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)
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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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Related Questions
Reflexivity  is the ability to create an infinite number of expressions in human language. TRUE OR FALSE.
Answers
The statement: "Reflexivity  is the ability to create an infinite number of expressions in human language" is FALSE
What is Reflexivity?Reflexivity refers to the ability of human language to refer to itself, that is, to use language to talk about language.
It is not related to the number of expressions that can be created in human language. The ability to create an infinite number of expressions is a fundamental property of human language known as productivity or generativity.
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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.
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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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When have you ever failed at something as a kid? What was the result?
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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
It is possible to have an alphabetic writing system that represents just consonants. True or False.
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PLEASE HELP ILL VOTE YOU FOR BRAINLIEST IF CORRECT
According to Article III, Section 2 of the Constitution, over which cases would federal courts hold jurisdiction?
A. conflicts between national political parties
B. disputes between citizens of different states
C. disagreements between district court judges
D.cases involving laws passed by Congress
Answers
Answer:
B
Explanation:
Article III, Section 2 of the US Constitution defines the jurisdiction of the federal courts, including the Supreme Court and the lower federal courts. Specifically, the federal courts hold jurisdiction over:
1.Cases that arise under the Constitution, federal laws, or treaties of the United States.
2.Cases involving ambassadors, public ministers, or consuls.
3.Cases in which the United States is a party.
4.Cases between two or more states, or between a state and citizens of another state, or between citizens of different states.
5.Cases between a state or its citizens and foreign countries or their citizens or subjects.
6.Cases involving admiralty and maritime jurisdiction.
7.Cases in which the federal government has a direct interest, such as disputes between federal agencies or challenges to federal regulations.
This jurisdictional framework is a key aspect of the US federal legal system, and it helps to define the respective roles and powers of the federal and state governments.
According to Article III, Section 2 of the Constitution, over which cases would federal courts hold jurisdictionB. disputes between citizens of different states
What Article III, Section 2 of the Constitution, over which cases would federal courts hold jurisdictionAccording to Article III, Section 2 of the United States Constitution, federal courts hold jurisdiction over cases involving:
- Controversies between two or more states
- Controversies between a state and citizens of another state
- Controversies between citizens of different states
- Controversies between citizens of the same state claiming lands under grants of different states
- Controversies between a state or its citizens and foreign states, citizens, or subjects
So, option B is correct: Federal courts would hold jurisdiction over disputes between citizens of different states.
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Explain the degree to which dependency theory accounts for uneven economic development at the global scale
Answers
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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Cite examples of cities that have experienced positive and negative aspects of urbanization.
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Beijing, China: Beijing has experienced negative aspects of urbanization, such as traffic congestion, air pollution, and a lack of green spaces.
What is the air pollution?Air pollution is the presence of harmful substances in the atmosphere, typically as a result of human activity. These pollutants can have serious impacts on human health and the environment, including climate change, smog, acid rain, and ozone depletion.
• Los Angeles, USA: Los Angeles has experienced positive aspects of urbanization, such as the creation of jobs, increased cultural diversity, improved infrastructure, and revitalization of neighborhoods.
• Barcelona, Spain: Barcelona has experienced positive aspects of urbanization, such as an increase in tourism, improved public transportation, a growing economy, and an influx of investment from abroad.
Negative Aspects of Urbanization
• Mumbai, India: Mumbai has experienced negative aspects of urbanization, including overcrowding, air and water pollution, poor sanitation, and a lack of affordable housing.
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A high school theatre club has 40 students, of whom 6 are left handed
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If FF represents the event that the first student selected is left-handed and SS represents the event that the second student selected is left-handed, then P(F∩S)=[P(F)][P(S|F)]=(640)(539)=301,560
to what extent was the allied victory in WW1 a major turning point in American Politics & culture?
Answers
The Allied victory in WW1 was a major turning point in American politics and culture. The victory marked the first time that the United States had played a major role in a global conflict, and it helped to cement the country's position as a world power. The victory also led to an upsurge in patriotism and national pride, as well as a newfound sense of confidence in the ability of the United States to take on a leadership role in international affairs.
The victory also had a major impact on the American economy. The war effort had spurred a massive expansion of the country's industrial base, and the increased demand for goods and services helped to spur the country's economy. The war also saw the emergence of a new wave of entrepreneurs, who took advantage of the increased demand for goods and services to build successful businesses.
The war also had a major effect on American culture. The war saw a surge in patriotism and national pride, as well as an upsurge in popular culture. The war also saw the emergence of new forms of entertainment, such as jazz and the movies, which helped to shape American culture for generations to come.
Overall, the Allied victory in WW1 was a major turning point in American politics and culture. It helped to cement the country's position as a world power, and it had a major impact on both the economy and culture.
FORENSIC SCIENCE
5. Who are the members of the unit and what do they do?
Answers
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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how can an dagerous situation be fun?
Answers
Answer: adrenaline rush
Explanation:
an adrenaline rush can make dangerous situations fun, think of riding a roller-coaster
able below.
Comprehension
& Analysis: Answer in complete sentences.
1. In these chapters, we read that Winnie thinks that "Mae must not go
to the gallows. What do you think will happen if she does go?
2. Jesse gives Winnie a bottle of the enchanted water. Do you think she
should drink it? Why or why not?
Answers
If Mae goes to the gallows, she will likely be put to death for her crimes. This would be a devastating event for her family and community, who have already suffered a great deal.
What is the Comprehension?Generally, I do not think Winnie should drink the enchanted water.
