Which of the following statements best describes a planetary system?
A planetary system is made of a central star with several planets and other objects orbiting around it. The planets are bound to their orbits by gravity. Our solar system is an example of a planetary system. There are other planetary systems in the universe.
A planetary system has an inner and outer star that balances the gravitational waves.
A planetary system is made of either a central star or a central planet with several planets and other objects or stars orbiting around it. The planets are bound to their orbits by gravity. Our solar system is an example of a planetary system. There are other planetary systems in the universe.
A planetary system is made of a central planet with outer planets are bound to their orbits by gravity. Our solar system is the only example of a planetary system. There are not any other planetary systems in the universe.
Answers
The statement"A planetary system is made of a central star with several planets and other objects orbiting around it. The planets are bound to their orbits by gravity. Our solar system is an example of a planetary system. There are other planetary systems in the universe." best describes a planetary system. The correct option is A.
What is a planetary system?A planetary system is a collection of celestial bodies that orbit around a central star. The most prominent example of a planetary system is our own solar system, which consists of the Sun at the center and eight planets and various other objects, including asteroids and comets, orbiting around it.
Planetary systems are formed from clouds of gas and dust called nebulae. The collapse of a nebula leads to the formation of a central protostar, which eventually becomes a stable star. As the protostar forms, the surrounding gas and dust flatten into a disk-shaped structure known as a protoplanetary disk. This disk contains the raw material from which planets and other objects will form.
The planets and other objects in a planetary system are held in their orbits around the central star by the force of gravity. In addition to planets, these systems can also contain moons, asteroids, comets, and other objects that orbit around the central star.
Planetary systems have been discovered around other stars, known as exoplanets. Scientists use a variety of techniques to detect these exoplanets, including radial velocity measurements and the transit method, which involves detecting changes in the brightness of a star as a planet passes in front of it.
So, a planetary system is a collection of celestial bodies that orbit around a central star, formed from a collapsing cloud of gas and dust. Our solar system is an example of a planetary system, but many other planetary systems have been discovered around other stars in the universe.
Here in the Question,
Option B is incorrect because a planetary system typically only has one central star, not multiple stars.
Option C is also incorrect because while some planetary systems may have a central planet, the vast majority have a central star. Additionally, the statement about an inner and outer star balancing gravitational waves is not accurate.
Option D is incorrect because there are numerous planetary systems that have been discovered outside of our own solar system. The existence of exoplanets has been confirmed through a variety of methods, including radial velocity measurements and the transit method.
Therefore, option A is the most accurate description of a planetary system as it captures the essential characteristics of a system containing a central star and orbiting planets, held together by gravity. It also acknowledges that there are other planetary systems in the universe beyond our own solar system.
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Related Questions
What is one way that an electric field is different from a magnetic field?
Answers
Answer:
The one of the major difference between the magnetic and electric field is that the electric field induces around the static charge particle which is either negative or positive, whereas the magnetic field produces around the poles (i.e., the north and south pole) of the magnet
Explanation:
Difference Between Electric Field And Magnetic Field. Magnetic field is an exerted area around the magnetic force. It is obtained by moving electric charges. The direction of the magnetic field is indicated by lines. While the electric fields are generated around the particles which obtains electric charge.
Explanation:
hope this helps
In the diagram, a force of 20 newtons is applied to a block. The block is in dynamic equilibrium. What is the magnitude and direction of the frictional force?
A. 20 newtons in the direction of the applied force
B. 20 newtons opposite to the direction of the applied force
C. 20 newtons perpendicular to the direction of the applied force
D. 20 newtons in two directions, perpendicular and in the direction of the applied force
E. No friction is acting on the block.
Answers
Answer:B 20 newtons opposite to the direction of the applied force
Explanation:
If in the diagram, a force of 20 newtons is applied to a block. The block is in dynamic equilibrium, then the magnitude and direction of the frictional force would be 20 newtons opposite to the direction of the applied force, therefore the correct answer is option B.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem In the diagram, a force of 20 newtons is applied to a block. The block is in dynamic equilibrium,
If a force of 20 newtons is applied to a block in the diagram. The frictional force would be 20 newtons in size and would be directed in the opposite direction as the applied force if the block is in dynamic equilibrium, making option B the right response.
