an unknown mineral scratches a copper coin, but does not scratch a pocket knife blade. of the list below, which is the most likely identity for this sample?

Answers

Answer 1

To determine the most likely identity of the unknown mineral based on its scratching behavior, we need to consider the relative hardness of different minerals. Hardness is a measure of a mineral's resistance to scratching or being scratched by other substances.

Based on the information provided, we can infer that the unknown mineral is harder than copper (which is relatively soft) since it can scratch a copper coin. However, it is not harder than the pocket knife blade since it cannot scratch it.

The most commonly used scale to assess mineral hardness is the Mohs scale, which ranks minerals from 1 (softest) to 10 (hardest). Given the scenario, the most likely identity for the unknown mineral would be a mineral with a hardness between that of copper (2.5-3 on the Mohs scale) and the pocket knife blade (around 5-6 on the Mohs scale).

Considering this, a possible identity for the unknown mineral could be a mineral with a hardness around 4 on the Mohs scale, such as fluorite or orthoclase feldspar. However, without further information or conducting additional tests, it is challenging to determine the exact identity of the mineral with certainty.

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Related Questions

Angela is your partner for a presentation, and you are getting worried. Angela hunches her shoulders and speaks in a whisper. She barely looks at you when the two of you are working on your project. Explain how you would help Angela boost her self-confidence so that the two of you do well on your presentation. pls help

Answers

Answer: Don't Tell Them They're Wrong, Rely On Evidence, Don't Say You're Envious Of Them

Don't Say You're Envious Of Them.

Help Them Find The Roots Of Their Insecurity.  

Reassure Constructively.

Give Them An Object To Come Back To.

Realize That Even High Achievers Feel Like This.

Explanation: Just tell them that just to be her self everybody is different.

hint

do not plagiarism this because i used this word per word for mine cause i have the exact same assignment

Answer

I think to boost her self confidence you need to start talking to her saying she's doing a great job and to keep up her hard work and if she is struggling help her instead of ignoring her.

6. Which regions of the world get most of their protein from meat?

Answers

Answer:

Fish is one of the major sources of animal protein around the world, providing about 20 percent of the animal protein consumed. It's the main source of animal protein in many developing countries, providing over 50 percent of the animal protein consumed in some areas, according to the Food and Agriculture Organization.

Explanation:

A wire is 30 inches long is bent into a triangle with sides measuring g 6 inches 11 inches 13 inches find the measure of the largest angle

Answers

Answer:

Largest angle is 94.22°

Explanation:

The sides of the triangle are given as 6 inches, 11 inches, 13 inches.

Now, we can find the respective interior angles of the triangle using cosine rule.

Thus, for the angle opposite 6 inches, let's label it A. Thus;

6² = 11² + 13² - 2(11 × 13)cos A

36 = 121 + 169 - 286cosA

36 = 290 - 286cos A

290 - 36 = 286cosA

cosA = 254/286

A = cos^(-1)0.8881

A = 27.36°

Similarly;

11² = 6² + 13² - 2(6 × 13)cos B

121 = 36 + 169 - 156cosB

121 = 205 - 156cos B

205 - 121 = 156cosB

cosB = 84/156

B = cos^(-1)0.5385

B = 57.42°

Sum of angles in a triangle is 180°

Thus;

C = 180 - (27.36 + 58.42)

C = 94.22°

Thus,largest angle is 94.22°

The sum of the internal angle of the triangle is 180 degrees. Then the measure of the largest angle is 95.22°.

What is trigonometry?

Trigonometry deals with the relationship between the sides and angles of a triangle.

A wire is 30 inches long and is bent into a triangle with sides measuring  6 inches 11 inches 13 inches find the measure of the largest angle.

Then we know that the cosine rule is given as

[tex]\rm cos\ C = \dfrac{a^2+b^2-c^2}{2ab}[/tex]

Let the angle of the triangle be A, B, and C.

Then the first angle A will be

[tex]\begin{aligned} cos \ A &= \dfrac{6^2+11^2-13^2}{2*6*11}\\\\cos \ A&= \dfrac{36 + 121 - 169}{132}\\\\ A &= 95.22^o \end{aligned}[/tex]

And we know that the sum of the internal angle of the triangle is 180 degrees.

