how did the discovery of eris force astronomers to reconsider the definition of planet?

Answers

Answer 1

Answer:

Explanation:

They had demoted Pluto on the basis of the discovery of Eris. They also discovered that Eris had a moon. It was thought to be much bigger than Pluto. That turned out not to be true. So having accepted Eris as a planet, they had to consider carefully what to do about Pluto. It has a gravitational constant of 0.82 m/s^2 which is 8.4% of that of our gravitational pull. and slightly more than Pluto.

Later data showed that these two  objects in space were more like twins and that's what shook up the definition of a planet. You can't demote one and not the other.


Related Questions

An unknown mass is on a flat frictionless surface and a 2 kg object is attached to it with a string going over pulleyt mounted to the end of the table. Acceleration of the 2 kg object is 1.8 m/s^2. What is the mass of the object?

Answers

Answer:

Explanation:

F=ma

F in this case is the gravity acting on the 2kg object. Acceleration of gravity is 9.8 m/s^2. SF=ma, so

F = 2kg*(9.8 m/s^2) = 19.6 N

Now use this force to determine the mass of the object on the table:

F=ma

19.6 N (1N=kg*m/s^2) = m*(1.8 m/s^2)

m = 10.89 kg

abebe wants to lift a 10N object from the ground. what is the minimum force he needs to exert​

Answers

Explanation:

object has a mass, but force, newton is Unit of force.

If the value of g is taken as 10, the mass of the object here is only 1 kg. You will need a force of 10N to lift 1kg mass against the gravity ...

WHAT IS THE VOLUME OF A 5.71 G PLASTIC CUBE THAT HAS A DENSITY OF 1.15 G/CM3
DONT ANSWER i need to find out if it cant float or sink?!

Answers

Answer:

p>Whether an object will float or sink is dependent on its density, and on the density of the liquid it is placed in. In the case of water, an object with a density less than 1 g/cm3 will float. The closer its density is to 1 g/cm3, the more of it will sit below the water level.

a person lifts a package weighing 75 N if she lifts it 1.2m off the floor what work has she done ?

Answers

Answer:

W = 90 J

Explanation:

Data:

Force (F) = 75 NDistance (d) = 1.2 mWork (W) = ?

Use the formula:

W = F * d

Replace and solve:

W = 75 N * 1.2 mW = 90 J

The work done was 90 Joules.

Greetings.

How would these two particle diagrams be classified?

A-) Both are pure substances each containing one type of compound

B-)Both are pure substances containing a mixture of elements

C-) Both are mixtures containing different types of compounds

D-) Both are mixtures containing more than one element

Answers

Answer:

A-) Both are pure substances each containing one type of compound

In your own words, explain why elements
such as gold and silver are so rare to be
found in our Universe or within the Earth?

Answers

They are rare because of what they are made up of, and how gold has been mined for so long its hard to even find it any more also because of supply and demand,,

(used my own words there, hope this helps)

Your car can brake with a deceleration of 6 m/s2. The car is initially going at 40 m/s.
a) How long will it take the car to come to a full stop?

b) If the car is 5 meters long, about how many car lengths should be kept between you and the car in front of you (assume the car in front of you comes to a stop immediately).

Answers

We have that for the Question "" it can be said that how long will it take the car to come to a full stop and the car lengths before a stop is

t=6.67L=27cars

From the question we are told

Your car can brake with a deceleration of 6 m/s2. The car is initially going at 40 m/s.

a) How long will it take the car to come to a full stop?  

b) If the car is 5 meters long, about how many car lengths should be kept between you and the car in front of you (assume the car in front of you comes to a stop immediately).

Generally the equation for the Velocity is mathematically given as

[tex]v=u+at\\\\Therefore\\\\40=0+6t\\\\t=6.667s\\\\[/tex]

b)

s=ut+1/2at^2

Therefore

[tex]S=0+1/2(6)(6.7)^2\\\\S=134.67m[/tex]

Therefore

The car lengths before a stop is

L=134.67m/5

L=27cars

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John McRighteous has a mass of 90kg. Calculate johns weight.

Answers

Answer: W=M*gravity. 90 * 9.8=882N. That is the weight on Earth.

Explanation:

Calculating the weight is W=M*gravity. 90 * 9.8=882N. That is the weight on Earth.

Answer:

198.4 lbs

Explanation:

a bullet with 200g of mass, moving with velocity of 600 m/s. enters to a block of wood and stops in 0.1 sec. what is the average force bullet feels?

Answers

Finding the average force means you’ll have to multiply the mass, average velocity, and definite time soooo
200•600•O.1 = 12000 N

write answers with significant figures:
a) 17.35 g +8.498 g​

Answers

Answer:

25.9 g

Explanation:

= 17.35

8.498

________+

= 25.848 g = 25.85 g = 25.9 g

*so sorry if wrong

A motorboat accelerates uniformly from a velocity of 10.5 m/s to the west to a velocity of 6.5 m/s to the west. If its acceleration was 4.5 m/s2 to the east, how far did it travel during the acceleration

Answers

Answer:

7.4m ............................

How many newtons does a 5-kg backpack weigh on Earth?