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list both types of energy before skydiver jumps out of the plane and as the sky diver is diving.
Answers
Answer : This is an example of Kenitic and potential energy
Explanation:
kenitic: the act of moving or motion
potential: not. moving YET
he was not moving when he was on the plane and had potential energy cause he wasn't getting pulled down and kenitic energy was when he was getting pulled down from force of gravity when he was getting pulled to the ground when he was skydiving
help me pls i need the answer
Answers
please in the name of god help me guys.
Answers
1. D: the ability to cause a change or do work
The others dont make sense for energy.
2. C: Lamp
A lamp uses the electric current to light up a room, or area.
3. B: foil will bend away
The same charges repel each other that is why a magnet is repelled by the same pole of another magnet.
4. A: Sound
You can’t hear light or any of the other options.
5. A: gravity
Gravity is a force of nature that pulls on everything.
6. C: static electricity
The opposite charges stick to each other, a battery again is an example of this.
7. B: a copper nail
Metal is one of the best electric conductors.
8. C: closed circuit
This is because if a circuit is closed the electricity flows through perfectly but for example an open one would not work or it would leak energy.
Hope this helps
Derek owns a farm that produces soybeans, avocados, and pecans. What is the word used to describe these items?
Select one:
a.
crops
b.
livestock
c.
dairy
d.
non-perishables
Answers
Answer:
crops
Explanation:
dairy are milk products and those aren’t
live stock is domesticated farm animals raised to produce resources
non-perishables are canned food and dried food. they can last a long time. they don’t need to be refrigerated or
they are not any of the other answer choices
PLEASE HELP ME WITH THE GRAPH, I have no idea what to do and I am REALLY BEHIND. I set it to 100 points
Answers
Predictions
(You might want to edit these answers to your own liking )
First answer: Net force is calculated by adding all of the individual forces on an object.
Explanation: Net force is calculated by adding all of the individual forces on an object. For example, to calculate the net force on an airplane, add the lift, weight, thrust, and drag. When opposing forces, such as lift and weight, are present, they must be subtracted. During takeoff, the net force on an airplane is forward and up. During landing, it is backwards and down.
Second answer: When there is a net force on an object, it causes the object to accelerate in the direction of the net force; it is not the same as the direction of the motion unless the object is going in a straight line.
Explanation: If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion.
(You're going to have to do the chart on your own, sorry. But i'll do the conclusions and extension. )
PAGE 2
(CONCLUSIONS)
First answer: If two forces act on an object in the same direction, the net force is equal to the sum of the two forces.
Second answer: If two forces act on an object in opposite directions and they don't exactly cancel, what is left over is the net force (the difference in the forces).
Third answer: If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. While an unbalanced force (net force) acting on an object changes its speed and/or direction of motion.
Extension:
The simple answer, all are contributing a 3. Or 600N/3=200N.
But because why not, let's say ones pushing incorrectly.
If that happened that would make for all of them pushing 600N
Because one is Adding -600N and the other two are adding 600N a piece. Or -600N+2*600N=600N
I hope this helped you!
What is the Eiffel Tower made of?
Answers
Answer: The Eiffel Tower is primarily made of iron. Gustave Eiffel, the French engineer who designed and oversaw the construction of the tower, used wrought iron to build its frame. In total, the tower contains about 18,000 individual iron pieces and weighs over 10,000 tons. The iron framework is held together by 2.5 million rivets. The tower's base is made of concrete, and the top portion of the tower is covered in bronze plates.
