I only need the answer to the question below.
Ignore the works cited piece please I just need a spark (In other words PLEASE JUST GIVE ME A PARAGRAPH TO WORK WITH AND I WILL MARK BRAINLIEST)
Proxima Centauri is the second closest star to our solar system, which makes scientists curious to know more about it. What do we know about Proxima Centauri? How did we discover this information? Is it possible for humans to travel to this star? In this task, you will research and write a 500- to 750 word paper that answers these questions. Follow these steps to complete your research and writing. This guide about the research process can help.
Answers
Answer: The parallax angles are very small. Proxima Centauri is the parallax angle nearest to the star. It is less than one second or arc, which equals 1/3600 of a degree. A human finger is roughly 1 degree wide. The distances to stars are so large that conventional units such as kilometers or astronomical units are often too cumbersome to use. The nearest stellar system consists of the stars Proxima, alpha Centauri A and B and at least one planet Proxima b. The habitability of Proxima b and any other planets are likely to be significantly influenced by the orbital evolution of the system. To study the dynamical evolution of the system, we simulate the motions of Proxima and alpha Centauri A and B due to the perturbations from the Galactic tide and stellar encounters in a Monte Carlo fashion. From 100 clones, we find that 74% orbits of Proxima Centauri are bound to alpha Centauri A and B while 17% and 9% orbits become unbound in the simulations over the past and future 5 Gyr. If the system migrated outward in the Milky Way to its current location, more than 50% of clones could become unstable in backward simulations. The ratio of unstable clones increases with the simulation time scale and encounter rate. This provides some evidence for a capture scenario for the formation of the current triple system. Despite large uncertainties, the metallicity difference between Proxima and alpha Centauri A and B is also suggestive of their different origin. Nonetheless, further improvements in the available data and models will be necessary for a reliable assessment of the history of the Proxima-alpha Centauri system and its impact on the habitability of Proxima b.
Explanation:
Related Questions
How does the sport curling relate to Newton’s Second Law of Motion?
Answers
Curling is a sport in which players slide stones across a distance of ice toward a target area. The purpose is to accumulate the loftiest score for a game by making monuments rest closest to the center of the target at the end of each side. There are two brigades. Each platoon is trying to keep the other platoon's monuments down from the target by knocking their monuments out of the way.
Newton's Second Law " The acceleration of an object is directly commensurable to the net force acting on it and is equally commensurable to its mass. The direction of the acceleration is in the same direction as the net force acting on an object." This relates to the formula F = ma. The mass of the determinedness monuments in curling is 38 to 44 pounds or 17.3 to 20 kg. The thing of the sweepers is to control the acceleration of the gravestone by reducing disunion on the ice, which affects the force with which the gravestone is suitable to impact the other monuments.
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Second law-
Newtons second law occurs during curling when the delivery man, such as Glenn Howard, applies force to the stone pushing down the lane to the target while friction pulls it back the other way to a slow stop. The mass of the stone is 40lbs and the net force of everything on item will give you its slowly decreasing acceleration. Otherwise known as, F=mA.
Third law-
This law can be exerted in the sport of curling when the force behind a stone being delivered is transferred into another stone that is at rest, where the energy and force of one moving object is transferred to another. This almost completely stops the original stone, and gives some speed to the stone(s) it collides with.
schematic of curling stone Formula for curling-
F=mA
Which statement tells a result of the big bang?
Galaxies are moving farther away.
Galaxies are moving randomly.
Galaxies are moving closer.
Galaxies are stationary.
Answers
Answer:
Explanation:
Galaxies are moving closer
HELP
The satellite image below shows three major rivers in the area of Charleston, South Carolina. These rivers are the Ashley River, the Cooper River, and the Wando River.
Downtown Charleston is located next to Charleston Harbor and between the Ashley and Cooper Rivers. A creek in the northwest part of the image is labeled by the letter X. Of what body of water is this creek a tributary?
A.
the Cooper River
B.
the Ashley River
C.
the Wando River
D.
Charleston Harbor
Answers
Answer:
The Cooper river.
Explanation:
A tributary is a smaller river that branches off of a larger river. I lived in North Charleston so this area I'm pretty familiar with.
Based on the information given, we know that downtown Charleston is located between the Ashley and Cooper Rivers and next to Charleston Harbor. The correct option is D.
