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Salsk061 [2.6K]
2 years ago
14

Name the 4 types of of coal and their average carbon value

Biology
2 answers:
xxTIMURxx [149]2 years ago
4 0

Answer:

Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.

Bituminous: Bituminous coal is a middle rank coal between sub-bituminous and anthracite. Bituminous usually has a high heating (Btu) value and is the most common type of coal used in electricity generation in the United States. Bituminous coal appears shiny and smooth when you first see it, but look closer and you may see it has layers.

Sub-bituminous: Sub-bituminous coal is black in color and dull (not shiny), and has a higher heating value than lignite.

Lignite: Lignite coal, aka brown coal, is the lowest grade coal with the least concentration of carbon.

lyudmila [28]2 years ago
4 0

Answer:

The four types of coal are peat, lignite, bituminous, and anthracite.

Explanation:

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A 6,000 kg train car is moving to the right at 10 m/s and connects to a 4,000-kg train car that wasn't moving. What is the veloc
SIZIF [17.4K]

6 m/s

This type of collision is a <u>Inelastic collision </u>

Explanation:

We begin by finding the momentum of the initial train car;

Remember that momentum is given by the formulae mass (kg) * velocity (m/s)

Therefore;

Momentum = 6000 * 10

= 60,000 kg⋅m/s

The other car has zero momentum because;

4000 * 0

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When the two train cars collide, the total momentum will be;

60,000 + 0 = 60,000

Therefore to find the velocity, well use the same formulae;

p = mv  whereby;

p – momentum

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v – velocity

60,000 = (6000 + 4000) * v

v = 60,000 / 10,000

v = 6

= 6 m/s

This is an elastic collision because we are assuming that no energy is lost in the collision. Most collisions, however, are not elastic but rather inelastic. In inelastic collision some of the kinetic energy is lost to the environment in some other form of energy such as heat energy.

Learn More:

For more on elastic collisions check out;

brainly.com/question/10864123

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#LearnWithBrainly

7 0
3 years ago
How do you find a genotype and a phenotype.
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My answer:
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This determination is the only feasible thing to do since dinosaurs are long dead and choices A, B, and D requires the subjects to be alive.
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Answer:

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