Hydrogen gas can be used to generate electricity in a process called "hydrogen fuel cell" technology.
What is Hydrogen Fuel Cells?An electrochemical device called a hydrogen fuel cell uses hydrogen fuel to produce electricity, heat, and water. This is how it goes:
1. From a storage tank or another source, hydrogen gas is delivered into the fuel cell.
2. The anode (negative electrode) of the fuel cell splits the hydrogen gas into protons and electrons.
3. While the electrons are compelled through an external circuit to produce an electric current, the protons go through a proton exchange membrane.
4. At the cathode (positive electrode), protons react with oxygen (often from air) to produce water and heat, which are then discharged as byproducts.
The overall chemical reaction can be expressed as:
2H2 + O2 → 2H2O + energy
Any electromagnetically sensitive equipment can be run by an electric engine powered by a fusion reactor, including vehicles, homes, and commercial buildings.
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A picture of the sun to refer to the word ‘sun’ is an example of rebus writing. True or False.
to what extent was the allied victory in WW1 a major turning point in American Politics & culture?
FORENSIC SCIENCE
5. Who are the members of the unit and what do they do?
Note that members of the Forensic unit include forensic scientists, crime scene investigators, and forensic analysts. They collect and analyze physical evidence to help solve crimes.
Why is Forensic science important?Forensic science is important because it helps law enforcement solve crimes and bring criminals to justice.
It uses scientific methods and techniques to analyze physical evidence, such as DNA, fingerprints, and ballistics and can provide crucial information to investigators. It can also exonerate the innocent by revealing evidence that was previously unknown or overlooked.
To become a forensic scientist, one typically needs a bachelor's degree in forensic science or a related field and may require additional training or certification.
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When children begin to_____, they're moving from the sensorimotor stage to the preoperational stage.
A. Speak and pretend
B. Grasp objects and small
C. Roll over and crawl
D. Assimilate and accommodate
Answer: A
Explanation: While transitioning from sensorimotor to the preoperational stage, children's mental concepts greatly improve. B and C occur during the sensorimotor stage, and D occurs much later in development.
AP PSYCH
what is an example of a positive or negative reinforcer that can be used to get a teenager to take shorter showers? (PSYCHOLOGY)
An example of a negative reinforcer that can be used to get a teenager to take shorter showers is to restrict access to other desirable activities until the teenager takes a shorter shower.
For instance, the teenager can be told that they can only use their phone or watch TV after they have taken a shower that is under a certain duration. This negative reinforcement will encourage the teenager to take a shorter shower so that they can access the other desirable activities they want to engage in.It is important to note that negative reinforcement should be used with caution, and it is important to find a balance that does not lead to excessive punishment or anxiety for the teenager. Positive reinforcement, such as offering praise or small rewards for taking shorter showers, can also be effective in promoting desirable behaviors.To know more about reinforcement visit:
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A study involves 601 randomly selected deaths, with 34 of them caused by accidents. Construct a 98% confidence interval for the percentage of all deaths that are caused by accidents.
The writing system that was invented for Cherokee in the early nineteenth century is an example of logographic writing. True or False.
It is FALSE to state that the writing system that was invented for Cherokee in the early nineteenth century is an example of logographic writing.
What is the rationale for the above response?The writing system that was invented for Cherokee in the early nineteenth century is an example of a syllabary writing system, not a logographic system.
A syllabary is a writing system in which each character represents a syllable or a combination of consonant and vowel sounds, whereas a logographic system uses characters to represent words or ideas. The Cherokee syllabary was developed by Sequoyah and is still in use today by the Cherokee Nation for reading and writing in the Cherokee language.
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The frequency of a recessive allele in a population is 40%. What variable in the Hardy Weinberg equations does the
40% refer to? Why?
Here, in Hardy Weinberg principle, q is the frequency of the recessive allele i.e. 0.40 and that of the dominant allele(p) is 0.60.
What is Hardy Weinberg's principle?The frequency of an allele in a population is referred to as its allele frequency. It is calculated by dividing the number of gene copies by the number of times the allele occurs in the population.
The frequency and consistency of a gene's expression for a certain gene can be explained quantitatively by a principle. According to the underlying theory, the gene pool and allelic frequency both stay constant over time. Genetic balance is the term used to describe this process.
[tex]p + q = 1[/tex]
Where p is the frequency of the Y allele and p is the frequency of the Y allele. In the lower half of the picture, the Hardy-Weinberg analysis simulates the outcome of random mating in the absence of selection, drift, mutation, or migration (eg, in the absence of evolution).
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Reciprocity is a property of human language, not shared by any other animal communication system. TRUE OR FLASE^ help
Answer: true I think
Explanation: mere guess
how can an dagerous situation be fun?
