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Neko [114]
3 years ago
8

Our solar system is thought to have started with the birth of our Sun, which formed from a cloud of interstellar dust and gas. T

his cloud condensed and eventually collapsed from its own gravitational pull. The heat and pressure built up, forming a protostar. Eventually nuclear fusion began. Planets formed from remaining dust and gas orbiting the protostar.
This explanation best describes _____.
A. The Nebular Theory
B. The Big Bang Theory
C. The Inflation Theory
D. The Condensation Theory
Physics
2 answers:
faltersainse [42]3 years ago
5 0

Answer: A. Nebular theory

Explanation:

Nebular theory explains the formation of our solar system. It explains the birth of Sun from cloud of dust and gas. The beginning nuclear fusion after condensation and collapse of this cloud and formation of planets.

The big bang theory describes the theory of beginning of universe.

The inflation theory proposes the rapid expansion of universe in first few moments of the formation of universe.

Condensation theory explains the arrangement of planets and orbits about the Sun in our solar system.

Hence, the correct option is A.

Flauer [41]3 years ago
3 0
B the big bang theory

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A seesaw pivots as shown in below. What is the net torque about the pivot point?
rodikova [14]

Answer:

2.3 Nm clockwise

Explanation:

Take counterclockwise to be positive and clockwise to be negative.

∑τ = (3 N) (2.5 m) − (7 N) (1.4 m)

∑τ = 7.5 Nm − 9.8 Nm

∑τ = -2.3 Nm

The net torque is 2.3 Nm clockwise.

7 0
4 years ago
An imaginary dense star z has 1/5 the radius of earth, but 1000 times the earths. how much would a mass weighing 1.0n on earth w
andrew11 [14]
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8 0
3 years ago
What is the element with the lowest electronegativity value?
Lerok [7]
<h2>Answer: Francium </h2>

Let's start by explaining that electronegativity is a term coined by Linus Pauling and is determined by the <em>ability of an atom of a certain element to attract electrons when chemically combined with another atom. </em>

So, the more electronegative an element is, the more electrons it will attract.

It should be noted that this value can not be measured directly by experiments, but it can be determined indirectly by means of calculations from other atomic or molecular properties of the element. That is why the scale created by Pauling is an arbitrary scale, where the maximum value of electronegativity is 4, assigned to Fluorine (F) and the <u>lowest is 0.7, assigned to Francium (Fr).</u>

7 0
4 years ago
A light ray traveling from a higher index of refraction medium into a lower index of refraction medium (for example, from water
masya89 [10]

Answer:

option C

Explanation:

The correct answer is option C

When the ray of light pass from higher refractive index to lower refractive index then the light bend  away from the normal.

when the refracted ray is parallel to the boundary of the medium, θ₂ = 90°

and the incident angle θ₁

so, the angle  θc is known as the critical angle.

At critical angle the refracted ray becomes parallel to boundary surface.

4 0
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3 years ago
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