers when they get into accidents.

Before the collapsible steering column was invented, the steering column was a single long steel rod connecting the gearbox of the car to the steering wheel. Yes, this was definitely effective in controlment and turning movement of a vehicle, but when the driver got into an accident, the rod would shoot back towards the rear of the car and impale the driver. It would crush the driver's chest, immediately effective in seriously harming or killing him/her.

The invention of the collapsible steering column allows for the energy during impact to be absorbed rather than transferred. Upon impact in an accident, the steering column absorbs the collision energy and either collapses or breaks upon impact. This in turn decreases the chances of impaling the driver and immediately harming or killing him/her.

Which of the following statements is TRUE of attachment?
A. it's a learned physical behavior.
B. it's an important two-way experience between infant and adult.
C. it’s only an issue post toddlerhood.
D. it's not important during the first year.

Answers

Answer: B

Explanation: the bond that a mother and infant form is a bond that could and should last a life time. The bond is how the child knows who its mother is from birth verses everyone else around the child.

The statement which is true about attachment is that it is an important two-way experience between infant and adult. Thus, the correct option for this question is B.

What is Attachment?

Attachment may be defined as an intense and undergoing emotional bond that significantly attaches one person to another with respect to time and space.

Attachment is a type of innate physical and emotional behavior. So, the first option is eliminated. This emotional bond is present in each and every individual throughout their life since birth. So, the third option is eliminated. This behavior is important for each individual throughout their life span. So, the fourth option is also eliminated.

Therefore, attachment is an important two-way experience between infants and adults. Thus, the correct option for this question is B.

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Select the correct answer.
How does erosion affect streams?

A.
Erosion causes stream beds to become permanently steep.
B.
The water in streams warms up and rapidly evaporates due to continuous erosion.
C.
Erosion empties streams by causing water to seep underground.
D.
Streams meander, or curve, more due to erosion and deposition.
E.
As parts of a stream are eroded, it swells with the e

Answers

Answer:

d

Explanation:

plato

The way by which erosion affect streams as the erosion causes stream beds to become permanently steep. Thus, option A is correct.

What is erosion?

The degradation resulting in the bad quality or decreasing quantity of soil is called soil erosion.The erosion affect streams via Streams meander, or curve, more due to erosion and deposition.

Erosion causes deposition at unwanted places affecting the streams of water. The stream meander or curves are formed due to erosion and deposition.

The speed of the flowing water escalates with the increase in the distance and downward inclination. On the outer side of the meander, the water hits the bend with greater speed owing to the distance available for its maneuver. While on the inner side of the meander, the speed of the flowing water is comparatively low owing to the stumbling block offered by the bend.

Therefore, Through gradual erosion and deposition, the meander intensifies and gets cut out from the stream to form a separate water body known as 'Oxbow' lake.

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Bill Board is trying to reduce his sodium intake to an average of 2300 mg.
He records his sodium intake for 4 days.
The amounts are 2150 mg, 3005 mg, 2700 mg, and 2315 mg.
What is the patient’s average daily intake of sodium for those 4 days?
What would his 5th day sodium intake need to be to drop him below an average of 2300 mg

Answers

Answer:

mean average = 2542.5 mg

1330 mg

Explanation:

The patient's average  daily intake  of sodium for those 4 days can be calculated by taking the mean average of the sample amounts given over the number of the total days.

[tex]mean average = \frac{2150+3005+2700+2315}{4}[/tex]

[tex]mean average = \frac{10170}{4}[/tex]

mean average = 2542.5 mg

Therefore the patient's average daily intake of sodium for those 4 days = 2542.5 mg

What is the patient’s average daily intake of sodium for those 4 days?

What would his 5th day sodium intake need to be to drop him below an average of 2300 mg

given that mean average = 2300; we can also determine the fifth day sodium intake as follows:

[tex]mean average = \frac{2150+3005+2700+2315+y}{5}\\2300 = \frac{2150+3005+2700+2315+y}{5}[/tex]

[tex]2300*5 =2150+3005+2700+2315+y[/tex]

[tex]11500 = 10170 +y[/tex]

[tex]11500-10170 =y[/tex]

y = 1330 mg

Hence, his sodium intake for the fifth day will be 1330 in order to drop him below an average of 2300 mg

Average sodium intake = 2542.5 mg/daySodium intake on 5th day = 1330 mg

(a) Calculating the Average Daily Sodium Intake for 4 Days

First, we need to calculate Bill Board's average daily sodium intake over the 4 recorded days. To do this, we sum the sodium intake for each day and then divide it by the number of days.