     ∠A + ∠B + ∠C = 180°

95.22° + ∠B + ∠C = 180°

              ∠B + ∠C = 84.78°

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This Question Should Be Extremely Easy.

The Taurus mountains are found in-

A. Saudi-Arabia

B. Iran

C. Turkey

D. Morocco

Answers

Answer:

C. Turkey

Explanation:

Which is a complete sentence?
01. Under the table in the library.
2. I enjoy playing the piano.
03. Keeping away from the icy spots.
04. Dan and Kristen both in charge

please anyone help me I need the answer right now Plzzzz​

Answers

Answer:

The complete sentence is :2. I enjoy Playing the Piano


What is the process and material that forms a protective seal that hardens around an
organism?
What type of fossil fuel is created by several layers of carbonized plant materials

Answers

Answer:

The process and material that forms a protective seal that hardens around an  organism is explained below in complete details.

Explanation:

Arthropods, invertebrates with exoskeletons, use extremely tough shell material such as cuticle as protection. cuticle layers are formed through secretion from the epidermis, continuously building up over time. therefore, wounds are meant to be absorbed by the exoskeletons and prevent damage to the softer inner tissues. the organism does not heal these wounds but continuously bolsters the protective exoskeletons through secretion.

Should a stronger country today be able to tell a weaker country what to do? (Six sentences long plz otherwise I won't get credit!)

Answers

I do not believe that a strong nation should be able to boss around weaker nations. This is just wrong in that a nation should be free to decide what it wants to do. A strong nation can assist them in developing. How ever they should not rule them. At that point that weaker nation will be stripped by of their sovereignty. This is not that times of Empires.

Which came first, the Chicken or the Egg?​

Answers

Egg bro of course :)

Eggs come from chickens and chickens come from eggs: that’s the basis of this ancient riddle. But eggs – which are just female sex cells – evolved more than a billion years ago, whereas chickens have been around for just 10,000 years. So the riddle is easily solved…or is it?

Taken at face value, there is no doubt that the egg came before the chicken. We tend to think of eggs as the shelled orbs laid by birds from which their chicks hatch – unless we eat them first. But all sexually reproducing species make eggs (the specialised female sex cells). That’s 99.99 per cent of all eukaryotic life – meaning organisms that have cells with a nucleus, so all animals and plants, and everything but the simplest life forms.

We don’t know for sure when sex evolved but it could have been as much as 2 billion years ago, and certainly more than 1 billion. Even the specialised sort of eggs laid by birds, with their tough outer membrane, evolved more than 300 million years ago.

As for chickens, they came into being much later. They are domesticated animals, so evolved as the result of humans purposefully selecting the least aggressive wild birds and letting them breed. This seems to have happened in several places independently, starting around 10,000 years ago.

The wild ancestor of chickens is generally agreed to be a tropical bird still living in the forests of Southeast Asia called the red junglefowl –  with other junglefowl species possibly adding to the genetic mix. From these origins, humans have carried chickens around the world over the past two millennia or more.

So, eggs dramatically predate chickens. But to be fair to the spirit of the riddle, we should also consider whether a chicken’s egg predates a chicken. As humans consistently chose the tamest red junglefowls and bred them together, the genetic makeup of the resulting birds will have shifted. At some stage during this domestication process the red junglefowl (Gallus gallus) evolved into a new subspecies, Gallus gallus domesticus, AKA the chicken.

In practice, it is impossible to pinpoint the moment when this happened. But in theory, at some point two junglefowl bred and their offspring was genetically different enough from the species of its parents to be classified as a chicken. This chicken would have developed within a junglefowl egg and only produced the very first chicken’s egg on reaching maturity. Looked at this way, the chicken came first.

Mining is particularly important to the economies of many of the low islands of Oceania, as these islands tend to have the most natural resources. Please select the best answer from the choices provided T F

Answers

This would be a True statement

Answer:

False

Explanation:

Right on edge

How many sides does a polygon with a exterior angle of 5 have?

Answers

Answer:

72

Explanation:

Help me out pls.