What is Charleston Harbor?Charleston Harbor, located between the Ashley and Cooper Rivers, is the larger body of water in the centre of the satellite image.
It is a large natural harbour formed by the confluence of several rivers, including the Ashley, Cooper, and Wando Rivers, which opens into the Atlantic Ocean.
Charleston Harbor is an important port and shipping centre that has played an important role in American history.
According to the information provided, downtown Charleston is located between the Ashley and Cooper Rivers, next to Charleston Harbor.
The creek labelled X can be found northwest of downtown Charleston and flows southward towards the larger body of water in the centre of the image.
Thus, the correct option is D.
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Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
HELP WITH THIS Q PLEASE?
Answers
Answer:
specific heat capacity = heat transferred /change in temperature
=2.11 •10^4/6.8-98
=0.02 • 10^4
Explain one way you could set up a tug-of-war that was imbalanced. What did you observe? What did you notice about the forces?
Answers
Earth's atmosphere is composed of
A.
iron, oxygen, and silicon.
B.
nitrogen, oxygen, and trace amounts of other gases.
C.
water, liquid oxygen, and trace amounts of other liquids.
D.
carbon dioxide, ozone, and magnesium.
Answers
Answer: B
Explanation:
:)
In which state is the best known source of petrified wood located? A Arizona B Alaska C California D Colorado
Answers
Answer:
Arizona.
Explanation:
Petrified Forest National Park is an American national park in Navajo and Apache counties in northeastern Arizona. Named for its large deposits of petrified wood, the park covers about 346 square miles (900 square kilometers), encompassing semi-desert shrub steppe as well as highly eroded and colorful badlands.
Question 5 of 5
Change in v = 9.8 m/s2xt. The diagram shows a ball falling toward Earth in
a vacuum.
v=0 m/s
Time (s) o
1
000
2-
3
o
4
What is the velocity of the ball at 4 seconds?
A. 9.8 m/s
B. 39.2 m/s
OO
C. 58.8 m/s
D. 19.2 m/s
Answers
Answer:
c
Explanation:
do the math
Electric Charge (guided inquiry)
Purpose: To show how matter becomes charged by induction
Materials: comb, sink with working faucet
Predict: Predict what you think will happen to the charges of the comb and water if the comb comes in contact with the water. Record your hypothesis before following the directions below to carry out the lab experiment. The charges would attract. How and why is what I don’t know.
Directions:
1. Turn on a faucet just enough to allow a thin stream of water to flow.
2. Have a student volunteer-run a comb through his/ her hair a few times.
3. Observe. Tell the student to hold the comb near, but not touching, the stream of water.
4. Answer all questions below in complete sentences, using the R.A.C.E. strategy.
Ask and record your findings: What do you observe? Describe. I observed the stream of water bend toward the comb. I gave the comb electric charge by passing a comb through my sister’s hair and that allowed the comb to bend the stream of water.
Ask and record your findings: What does this indicate (show)? Explain. I
Written response please read all and answer in complete sentences will give BRAINLIEST
Observe:
1. To test students’ predictions, have the student volunteer pass the comb through the water.
2. Then have them move the comb so that it is near but not touching the water.
Ask and record your findings: What do you observe? Describe. WILL GIVE BRAINLIEST
Answers
Answer:
It looks like you have some writing to do ,(-:
Explanation:
List an example of matter in each of the three states.
Answers
The example of matter in the three states is brick in solid state, water in liquid state and oxygen gas in gaseous state.
1. Solid: A brick is a solid object that maintains a fixed shape and volume.
2. Liquid: A glass of water is a liquid that conforms to the shape of its container but maintains a definite volume.
3. Gas: Oxygen gas in the atmosphere is a gas that does not have a fixed shape or volume, filling the available space.
The three states of matter are solid, liquid, and gas. Solids have a fixed shape and volume, such as an ice cube. Liquids have a definite volume but take the shape of their container, like water. Gases have neither a fixed shape nor volume and fill the entire space available to them, such as the air we breathe.
In summary, the states of matter describe the physical properties of substances based on the arrangement and movement of their particles, with solids having a fixed shape, liquids taking the shape of their container, and gases being free-flowing and filling all available space.
