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MissTica
3 years ago
5

The most abundant type of coal in the United States is _____. bituminous coal lignite brown anthracite

Physics
1 answer:
Masteriza [31]3 years ago
8 0

Bituminous coal

Explanation:

The most abundant type of coal in the United States is the bituminous coal. It accounts for about 45% of the total coal production in the United States

  • Coal is one of the fossil fuels that is primary used for energy production.
  • Some power plants are operated using coal as their fuel source.
  • Coal produced in shallow swamps in which plant materials are suddenly buried in an environment that lacks oxygen.
  • With burial and maturity, coal attains different levels.

It goes from Peat to Lignite to Sub-bituminous to Bituminous to Anthracite coal.

Learn more:

Coal reserve brainly.com/question/985007

#learnwithBrainly

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To make the next delivery, Sam-I-Am goes 45 mi/h for 2 hours. How far did he travel in that time?
andrezito [222]

Hello =D

This problem is about cinematic

So

V = 45 mi/h

t = 2 h

Then

V= X/t

X = V*t

Then

X = (45)*(2)

X = 90 mi

Best regards

5 0
3 years ago
A bird takes off from the tree and after 5 s is flying at a speed of 10 m/s. Calculate
Volgvan

Answer:

10miles/second

Explanation:

Change in velocity of the bird is expressed as the difference between the final velocity and initial velocity of the body.

Change in velocity = Final velocity - initial velocity

Since the bird takes off from the tree, the initial velocity of the bird = 0miles/sec

Final velocity = 10miles/secs

Change in velocity = 10-0

Change in velocity = 10miles/second

6 0
2 years ago
A 300W hot plate produces 45,000 J of thermal energy while operating for 2 min. What is the efficiency of this devide? it need t
Gekata [30.6K]

Answer:

Explanation: P = 300 W   and t = 2 min = 120 s

Energy Q = Pt = 300 W · 120 s = 36 000 J.

Thus, plate can not produce 45 000 J heat.

5 0
3 years ago
7. Why does increasing the mass of an egg increase the chance that it will be damaged in a drop?​
12345 [234]
Because if you increase the surface area of such a fragile object there is more space and in turn more of a chance for the object (in this case the egg) to be damaged.
7 0
3 years ago
A student has a thin copper beaker containing 100 g of a pure metal in the solid state. The metal is at 215°C, its exact melting
soldier1979 [14.2K]

Answer:

The metal will melt but their will be no change in temperature.

Explanation:

The metal is at its melting temperature which means it is still in solid phase but have to cross the enthalpy of its condensation at this same temperature to convert into liquid phase.

<u>On supplying heat, the metal's temperature will not change as the heat will be required as enthalpy of condensation to melt the solid to liquid at the melting temperature.</u>

6 0
3 years ago
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