Which energy source is formed when organic matter is trapped underground without exposure to air or moisture?A. natural gas
B. coal
C. oil
D. biomass fuels

Answers

Answer 1
Answer: C. Coal Is The Answer

Answer 2
Answer:

coal is the correct answer


Related Questions

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Atoms form two types of bonds. Which describes these bonds? A.
In a covalent bond, valence electrons are shared; in an ionic bond, valence electrons are transferred.

B.
In a covalent bond, valence electrons are transferred; in an ionic bond, valence electrons are shared.

C.
In a covalent bond, outer electron orbitals are shared; in an ionic bond, outer electron orbitals are transferred.

D.
In a covalent bond, outer electron orbitals are transferred; in an ionic bond, outer electron orbitals are shared.

Answers

Atoms form two types of bonds: ionic bond and covalent bond. In a covalent bond, valence electrons are shared; in an ionic bond, valence electrons are transferred. The answer is letter A.

Answer:

Atoms form two types of bonds: ionic bond and covalent bond. In a covalent bond, valence electrons are shared; in an ionic bond, valence electrons are transferred.

Explanation:

Therefore, the answer is A

The bending of waves around the edge of a barrier is known asa. reflection.
b. refraction.
c. diffraction.
d. interference.

Answers

The answer is C. The bending of waves around the edge of a barrier is called diffraction. It is any phenomena which happens when a wave energy meets an obstacle or a slit. Examples of this are the tracks on a CD act as a grating to form a rainbow pattern in the disk, a hologram on a card, resolution limits on cameras and microscope.

The bending of waves around the edge of a barrier is known as diffraction (Option C)

How do i know which option is correct?

To know which option is correct, we shall define the given options. This is shown below:

Reflection of a wave is simply defined as the bounce back of a wave without a change in the properties of the wave

Refraction is the change in the properties of a wave as it travel from one medium to another.

Diffraction is a property of wave which is defined as the bending of light around the edge of obstacle or barriers.

Interference is the combination of waves to form an entirely different wave with either a reinforce or destructive displacement.

With the above definitions, we can conclude that the correct answer to the question is diffraction (option C)

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Drag the tiles to the correct boxes to complete the pairs.Match the following astronomers to their contributions.
Galileo Galilei
Albert Einstein
Henrietta Swan Leavitt
Edwin Hubble
Georges Lemaître
theorized that the universe had a beginning
showed that the universe was expanding
demonstrated a method to calculate the distance of celestial bodies
was the first to use a telescope to observe the planets
huit a model of the inverse haced on relativity
2020 Edmentum. All rights reserved.

Answers

Galileo Galilei was the first to use a telescope to observe the planets

Albert Einstein built a model of the universe based on relativity

Henrietta Swan Leavitt demonstrated a method to calculate the distance of celestial bodies

Edwin Hubble showed that the universe was expanding

Georges Lemaître theorized that the universe had a beginning

What is science?

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.

A method of learning about the world is science. Science allows people to participate in the creation of new knowledge as well as use that knowledge to further their goals. It is both a process, a product, and an institution.

Thus, The first person to observe the planets through a telescope was Galileo Galilei.

Based on relativity, Albert Einstein created a model of the universe.

A technique to determine the separation between celestial bodies was demonstrated by Henrietta Swan Leavitt.

Edwin Hubble demonstrated the expansion of the universe

According to Georges Lemaître, the universe had a beginning.

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Answer:

Georges Lemaître  - theorized that the universe had a beginning

Albert Einstein  - huit a model of the inverse haced on relativity

Galileo Galilei  - was the first to use a telescope to observe the planets

Edwin Hubble  - showed that the universe was expanding

Henrietta Swan Leavitt  - demonstrated a method to calculate the distance of celestial bodies

is my choices report if wrong

When Tito lifts the heaviest object he can, he is testing his _____.

Answers

When Tito lifts the heaviest object he can, he is probably testing his ability to lift weight. In other words, he could also be testing his upper body muscle strength. The process is called weight-lifting and it is designed to test the muscle strength of your upper body. 

Explanation :  When Tito lifts the heaviest object, he is testing his strength.

We know, strength is the quality of the physical energy and potential of the person. The strength of the person is power and his capacity.

So, we can say that When Tito lifts the heaviest objects then he is testing his strength, potential, and power.

Two objects are moving at equal speed along a level, frictionless surface. the second object has twice the mass of the first object. they both slide up the same frictionless incline plane. which object rises to a greater height?

Answers

Answer:

They both rises to same height.

Explanation:

When an object is sliding up in friction less surface than according to conservation of energy its potential energy will be converted into kinetic energy.

mgH=(1)/(2)mv^(2)\n v=√(2gH)

Here, m is the mass, v is the velocity, g is the acceleration due to gravity and H is the height.

Here the height is independent on the mass of an object and its only depend on velocity.

Now according to the question, two objects have same velocity but they have different masses.

Therefore, they rises to the same height because  height will not change with mass.

Both objects rise to the same height

\texttt{ }

Further explanation

Let's recall Kinetic Energy Formula as follows:

\large {\boxed{Ek = (1)/(2)mv^2} }

Ek = Kinetic Energy ( Joule )

m = mass of the object ( kg )

v = speed of the object ( m/s )

Let us now tackle the problem !

\texttt{ }

Given:

initial speed of first object = initial speed of second object = v

final speed of first object = final speed of second object = 0

mass of first object = m

mass of second object = 2m

Asked:

height = H = ?

Solution:

We will use Conservation of Energy to solve this problem:

Ep_1 + Ek_1 = Ep_2 + Ek_2

0 + (1)/(2)mv^2 = mgH + 0

(1)/(2)v^2 = gH

v^2 = 2gH

\boxed {H = (v^2)/(2g)}

\texttt{ }

H_1 : H_2 = (v_1^2)/(2g) : (v_2^2)/(2g)

H_1 : H_2 = v_1^2 : v_2^2

H_1 : H_2 = v^2 : v^2

H_1 : H_2 = 1 : 1

\boxed{ H_1 = H_2 }

\texttt{ }

Conclusion:

Both objects rise to the same height

\texttt{ }

Learn more

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Answer details

Grade: High School

Subject: Physics

Chapter: Energy

Which of the following is NOT an example of work?a. a windmill turning in the wind
b. a person sliding a box across the floor
c. a metal bar bracing a leaning brick wall
d. an air bag deploying in an automobile wreck

Answers

Work  =  (force) · (distance)

a).  The wind does work on the windmill.

b).  The person does work on the box.

c).  The metal bar exerts force on the leaning wall,
but nothing moves, so there's no work done.

d).  The explosive inflator does work on the airbag, and very soon
after that, the driver and passengers do work on it too.