Piece of infrastructure that connects the Red Sea to the Mediterranean sea

A. Itaipu Dam

B. Aswan High Dam

C. Panama Canal

D. Suez Canal

Answers

Answer:

D. Suez Canal

Hope this helps :)

It’s D the Suez Canal

help !!!
Find all these ......​

Answers

1. Any elevated area, such as mountain or an upland, separated two drainage basin such an elevation is known as a water divide—for example, Indus and the Ganga river. The high mountain or plateaus region where the water of the river flows in two opposite direction.

2. Ganga basin

3. The "origin of the Indus" and "Ganges river" is at "Himalayan Mountains".

4. The Ganga has two main headstreams are Bhagirathi and Alaknanda. They both meet to form the Ganga at Devprayag.

5. In Tibet, the river carries a smaller volume of water and less silt, as it is a cold and dry area. Hence, the river carries a large volume of water and a considerable amount of silt.

6. River Narmada and Tapi are the two Peninsular rivers which flow through trough.

7. Rivers and lakes are of a great value to human beings. They help to develop hydel power, provide water for irrigation, drinking, industries and they help to develop fisheries. They will enhance natural beauty and help in the development of tourism and provide recreation.

Hope this helped!

Answer:

All the above answers from the first response is correct. Hope you have a wonderful day.

What are the 3 types of plate motion? Explain each one

Answers

Answer:

There are three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries. ... A divergent boundary occurs when two tectonic plates move away from each other.

Answer:

i really dont understand

Explanation:

The country of Canada is located ____ of the New England states.

north
south
east

Answers

Answer:

North

Explanation:

East of the New England states in in the ocean and South is near Pennsylvania and Virginia

North. East of the new England states is located around Pennsylvania

Complete the following terms: (fill in the blanks with the words below)
Waves… Coarse Sand… Feldspar… Trough… Wind… Shoreface
Sediment… Swells…. Quartz… Crest… Wavelength…
A _______________ is the lowest point in a wave.

Answers

Answer:

the answer is Trough

Explanation:

I looked it up

Yeah I’m ok I don’t have

The Taurus mountains are found in-

A. Saudi-Arabia

B. Iran

C. Turkey

D. Morocco

Answers

Answer:

C. Turkey

The Taurus mountains are found in- Turkey

Answer:

C. Turkey

Explanation:

Hope it helps!

name one other process of coastal erosion. Explain how it is likely to have eroded the cliff

Answers

Answer:

abrasion

Explanation:

forgive me if im wrong

7. Which of the following best explains the economic advantage of the type of farm-produced goods
shown in the images?
a. Compared to fresh produce, these packaged agricultural goods significantly increase the gross
national income that is sourced from industrial production and bring financial wealth to farmers
b. Compared to plain milk or fresh fruit, these value-added agricultural goods significantly
increase the price of the farm products sold and increase earnings for farmers
C. Compared to factory-made dairy products and condiments, these preservative-free goods have
a decreased shelf life, which increases the prices of the goods sold
d. Domestication of plants and animals began in the Fertile Crescent and the process diffused as
pastoral nomads migrated to other areas
Domestication of plants and animals began in the Indus River valley and the process diffused to
other areas across trade routes
e

Answers

Answer: B. Compared to plain milk or fresh fruit, these value-added agricultural goods significantly increase the price of the farm products sold and increase earnings for farmers

Explanation:

These value-added agricultural products greatly raise the price of the farm items sold and improve farmer incomes as compared to plain milk or fresh fruit.

What was  economic advantage of the type of farm-produced goods ?

The activity of developing natural resources for economic gain and human sustenance is known as agriculture. It blends innovative production techniques and cutting-edge technologies with the creativity, inventiveness, and expertise required for raising animals and cultivating crops.

Commodities, or basic goods utilised in commerce, such as grain, livestock, dairy, fibre, and raw materials for fuel, are also provided by agriculture to the world economy. For instance, according to The Balance Small Business, fibre is the top crop produced in the United States and is a crucial commodity for the apparel industry.

Shipping is necessary for the import and export of goods, such as agricultural products.techniques as road, rail, and maritime freight. The worldwide supply chain may be impacted by delays in the shipping of agricultural items from a Los Angeles port to China and vice versa.

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Which increased as a result of the Industrial Revolution?
Check all that apply.
u
A. Pollution
B. Travel tirages between cities
C. Population
D. Food prices

Answers

Answer:

a

Explanation:

I believe it is D. Food prices

How do you think the Forest Industry has disrupted the homes of First Nations communities across Canada?

