what is obsidian, and how was it incorporated into mesoamerican culture

Answers

Answer 1

Final answer:

Obsidian, or volcanic glass, is an igneous rock critical in Mesoamerican culture for making sharply edged tools and ceremonial items. It played a significant role in trade and cultural practices, demonstrating the advanced techniques and extensive trade networks of civilizations like the Olmec and Aztec.

Explanation:

Obsidian, also known as volcanic glass, is an igneous rock that forms from the rapid cooling of high-viscosity lava which prevents the formation of crystals. It is characterized by a glassy texture and can be black or light-colored despite its felsic chemistry, creating a paradox since felsic rocks are typically light-colored. Obsidian's conchoidal fracture allows it to break with exceedingly sharp edges, making it ideal for creating tools and weapons.

In Mesoamerican culture, obsidian was a highly valued resource traded across long distances. It was used to create a variety of objects, including extremely sharp tools, weapons, carved mirrors, and even ceremonial items. The material’s critical importance is evident in the fact that sites like Çatalhöyük thrived partly due to the trade of obsidian, showing it was part of sophisticated trade networks since the dawn of civilization. Mesoamerican cultures like the Olmec and Aztec incorporated obsidian into their trade, art, and cultural practices, underscoring its significance in daily and ritual life. This trade helped to spread cultural ideas, such as religious practices and artwork, throughout the Mesoamerican region.

Obsidian artifacts such as the tools and ceremonial objects made from it serve as evidence of the extensive trade networks and the cultural importance of the material in ancient Mesoamerican societies. Obsidian remains a distinctive symbol and material artifact of these civilizations, reflecting the advanced technical and trading capabilities they possessed.


Related Questions

Which of these political systems would have a "supreme leader"?

A. socialist
B. indirect democracy
C. federalist
D. dictatorship

Answers

the answer is D. dictatorship

Answer:

Dictatorship is a type of political system which would have a “supreme leader”.

Explanation:

Dictatorship can be defined as the form of autocratic political system in which a single leader or group of leader rule people. In present time, dictatorship refers to the system of governance in which a person (usually the military officer) rules with the help of power by ignoring the existing rules.

Dictatorship is the government of a person who has not gained political power by legal or drafted ways but as a result of the rule of succession. One who has absolute sovereignty that is not only the entire political power arises from the resolve of the same but unlimited in terms of scope and time and not responsible for any other authority and it is used in an uncontrolled manner.

The great compromise and the three-fifths compromise both dealt with

Answers

Answer: representation of states in Congress

Explanation:

Which early river valley civilizations are marked with the letters A and B on this map?

Choose the two correct answers.
A is China
A is Egypt
A is Indus Valley
A is Mesopotamia
B is China
B is Egypt
B is Indus Valley
B is Mesopotamia

Answers

Answer:

A is Egypt  and  B is Mesopotamia

Explanation:

Along with ancient Egypt and Mesopotamia it was one of three early civilizations of the region comprising North Africa, West Asia and South Asia, and of the three, the most widespread, its sites spanning an area stretching from northeast Afghanistan, through much of Pakistan, and into western and northwestern India.

Final answer:

The early river valley civilization marked with letter A on the map is China, while the civilization marked with B is Egypt.

Explanation:

Based on the information provided and the historical context of early river valley civilizations, we can identify the civilizations marked with letters A and B on the map. Letter A corresponds to the civilization that emerged along China's Yellow River, which is known for the Xia, Shang, and Zhou Dynasties.

Therefore, the correct answer is A is China. As for letter B, considering the geographical context and the reference to the Fertile Crescent and the Nile River, it corresponds to the civilization of ancient Egypt.

Consequently, the right answer would be B is Egypt.

The American colonists believed they had the same rights of ______ subjects.

Answers

what are the choices?

Answer:

The American colonists believed they had the same rights of British subjects.

Explanation:

Americans colonists were under the authoritarian English rulers. The declaration proclaims that Americans have the same rights as the Englishmen do.

It also clearly states that all are equal under God’s will. Americans were asked to pay heavy taxes and their freedom speech was curbed during the British rule. They were given no say in the parliament.

This paved way for the end of British government and the peasants rose in a huge protest which lead to American Independence.

Another name for the country of Myanmar is __________. A. Algeria B. Burma C. Ceylon D. Malaysia Please select the best answer from the choices provided. A B C D

Answers

Myanmar is also known as B. Burma

Answer:

Option B.