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Solid: An object that keeps a constant shape and volume is a brick.
Thus, Liquid: A glass of water is a liquid that keeps a consistent volume while taking on the shape of its container. Gas: Oxygen gas fills the available space in the atmosphere and does not have a defined shape or volume.
Gas, liquid, and solid matter can exist in any combination. Solids, like an ice cube, have a set shape and volume.
Like water, liquids have a set capacity but adopt the shape of their container. Gases, like the air we breathe, have neither a set shape nor volume and fill all available space.
Thus, Solid: An object that keeps a constant shape and volume is a brick.
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Which type of heat transfer
can occur through empty
space?
A. Convection
B. Conduction
C. Radiation
CONVECTION
CONDUCTION
RADIATION
Answers
Answer:
RadiationExplanation:
Radiation is the transfer of heat energy through space by electromagnetic radiation.
Radiation can occur through empty space
Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
Compare and contrast acids and bases. Tell what happens when they are mixed together. (with reason)
Answers
Answer#2:
When mixed, acids and bases neutralize one another and produce salts, substances with a salty taste and none of the characteristic properties of either acids or bases.
Explanation:
Answer#1
Acids give off H+ (Hydrogen) ions in water; bases give off OH- (Hydroxide) ions in water. Acids generally taste sour due to the sour H+ ion; bases taste bitter due to the OH- ion; but they may have other tastes depending on the other part of the molecule. ... Acids have a pH less than 7 ; Bases have a pH greater than 7.
Fill in the blank with the correct answer.
A baseball is dropped off the side of a cliff. It free-falls to the ground in 8 seconds. During the third second, the ball is travelling about _____
Answers
Answer:
your answer should be 30
Explanation:
Answer:
30 hope it helps :D
Explanation:
Assume that all of the objects in the diagram are solid and made of the same material.
In Set A, what would you have to do to the objects to make the gravitational forces between the objects in pair 2 the same as the forces between the objects in pair 1?
Answers
Answer:
You would have to decrease the size until they had the same masses.
Explanation:
Right now, pair two will be more attracted because of the larger size. If it decreased to the same size as pair one, the forces would be the same.
Answer:
bannanana
Explanation:
Help please due today
Answers
Explanation:
mosquito- when bit it pierces the skin using a special mouthpart (proboscis) to suck up blood. As the mosquito is feeding, it injects saliva into your skin. Your body reacts to the saliva resulting in a bump and itching.
wasp- are equipped with a stinger for self-defense. A wasp’s stinger contains venom (a poisonous substance) that’s transmitted to humans during a sting
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
ASAP please
A student is playing with marbles. He rolls a purple marble, which strikes a green marble that is at rest. After the collision, the green marble rolls away from the student. The purple marble rolls back toward him.
Why does the purple marble roll back toward the student? Explain your response in terms of Newton’s third law.
Answers
Answer:YOUR MOM LOL
Explanation: THIS IS THE ANSWER... NO FATHER LOL
Newton's third law states that every action has an equal and opposite reaction.
In the context of the scenario with the marbles, when the purple marble strikes the green marble, the green marble exerts an equal and opposite force toward the purple marble, which is why it rolls back toward him.
Transfer of momentum takes place from the green marble back to the purple marble. This can be explained in terms of Newton's third law, because the forces between two marbles are equal and opposite in direction.
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Travis is a vice principal of a technical school. Travis's job falls under Administration and Administrative Support pathway of the Education and Training career cluster.
True or false?
Career Exploration 1 in k12 online private school
Answers
Answer:
true
Explanation:
Answer:
True
Explanation:
Just took the test on Edmentum
Organic compounds are compounds containing
A. carbon and nitrogen
B. hydrogen and nitrogen
C. carbon and helium
D. carbon and hydrogen
Answers
Your science teacher gives you three liquids to pour into a jar. After pouring all of them into the jar, the liquids layer as seen in the image. What property of matter prevents the three liquids from mixing together? answers: density texture color mass
Answers
Answer:
Density
Explanation:
Each of the three liquids have different densities. Have you ever tried to mix oil and water? They don't mix because they have different densities.
only known planet able to support life
1
Earth
2. closest planet to the sun
7
Mars
3. hottest planet in the solar system
Jupiter
4. largest planet in the solar system
Neptune
5. large ring system
Mercury
6. blue color from methane gas
Uranus
7. once had water on surface
Venus
8. rotates on its side
Saturn
Answers
Example is
Which type of spacecraft would best be used to study the long-term effects of life in space on humans?
satellite
space probe
space shuttle
space station
Answers
PLEASE HELP ASAP BEST ANSWER WILL BE MARKED BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The total mass of a pizza is 160 grams. When the pizza is cut into pieces, what parts equal the whole?
