cual fue el momento esplendor del uso del carbón

Answers

Answer 1

Answer:

No se sabe muy bien, pero parece que de forma conocida, el carbón mineral empezó a utilizarse como combustible en China, hace unos 2000 años. También se dice que los ingleses conocieron su uso por aquella época y que de ellos aprendieron los romanos. El antiguo mundo no conoció, o no utilizó, el carbón mineral.


Related Questions

If the distance between two places is 1000m and the height between them is 100 m, what is the gradient ?

Answers

The gradient between the two places is 0.1

Gradient (slope) is the ratio of change in vertical distance to change in horizontal distance. It is given by:

Gradient = vertical distance / horizontal distance

Given that the horizontal distance is 1000m and vertical distance (height) is 100 m, hence:

Gradient = vertical distance / horizontal distance

Gradient = 100 m / 1000 m

Gradient = 0.1

The gradient between the two places is 0.1

Find out more at: https://brainly.com/question/13020257

D. Describe Germany’s composition as a federal state.

Answers

At the federal level, the German constitution divides power between the executive branch, the legislative branch, and the judiciary.

What is true of both earthquakes and volcanoes?.

Answers

They are both caused by the movement of tectonic plates

The true  about  earthquakes and volcanoes is that Both earthquakes and volcanoes are caused by the movement of tectonic plates.

Both earthquakes and volcanoes are regarded as a natural disaster, but they have somethings in common.

They are been caused by the movement of tectonic plates, and they can be harmful to the local environment.

They occur in  inland less frequently than in coastal areas.

It should be noted that Most earthquakes are caused by  the movement of magma.

Learn more at;

https://brainly.com/question/248561

PLEASE HELP THIS IS FOR FINALS PLEASE I BEG PLEASE HELP ME

NO LINKS PLEASE

Within the world’s oceans, high salinity values are usually found _________________ coastlines due to _______________________.
a

north of , the lower temperature of the ocean water

b

south of , the higher temperature of the ocean water

c

far from , the lack of an influx of fresh water

d

near to , fresh water deposition

Answers

Answer:

Salinity of seawater

Explanation:

The average salinity of seawater is S = 35 which means that SW is 3.5% salt and 96.5% H2O by weight.

What can you find in the top layer of dense canopies in rainforests? The top layer has that grow to heights of meter(s) or more, which does not allow much sunlight to enter the canopy.

Answers

The canopy of a rainforest is defined as the top layer present 30 meters above the ground, which is made up of the overlapping leaves and branches of the trees.

The top layer of the canopies is known as the emergent layer that consists of a large number of trees and extends in height to all the plants.

What is the canopy of the rainforest?

The long and enormous trees of the rainforest are extended to reach the direct sunlight. The canopy formed due to the overlapping of trees blocks out the sunlight available to the plants present beneath the canopy.

60-90% of the life forms are found in the canopy of the rainforests. It is one of the richest habitats and has biodiversity.

The root system of the rainforests is shallow, and the bark is thin and smooth as the rainforests do not deal with cold weather.

Thus, the canopy reaches a height of more than 30 meters to achieve direct sunlight.

Learn more about the canopy here:

https://brainly.com/question/1561206

5. Why do you think the new cities might have become so independent?

Answers

Answer: I think its because most city's are tired to be dependent on the state or something.

which term defines the distance from crest to crest or from trough to trough in a wave?

Answers

Wavelength is the term that defines the distance from crest to crest or from trough to trough in a wave. The wavelength is the horizontal separation between two consecutive crests or troughs.

What is the time between waves called?

The duration of time it takes for two crests of a certain wavelength to pass a particular location. One wave occurs every six seconds, for example, is a common reference to the wave period.

The structure of a wave The crest is a term used to describe the highest point of a wave. The trough refers to the bottommost area. The distance between two successive crests (or troughs) determines the wave's length or wavelength, and the wave height is the sum of these two height changes from crest to trough.

Learn more about Wavelength here:

https://brainly.com/question/13533093

#SPJ1

The Andaman and Nicobas islands were also badly affected.
Which country owns these islands?