The recorded sodium intakes are:

- Day 1: 2150 mg

- Day 2: 3005 mg

- Day 3: 2700 mg

- Day 4: 2315 mg

Step 1: Sum the Sodium Intakes

2150 + 3005 + 2700 + 2315 = 10170 mg

Step 2: Calculate the Average

Average = [tex]\frac{10170 \, \text{mg}}{4 \, \text{days}}[/tex] = 2542.5 mg/day

So, Bill's average daily sodium intake over the 4 days is 2542.5 mg.

(b) Calculating the Required Sodium Intake on the 5th Day

Next, we need to determine the sodium intake on the 5th day which would bring the average sodium intake down to below 2300 mg over the 5 days.

Step 1: Set Up the Equation

Let x be the sodium intake on the 5th day.

To achieve an average intake of 2300 mg over 5 days, the total sodium intake for the 5 days should be:

2300 mg/day × 5 days = 11500 mg

We already have the total sodium intake for the first 4 days:

10170 mg

We set up the equation:

10170 mg + x = 11500 mg

Step 2: Solve for x

x = 11500 mg - 10170 mg = 1330 mg

So, Bill's sodium intake on the 5th day needs to be 1330 mg to bring his average daily intake below 2300 mg.

A group of friends began talking about environmental issues. Every time they
got together, they would talk and the group began to divide into sides, one
side saying that the environment was in danger, and the other side saying it
was not. As they continued to get together, each side began to take more and
more extreme positions. This is an example of:
A. group facilitation,

B. minority influence.

C. deindividuation

D. group polarization

Answers

Answer:

Group polarization is the answer

the correct answer is group polarization

Which of the following would cause a decrease in a nation's long-run economic growth?
I. A decline in productivity.
II. An increase in the labor force participation rate.
III. A decrease in the number of hours in the workweek.

I only.
II only.
III only.
I and II only.
I and III only.

Answers

Answer:

I and III only, decrease in productivity does indicate production loss can cause harm across the chain of trade and operation. It is important to the investment and to the market each number of hours they work as this tells us if the market is stable. For example financial market contributes output 40% major cities and over 4% for the whole country. Where a decrease in labor force occurs this does not tell us there is a problem with cash flow. It is usually services that suffer with decline in productivity. An example in behavior patterns in populous in manufacturing worldwide, show unhappiness in managerial levels compared to management roles for women in poorer countries, where a decrease in productivity could make this situation worse. a decrease in hours would affect more economically for both poorer countries and financial market output countries which dominate the world today nationally combined. This also includes work hours with adjoining countries for 40% of the world being farming and smaller scientific contributions that show and tell us they are more happier in their work and longer hour patterns. One example of this is within contentment levels found in discrete survey data with both phd Degree Masters etc qualified all in which showed each percentage for managers less in the broader markets of customer service and manufacturing. I and III affects all.  

Explanation:

how does hurston’s perspective toward race differ from other black writers from her era (APEX)

Answers

Answer: Hurston is more joyous and content with her race than many of her black peers.

Explanation: APEX

Answer:

Hurston is more joyous and content with her race than many of her black peers.

Explanation:

She focuses on highlighting the positive aspects of her racial identity.

What are the determinants of productivity? Explain two policies that can help to improve the productivity of a nation?

Answers

Answer:

Local Fiscal Incentive and Protetionism

Explanation:

1)     National Fiscal incentives: a country could approve a new policy that gives fiscal incentives to the industry in determined sectors (or all of them) such as tax-exempt, making it more attractive for industries to produce in that country in comparison to another one without that kind of policy. Usually, this is made by states to attract investments that otherwise would go to other states or countries.