Answer: adrenaline rush
Explanation:
an adrenaline rush can make dangerous situations fun, think of riding a roller-coaster
Suppose the real GDP in the Texas in 2019 was 650 billion and the population was 2.5 million. If the population was 2 million and real GDP was 390.0 billion in 2010. What was the growth rate of real GDP per person per year during this period?
As a result, the annual growth rate of real GDP was around 57.78% over this time.
What do you mean by GDP?A country's GDP measures the monetary value of final goods and services—those that consumers buy—that were created within a certain time frame (say a quarter or a year). It includes every product made entirely within a country's borders. Gross domestic product (GDP) is a financial measurement of the total market price of all the finished goods and services that countries produce and sell over a specific time period. Given how difficult and subjective this assessment is, it must be frequently revised before it is taken seriously as an indicator.
Who controls GDP?The Bureau of Labor Statistics, or BLS, is the organization that the US government uses to gather and produce economic data. The Bureau of Economic Analysis, or BEA, a division of the Department of Commerce, uses the data after it has been organized to calculate the GDP and the national income.
We can use the following formula to determine the growth rate of real GDP per person year between 2010 and 2019:
Growth rate = [(Real GDP in 2019 / Population in 2019) - (Real GDP in 2010 / Population in 2010)] / (Number of years)
Growth rate = [(650 billion / 2.5 million) - (390.0 billion / 2 million)] / (2019 - 2010)
Simplifying this expression, we get:
Growth rate = (260 billion / 0.5 million) / 9
Growth rate = 57.78
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f) What is the autonomous spending in the scenario from part (e)?
Independent of the level of income in the economy, a government must make essential autonomous expenditures. Due to its necessity for maintaining a country, the majority of government spending is seen as independent expenditure.
What is meant by autonomous spending?Independent of the level of income in the economy, a government must make essential autonomous expenditures. Due to its necessity for maintaining a country, the majority of government spending is seen as independent expenditure. Autonomous expenditures include things like taxes, exports, and necessities like food and shelter. These are primarily driven by outside variables like trade agreements, political unpredictability, interest rates, etc.
What is autonomous spending in a formula?Autonomous consumption is significant in the Keynesian model of aggregate expenditure. C = a +bY. In this equation, b stands for the marginal propensity to spend from income, while a represents the amount of autonomous consumption.
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Explain the degree to which dependency theory accounts for uneven economic development at the global scale
Answer:
Explanation:
Dependency theory attempts to explain the unequal development of countries in different parts of the world. It argues that the global structure of economic relations between the core and peripheral countries creates an unequal exchange of resources. Core countries control and benefit from the international economic system while periphery countries remain underdeveloped and dependent. Dependency theory argues that this unequal exchange of resources is the main cause of uneven economic development at the global scale. It further suggests that the only way to reduce these disparities is to reduce the dependence of peripheral countries on the core countries and to foster their independent economic growth.
Dependency theory is a theoretical framework that explains the uneven economic development of countries and regions in the global economy.
What is dependency theory?Dependency theory is a theoretical framework that explains the global economy's uneven economic development of countries and regions.
According to this theory, some countries' development is hampered by their reliance on other countries or regions for economic growth.
Dependency theory explains global economic disparities by arguing that developed countries in the core have exploited and continue to exploit less developed countries in the periphery, resulting in their economic underdevelopment.
According to the theory, less developed countries can only develop if they break free from their reliance on the core countries and establish their own self-sufficient economic systems.
Thus, dependency theorists argue that this unequal relationship between the core and periphery is maintained through various mechanisms, such as unequal exchange, multinational corporations, and international financial institutions.
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K 5. Write a statement from the diagram that can b I MLGIALHaLGHE justified by using the Angle Addition Postulate. 6. Write a statement from the diagram that can be justified by using the definition of a right angle. 7. Given that K is the midpoint of FT, write a statement that can be justified by aging the air of F7; defigition of a midpoint. if K I 8. Given that ZGHP = ZIFH, write a statement that can be justified by using the definition of congruent angles. Lesson 6-2F K I mLGIMLH=LGH 5. Write a statement from the diagram that can be justified by using the Angle Addition Postulate. 6. Write a statement from the diagram that can be justified by using the definition of a right angle. 7. Given that K is the midpoint of FI, write a serenes drat can be justified by using the hot Flyt, 8. Given that ZGHF = LIFH, write a statement that can be justified by using the definition of congruent angles.
The Angle Addition Postulate states that the measure of an angle is equal to the sum of the measures of its smaller angles. In other words, if two angles are combined to form a larger angle, then the measure of the larger angle is equal to the sum of the measures of the smaller angles.