Answers

Answer:in Indian archipelago

Explanation:

Why is this part of a theory called 'continental drift'?

Answers

Answer:

It is called continental drift because the continents move.

Explanation:

Darla uses 3 pink roses and 4 yellow tulips to fill each vases how many flowers does she use

Answers

Answer:

She uses 7 flowers.

Explanation:

Since she has 3 pink roses and 4 yellow tulips all you would need to do is add 3 and 4 together which gives you 7. I hope this answered your question.

Ok so he will use 7 flowers because you have to add.

A summary of astronomy 4 sentences

Answers

Answer:

Astronomy is the study of everything in the universe beyond Earth's atmosphere. That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars . It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles.

Explanation:

Which soil horizon is the least weathered horizon and contains rock that is starting to break down into soil

Answers

Answer:

The C horizon (Subsurface horizon).

Explanation:

The C horizon is a subsurface horizon which is the least weathered horizon; also known as the saprolite.

It is a zone of little or no humus accumulation or soil structure development. and is often composed of loose unconsolidated parent material from which the A and B horizons have formed.

A horizon is a mineral subsurface that is a zone of accumulation, the horizon of the Subsurface horizon.

What exactly is a subsurface horizon?

A horizon is a mineral subsurface horizon that is a zone of accumulation. Clay, salts, and/or iron are common materials that accumulate. Minerals in the B horizon may be undergoing transformations, such as chemical changes to the structure of clay.

The C horizon is a subsurface horizon that is the least weathered; it is also known as the saprolite.

It is a zone with little or no humus accumulation or soil structure development. And is frequently made up of unconsolidated loose parent material from which the A and B horizons have formed.

Therefore, the above statement explains the subsurface horizon.

Learn more about subsurface horizon here:

https://brainly.com/question/2289134

a sand ridge connecting an island to the mainland or to another island is a ________.

Answers

Answer:

Tombolo

Explanation:

A tombolo is defined as a deposition landform by which an island becomes attached to the mainland by a narrow piece of land such as a spit or bar.

volcanoes play an important role in determining climate change. when a volcano erupts it throws out large volumes of ______________ gas and ash into the atmosphere which can influence climatic patterns for years.

Answers

Answer:

Sulfur Dioxide

Hope this helped! :^)

5. If two vertical angles are represented by 2x + 40 and 5x + 25.
what is the value of ?

Answers

Answer:

Vertical angles must be equivalent to each other, so we can set this equation:

2x + 40 = 5x + 25

Solve

15 = 3x

x = 5

I will assume the question is asking for the angle, so we plug in x

5*(5) + 25 = 50

at what location within a glacier is the ice flow the fastest?

Answers

The middle of the glacier is where ice flow is the most quick-witted

What economic activity is performed in the Northern Region of Europe?

Answers

Answer:

Coal,oil and natural gas

Explanation:

The exploitation of oil and natural gas in Northern Europe is a comparative new activity. The highest yields are obtained in the North Sea, with Great Britain and Norway holding the largest shares.

What climate zone are you in if the temperatures are always very warm? Where is this zone located on Earth.

Answers

You are near the equator, which is part of the tropical zone

under what circumstances will the front of a glacier advance, retreat, or remain stationary?

Answers

Answer:

The terminus of a glacier advances if there is more accumulation than ablation, retreats if there is more ablation than accumulation, and remains stationary if accumulation is balanced with ablation.

Explanation:

The U.S. Federal Reserve says problems with the supply chain are threatening to
lengthen the rise in prices of goods and services, which is known by what one-word
term?

Answers

Answer:

Inflation

Explanation:

A supply chain, in the most basic form, is the set of actions necessary by an organization by providing goods or services to customers.

A supply chain is a focus on the main processes necessary to turn raw materials or component components into completed products or services inside our company.

The correct word for the rise in the prices of goods and services is inflation.

This is the correct answer because inflation is measured as the rate at which prices go up over time. Inflation is usually defined as little more than a wide measure of price increases or a rise in the cost of living in a nation.