2)     Protectionism: a country could elevate taxes on imports, making more expensive for a seller to buy internationally and sell internally. In consequence, the local industry would be incentivized to produce more as they could have a cheaper product than international competitors.

What is the first step in securing the vehicle in the post-trip inspection?

Answers

The  the first step in securing the vehicle in the post-trip inspection is  check the Brakes (pads, shoes, etc.)

What is a post-trip inspection?

A post-trip inspection is known to be a method or the way a person use to look for damage after a work linked drive.

When engaging in a post-trip checklist, make sure that you check the:

Brake system EngineAir compressor and lines, etc.

Conclusively, The reason of mandatory inspections  is to stop accidents by seeing small problems before they can be said to be dangerous and costly. So check your brakes before anything else.

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What does the quote from Trotsky’s Diary in Exile reveal about his and his like-minded comrades’ point of view regarding the fate of the Romanovs? Cite evidence from the text to support your answer.

Answers

Answer:

Trotsky’s Diary in Exile quote reveals urgency, cruelty, categorical ending.

Explanation:

“not only expedient but necessary." the urgency of "justice".

"The execution  of the czar’s family was needed..." cruelty.

"...ahead lay either complete victory or complete ruin… " categorical ending.

What are the types, sources, causes and effects of water pollution

Answers

Types:
1. Nutrients pollution
2. Surface water pollution
3. Oxygen depleting
4. Ground water pollution
5. Microbiological

Sources:
1. Sewage
2. Agricultural pollution
3. Oil pollution
4. Radioactive substances
5. River and marine dumping

Causes:
1. Industrial waste
2. Sewage and waste water
3. Mining activities
4. Marine dumping
5. Accidental oil leakage

Effects:
1. Death of aquatic life
2. Food chain disruption
3. Harmful economic effects
4. Decrease drinking water for humans
5. Increased cholera cases

How does the decision in Marbury v. Madison (1803) allow the judicial branch to check the power of other branches?

It prevents the president from using executive orders.
It limits the terms in office that a president can serve at two.
It allows the judiciary to limit the power of Congress to introduce and debate bills.
It affirms that the judicial branch can strike down an unconstitutional law.

Answers

Final answer:

The decision in Marbury v. Madison established judicial review, allowing the Supreme Court to invalidate unconstitutional laws and maintain checks and balances between government branches.

Explanation:

The decision in Marbury v. Madison (1803) is significant because it established the principle of judicial review, which allows the judicial branch to check the powers of the other branches of government. Through judicial review, the Supreme Court asserted the authority to declare laws passed by Congress unconstitutional if they conflict with the Constitution. Consequently, this granted the judiciary a critical role in maintaining the system of checks and balances that is essential for the functioning of a democratic government.

In his opinion, Chief Justice John Marshall stated that "it is emphatically the province and duty of the judicial department to say what the law is." This declaration affirmed that the courts have the power to interpret the Constitution and to ensure that no act of the government exceeds the bounds set by the Constitution. This has been a cornerstone of American constitutional law since the decision was made.

The decision in Marbury v. Madison (1803) established the principle of judicial review, which allows the Supreme Court to strike down unconstitutional laws, serving as a check on the legislative and executive branches. Hence option D) is correct .

Marbury v. Madison and Judicial Review

The decision in Marbury v. Madison (1803) is a cornerstone of U.S. constitutional law, establishing the principle of judicial review. This landmark case affirmed that the judicial branch has the authority to strike down laws passed by Congress if they are found to be unconstitutional. By securing this power, the Supreme Court can effectively check the powers of the legislative and executive branches, ensuring that no law or executive action can supersede the Constitution. The case's outcome highlighted the role of the Supreme Court as a protector of the Constitution, with a unique responsibility to interpret the law and maintain checks and balances within the federal government.

The Supreme Court, through its power of judicial review, serves as a vital check on the actions of both the legislative and executive branches. It can invalidate statutes, prevent the president from taking unconstitutional actions, and thus ensure that all branches of government operate within the limits of the Constitution. The case of Marbury v. Madison demonstrated the Supreme Court's power to nullify legislation and become a central player in the system of checks and balances that characterizes the American government.  Hence option D) is correct .