How to explain the informationRight Angle: A right angle is an angle that measures exactly 90 degrees. It is represented by a small square symbol (∟) and is often used as a building block for many other types of angles and geometric figures.
Midpoint: The midpoint of a line segment is a point that divides the line segment into two equal parts. It is the point on the line segment that is exactly halfway between its two endpoints.
Congruent Angles: Congruent angles are angles that have the same measure or size. Two angles are considered congruent if they are equal in measure, regardless of their location or orientation in the plane. Congruent angles are represented using the symbol "≅".
An overview was given as your information is incomplete.
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How should people get the resources they need?
How would Christopher Columbus answer this
Based on the passage, it can be inferred that in the early nineteenth century international relations were increasingly perceived as being governed by the desire to
a- be ruled by absolute monarchs and have low socioeconomic people subjugated
b- have governments ruled by enlightenment ideas and self determination
c- continue traditional subsistence agricultural practices to feed the population
d- transform economies through industrialization and compete at the global scale with European powers
Thank you,
MM
Answer:
Based on the information given, it can be inferred that in the early nineteenth-century international relations were increasingly perceived as being governed by the desire to transform economies through industrialization and compete globally with European powers.
Explanation:
Languages tend not to change very much over time. TRUE OR FALSE.
False. Languages are constantly evolving and changing over time. New words are created, old words fall out of use, and pronunciation, grammar, and vocabulary can all shift and evolve over time.
How languages tend to change over time?
This process of change is a natural part of the development of a language, and it is driven by a variety of factors, including social, cultural, and technological changes.
For example, new technologies have led to the creation of new words and phrases that did not exist before, such as "texting" or "streaming." Additionally, globalization and the spread of cultures and languages can also lead to changes in a language as new words and phrases are adopted from other languages.
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How should people get the resources they need
When have you ever failed at something as a kid? What was the result?
Answer:when i was a little kid i failed at riding a bike, i rode the bike over and over and i kept failing.. when i got to highschool i still didn't know how to ride a bike but i tried again and crashed into a net ... after that i eventually learned how to ride a bike and now it's actually really fun
Explanation:
don't give up keep trying
How should people get the resources they need
How would Mahommah baquaqua answer this
People get the resources they need by working hard for it and by the help of others.
Mahommah Baquaqua might have answered this question based on what is known about him.
What is the resources about?Mahommah Baquaqua was an African born in the Kingdom of Futa Jallon in present-day Guinea who was enslaved and brought to the United States in the mid-19th century. As an enslaved person, he would not have had the freedom or resources to acquire the things he needed, and would have relied on his owner to provide for his basic needs.
However, if he were asked how people should get the resources they need, it is likely that he would emphasize the importance of self-sufficiency and hard work. Baquaqua was known for his strong work ethic and determination, even in the face of great adversity, and it is likely that he would have encouraged others to take a similar approach to acquiring what they need.
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The horizontal surface on which the objects slide is frictionless. The acceleration of gravity is 9.8 m/s². If Fr = 8 N, what is the magnitude of the force exerted on the block with mass 9 kg by the block with mass 4 kg? Answer in units of N. (Fr is pushing from the right of the 4 kg mass)
hope helped you make brainalist and keep smiling
The magnitude of the force exerted on the block with mass 9 kg by the block with mass 4 kg is 82.68 N
What is friction?A force known as friction exists between two surfaces that are sliding or attempting to glide over one another.
Since the horizontal surface on which the objects slide is frictionless, the only forces acting on the two blocks are their weight and the force exerted by the 4 kg block on the 9 kg block.
Let F be the magnitude of the force exerted by the 4 kg block on the 9 kg block. According to Newton's second law, the acceleration a of the system is:
a = (F - Fr)/(m1 + m2)
a = (F - 8 N)/(4 kg + 9 kg) = (F - 8)/13 [tex]m/s^2[/tex]
On the other hand, the gravitational force acting on the 9 kg block is:
Fg2 = m2 x g = 9 kg x 9.8 [tex]m/s^2[/tex] = 88.2 N
According to Newton's second law, this force is balanced by the force exerted by the 4 kg block on the 9 kg block, so we have:
F = Fg2 = 88.2 N
Substituting this into the equation for acceleration, we get:
a = (88.2 N - 8 N)/(4 kg + 9 kg) = 6.36 [tex]m/s^2[/tex]
Finally, we can use this acceleration to find the force exerted on the 9 kg block by the 4 kg block using Newton's second law:
F - Fr = (m1 + m2) x a = 13 kg x 6.36 [tex]m/s^2[/tex] = 82.68 N
Thus, the magnitude of the force exerted on the block with mass 9 kg by the block with mass 4 kg is 82.68 N.
