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3 years ago

What is the ultimate source of energy for all fossil fuels? . . . A.. carbon. . . B.. water. . . C.. the sun. . . D.. pressure

1 answer:

5 0

The ultimate source of energy for all fossil fuels is : C. the sun

The thing about fossil fuel is that it originated from the fossils of living organism, which means the energy came from biomass. Biomass came from photosynthesis which technically came from the sun's energy

hope this helps

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Suppose that two stars in a binary star system are separated by a distance of 80 million kilometers and are located at a distanc

jonny [76]

Answer: 1) Angular separation equals 0.0000031 degrees

2) Angular separation in arc -seconds equals 0.011156"

Explanation:

For 2 stars separated by a distance 'S' and at a distance 'D' from the earth the angular separation in radians is given

$\theta _{rad}=\frac{S}{D}$

Applying values we get

$\theta _{rad}=\frac{80\times 10^{6}}{150\times 9.46\times 10^{12}}\\\\\therefore \theta _{rad}=\frac{1}{18487500}radians$

Now we know that 'π' radians equals 180 degrees thus the above value in degrees shall be equal to

$\therefore \theta _{degrees}=\frac{1}{18487500\times \pi }\times 180^{o}=0.0000031^{o}$

The angular separation in arc- seconds is given by

$\theta ''=\theta ^{o}\times 3600\\\\\theta'' = 0.0000031\times 3600=0.011156"$

8 0

3 years ago

Please help me with both questions!!

Mamont248 [21]

Answer:

17. Laccolith

18. Sill

Explanation:

A laccolith is formed when magma makes its way up a d-ike and lodges itself between sedimentary rocks. The successive flow puts pressure on the rock such that a dome like structure is formed.

Sills are like mini laccoliths but instead are much smaller and linear. They can appear on multiple layers as shown in the diagram above.

3 0

3 years ago

In the late 1800s and early 1900s, to becoming an independent nation, the Philippines was a territory of what country?

maria [59]

Answer:

Spain

Explanation:

Here's an article going in-depth: https://history.house.gov/Exhibitions-and-Publications/APA/Historical-Essays/Exclusion-and-Empire/The-Philippines/

To be honest I'm not that good at explaining things when it comes to history :)

5 0

3 years ago

Which from of democracy does the US have

mash [69]

Answer:

Representative Democracy

Explanation:

7 0

3 years ago

What are the main economic resources of the north sea

satela [25.4K]

Sea Food and water mostly.

6 0

3 years ago