The writer wants to add a sentence after sentence 2 that previews the main line of reasoning in the paragraph. Which of the following best achieves this goal?

A. The Knights of Columbus, along with the Italian American Leader Generoso Pope, were instrumental in lobbying to have Columbus Day declared a federal holiday

B. When President Franklin Delano Roosevelt declared Columbus Day a holiday, it was celebrated on October 12 of every year until 1971.

C. However, several states-Alaska, Florida, Hawaii, Oregon, South Dakota, and Vermont-do not celebrate Columbus Day at all

D. In the last few decades, however, a new holiday has been celebrated on that second Monday in October: Indigenous Peoples’ Day

E. Instead of Columbus Day, however, people in Hawaii celebrate Discovers’ Day on the second Monday in October

Answers

Answer:

D

Explanation:

In the last few decades, however, a new holiday has been celebrated on that second Monday in October: Indigenous Peoples’ Day.

The master of life by pontiac speech, . What elements in the speech sound as though they were probably part of the original myth? 2. How does Pontiac make the myth relevant to the current situation he wants to remedy?


Read the speech again, underlining other metaphors and similes. In your journal or using your computer, write out your interpretation of each metaphor.

Answers

Answer:

1- He started his speech making reference to the sky and it´s infinit limits, mentioning their birth rights as part of the land , the country and the spirits that sorround that area.

2- The white ones wanted to eliminate the Native Americans´culture from the American continent, but he made some comments on their culture and beliefs. For him the mith is truely relevant because he mentions that the natives still pay homage to teir deads. They leave the alive world but are still walking around them, observing, communicating and influencing their acts

The master of life by the Pontiac speech the elements in his speech sound to be elements that are making indication to the sky and the limits, mentioning their birthrights as part of the land.

The white wanted to remove the Native Americans 'culture from the American continent and made to have some comments on their cultures and beliefs.

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Environmental-protection laws can be bad for the economy because they may do what?
eliminate innovation
reduce government revenue
increase unemployment
limit consumer choice

Answers

Answer:

Increase unemployment

Explanation:

If you don’t know, don’t say

Ap3x

Explain why a government might use rationing and what some effects of rationing could be.

(ECON)


Answers

Answer:

The reason why the government might use rationing is in certain circumstances where there isn't enough food, such as during times of war or crisis. Rationing could even be used during special events such as sport games or concerts. Rationing is unfair however, it is also very expensive to put into effect and it creates black markets. An example from the last 10 years of when rationing was done was during the time Hurricane Katrina hit. A lot of things were rationed such as food, water, and even oil. After Hurricane Katrina hit, the rationing lasted about a few more weeks after the hurricane was over

and the diffe...
(This passage is part of a speech delivered in 1872.)

The various conditions of men and the different uses they make of their powers and opportunities in life, are full of puzzling contrasts and contradictions. Here, as elsewhere, it is easy to dogmatize, but it is not so easy to define, explain and demonstrate. The natural laws for the government, well-being and progress of mankind, seem to be equal and are equal; but the subjects of these laws everywhere abound in inequalities, discords and contrasts. We cannot have fruit without flowers, but we often have flowers without fruit. The promise of youth often breaks down in manhood, and real excellence often comes unheralded and from unexpected quarters.

The scene presented from this view is as a thousand arrows shot from the same point and aimed at the same object. United in aim, they are divided in flight. Some fly too high, others too low. Some go to the right, others to the left. Some fly too far and others, not far enough, and only a few hit the mark. Such is life. United in the quiver, they are divided in the air. Matched when dormant, they are unmatched in action.

When we attempt to account for greatness we never get nearer to the truth than did the greatest of poets and philosophers when he classified the conditions of greatness: “Some are born great, some achieve greatness and some have greatness thrust upon them.”* We may take our choice of these three separate explanations and make which of them we please, most prominent in our discussion. Much can certainly be said of superior mental endowments, and I should on some accounts, lean strongly to that theory, but for numerous examples which seem, and do, contradict it, and for the depressing tendency such a theory must have on humanity generally.

