what is the history behind gravity and the solar system
Answer:
Humans only recently (like in the last 300 years) realized what Gravity is all about. Greek philosophers thought that the planets and stars were part of the gods' realm and followed a "natural motion." They did not realize that Gravity is involved. The Greeks' ideas stuck around until the 16th century. Beginning in the 1500s, though, astronomers like Galileo and Brahe discovered that the earth and other planets revolved around the sun. Kepler showed that they moved in an eliptical orbit, not a circle. The question was why. Sir Isaac Newton -- The Discoverer of Gravity! Sir Isaac Newton was an English mathematician and mathematician and physicist who lived from 1642-1727. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature. Whatever really happened, Newton realized that some force must be acting on falling objects like apples because otherwise they would not start moving from rest. Newton also realized that the moon would fly off away from Earth in a straight line tangent to its orbit if some force was not causing it to fall toward the Earth. The moon is only a projectile circling around the Earth under the attraction of Gravity. Newton called this force "gravity" and determined that gravitational forces exist between all objects. Using the idea of Gravity, Newton was able to explain the astronomical observations of Kepler. The work of Galileo, Brahe, Kepler, and Newton proved once and for all that the Earth wasn't the center of the solar system. The Earth, along with all other planets,orbits around the sun. Two astronomers, J.C. Adams and U.J.J. LeVerrier, later used the concept of Gravity to predict that the planet Neptune would be discovered. They realized that there must be another planet exerting a gravitational force on Uranus because Uranus had odd perturbations in its orbit. (Perturbations are deviations in orbits.) Albert Einstein -- The General Theory of Relativity Einstein developed a whole new idea about Gravity. According to Einstein, Gravity arises from the "warping" of space and time. Einstein's new theory of Gravity explains a number of phenomena that would violate Newton's theory. For example, light bends when passing near massive objects like the Sun. And a clock raised above the Earth speeds up relative to a clock on the surface. Gravity is a force of attraction that exists between any two objects. There is a force of gravity between the sun and the Earth, between the Earth and us, and even between two marbles. Projectiles, satellites, planets, galaxies, and clusters of galaxies are all influenced by Gravity. Gravity is the weakest of the four known forces of nature, yet the most dominant force. Even though it's the weakest force, Gravity holds together entire solar systems and galaxies! The law of universal gravitation says that every object attracts every other object with a force that, for any two objects, is directly proportional to the mass of each object and inversely proportional to the square of the distance between the two objects. The gravitational formula is This is an example of the "inverse-square law": gravitational force varies as the inverse square of the distance between the two objects. As a result, the effect of Gravity falls rapidly as the distance increases between two objects. The best current estimate of G is that it eqauls about 6.67259 10-11 newton-square meter per square kilogram. The gravitational field for a planet, g, equals GM/Rsquared, where G is the mass of the planet and R is the distance of the object from the center of the planet (the planet's radius if the object is on the surface of the planet). This means that Gravity is greater where a planet is more massive and where it has a smaller radius. So even though Mars has only about 1/10th of the mass of the Earth, the gravitational force on the surface of Mars is more than 1/10th that on the surface of the Earth -- because Mars' surface is closer to the planet's surface! The force of attraction between you and the Earth is your weight. Gravity determines the "escape speed" for an object like a rocket. The stronger the gravitational pull of the object, the larger the escape speed. The following chart shows the escape speed for the sun, two planets, and the Earth's moon.
Sun 620 km/s
Jupiter 60.2 km/s
Earth 11.2 km/s
Moon 2.4 km/s
How is the influence of the Dutch still seen in New York City today?
Answer:
Their sharp-stepped gabled roofs became a permanent part of the landscape, and their merchants gave the city its characteristic commercial atmosphere. The habits bequeathed by the Dutch also gave New York hospitality to the pleasures of everyday life quite different from the austere atmosphere of Puritan Boston.
Explanation:
pls mark brainliest
Pls help bc social studies is not my best subject
Answer: organizing the underground railroad
Explanation: Fredrick was a conductor on the underground railroad
Answer:
I'm not 100% sure but I think it's the second one because I can kind of rule out the rest. Process of elimination. Sorry if it's wrong!