In economics, inflation is defined as a gradual increase in the price of goods and services in a given economy. When the overall price level rises, each unit of currency buys fewer products and services; as a conclusion, hyperinflation equals a loss of money's buying power.

To know more about inflation, refer to the link below:

https://brainly.com/question/13145806

A scientist collects a core sample from 60 km deep in Earth.

Which characteristic will she most likely observe in this sample?

The sample has high iron content.
The sample is very hot and liquefied.
The sample mainly consists of granite.
The sample is very young.

Answers

Answer : Option C, The sample will mainly consist of granite.

Explanation:

Sample collected from was continental crust (a part crust) as the samples were from 60 km deep. Continental crust ranges from 30 km to 70 km and this layer is mainly includes granite. This continental crusts is mainly responsible for formation of distinct land-forms like continents.
Statement A ,B and D informs us about the state and temperature of metals(iron) in core that is inner most layer of the earth.

Cartographers create a __________ using a mathematical means to present the curved surface of Earth (3D) on a flat surface (2D)

Answers

Answer:

Map Projection

Explanation:

It makes sense because it is what cartographers do.

Hope this helped! :)

The volcano Izalco in El Salvador is a small, steep-sided volcano. What conclusions can be drawn about the characteristics of the lava that formed this volcano?

Answers

Answer:

Izalco is likely a stratovolcano, given its steep slopes. The lava of a stratovolcano is high in silica content and is very viscous (thick). It thus cannot flow very far and often solidifies before reaching a long distance. The volcano continuously erupts and the solidified lava builds on the existing land, forming steep slopes.

how many molecules are there for 0.0089 moles of Ba(NO3)2

Answers

Answer:

11.3 mol Ba(NO₃)₂

Explanation:

You're Welcome ;)

which group best describes the changes that took place after the end of the great war?

Group A:
• Women adopted shorter, less restrictive clothes.
• Musicians experimented with new forms.
• Church attendance declined in Europe.
• People flocked to the movies.

Groups B:
• Women adopted more somber clothes.
• Classical music enjoyed a great resurgence.
• Church attendance soared in Europe.
• People used their leisure time to get fit.

Answers

Answer:

A

Explanation: I HOPE THIS HELPS!!!

Answer:

group A

hope that helps

what is the northernmost capital city in the continental u.s.?

Answers

Answer:

Olympia Washington

Explanation:

Looked at a map and i had it on my test


GIVING 15 POINTS!!! DONT SCAM I WILL REPORT! PLZZZZ HELP!!! Answer the rest of the question for me plzzzzz

Answers

Answer:

A lot you can tell its mountainous terrain due the the lines being close together

Map b

Anyone know lol this isn’t my work tho

Answers

Protons is 1 and electrons is 2

5. The point in Earth's interior where the energy release of an earthquake occurs is the:

A. Focus

B. Epicenter

C. Shadow zone

Answers

The point within the earth where the fault rupture starts is called the focus or hypocenter. This is the exact location within the earth were seismic waves are generated by sudden release of stored elastic energy.

The point in Earth's interior where the energy release of an earthquake occurs is the focus. The correct option is a.

What is an earthquake?

An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.

Earthquakes can range in intensity, from those that are so weak that they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular period. The seismicity at a particular location on the Earth is the average rate of seismic energy release per unit volume. The word tremor is also used for non-earthquake seismic rumbling.

At the Earth's surface, earthquakes manifest themselves by shaking and displacing or disrupting the ground.

Learn more about earthquake, here:

https://brainly.com/question/29500066

#SJP5

Explain the difference between trade barriers and migration barriers.

Answers

Answer:

The difference between Trade Barriers and Migration barriers are

Migration barrier can be a trade barrier. Atlantic Ocean made it difficult for people to travel to the American Continent in the 1500s , the difficulty also made trade impractical. Whereas Trade barriers can also be language and cultural differences that make trade difficult. Taxes, tariffs and currency differences can also be trade barriers.