Explanation:
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
Hi guys :) I am in desperate need of help. Thanks <3
Answers
Answer:
yes me to i think its A
Explanation:
help me please 35 points and mark brainliest
Answers
1. The kinetic energy of the truck is 1959940.8 J
2. The kinetic energy of the car is 463037.04 J
1. How do i determine the kinetic energy of the truck?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of truck (m) = 6000 KgVelocity of truck (v) = 92 Km/h = 92 / 3.6 = 25.56 m/sKinetic energy of truck (KE) =?KE = ½mv²
KE = ½ × 6000 × 25.56²
KE = 1959940.8 J
Thus, the kinetic energy is 1959940.8 J
2. How do i determine the kinetic energy of the car?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of car (m) = 1200 KgVelocity of truck (v) = 100 Km/h = 100 / 3.6 = 27.78 m/sKinetic energy of car (KE) =?KE = ½mv²
KE = ½ × 1200 × 27.78²
KE = 463037.04 J
Thus, the kinetic energy is 463037.04 J
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Which of the following is the primary function of groundwater?
A. fighting fires
B. supplying homes with drinking water
C. irrigating crops
D. mining
Answers
Answer:
irrigating crops
Explanation:
Suggest one way energy can be transferred without being transformed.
Answers
I don’t know if this is right though so don’t take my word for it
Huan wants to enter the science fair at his school. He has a list of ideas for his project. Which questions could be answered through scientific investigation? Check all that apply. Does pressure have an effect on the solubility of a substance? Which physicist was the smartest? Is the information on the periodic table difficult to understand? Which brand of soap is the best for cleaning grease off of dishes? Which laboratory experiment is the most fun to perform?
Answers
PLS ASAP Summarize the two stages of cellular respiration. Be sure to explain where in the cell each stage occurs.
Answers
Answer:
⚫---------Hello---------⚫
Your answer should be:
The first stage of cellular respiration occurs in the cytoplasm. This is where glucose is broken down into smaller molecules. A small amount of energy is also released. The second stage occurs in the mitochondrion. This is where the small molecules combine with oxygen to produce water, carbon dioxide, and a large amount of energy.
Explanation:
I hope this answered your question
Feel free to tell me if it didn't.
I would highly appreciate a brainliest!
Have a wonderful day!
Answer:
Sample Response: The first stage of cellular respiration occurs in the cytoplasm. This is where glucose is broken down into smaller molecules. A small amount of energy is also released. The second stage occurs in the mitochondrion. This is where the small molecules combine with oxygen to produce water, carbon dioxide, and a large amount of energy.
Explanation:
edge 2022 TnT
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
Describe 3 factors an engineer should take into consideration when choosing material for building the pipes in a pipeline
Gr. 8
Think it has something to do with Viscosity, Density, and Pressure but not sure what
Answers
Answer: 1. Material being transported 2. The temperature of the material being transported 3. How long the pipes will be there (lifespan)
Explanation: 1. - The pipe builder should consider the material being transported to choose the correct material of the pipes to use, so they last long and can hold the material.
2. - Similar to 1, the pipe builder should consider the temperature of the material to choose the correct material of the pipes to use, so the pipes don’t break and function properly.
3. - If the pipe builder uses a material that can hold the material, that’s great! If that material will last a short time, it would not work if the pipes were to be used for a long time.
The things you said before about viscosity, density, and pressure are also correct. The correct answers are mainly talking about factors of the material being used in the pipes.
hope this helped :)
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:
hey if your answering this can you just answer the number 14 I already got the rest
thanks
Answers
Good Morning! I have a question-
distance
------------ = ???
speed
Complete the diagram. Whoever answers correctly first, gets brainlyest!
Answers
Which of the facts listed below are true?