10 grams, 30 grams, 40 grams, 40 grams, and 30 grams
25 grams, 25 grams, 25 grams, 25 grams, and 25 grams
30 grams, 30 grams, 30 grams, 30 grams, 40 grams
50 grams, 30 grams, 30 grams, 30 grams, and 10 grams
Answers
Answer:
It is the 3 one
Explanation:
Fish are not able to regulate their body temperature by producing heat.
How could a fish adjust its body temperature if it were too warm?
speeding up its level of activity
evaporating water from its skin
expelling water from its body
swimming into cooler water
Answers
Answer:
evaporating water from its skin
Answer:
swimming into cooler water
Explanation:
A cylindrical tube of length 27.75 cm and radius 2.00 cm is filled with argon gas. The empty tube weighs 188.25 g. The tube filled with argon weighs 188.87 g. Calculate the density. formula =
Answers
Answer:
Explanation:
that should help
Density is mass per unit of volume. The density of argon is 1.778 × 10⁻³ gm/cm³.
How are the density, volume, and mass of a substance related?Suppose that a finite amount of substance is there having its properties as:
mass of substance = m kgdensity of substance = d kg/m³the volume of that substance = v m³Then, they are related as:
d = m/v
The volume of the tube = π × r² × h
= π × (2cm)² × 27.75 cm
= 348.716 cm³
Mass of Argon = Mass when tube is filled - Mass when tube is empty
= 188.87 g - 188.25 g
= 0.62 g
Now, the density of the gas can be written as,
Density = Mass / Volume
= 0.62g / 348.716 cm³
= 1.778 × 10⁻³ gm/cm³
Hence, the density of argon is 1.778 × 10⁻³ gm/cm³.
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Which of the following is NOT laboratory evidence of a chemical reaction?
A. Large chunks of sodium chloride are placed in a mortar and pestle. The sodium chloride is broken into smaller pieces.
B. Hydrochloric acid is poured in a test tube containing a piece of magnesium. Bubbles of gas form.
C. A solution of silver nitrate is added to a solution of sodium chloride. A solid white substance forms.
D. A solution of sodium sulfide is added to hydroiodic acid. A rotten smell is given off.
Answers
Answer:
A. Large chunks of sodium chloride are placed in a mortar and pestle. The sodium chloride is broken into smaller pieces.
Explanation:
This is an example of physical change where the physical properties of the substance are altered without any formation of a new substance. So, it is not an evidence of a chemical reaction.
When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
What are the formulas for Newton's 1,2,3 laws of motion?
How did he come up with the idea of his book?
Answers
Newton's three laws of motion can be summarized by the following formulas:
Law of Inertia, Newton's 1st Law of motion:
F = 0, or F = ma if there is an acceleration.
This means that if an object is at rest, it will remain at rest unless acted upon by an external force. Similarly, if an object is in motion, it will continue to move in a straight line at a constant speed unless acted upon by an external force.
Newton's second law of motion:
F = ma
This formula states that the acceleration of an object is directly proportional to the net force applied to the object and inversely proportional to its mass. In other words, the greater the force applied to an object, the greater its acceleration will be. Similarly, the greater the mass of an object, the smaller its acceleration will be for a given force.
Newton's third law of motion:
FAB = -FBA
This formula states that for every action, there is an equal and opposite reaction. In other words, when one object exerts a force on another object, the second object exerts an equal and opposite force back on the first object.
Isaac Newton's most famous book, "Philosophiæ Naturalis Principia Mathematica" (often called "the Principia"), was based on his own research and discoveries in mathematics and physics. The idea for the book came from his desire to develop a comprehensive system for explaining the workings of the natural world based on mathematical principles. He began working on the book in the 1660s, and it was first published in 1687.
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Inertia, Acceleration, Action & Reaction