Answers

Answer:

the weather executes us

Explanation:

because it's cold tge water/rain turns into ice and to show

Which of the following is a perceptual region?
Group of answer choices

New England

The Northwest States

The Great White North

the southern hemisphere

Answers

Answer:

New England is the answer

Which two images correctly show how Earth's tilt contributes to uneven heating of Earth's hemispheres?
Earth's Axis
WRC
Equator
Suni
sumir
sunun
Peguator
Earth's plane of orbit
Sun
sunisht
Earth's
Axis
Earth's plane of orbit
PRESSRESERRESTRES
Sun
Sun
ht
B
Earth
su
Earth
sunt
Earth's
Sun
Axis
unleht
Earth's
Axis
Equator
Sun
Earth's plane of orbit
Earth's plane of orbit
Sun
ung
Sun
C
SUURE
Earth
SUM
D
Earth
Sun
Asis
Earth's plane of orbit
Equator
Sun
Earth
E
2021 Edmentum. All rights reserved

Answers

Answer:

Answer is C and E

Explanation:

Option C and E are the two images which correctly show how the Earth's tilt contributes to uneven heating of Earth's hemispheres.

What is Hemisphere?

This is one of the halves of the earth which is divided by the equator and the tilt makes the center of the earth experience more sunlight.

The options C and E depicts this and is why it is chosen as the most appropriate choice.

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Describe how mountains are formed at both convergent plate boundaries and divergent plate boundaries.

Answers

Answer:

Here's a non-copyrighted version of what the last person said :)

Mountain form at convergent plates boundaries, when the tectonic plates shove up against each other it forces the land to rise into mountainous forms as the said plates continue to clash.

in which state did the anti Hindi agitation started​

Answers

Answer:

The Indian state of Tamil Nadu

Explanation:

Just search up the question.

The Anti-Hindi agitations of Tamil Nadu were a series of agitations that happened in the Indian state of Tamil Nadu (formerly Madras State and part of Madras Presidency) during both pre- and post- Independence periods.

1. Which of the following agricultural practices has the most significant long-term environmental impact
in tropical regions?
a. Clearing small patches of land to pasture dairy cows, which decreases water pollution from
runoff
b. Building terraces on sloping land to grow rice, which destabilizes hillsides
C. Burning extensive areas of forested land to create pasture, which decreases biodiversity
d. Burning small areas of forested land for subsistence farming, which increases biodiversity
e. Moving livestock to higher pasture areas in the spring, which leads to soil degradation
Which of the folloin

Answers

Answer:The correct answer is option "Burning extensive areas of forested land to create pasture, which decreases biodiversity".

Explanation:

The missing options of this question are:

A) Clearing small patches of land to pasture dairy cows, which decreases water pollution from runoff.

B) Building terraces on sloping land to grow rice, which destabilizes hillsides.

C) Burning extensive areas of forested land to create pasture, which decreases biodiversity.

D) Moving livestock to higher pasture areas in the spring, which leads to soil degradation.

The correct answer is option C) "Burning extensive areas of forested land to create pasture, which decreases biodiversity".

Tropical regions are rich in forested landscapes, where multiple species of animals and plants live. The agricultural practice that most significant long-term environmental impact is to burn these areas to create pasture. It is estimated that burning forested lands cannot be recovered in least than 28 years, while some areas have permanent damages.

Explanation:

The forest is a home for number of multiple species for their necessities and survival. These regions have high volume of forested landscapes. Different agricultural practices are performed in these areas.

Burning extensively the area of land covered with forest with a view to create pasture results in a decrease in biodiversity and has a significant environmental impact on tropical regions in long term.

Agriculture practices

These areas are burned with a view to create of forest pastures. The practice of burning these areas has the most significant impact on environment in the long run.

Practicing such agricultural practices of burning areas may result in permanent infertility of such areas.

The damages caused by the burning of such areas can result in degradation of land and such land cannot be recovered for a estimated period of 28 years.

Therefore OPTION C "Burning extensive areas of forested land to create pasture, which decreases biodiversity" is correct.