I. A solenoid is made from loops of wire or metal.
II. A solenoid is a straight line of wire.
III. A solenoid must always be made of plastic.
IV. A solenoid can generate a magnetic field from an applied electrical current.
V. A solenoid can be used to make an electromagnet.
A. I, IV, and V
B. II, III, and V
C. II, III, and V
D. I, III, and V
Answers
Explain what happens as the heart grows bigger.
Answers
Initially, the heart may grow bigger as a compensatory mechanism to try to keep up with increased demands for blood and oxygen. For example, if a person engages in regular exercise, their heart may enlarge to accommodate the increased demand for blood and oxygen to the muscles.
However, if the heart continues to grow over time, it can become less efficient at pumping blood and may develop structural abnormalities that increase the risk of heart failure, arrhythmias, and other complications.
In some cases, cardiac hypertrophy may be reversible if the underlying cause is treated, such as by managing high blood pressure or heart disease. However, if left untreated, hypertrophy can lead to irreversible damage to the heart muscle and may require more aggressive interventions, such as medication, surgery, or other medical procedures to manage the condition.
Do nutrients cause seagrass to grow more in this area? If so, are both nitrogen and phosphorus equally important? Explain your answer.
Answers
Seagrasses are a vital part of the marine ecosystem..
Seagrasses are submerged flowering plants found in shallow marine waters, such as bays and lagoons and along the continental shelf in the Gulf of Mexico. A vital part of the marine ecosystem due to their productivity level, seagrasses provide food, habitat, and nursery areas for numerous vertebrate and invertebrate species. The vast biodiversity and sensitivity to changes in water quality inherent in seagrass communities makes seagrasses an important species to help determine the overall health of coastal ecosystems. Seagrasses perform numerous functions:
Stabilizing the sea bottom
Providing food and habitat for other marine organisms
Maintaining water quality
Supporting local economies
Lauren's SUV was detected exceeding the posted speed limit of 60 kilometers per hour, how many kilometers per hour over the limit would she have been traveling if she had covered a distance of 10 kilometers in 6 minutes? (6 minutes = 0.1 hr)
Answers
40 mph
this is because if we multiply both by 6, we get 60 and 36 minutes but we cant have 36 minutes since it has to be 60 so we can get mph so we would have to multiply both by 10 makeing the time 60 and the kilometers 100 and 60 minus 100 is 40
could someone summarize these into a paragraph? i'll give brainliest
DUE TODAY!!
Answers
Answer:
I can't see the picture
Explanation:
Im sorry can you right whats on the picture down in the comments plz.
Can someone please help me with this?
Answers
Answer:
the answer is A.
Answer:
The Answer Is B.
It's Hard To Explain You Just Have To Trust Me
Explanation:
If It's Correct (Which i am certain that it is) can you plz award me with Brainliest
True or False? If the ball hits any line when it is NOT on the serve, it is in bounds. Pickle Ball for PE
Answers
Answer:
Well according to volleyball rules, if the ball hits the out of bounce line, its considered in.
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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Draw a diagram that shows how Mark and Gina can model the positions of the Sun, Earth, and the Moon, and their orbital paths, during a solar eclipse. You must use all of the tools in your design: lamp, tennis ball, golf ball, and yarn.
Answers
Image result for Draw a diagram that shows how Mark and Gina can model the positions of the Sun, Earth, and the Moon, and their orbital paths, during a solar eclipse. You must use all of the tools in your design: lamp, tennis ball, golf ball, and yarn.
Place a lamp 25cm from the model. Move the Moon in front of Earth (right) to see the lunar umbral and penumbral shadow, simulating a solar eclipse. Move it behind Earth (left) to see Earth's umbral and penumbral shadow cast on the Moon, a lunar eclipse.
Which alignment of the sun Moon and Earth causes a lunar eclipse?Image result for Draw a diagram that shows how Mark and Gina can model the positions of the Sun, Earth, and the Moon, and their orbital paths, during a solar eclipse. You must use all of the tools in your design: lamp, tennis ball, golf ball, and yarn.
When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can happen only when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon.
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Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping