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## WILL GIVE BRAINLIEST PLEASE HELP! Please select the word from the list that best fits the definition stage in a star’s evolution formed as the core of a main sequence star uses up its helium and the outer layers escape into space

sorry I’m late
white dwarf is late stage in the life cycle of a comparatively low-mass main sequence star; formed when its core depletes its helium and its outer layers escape into space, leaving behind a hot, dense core. so the that would be the most reasonable answer thanks for posting, hope i helped

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## Which connective tissue forms the outer surface of each skeletal muscle? endomysium epimysium perimysium aponeurosis

Epimysium is the name of the connective tissue which forms the outer surface of each skeletal muscle. The term is derived from the words “epi” meaning (outer or superficial), and “mysium” meaning (of muscle).

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## A playground merry-go-round has a mass of 120 kg and a radius of 1.80 m and it is rotating with an angular velocity of 0.500 rev/s. what is its angular velocity (in rev/s) after a 22.0 kg child gets onto it by grabbing its outer edge? the child is initially at rest.

To answer this problem, we must remember that momentum is
conserved. Therefore,

Initial momentum = Final momentum

In this case we use angular momentum which it is defined
as:

Momentum =0.5 m ω^2

So finding for final angular velocity, ωf:

mi * ωi^2
= mf * ωf^2

120 kg * (0.5 rev / s)^2 = (120 kg + 22 kg) * ωf^2

ωf^2
= 0.2113

ωf = 0.46 rev/s

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## Which statement best explains why “The Dean’s Provocation . . .” is satirical? A. The poem was written in response to the ridiculousness of Swift’s poem. B. The poem makes fun of common female practices to emphasize the obsession with outer beauty. C. The poem uses pretend characters that readers have probably heard of in other poems. D. The poem scolds women who use their feminine beauty and charm to control a man.

The correct answer to this is:

D.Helen feels water on her hands and makes a connection
between objects and language.

In this chapter, Helen Keller describes her first
experiences with her new teacher.  Keller
finally understood the idea that a word Anne Sullivan, her new teacher, is
spelling “water” corresponds to the
water flowing over Keller’s hand.  This realization
led Keller to create connections and open doors of knowledge and opportunity
previously closed to her.

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## Diffusion across the cell's outer membrane:

Diffusion across the cell’s outer membrane:

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## Which cell structures cause the outer surface of the rough endoplasmic reticulum to appear rough?

The integumentary system covers the surface of the body is true about the integumentry system.

Explanation:

The integumentary system includes the skin, nails, glands, hairs, and nerves. Its main role is to act as a barrier to protect the body from the outside environment. It also retains body fluids, regulates body temperature, eliminates waste products, and protects against disease.

The integumentary system is the largest organ in the body that covers the surface of the body.

Thus, The integumentary system covers the surface of the body is the true statement about the integumentry system.

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## The layer of the earth where mantle convection occurs and on which the earth’s crust resists is the ? A. Outer core B. Asthenosphere C. Lithosphere D. Inner core

Explanation:

There are total 8 planets in the family of sun-the solar system.

4 terrestrial planets also known as inner planets- Mercury, Venus, Earth and Mars. These are rocky planets and smaller in size as compared to outer planets.

The inner planets and outer planets are separated by asteroid belt which is thought to be formed of a failed planet.

4 gaseous planets also known as outer planets – Jupiter, Saturn, Uranus and Neptune. These are very large in size formed of gases and have many moons. Jupiter is the largest planet and is the closest outer planet to the sun. Next is Saturn which is famous for the beautiful ring system. Then comes the blue planets Uranus and Neptune. These are blue in color due to presence of Methane in their atmosphere.

Thus, The order of outer planets from furthest to closest to the Sun:

Neptune, Uranus, Saturn, Jupiter

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## Which of the Earth’s layers is represented by the number two (2) on the image above? A. the mantle B. the outer core C. the inner core D. the crust

The answer is plate tectonics theory.

The idea that earth’s lithosphere is divided into large, moving sections is called the Plate Tectonics Theory.

The Plate Tectonics Theory is not attributed to any single person or geologist. In fact, it developed over a number of years due to scientific exploration and the research of the Earth’s crust.

The theory explains how the Earth is divided into large sections of plates, that are always moving, leadint to changing shape of the landmass on Earth. The movement of these plates is what casues earthquakes.

It is based on the theory of continental drift and was widely accepted in the scientific community by the 1950s.

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## How many electrons do the elements of the most stable group have in their outer energy levels

I think you mean the energy of a particle attached to a spring. In that case the total energy is given by

E=K+P=12mv2+12kx2E=K+P=12mv2+12kx2Where mm is the mass of the particle, vv is the velocity of the particle, and xx is the distance of the particle from the origin. So, the maximum of potential energy PP is given when the kinetic energy KKis zero (i.e. when v=0v=0, in the turning points of the particle). In that case E=PmaxE=Pmax. SoE=Pmax=12kx2maxE=Pmax=12kxmax2here xmaxxmax is the maximum stretch of the spring (i.e. the turning point, v=0v=0).

In the other hand, the maximum of kinetic energy is given when P=0P=0 (it occurs when x=0x=0), i.e. E=KmaxE=Kmax, or

E=Kmax=12mv2maxE=Kmax=12mvmax2where vmaxvmax is the maximun velocity of the particle, it occurs when the particle passes through the origin (i.e. when x=0x=0).