This theory has truth in it, but it is not the whole truth. Men of very ordinary faculties have, nevertheless, made a very respectable way in the world and have sometimes presented even brilliant examples of success. On the other hand, what is called genius is often found by the wayside, a miserable wreck; the more deplorable and shocking because from the height from which it has fallen and the loss and ruin involved in the fall. There is, perhaps, a compensation in disappointment and in the contradiction of means to ends and promise to performance. These imply a constant effort on the part of nature to hold the balance between all her children and to bring success within the reach of the humblest as well as of the most exalted.

From apparently the basest metals we have the finest toned bells, and we are taught respect from simple manhood when we see how, from the various dregs of society, there come men who may well be regarded as the pride and as the watch towers of the race.

Steel is improved by laying on damp ground, and the rusty razor gets a keener edge after giving its dross to the dirt in which it has been allowed to lie neglected and forgotten. In like manner, too, humanity, though it lay among the ports, covered with the dust of neglect and poverty, may still retain the divine impulse and the element of improvement and progress. It is natural to revolt at squalor, but we may well relax our lip of scorn and contempt when we stand among the lowly and despised, for out of the rags of the meanest cradle there may come a great man and this is a treasure richer than all the wealth of the Orient.

In the second paragraph, the author develops a comparison between life and “a thousand arrows shot from the same point and aimed at the same object” primarily to suggest that

A)people exhibit remarkable diversity in their development over time

B)seemingly different objects can have surprisingly similar characteristics

C) talented people often fail to recognize valuable opportunities

D) most people fall into two broad categories based on their political leanings

E)most great men have emerged from humble origins

Answers

Answer:

B)seemingly different objects can have surprisingly similar characteristics

Explanation:

In the second paragraph, the author's point of a comparison between life and “a thousand arrows shot from the same point and aimed at the same object” primarily to suggest that :

The author's suggestion correlate with his point in the first paragraph in which he stated that the natural laws for the government, well-being and progress of mankind, seem to be equal and are equal, but the subjects of these laws everywhere abound in inequalities, discords and contrasts.

This clearly suggest that author's statement in the second paragraph about life and a thousand arrows shot from the same point and aimed at the same object means that seemingly different objects can have surprisingly similar characteristics.

The comparison between life and "a thousand arrows shot from the same point and aimed at the same object" is made to suggest that people exhibit remarkable diversity in their development over time, as shown in option A.

We can arrive at this answer because:

The author shows how adult life changes people.At this stage, not only the feeling of the end of youth is perceived, but people begin to develop and build their lives in different ways.This type of development takes place individually and is different for everyone.

Thus, the author reinforces the theme, that even though people are similar in many ways, the way they develop and become different from each other is something natural in life.

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To form memories your nerve cells must undergo ?

Answers

Answer:

Long-term potentation

Explanation:

What is the mass of exactly one mole of calcium acetate

Answers

Answer:

Approximately 158.17 g/mol is the mass of calcium acetate

Explanation:

Calcium Acetate's chemical formula is C4H6CaO4, which has been scientifically measured to 158.17.

When hydrogen is used in a fuel cell, the only waste product is/are

A) nitrogen oxides
B) carbon dioxide
C) methane
D) water
E) none of the above

Answers

Answer: D) water

Explanation: When pure hydrogen is used as the fuel, the only by-products generated from the fuel cell are pure water and heat.

When hydrogen is used in a fuel cell, the only waste product is water. Hence option D is correct.  

What is fuel cell?

Fuel cell is defined as a type of electrochemical cell that uses two redox processes to transform the chemical energy of fuel and oxidizer into electrical energy. Transportation, material handling, and permanent, portable, and emergency backup power are just a few of the many uses for fuel cells.

Through the usage of a fuel cell, the reaction between hydrogen and oxygen can produce energy. Such a cell was employed in the Apollo space program and provided two functions: it acted as a fuel source and a water source. Fuel cells that utilize hydrogen can produce electricity through a chemical reaction as opposed to combustion, with the only byproducts being heat and water.

Thus, when hydrogen is used in a fuel cell, the only waste product is water. Hence option D is correct.  