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SIMPLE QUESTION BUT PLS HURRY I AM BEING TIMED!!! Privacy laws protect your electronic communications if you are suspected of a crime.
False
True
HELP!!!!!!!!!!!!!!!!!!!!!!!! 15 PTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I'm talking about India here:
Why will traditional methods for sanitation and drinking water not work throughout the world? What are some of the solutions that are being suggested that can be done in the home and at a low cost?
Answer:
Explanation:
Water-related efforts in the developing world are often balkanized and not sufficiently There can be different strategies to ensure access to safe water depending on the ... are without improved water and more do not have access to safe drinking water, organizations that work on improving access to water and sanitation.
Box 1 has more mass than Box 2.
Using four or more complete sentences, examine the achievements and leadership qualities of Abraham Lincoln
Answer:
I have made sure this answer is plagiarism-free.
Following his famous Emancipation Proclamation, Lincoln led the United States to victory over the Confederacy and passed laws to end slavery. Lincoln was right in endorsing the Union's anti-slavery cause. He clearly did not support the Confederacy or those that supported slavery. Lincoln was caring, honest to a fault, he persevered despite hardship, he was brave, and he was wise enough to encourage good citizenship in our country.
9. Describe the Child Soldier Prevention Act (CSPA). What is it? What does
it do?
Explanation:
The CSPA bans the United States from providing military assistance or arms sales to governments that use children in combat, but the president may waive the application of the law for specific countries if it is deemed to be in the national interest.These actions listed below are examples of the President of the United States' role as (complete this sentence with A, B, C, or D)
{Inspecting an Army base and observing a training exercise}
{Deploying troops to protect an American embassy overseas}
{Authorizing the use of military force against an enemy nation}
!no links, the administrator will delete your user and "answer" that is the link... i dont want anyone getting hac-ked by stu-pid hac-kers sending out the same link to the same site that has a fire-wall brea-ker!
A) foreign policy leader.
B) chief of state.
C) party leader.
D) commander-in-chief.
!THIS QUESTION IS AN USATESTPREP QUESTION SO ANSWER TODAY!
Ω Entity001 And Project Omega Ω
Explanation: if you are talking about true then it is a
if your talking about false it is b
why is this type of interaction important in u.s society?
a)free speech allows people to help create a better government
b) due process laws are guaranteed by the fifth amendment
c) individual protections or guaranteed by the 14th amendment
d) freedom of the press helps the government respond to public opinion
Answer: A
Explanation: freedom of speech allows people to discuss politics and influence the government in the way they see as most beneficial for the country.
3. They are __ forms of communication?
a) 1
b) 3
c) 4
d) 2
Answer:
3
plz mark as brainliest
Natural resources are not evenly distributed among countries. Which of the following correctly shows how the Middle East is an exmple of uneven distribution?
A
abundance of oil, but a scarcity of water
B
abundance of coal, but scarcity of copper
C
abundance of natural gas, but a scarcity of oil
D
abundance of water, but a scarcity of phosphates
as a student what role can you play to make the society free from problems
Explanation:
Role and Importance of Students in Society
which god lived in mount olympus?
Answer:
Zeus god
..........................
Explanation:
Can y’all help me ???
Answer:
North is the correct anwser.
Explanation:
Which terms are directly associated with Trench warfare? Select all that apply.
1) over the top
2) lice
3) no man's land
4) cavalry
5) rapid movement
6) barbed wire
7) dreadnoughts
Answer:
3.no man's land.
They occurred when a revolution in firepower was not matched in similar advances
All of the following made up the Indus River Valley except:
a) China
b) Bangladesh
c) India
d) Pakistan
Answer:
b) Bangladesh
who else hates when couples act all mushy around you? it makes me feel lost inside and even more deppressed
Answer:
Yea
Explanation:
Answer:
i honestly dont care about anything right about now people just lets just say people do things and sometimes dont care how you feel about it Explanation: sorry your feeling this way
Can y’all plz help it’s due today!