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the map was made using data collect by satellite imaging equipment

which two regions have the coldest land surface temperature according to the map?

a. region 4
b. region 2
c. region 1
d. region 3

it’s multiple choice

Answers

I believe It would be a and c

region 2 and region 3 two regions have the coldest land surface temperature according to the map. Thus options B and D are correct.

What is a map?

A map is a visual depiction of specific features of a location, typically created on a smooth surface. Maps provide straightforward, visible information about the globe. They demonstrate the dimensions and shapes of the world's nations, the locations of its characteristics, and the distances between regions to teach about it.

The region in which the temperature that is present in the thermal waves is low will be the coldest land surface temperature. This will be when the region will not receive enough amount of sunlight. In this region 2 and 3 will be the one.

Therefore, option B and D is the correct option.

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1. Explain how food consumption varies globally. GIVE AN EXAMPLE OF EACH.
ult.
Cultural Preferences
Level of Development
Physical Conditions
EX:
EX:
EX:

Answers

Answer:

what

Explanation:

is the questionn

Help please

_____ happens when gravity moves sediment downhill.

a. Weathering only
b. Mass movement
c. Erosion only
d. Gravity

Answers

Answer:

B

Explanation:

A mass movement denotes a political party or movement which is supported by large segments of a population. Political movements that typically advocate the creation of a mass movement include the ideologies of communism, fascism, and liberalism. Both communists and fascists typically support the creation of mass movements as a means to overthrow a government and create their own government, the mass movement then being used afterwards to protect the government from being overthrown itself; whereas liberals seek mass participation in the state apparatus of representative democracy.

Answer:

B. Mass movement

Explanation:

Gravity can cause erosion and deposition. Gravity makes water and ice move. It also causes rock, soil, snow, or other material to move downhill in a process called mass movement.

Part 1 Answer the following questions. Place your responses in the essay box below for Part 1. What type of map is this? Are there any faults on the map? If so, what types? Around the Salt Lake, what is the geologic age of the area and what type of geologic unit is found there? South of Richfield, what type of rock is most prevalent? Which geologic area or rock is the oldest? Which geologic area or rock is the youngest? Are there any intrusive rocks found in Utah? And where? In the Green River and Price area, what fossil fuel would you expect to find there?

Answers

The type of map represented in the picture is a geological map. Geological maps show features such as soil and rock type and structural features such as faults. There are numerous faults represented on the map The main type observed are thrust faults. The area around Salt Lake is approximately between Quaternary to late Tertiary based on the map. The main geologic unit in this area is composed of alluvial, glacial and lake sediments. Middle Tertiary volcanic rocks can be found south of Richfield. Pre-Cambrian metamorphic (narrow outcrop east of the Great Salt Lake) and igneous rocks are the oldest represented on the map. The youngest rocks are Quaternary salt flats found mainly south-west of the Salt Lake. Intrusive rock outcrops can be found in different areas on the map. Outcrops can be observed southeast of Richfield, south-east of Ceder Clay and North of Lake Powell. Coal is the fossil fuel type present in the Green River and Price area.

Why do you think it is important to be accurate and unbiased
when coming to a conclusion in science and in life ? plz help

Answers

Answer:

here your answer

Explanation:

Two researchers published a paper on how the Internet is a big factor in announcing scientific discoveries but also can mislead the public due to bias and inaccurate reporting.

One thing that is important in reporting discoveries and disseminating information based on science is that it has to be accurate and unbiased. Science is based on experiments that should be both observable, measurable, and repeatable.

When CERN announced the discovery of the possible Higgs particle, they reported it as a 5 sigma discovery. This means that the discovery has a probability of 0.00003% that the result is accidental or due to chance.

Science reporting must be based on facts. Theories, although not yet proven to be science fact, still undergo scrutiny and has a fundamental principle behind it. The Higgs particle was a theory before, and it took the construction of the Large Hadron Collider for it to be discovered.

And even then, the discovery of the Higgs helps establish another theory which is the Standard Model.

There will be dissenting arguments when it comes to scientific research. Some are even on opposite sides such as Loop Quantum Gravity vs. String Theory. But regardless, it will ultimately fall on research being observable, measurable, and repeatable.

Personal beliefs has no room when it comes to science reporting. A recent article touched on how a Wikipedia editor kept deleting references to Global Warming on the Hurricane Sandy page because he personally does not believe in Global Warming

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