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Detemine 4 models where the only x-intercepts are at: x=-4,-2,1, 3 and the y-intercept is at f(0)=5. help...
The different models where the only x-intercepts are at: x=-4,-2,1, 3 and the y-intercept is at f(0)=5 are:
The ModelsA polynomial function of degree 4:
f(x) = a(x + 4)(x + 2)(x - 1)(x - 3) + 5
where a is a constant determined by the specific requirements of the model. This function has x-intercepts at -4, -2, 1, and 3, and the y-intercept is at f(0) = 5.
A piecewise function:
f(x) =
5, if x < -4
5 + b(x + 4), if -4 <= x < -2
5 + b(x + 4) + c(x + 2), if -2 <= x < 1
5 + b(x + 4) + c(x + 2) + d(x - 1), if 1 <= x < 3
5 + b(x + 4) + c(x + 2) + d(x - 1) + e(x - 3), if x >= 3
where b, c, d, and e are constants determined by the specific requirements of the model. This function has x-intercepts at -4, -2, 1, and 3, and the y-intercept is at f(0) = 5.
Linear model: f(x) = mx + b
Where m is the slope of the line, and b is the y-intercept. To find m, we can use the points (-4, 5) and (-2, 5), and then solve for b using the y-intercept.
m = (5 - 5)/(-4 - (-2)) = 0
b = 5
Therefore, the linear model is: f(x) = 0x + 5
Quadratic model: f(x) = ax^2 + bx + c
We can use the three points (-4, 5), (-2, 5), and (3, 5) to solve for a, b, and c.
a = (5 - (0 * (-2) + 5) - (0 * 3 + 5)) / (-4^2 - (-2^2) - (3^2)) = 0
b = (0 * (-4) + 5 - (0 * 3 + 5)) / (-4 - 3) - (-2 - 3) = 0
c = 5
Therefore, the quadratic model is: f(x) = 0x^2 + 0x + 5
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Adults can learn a language more quickly than children because of their higher mental capacity. TRUE OR FALSE.
Using practical instances distinguish logical truth from empirical truth. As a critical thinker, show why knowledge of this distinction is relevant for work and everyday contexts.
The empirical truth conceivably doesn't exist but it refers specifically to highly complex manifestations of logical truths.
What is Logical truth?Logical truth may be defined as the most fundamental concept in logic. It broadly speaks to a statement that is true regardless of the truth or falsity of its constituent propositions.
Logical truth underpinning is too intricate for us to understand. Empirical truths are attributed to empirical means while logical truths deal with logical facts and processes.
Logical truths are statements that are necessarily true based on the laws of logic and mathematics. They are not dependent on empirical evidence or observation. Examples of logical truths include 4 + 4 = 8.
Empirical truths are statements that are based on observation, experimentation, or experience. They can be confirmed or refuted through evidence and can change over time as new information is discovered.
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A _____ is an example of a service that can be purchased.
a. Car
b. DVD
c. Sweater
d. Massage
Could anyone please help me out?
Answer:
Explanation:
d. Massage is an example of a service that can be purchased.
When Bethany's mother had a family heirloom appraised a few years ago, it was worth $560. Since then, it has been increasing in value by the same percentage each year. One year after Bethany's mother first had the heirloom appraised, it was worth $644. Bethany wrote the function h(t) = 560(N t) to represent the value in dollars of the heirloom t years after her mother first had it appraised. What number does N represent in the function Bethany wrote? Write the decimal form of the number represented by N in Bethany's function.
What’s the hardest thing you’ve ever had to do in life as a kid or teenager? What made it difficult? Did you succeed at the challenge, or not?
Giving out BRAINLIEST.
The hardest thing I ever had to do as a kid was to stand up to my bullies.
How did I overcome this problem?
I was a timid and introverted child and was often the target of teasing and bullying by my classmates. This made me feel inferior and powerless. The difficulty of this challenge was to overcome my fear of retaliation and find the courage to confront my bullies.
One day, I had enough. I decided that I couldn't go on living this way, and that I had to take action. I practiced what I would say in front of a mirror, and I tried to imagine myself as a confident and brave person. When the day finally came, I approached my bullies with a calm demeanor and spoke my mind. To my surprise, they backed down and I was finally able to gain their respect.
Although the experience was difficult and challenging, I was able to overcome my fears and succeed at standing up to my bullies. This experience taught me the value of self-confidence and the power of speaking up for oneself. It was a defining moment in my life and one that has stayed with me to this day.
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The English spelling system is for the most part consistent with the pronunciation of English . True or False
A high school theatre club has 40 students, of whom 6 are left handed
It is possible to have an alphabetic writing system that represents just consonants. True or False.