Explanation:

Burma, is the right answer.

Myanmar (previously Burma) is a Southeast Asian country comprising of more than a hundred ethnic societies, adjoining with the territory of India, China, Bangladesh, Thailand and Laos. Yangon (formerly Rangoon) was the largest city of Burma or Myanmar. Since 1997, Myanmar has been an active member of the ASEAN.


(YOU WILL GET BRAINLIEST)


Which of the following reflects the goal of a union?

improving productivity and profits for employers

lowering prices for consumers improving working conditions,

wages and benefits of employees



An auto shop owner buys a new sliding garage door. This is an example of a(n)

a. variable cost
b. marginal cost
c. fixed cost
d. opportunity cost


Comparative advantage argues that above all else, what leads to increased global production?

a. lack of regulations
b. supply and demand
c. elasticity of demand
d. specialization

Answers

Answer:

The answers are,

1. wages and benefits of employees

2. d. opportunity cost

3. d. specialization

Explanation:

Unions are formed to represent the interests of employees and for their job security and benefits.

The best answer is Opportunity cost as the others are related with the production. and fixed cost is a cost that you incur each month that does not change with the output.

Specialization leads to lower costs in production and because of that, lower opportunity costs.

If you were an Egyptian priest living in the year 2500 BCE, which of the following actions would you probably NOT take?

A.
studying Greek building techniques
B.
writing in hieroglyphics
C.
helping construct a pyramid
D.
celebrating a pharaoh's conquests with poetry

Answers

Answer:

c

Explanation:

A priest was classed as a higher or as close to royalty as possible. This is because they were considered direct lines to the gods themselves.

20 POINTS! PLEASE HELP!

Question:

How did the Panama Canal help the U.S. become a world power?

(fyi: please don't google this question, since I've already done it myself and found some answers already... I just need more reasons and evidence as to how.)

Answers

Answer:

I believe it opened up various new trading opportunities.. I do not know a whole lot but I do know it took about 10 years from 1904 to 1914 and in 1977 the US signed a Peace Treaty with Panama

Explanation:

Answer:

It allowed easier trade routes instead of ships having to cross the entire Southern hemisphere. But it also showed off the wealth and architectural skill of the United States.


6.Ancient Athenians served as a model for Western societies because they believed in-

A. physical fitness for all citizens

B. citizens determining before individual interests

C. military service for all citizens

D. religious training before artistic interests​

Answers

B) Citizens determining before individual interest

Ancient Athenians served as a model for Western societies because they believed in:

B. citizens determining before individual interests

The city of Greece is considered the origin of democracy as they were the first recorded city--state to begin democracy, where the power to decide things were given to the citizens.

As a result of this, they served as a model to Western societies because of their inclusion of citizens in the decision making process.

Therefore, the correct answer is option B

Read more here:

https://brainly.com/question/24018783

The Pacific Railroad Act of 1862

established a competition to see which of two companies would build the line.

called for two different transcontinental routes to be built at the same time.

called for two companies to build the line from two different directions.

Answers

Answer:

called for two companies to build the line from two different directions.

Explanation:

The correct answer is C) called for two companies to build the line from two different directions.

The Pacific Railroad Act of 1862 called for two companies to build the line from two different directions.

We ate talking about the Transcontinental Railroad. The Pacific Railroad Act of 1862 designated the Central Pacific Company and the Union Pacific to built the railroads that connected the East part of the country with the Pacific West. The construction lasted seven years and connected Sacramento, California with Omaha Nebraska. The works were done on May 10, 1869, when both railroads connected in Promontory, Utah.

Question 20
Why did the United States enact the Northwest Ordinance and try to quickly expand into the Northwest Territory after gaining control of it?
A
The southern states wanted to open new lands for cotton cultivation.

B
The southern states wanted to force American Indians to resettle there.

C
The government wanted to secure the land after prospectors discovered gold.

D
The government wanted to sell the land and use the profits to pay its war debts.

Answers

Answer:

A

Explanation:

i just learned that

Answer:

Option C  The government wanted to secure the land after prospectors discovered gold.

Explanation:

The Northwest Ordinance was a treaty by which the new territories could be admitted to the United States. It came into play after the need to abolish slavery in all its forms. In addition, it was done by the government to encourage westward expansion. This westward expansion was important especially after the discovery of gold in the land. Thus, the economic prospects could be uncovered from the treaty.