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## When two atoms have similar electronegativity values and neither atom is strong enough to pull an outer electron from the other atom, what is the resulting bond of these outer electrons? ionic covalent hydrogen metallic

B. The atom has more than eight valence electrons before bonding.

Explanation:

Expansion of the octet rule occurs only with atoms of non-metallic elements from the third period onwards, ie having three or more electronic layers. This is because these atoms have empty orbitals that can accommodate 10, 12 or more electrons. These atoms have more than eight valence electrons before bonding.

An example of a chemical element whose atoms may contract is phosphorus (P), which belongs to family 15 or VA of the periodic table. This means that it has five electrons in the valence shell and, according to the octet theory, should receive three more electrons to be stable with eight electrons.  However, the phosphorus is the element can be the central element of a compound and for this reason it makes five covalent bonds with four carbon atoms. Since the phosphorus atom shares five pairs of electrons, it has a total of ten electrons in the valence shell, meaning it did not follow the octet rule, but there was an expansion of its octet.

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## Biology B Unit 4: The Human Body – Lesson 12: The Integumentary System 1) Which of these is NOT a function of your skin? (1 point) a) keeps your body cool when you exercise b) releases waste products like urea and salts c) helps prevent pathogens from entering your body d) holds the bones of the skeleton together 2) The integumentary system includes (1 point) a) skin only b) hair only c) nails only d) skin, hair, and nails 3) Which of these skin cancers is most likely to spread to other parts of the body without early treatment? (1 point) a) basal cell carcinoma b) squamous cell carcinoma c) melanoma d) basal cell carcinoma and melanoma 4) What happens when the keratin-producing cells of the skin die? (1 point) a) Melanin and keratin are produced. b) An additional dermis layer is formed. c) A waterproof coating is formed. d) Melanin is produced. 5) Dandruff is caused by the shedding of excess cells from the outer layer of the skin. What is this outer layer called? (1 point) a) dermis b) hypodermis c) epidermis d) hair follicle

Two diseases caused by microorganism include –

a) Ebola hemorrhagic fever

b) Tuberculosis

Explanation:

Microbes are unicellular organisms. There are mainly five types microorganism that cause diseases. –

a) Virus

Example of a disease caused by Virus –

Ebola hemorrhagic fever caused by Ebolavirus and Filoviridae family

b) Bacteria

Example of a disease caused by bacteria –

Tuberculosis (TB) is a kind of respiratory disease caused by bacterium called Mycobacterium tuberculosis.

c) Fungi

Example of a disease caused by Fungi

Athlete’s foot is a fungal disease caused by Trichophyton

d) Protozoa

Example of a disease caused by Protozoa

Ameobiasis caused by Entamoeba histolytica

e) Worms

Example of a disease caused by worms

Infection in intestine is caused by Ascaris lumbricoides, Ancylostoma duodenale,  etc.

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## Name an element in the fifth period (row) of the periodic table with a complete outer shell.

Hello!

Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element.

So in short, the Correct Answer will be (D) an Element.

Hope that Helps! Have A Wonderful Day! ☺

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## Which of the following characteristics do all of the outer planets have in common? ________________________________________________________________ They are small and solid. They rotate slowly and are large and solid. They have many moons. They rotate quickly and are large and gaseous. _______________________________________ 12 pts

Like before we can get the position function, x(t), by integrating the acceleration, which in this case is gravity g = 9.81m/s². We will assign the downward direction as negative x in this problem and let the ground be x=0. Integrating once gives velocity: V(t) = -9.81t +17.
Integrating this to get position x(t) gives
x(t) = (-9.81/2)t² +17t = 4.905t² +17t
We need to solve this quadratic equation for the time t when the position x(t)=0 because this is when the ball hits the ground. Using the quadratic formula gives
t= 0 and 3.466
All quadratic formulas have two roots (answers)  Here the 0 root just means the  ball was at the ground at t=0 (which it was because that’s where it was thrown from)  The other root is of interest because that’s when it lands back on the ground and is our answer to part a.
t = 3.466sTo get part b we only now need to plug in half of our time to the position function.  Half because it went up for half the time and down for half. This gives
x(t) = 4.905(3.466/2)² +17(3.466/2) = 44.19m

part c is asking how long it takes to get to the highest point.  We already found that out in part b.  It is half the time from part a: t = 1.733s

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## Select the sentence that best describes why copper and some other metals are good conductors. Answer Copper atoms have loosely held electrons; this means they can freely move in and out of the nucleus of the atom. Copper atoms have a loosely held free electron in their outer shell that is able to move freely to other atoms. Copper and some other metals have highly active inner shells. This means that electrons can be freely exchanged between shells. Copper has a small number of electrons; this means it can easily shed these electrons and take electrons from other atoms. …?

The easiest way to solve this is to think about the number of times the digit 1 appears in each decimal place (ie, ones, tens, etc).

Assuming the pages are numbered 1-500, then the digit 1 will appear in the ones place on page 1, 11, 21, … and so on, up to 491. So, every 10 consecutive integers, the digit 1 is in the ones place exactly once. To be more precise, it appears in 50 ones places.

The digit 1 will appear in the tens place on pages 10,11, …, 19, 110, 111, …, 119, and so on. So in every 100 consecutive integers, the digit 1 is in the tens place exactly 10 times. If you count, it appears 50 times.

Finally, the digit will appear in the hundreds place from pages 100-199, which is 100 pages.

So the digit 1 appears 200 times.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!