Answer:
1st one I think it D
2nd I think its D
I hope this are right
what is the surface area of this shape
Answer:
86
Explanation:
3*3*9*2
write and explain any three sector of development potentialities in Nepal
Answer:
Infrastructure Development Highways, airways, and rural roads connect all districts of Nepal. Hydroelectricity projects of varying scopes are in process and construction, and various international organizations are engaged
1.Hydropower plants
2.Tourism
3.Mining
Infrastructure Development Highways, airways, and rural roads connect all districts of Nepal.
What is the Infrastructure?A country, city, or other area's infrastructure is the collection of systems and equipment that provides the amenities and services required for the operation of its economy, households, and businesses.
A significant industry that drives the Indian economy's overall development is infrastructure. The Planning Commission's Secretariat for Infrastructure is involved in developing policies that will guarantee the nation's timely development of top-notch infrastructure.
The social, economic, and environmental results that define how well people live are fundamentally influenced by infrastructure. Infrastructure must be understood as a networked "system of systems" that supports our society physically.
Infrastructure is referred to as the fundamental physical framework of an organization, region, or country. It frequently pertains to the creation of public goods or industrial activities. Transportation, communication, sewage, water, and educational infrastructure are a few examples.
Learn more about the Infrastructure here:
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how does your career path sync with values and personality
Answer:
Understanding others' communication styles and how they interact with you is just as important as knowing about your own. When you have a firm handle on your own skills, personality and interests as they relate to your job search, you'll be a better candidate and more likely to land the job when interviewed.
Explanation:
What's the role of the household in a closed economy
The households are the final consumers of goods and services produced by the firms. They create demand in the market and according to their tastes and preferences. The firms produced and supplied goods in the market, as per their demand. Therefore, households determine the production line of a country.
by his death.
4. Christianity teaches that believers will experience
Heaven or Hell, Jesus, God
Explanation:
something like that..?
Nancy is a white woman who believes all races are equal, and she is committed to civic groups that promote diversity. She is walking down the street and passes a white man. She acknowledges him with a nod. She sees a black man coming down the street, and she crosses to the other side of the street to avoid passing by him because his blackness makes her feel unsafe. Robert Merton would describe Nancy as a(n) a. timid bigot. b. fair-weather liberal. c. all-weather liberal. d. active bigot.
5.
In entrepreneurship, the potential for profit offsets
A.
the investment of research.
B.
the risk of innovation.
C.
the labor of business.
D.
the stress of organization.
Answer:
C
Explanation:
Answer: C
Explanation: I had received the same question and the program summed the explanation up by saying the potential earnings made from being an entrepreneur negate the labor or hard work of your business
Who were the first European settlers in North America
Answer: Leif Eriksson
Explanation:
What is one of the main ways that cutizens can participate in a democratic government
Answer:
The Founding Fathers founded America upon the basis that the government exists to protect and defend people’s basic rights and that if the government fails to do so, the nation has the right to form a new government.
With that, the Framers created a series of mechanisms that make that possible. It is a broad system that makes it possible for all citizens to participate in a certain way. There are many ways to participate:
The main one is to vote in local, state and national elections.
Citizens can influence their representatives by signing petitions defending a certain point or asking something.
Another way to influence representatives is to lobby for laws that are of interest.
Citizens are also allowed to protest as a way to participate politically, protests can be in a form of marches, boycotts, sit-ins, and other forms.
And also, the citizen can run for office or hold public office.
All of these methods are important, citizens have to vote and make their voices heard through their representatives or directly by protests. Democracy is made by all of us.
Explanation:
what Italian city made the textiles that the Ottomans found so valuable?
Answer:
So here's another example of non-Europeans supporting the Renaissance: The Venetians exported textiles to the Ottomans. They were usually woven in other cities like Florence, and the reason Florentine textiles were so valuable is that their color remained vibrant.
Explanation:
Which of these cultural groups is MOST strongly defined by a national boundary?
Persians
Kurds
Basques
Hispanics
Jews
Answer:
The correct answer is kurds