In addition to rice, what two other grains are grown in abundance in East Asia?


- barley

- rye

- oats

- wheat

- maize

Answers

Answer: Wheat and Maize.

FIRST ANSWER GETS BRAINLIEST
What happened as a result of Japan's imperialism in the late nineteenth and early twentieth centuries?

•It fought a war with China

•A wave of nationalism swept through the country

•It acquired three territories by 1910.

•all of the above

Answers

Answer:

All of the above.

Explanation:

I just took a test on it and that was the answer to it.

Japan developed a cutting-edge industrial network. They sought greater influence and access to more resources in an effort to compete with other global powers. They eventually developed into the strongest military force in Asia and a global superpower. Their government's pride sparked two wars that they ultimately won.

What happened to Japan in the 20th century?

A result of Japan's imperialism in the late nineteenth and early twentieth centuries was all of the above. The correct option is D.

Japan's economy changed from being mostly agrarian with a minor industrial sector at the beginning of the 20th century to becoming one of the world's wealthiest countries after World War II and transitioning to mass production, mass consumption economy.

Power was restored to the imperial palace after the end of the war under the newly minted Emperor Meiji. Major political, economic, and social changes that took place during a spectacular 50-year period were the catalyst for Japan's modernization and westernization.

Thus, the ideal selection is option D.

Learn more about Japan's imperialism here:

https://brainly.com/question/9403259

#SPJ5

What powers did the constitution grant to the judicial branch and the supreme court?

Answers

Answer: Well  the answer is the Supreme Court’s main job is to decide if laws are constitutional.

Answer:

The U.S. Constitution

Explanation:

The Question was this for me. What created, defined, and granted the judicial branch its power?

What was the result of the battle of tippecanoe?

A) The Native American movement gained control of Indiana.

B) The Native American movement defeated state militias.

C) The Native American gained support in the south.

D) The Native American movement lost some of its power.

Answers

Answer:

D) The Native American movement lost some of its power.

Explanation:

The Native American movement lost some of its power. The victory gained by Henry Harrison broke Tecumseh’s power, ending the threat from the side of Indian confederation, although did not become the end of Indian resistance to U.S. expansion into the Ohio Valley.

Having achieved his goal - the expulsion of the Indians from Prophetstown - Harrison declared a decisive victory. But some contemporaries of Harrison, as well as some subsequent historians, expressed doubts about this outcome of the battle. The historian Alfred Cave noted that in none of the modern reports from Native American agents, traders and government officials about the consequences of Tippecanoe one can find confirmation that Harrison won a decisive victory. The defeat was a failure for the Tecumseh Confederation, but the Indians soon restored Prophetstown, and, in fact, border violence increased after the battle.

30 POINTS PLEASE HELP!
Do NOT answer just for POINTS

Hinduism, Buddhism, Islam, Judaism and Christianity

describe each religions belief or tradition from the different religions and use at least 2-5 sentences explaining the belief or tradition of each religion differently

(You have to explain them differently not 2-5 sentences on the hole thing)

Answers

Answer:

Hinduism: believes in karma, reincarnation, and that a life of devotion and honor is a path to salvation and enlightenment. Hinduism us an Idian religion. Has a caste system with Brahmin at the top, to Kshatriya, Vaishya, and Shudra at the bottom.

Buddhism: originated in ancient India. Buddhism is a path of practice and spiritual development leading to Insight into the true nature of reality. The Buddha taught how to understand life.

Islam: Is a monotheistic reliogion, which means they believe there is only one God. The founder was Muhammad. Belives Allah is the one and only God.

Judaism: The Jewish religion. Is Monothestic. There is only one God, who wants people to do what is right.

Christianity: Monotheistic, only believes in one God and Jesus. Believes in God the Father, Jesus the Son, and the Holy Spirit. Based on birth, death, resurrection, and the teaching of Jesus Christ.

Buddhism: Founded by Siddhartha Gautama, is based on the belief that the world is full of suffering. Similar to Hinduism, there is also a caste system, but in this case is in coherence with enlightenment, with those who have reached Nirvana, or enlightenment, the Buddha.

Which philosopher is often associated with the unalienable rights expressed in the US Declaration of Independence?
A
Thomas Aquinas

B
Emmanuel Kant

C
René Descartes

D
John Locke

Answers

Answer:

The answer is C: René Descartes.