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A child has a toy balloon with a volume of 1.80 L. The temperature of the balloon when it was filled was 293 K at a pressure of 101.3 kPa. If the child were to let go of the balloon and it rose 3 kilometers into the sky where the pressure of 67.6 kPa and the temperature is 263 K, what would the new volume of the balloon be? Early surviving examples of typographic design and printing include a German poem on the Last Judgment, four calendars, and a number of editions of a Latin grammar by Aelius Donatus. The earliest dated examples of typographic printing are the ____________, issued in Mainz, Germany in 1454. HURYYYY ans please make it simple *Bills become laws through a detailed and thorough process, to ensure they are fair and beneficial to citizens. What step correctlycompletes this list of actions involved in creating a new state law?1. A bill is introduced in either house,2. Lawmakers work in committees.3. The bill is debated on the floor.4. Lawmakers vote on the bill.5. The bill is sent to the other house.6. Process is repeated in other house. Most analysts focus on the cost of tuition as the way to measure the cost of a college education. But incidentals, such as textbook costs, are rarely considered. A researcher at Drummand University wishes to estimate the textbook costs of first-year students at Drummand. To do so, she monitored the textbook cost of 250 first-year students and found that their average textbook cost was $300 per semester. Identify the population of interest to the researcher. A differentiable function f(x,y)f(x,y) has the property that f(2,5)=5f(2,5)=5 and fx(2,5)=7fx(2,5)=7 and fy(2,5)=7fy(2,5)=7. Find the equation of the tangent plane at the point on the surface z=f(x,y)z=f(x,y) where x=2x=2, y=5y=5. luna wants to know what proportion of 7th graders at her school are interested in taking art classes.which Is the best group to survey to find this information? A gas is compressed at constant temperature from a volume of 5.68 L to a volume of 2.35 L by an external pressure of 732 torr. Calculate the work done in J Given the following function header, compose a C++ programming statement that calls the function, passing the value 15 as an argument and assigning its return value to a variable named result. int doubleIt(int value) The structure supports a distributed load of w. The limiting stress in rod (1) is 370 MPa, and the limiting stress in each pin is 220 MPa. If the minimum factor of safety for the structure is 2.10, determine the maximum distributed load magnitude w that may be applied to the structure plus the stresses in the rod and pins at the maximum w. The third term of an arithmetic sequence is -8, and the fourth term is -20. What is the second term? Percy is plotting points on a graph. The ratio of y value to x value is 2 to 3 for each point what will be the x value of a point with y value of 18 A mine shaft has an ore elevator hung from a single braided cable of diameter 2.5 cm. Young's modulus of the cable is 101010 N/m2. When the cable is fully extended, the end of the cable is 700 m below the support. Vlad tried to solve an equation step by step.\qquad\begin{aligned} -8p+14&=42\\\\ \\ -8p&=28&\green{\text{Step } 1}\\\\ \\ p&=-3.5&\blue{\text{Step } 2}\\\\ \end{aligned} 8p+148pp=42=28=3.5Step 1Step 2 Russel wants to buy three ties and a belt and must spend no more that $80. The belt costs $28.50. If three ties are the same price, then how much can he pay for each tie? What happens to water when it freezesA its mass increasesB its mass decreasesC its density increasesD its density decreases Which of the following is included in the statement of cash flows? a.Cash flows from investing activities b.Total changes in stockholders' equity c.Changes in retained earnings d.Total assets A rectangular box has a width of x meters, length of x + 3 meters, and a height of x 2 meters. Write an expression for its volume. Remember an expression does NOT have an equal sign The reason the hypodermis acts as a shock absorber is that This psychological model holds that everyone experiences repetitive, unwanted, and intrusive thoughts, but those with obsessive-compulsive disorder are not able to dismiss or ignore those thoughts. The Waking Dead Co provides services for both cash and on account The accounts are adjusted monthly, For September, the folowing information is available Accounts Receivable on September 1st is $22,400 Allowance for Doubtful Accounts on September 1st is $4,400 Services provided during September for cash $20,000 Services provided during September on account $45,000 During the month collections on account were $34,400 and accounts wrilten off as bad debts were $2.000 The Walking Dead essmates bad detes at % of credt sales Do not use the dollar sign or a decimal in your answer. Commas are ok. What is the September 30th net realzable value of Accounts Recelvable?