It is not clear what kind of effects it would have on her, and it could be dangerous. It is also possible that it could be a trick or a curse, and Winnie would be better off not taking the risk.
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CQ not found
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.
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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 cost of his annual physical will be 50% after deductible
The maximum amount that he can expect to pay out-of-pocket is $6,000. His annual deductible will be $800. Once he hits his annual deductible of $800, he will incur no additional costs for health care services for the rest of the calendar year
Answers
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)
Answers
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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Which one of the following statements reflects new thinking regarding the brain?
A. Brain development is linear.
B. The brain's capacity to learn grows steadily as an infant progresses to adulthood.
C. Early interactions directly affect the way the brain develops.
D. How a brain develops depends soley on the genes you are born with.
Answers
Note that the statement that reflects new thinking regarding the brain is " Early interactions directly affect the way the brain develops." (Option C)
What is the rationale for the above response?Research has shown that experiences and interactions during the early years of life can have a significant impact on brain development.
These experiences can shape the way the brain develops and can have a lasting effect on cognitive, social, and emotional development. This is a departure from earlier beliefs that brain development is predetermined by genetics or that it progresses linearly without much influence from environmental factors.
The brain's capacity to learn also changes over time, but it is not a steady growth throughout life.
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Languages tend not to change very much over time. TRUE OR FALSE.
Answers
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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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
Answers
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.
Explain the term productivity as a unique property of human language.
Answers
!!(Psychology)!!
What did Harlow’s studies tell us about fathers, how children should be treated in institutionalized settings, and adults with high levels of self-confidence?
Answers
Harlow's studies were performed by psychologist Harry Harlow in the 1950s and 60s, and they focused on the importance of social and emotional contact in the development of primates, including humans.
What is Harlow's Studies?
Harlow's most famous studies involved separating baby rhesus monkeys from their mothers and raising them with "surrogate mothers" made of either wire mesh or terry cloth.
The results of these studies showed that the baby monkeys preferred the comfort and warmth of the terry cloth mother, even when it did not provide food, over the wire mesh mother, which did provide food.
This demonstrated that social and emotional contact was more important to the monkeys' development and well-being than physical nourishment.
These findings had important implications for how children should be treated in institutionalized settings, such as orphanages and other care facilities.
Harlow's research showed that simple provision of food, shelter, and basic care was not enough to meet the emotional and social needs of young children.
Instead, it was necessary to provide them with consistent, nurturing relationships and emotional support in order to foster healthy development.
In summary, Harlow's studies emphasized the importance of social and emotional contact for healthy development and well-being, and provided important insights into how children should be treated in institutionalized settings and how early experiences can shape the development of self-confidence in adulthood.
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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.
Answers
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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You live in a megacity. Currently, the city is experiencing a strain on the services provided to citizens. An urban development committee has been formed to discuss the creation of a “new city.” As a concerned citizen, you plan to attend the public hearing to discuss the pros and cons of this new city. To prepare your comments, answer the following questions.
What are TWO opportunities that can arise from rapid urbanization?
What are TWO problems that can arise from rapid urbanization?
Cite examples of cities that have experienced positive and negative aspects of urbanization.
If you could offer recommendations to the developers for making the new city more sustainable, what would you suggest, and why?
Answers
Answer: A
Explanation:
How should people get the resources they need
How would Mahommah baquaqua answer this
Answers
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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hello I'm looking for someone who will do my edge projects/essays, and I will pay you !!! so please shoot me with your offers! these are junior/senior classes!
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The languages as a human invention theory contends that language started when Adam invented names for all creatures. TRUE OR FALSE
Answers
Method of initial rates
Answers
The method of initial rates is used to derive rate laws in the concept of initial rates. It measures the initial rate of reactions, so it gets its name, initial rates.
What is the initial rate?The instantaneous rate at the beginning of a reaction, or when t = 0, is known as the initial rate of the reaction.
The beginning rate is equal to the slope of the reactant concentration versus the time curve at time zero, which is negative.
Therefore, a frequent way of determining rate laws is the concept of the initial rates. The method entails determining a reaction's beginning rate, as its name suggests.
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The complete question is given below:
What are the methods of initial rates?
The frequency of a recessive allele in a population is 40%. What variable in the Hardy Weinberg equations does the
40% refer to? Why?
Answers
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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When Rob and Danielle got married, they invited 200 people. Eighty
percent of the invitees sent back the RSVP card. Ninety percent of the
people who sent in an RSVP said they would attend. When the wedding
day arrived, 7 people who had responded yes did not show up, but half
of the people who had responded no did show up. One-fourth of the
people who had not sent in an RSVP showed up. They had chairs for
150 people. Were they able to accommodate everyone?
Answers
137 + 8 + 10 = 155 attendees would be there in total.
What does "accommodate" mean?They granted me a loan when I requested additional funds. He frequently altered his plans to please his clientele. To meet the unique needs of older inhabitants, new facilities are being provided.
160 of the 200 invited visitors, or 80%, responded.
90% of RSVPs indicated attendance, thus 144 persons are anticipated.
However, only 137 persons actually attended because 7 of the "yes" respondents did not show up.
Next, let's calculate the number of unexpected attendees:
50% of those who responded "no" attended = 0.5 x (160 - 144) = 8 people
1/4 of those who did not RSVP showed up = 0.25 x (200 - 160) = 10 people.
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Reciprocity is a property of human language, not shared by any other animal communication system. TRUE OR FLASE^ help
Answers
Answer: true I think
Explanation: mere guess
The writing system that was invented for Cherokee in the early nineteenth century is an example of logographic writing. True or False.
Answers
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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