Two important resources for the court in making this decision are the state and federal _______ , which outline the powers, and limits to those powers, of the state and federal governments.a)Constitutions

Answers

Answer:

constitutions

Explanation:

According to my research on different political requirements, I can say that based on the information provided within the question the term being described here are constitutions. This is a document of all the fundamental principles and precedents that constitute the legality of politics, organizations or other types of entities, as well as determining the rules and regulations for the entity.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

how did the scientific revolution change the course in history ​

Answers

Answer: The Scientific Revolution change the course in History because it was a series of events in Europe, heavily influenced by ideas and inventions from the rest of the world. It was what led to the establishment of several modern sciences.

(HELP ME!)
Which statement describes a consequence of the rise of the trusts during the late 19th century?

Answers

Answer:

D

Explanation:

i just learned this

God bless ya :3

A lack of competition in the market led to widespread unemployment, which hurt workers is the statement describes a consequence of the rise of the trusts during the late 19th century. Thus, option (d) is correct.

What is unemployment?

The term unemployment refers to the person are not occupied in job activity. The person is searching for job with the basis of qualification, experience, and knowledge basis. Unemployment is the drawback of the economy system. There are four main parts of the unemployment are frictional, seasonal, cyclical, and structural.

During the period of the 19th century, was there are the so many consequences are the rise are the trusts. A market are the so many companies and the brand are the sale of the product. But, the one reason is the lack of competition in the market are the spread of the unemployment generate. The technology is another drawback.

Therefore, option (d) is correct.

Learn more about on unemployment, here:

https://brainly.com/question/14227610

#SPJ2

Your question is incomplete, but most probably the full question was.

A. A lack of competition in the market led to price fixing, which hurt consumers.B. Singular control of an industry led to better factory conditions, which helped workers.C. Singular control of a resource led to more innovative products, which helped consumers.D. A lack of competition in the market led to widespread unemployment, which hurt workers.

In the Maori myth, the children try to separate their parents. Which evidence illustrates the point that the Maori understand the importance of patience and hard work?

Answers

Answer:

The children fail at first, but work together to separate their parents.

Explanation:

Answer:

Explanation:

The Maori myth is a native New Zealand myth that explains the creation of the world through the primal couple and all-fathers Rangi and Papa. Their children, once discuss about living in the lights and conclude that for that purpose they have to separate their parents. After several tries, Tane, gods of forest and birds accomplishes the goal. In that sense, they understood the importance of patience and hard work since even after failure and failure they continued trying to reach the objective until they reached it, eventually.

What mountain range extends from British Columbia to New Mexico?


Sierra Nevada


Appalachian Mountains


Rocky Mountains


Cascade Range

Answers

The Answer is Rocky Mountains

What happened to the slave trade after 1800 1820?

Answers

Answer:

It was abandoned because the Americas had enough pop. of African Americans already, and it was self-sufficient.

Explanation:

What did many northerners like James Pike and Carl Schurz come to believe about race and reconstruction by the mid-1870s?

Answers

Answer:

That all races are considered equal.

For the most part, the delegates to the Constitutional Convention were _____. a. ordinary farmers and merchants. b. from the best-educated and wealthiest classes. c. representative of the population as a whole. d. members of the Anti-Federalist group. e. of Native American origin.

Answers

Answer:

b. from the best-educated and wealthiest classes.

Explanation:

The Constitutional Convention delegates had mostly young and experienced delegates, they were mostly 42 years old and some of them were in their 30s. Most of them were graduated from colleges like Princeton and British Universities, which meant they were best-educated and were from the wealthiest classes of the society.

Why did President Obama sign the 2014 farm bill? Select one:
a. He wanted the support of farm states for his reelection bid.
b. It was almost exactly the bill he wanted.
c. It was close to the bill he wanted, with a few exceptions.
d. He recognized he had no chance of getting a better farm bill.
e. None of these answers is correct.

Answers

Answer:

Option D.

Explanation:

He recognized he had no chance of getting a better farm bill, is the right answer.

The farm bill in the United States is the principal agricultural and meals management tool of the national government. The large omnibus bill is relinquished every five years by the Congress of the United States. This bill deals with both agriculture and all other matters under the purview of the Department of Agriculture in the United States. President Obama signed the farm bill for he recognized he had no chance of getting a better farm bill.

Final answer:

President Obama signed the 2014 farm bill because it was close to what he wanted. Despite some disagreements, the bill contained significant reforms and cost savings, meeting many of Obama's objectives, which likely influenced his decision.