Answer:

Sometimes a Migration barrier can also be a trade barrier. The Atlantic Ocean made it difficult for people to travel to the American Continent in the 1500s, the difficulty also made trade impractical.

Trade Barriers can also be language and cultural differences that make trade difficult. Taxes, tariffs and currency differences can also be trade barriers.

Explanation:

Edge, got a 100 on it

Other Questions
Which best describes the language excerpt we hold these truths 4Which term describes powers that are shared by the national and state governments?OA. ImpliedOB.Inherent.concurrentODreservedResetNext Plz help Need answers ASAP Which of the following statements describes a functional text? Which of the following characteristics is MOST LIKELY to be true of agribusiness?A. The percentage of the workforce involved in agricultural activities is higher than the percentage of the workforce involved in other economic industries.B. Farmers rely on high levels of mechanization, such as harvesters and plows, to care for their crops.C. The average farm size is small in relation to the high amounts of agricultural products grown on the land.D. Farmers do not often produce agricultural surpluses, and their yields mainly benefit the local populations.E. Farmer's markets are the largest contributor to the economic growth of agribusiness. Help anyone can help me do the question,I will mark brainlest. The median age (in years) of the U.S. population over the decades from 1960 through 2010 is given by f(t) = 0.2176t3 + 1.962t2 2.833t + 29.4 (0 t 5) where t is measured in decades, with t = 0 corresponding to 1960.(a) What was the median age of the population in the year 1970?(b) At what rate was the median age of the population changing in the year 1970? (c) Calculate f''(1). we don't need to worry- is it a simple sentece? Relationship between q and t pleaseeee helppppp ANSWER RIGHT ILL BRAINLIST Why are independent agencies separate from the executive branch?A. Independent agencies have areas of responsibility that fall outside the executive branch.B. Independent agencies serve limited purposes within all three branches of government.C. Independent agencies serve many purposes across all three branches of government.D. Independent agencies do not share any of the responsibilities of the executive branch. Code Example 17-1 class PayCalculator { private: int wages; public: PayCalculator& calculate_wages(double hours, double wages) { this->wages = hours * wages; return *this; } double get_wages() { return wages; } }; (Refer to Code Example 17-1.) What coding technique is illustrated by the following code? PayCalculator calc; double pay = calc.calculate_wages(40, 20.5).get_wages(); a. self-referencing b. function chaining c. dereferencing d. class chaining You hit a tennis ball with an initial vertical velocity of of 10 ms The ball leaves the tennis racket 2 meters above the ground How much time does your opponent have before the ball hits the ground on the other side of the net At time t=0 a positively charged particle of mass m=3.57 g and charge q=9.12 C is injected into the region of the uniform magnetic B=B k and electric E=E k fields with the initial velocity v=v0 i. The magnitudes of the fields: B=0.18 T, E=278 V/m, and the initial speed v0=2.1 m/s are given. Find at what time t, the particle's speed would become equal to v(t)=3.78v0: Which of these is a covalent bond in which the electrons are not evenly shared? MAry ............Beautiful on her new clothes on her birthday A. Looks B.Looking C.Look like D.Look The work of a student to solve a set of equations is shown:Equation A: y = 15 2zEquation B: 2y = 3 4zStep 1: 2(y) = 2(15 2z) [Equation A is multiplied by 2.]2y = 3 4z [Equation B]Step 2: 2y = 15 2z [Equation A in Step 1 is simplified.]2y = 3 4z [Equation B]Step 3: 0 = 18 6z [Equations in Step 2 are added.]Step 4: 6z = 18 Step 5: z = 3 In which step did the student first make an error? Step1 Step 2 Step 3 Step 4 How does the passage add tension to the play? 4. The Elements and Principles of artwork together to create a sense ofA.unityB.conflictC.balanceD.variety Cual de las siguientes expreciones permite a fatima obtener t que es la cantidad de palitos nesesaria para armar una figura n how many degrees are there in the angle made by the heart hand and the minute hand of a clock when it is 9 o'clock