Explanation:

President Obama signed the 2014 farm bill primarily because it was close to the bill he wanted, with a few exceptions. The farm bill brought significant reforms and cost savings in the agriculture world. It cut federal crop insurance subsidies and reduced the food stamp program, an aspect Obama might not have fully agreed with. However, the bill also included some of Obama's objectives, like aid for rural economies and funds for farmers markets. Hence, even though the bill was not perfect, the components that matched his goals likely outweighed the parts that did not.

Learn more about 2014 Farm Bill here:

https://brainly.com/question/32859047

#SPJ6

What type of government does North Korea have?

A. parliamentary republic

B. constitutional monarchy

C. totalitarian dictatorship

D. presidential republic

Answers

Answer:

C. Totalitarian Dictatorship

Explanation:

C would be your answer!!

Therefore, when the Spanish took a number of Native Americans as prisoners on Hispaniola, Columbus saw an opportunity for profit. In 1496, he sent 300 of these prisoners to Spain, to be sold as slaves.
True / False.

Answers

Answer:

¿In 1496 Columbus sent 300 prisoners on Hispaniola to Spain, to be sold as slaves?

R/ True

Explanation:

This statement is true, but this venture doesn't result very well for Columbus. The way slavery was legal in Spain. Ransom includes the premise that in war, someone can be traded as a slave but free after the payment of the ransom (prisoner of war).

The Native Americans prisoners on Hispaniola doesn't have this attribute and was send back. King Fernando and Queen Isabel decide this and erase the dreamed venture of Columbus in this aspect.

Which plantation crop required slave labor?

A. Tobacco

B. Corn

C. Wheat

D. Potatoes

Answers

A:Tobacco (tobacco cotton and sugar were main crops grown for trade)
The right answer is Tobacco

ESSAY: GOD'S FAITHFULNESS
Here is your goal for this assignment:

Write an essay exploring God's faithfulness in your own life circumstances

Write a paper of no less than 125 words on how God has been faithful to you. Explain how He has met your needs just as He met David's needs. Tell what the specific incident was, how God showed his faithfulness, and how you've grown in your Christian walk because of the experience.

Answers

Answer:

Exodus 34:6 Then the LORD passed by in front of him and proclaimed, “The LORD, the LORD God, compassionate and gracious, slow to anger, and abounding in loving kindness and truth; 1 Corinthians 1:9 God is faithful, by whom you were called into the fellowship of his Son, Jesus Christ our Lord.

Exodus 34:6 Then the LORD passed by in front of him and proclaimed, “The LORD, the LORD God, compassionate and gracious, slow to anger, and abounding in loving kindness and truth; 1 Corinthians 1:9 God is faithful, by whom you were called into the fellowship of his Son, Jesus Christ our Lord. When you may feel that life is unfair, be reminded that God is a provider. Your needs are being met. You may not have everything you want, but you have everything you need. Trusting God to provide for your needs when you don’t see a way develops a stronger dependence on God, and spiritual maturity. I invite you to pray to God for wisdom and surrender your anxieties to Him. Surrendering is a process that acknowledges God’s sovereignty and control.

How is God faithful to your own life?

The faithfulness of God is demonstrated by sacrificing His one and only Son, Jesus, for those who come to Him. Even if we don't value ourselves — He still values each and every living soul as worthy of being redeemed and set free from the power of sin. No. 3) God's faithfulness protects us.

What is God's faithfulness to us?

1 John 1:9 If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness. God's faithfulness means he will always forgive my sins. There is nothing I can do that will ever separate me from his love and grace for me.

Learn more about God's faithfulness at

https://brainly.com/question/17256705

#SPJ2

Other Questions
A TV costs $125.67 with a discount of 15% and 8.5% tax. What is the total that you will have to pay? Is this statement true or false?To find the mode of a list of numbers, arrange the numbers from smallest to largestSelect the correct answer.falsetrue Convert 2.0 M of Phenobarbital sodium (MW: 254 g/mole) solution in water into % w/v and ratio strengths. Which of the following statements is not true about mRNA?a. prokaryotic mRNA may contain multiple structural genes on the same transcript, known as polycistronic mRNA.b. eukaryotes only transcribe one gene at a time on mRNA, called monocistronic mRNA.c. some eukaryotes are capable of having polycistronic mRNA.d. eukaryotes almost always produce polycistronic mRNA.e. the genes for metabolic pathways in bacteria are typically located close together and transcribed on one mRNA. Anything you know about project c with Martin Luther king The tensile strength of silicone rubber is thought to be a function of curing temperature. A study was carried out in which samples of 12 specimens of the rubber were prepared using curing temperatures of 20C and 45C. The data below show the tensile strength values in megapascals.(20 C) 2.07 2.14 2.22 2.03 2.21 2.03 2.05 2.18 2.09 2.14 2.11 2.05(45 C) 2.52 2.15 2.49 2.03 2.37 2.05 1.99 2.42 2.08 2.42 2.29 2.01(a) Show the dot plot of the data with both low and high temperature tensile strength value(b) Compute sample mean tensile strength for both samples In the Solow growth model with population growth, but no technological progress, the steady-state amount of investment can be thought of as a break-even amount of investment because: the quantity of investment just equals the amount of: A) output needed to achieve the maximum level of consumption per worker. B) capital needed to replace depreciated capital and to equip new workers. C) saving needed to achieve the maximum level of output per worker. D) output needed to make the capital per worker ratio equal to the marginal product of capital. Describe how an unbounded solution occurs You have been working on a new, strong, lightweight ceramic which will be used to replace steel bearing balls. One cubic meter of the steel alloy currently in use has a mass of 8.08 10^3 kg, whereas a cubic meter of your new material has a mass of 3.14 10^3 kg. If the balls currently in use have a radius of 1.9 cm and for this application to keep balls of the same mass instead of the same size, what would the radius replacement ball of the new alloy be? Which wonder was constructed in the city that was thecenter of Hellenistic culture?O the pharosO the hanging gardensO the statue of ZeusO the pyramids While carbohydrates and proteins are necessary for a healthy diet, fats should be avoided whenever possible.a. Trueb. False A highly concentrated ammonia solution is found to have a pH of 12.03. What is the hydroxide concentration, [OH-(aq)] in mol L-1? Ik it kinda blurry but its asking which option best completes the chart? a. faster response to local issueb. minimal conflict among parts of government.c. less potential for abuse of power.d. more efficiency in response to national issues unitary- united national idenityconfederal- more citizen involvement federal- ? What is the total resistance of a parallel circuit that has two loads? Load one has a resistance of 10 ohms. Load two has a resistance of 24 ohms. (YOU MUST SHOW YOUR WORK)!! Karen and Jay need a larger home. They have two large dogs and a baby on the way. One day in the real estate section, they see their dream home. The couple view the home that very day, make an offer and it's accepted. There's only one problem: They haven't even put their home on the market. Which type of loan gives Karen and Jay their best option of paying two mortgages until their current home sells?a. A Participation Mortgageb. A Bridge Loanc. A Sale-Leasebackd. A Contract for Deed Why does a lower concentration of dissolved particles decrease the reaction rate? A. It does not. A high concentration decreases reaction rate. B. When there are less dissolved particles, less collisions take place. C. Concentration is measured inversely. A low concentration indicates a higher portion of dissolved reactant particles. D. The dissolved reactant cannot collide with enough energy to react because it is moving slowly when it is dissolved in a solution. Which is the frequency of the wave shown? Methods: Part A: Preparation of Buffers Make two buffers starting with solid material, which is the most common way to make buffers. You will be given a desired pH, and your task is to prepare 100 mL of two appropriate buffers at a concentration of 0.10 M. One of the buffers will be a phosphate buffer (pH 7.0) and the other will be a Tris buffer (pH 8.0). 1. Calculate the weight of the buffer you would need to make 100 mL of a 0.10 M solution. Weigh out the correct amount and dissolve in 50 mL water. You will need the following compound molecular weights: Na2HPO4 (141.96 g/mol), NaH2PO4 (119.96 g/mol), and Tris base (121.1 g/mol). A boy uses a slingshot to launch a pebble straight up into the air. The pebble reaches a height of 37.0 m above the launch point 2.3 seconds later. Assume air resistance is negligible (a) What was the pebble's initial speed (just after leaving the slingshot)? m/s (b) How much time did it take for the pebble to first reach a height of 18.5 m above its launch point? s What should a graph of the velocity vs time look like if it shows an object moving toward the motion detector at a constant speed? a. An upwards curved parabola.b. A downwards curved parabola.c. A straight line with zero slope.d. A straight line sloping upward.