Answers

a 5kg backpack will weigh 49 newtons on earth

Which is the best definition to describe a transfer of energy?
a)Changing energy from one form to another

b)The ability to do work and cause change

c)Stored energy or energy of position

d)The same form of energy moving from one place to another

Answers

Answer:

a

Explanation:

a matieral through which charges can flow through easily is known as what?

Answers

Answer:

the answer would be an electrical conductor

The Sun being the largest body has the highest gravitational pull on all planets however planets do not collapse into the sun this is because of A.gravitational I'll of the Earth B. gravitational pull among the planets C. gravitational pull of Moon D. the balancing force

Answers

Answer:

A:gravitational of the earth

what happens to kinetic energy as speed doubles and mass doubles

Answers

Answer:

If you double the mass of an object, you double the kinetic energy. If you double the speed of an object, the kinetic energy increases by four times. Kinetic energy can be passed from one object to another in the form of a collision....What happen to the kinetic energy of its velocity become double ? The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed is called its kinetic energy. Hence, when velocity is doubled, kinetic energy becomes 4 times.

Explanation:

Answer: It increases by four times

Explanation: If you double the mass of an object, you double the kinetic energy. If you double the speed of an object, the kinetic energy increases by four times. Kinetic energy can be passed from one object to another in the form of a collision.

A large bottle contains a number of medicinal tablets is 0.5kg. Calculate the number of tablets in the bottle?

Answers

Answer:

the answer is 5k in the bottle have

X=(150^2•sin(2•42))/9.8

Answers

Answer:

2283.3410863

Explanation:

Answer:

2283.341086

Explanation: Just plug the equation into the calculator as is

(pls help me) Which event is an example of melting? A. Wax drips down the side of a lit candle. O B. Perspiration dries on a person's skin. O C. Rain turns to ice pellets. O D. A mirror fogs up when someone takes a hot shower.​

Answers

Answer:

A. is correct thanks for sharing your question

Which force allows you to speed up, slow down, and make turns?

Answers

Answer: Friction force

Happy To help ;)

Explanation:

How can you return a negatively or positively charged object back to its neutral state?

Answers

[tex]\huge\fbox\orange{A} \huge\fbox\red{N}\huge\fbox\blue{S}\huge\fbox\green{W}\huge\fbox\gray{E}\huge\fbox\purple{R}[/tex]

[tex]\huge\underline\mathtt\colorbox{cyan}{For Positively Charged:}[/tex]

By gaining electrons from the ground, the object will have a balance of charge and therefore be neutral. Grounding is the grounding of a positively charged object and involves the transfer of electrons from the ground into the object.

[tex]\huge\underline\mathtt\colorbox{red}{For Negatively Charged:}[/tex]

If it is to have its charge removed, then it will have to lose its excess electrons. Once the excess electrons are removed from the object, there will be equal numbers of protons and electrons within the object and it will have a balance of charge.

A 1-kilogram stone is being dropped from a bridge 100 meters above a gorge.

What is the weight of the stone?
A. 1 newtons B. 10 newtons
C. 100 newtons D. 1,000 newtons

Answers

Answer:

C. 100 NEWTONS

Explanation:

just my brain being ly = brainly is the name so my brian is being ly

The weight of the stone is 10N.

To find the weight of the stone, we need to know about the gravitational force on any object due to earth.

What is gravitational force?Gravitational force is a attractive force that arises between any two objects. The objects, on the earth surface or near the earth surface, experience the gravitational force of earth. This gravitational force is Known as the weight of the object. How can we calculate the gravitational force or the weight of an object, when it's near the earth surface?

When an object is near the earth surface, its weight is mass × gravitational acceleration (g).

So, the weight of the stone= 1kg × 10 m/s²

                            = 10 N

Thus, we can conclude that the weight of the stone 100 m above a gorge is 10N.

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1. Two balloons are charged with an identical quantity and type of charge: -6.25C. They are held apart at a separation distance of 0.67m. Determine the magnitude of the electrical force of repulsion between them. I​

Answers

Answer:

The electric force between them is 878.9 N

Given:

Identical charge C

Separation between two charges  m

For finding the electrical force,

According to the coulomb's law

Here, force between two balloons are repulsive because both charges are same.

Where    N  Therefore, the electric force between them is 878.

Explanation:

write the importance of international Bureu of weights and Measures in the country.​

Answers

Answer:

International Bureau of Weights and Measures (BIPM), French Bureau International des Poids et Mesures, international organization founded to bring about the unification of measurement systems, to establish and preserve fundamental international standards and prototypes, to verify national standards, and to determine fundamental physical constants. The bureau was established by a convention signed in Paris on May 20, 1875, effective January 1876. In 1921 a modified convention was signed.

Distance between gas molecules in the case of:
-Increase in temperature
-Decrease in temperature
-Increase in volume
-Decrease in volume
-Increase in pressure
-Decrease in pressure

Answers

Answer:

-Increase in temperature: increase

-Decrease in temperature: decrease

-Increase in volume: increase

-Decrease in volume: decrease

-Increase in pressure: increase

-Decrease in pressure: decrease

Explanation:

-Increase in temperature:

● Molecules gain kinetic energy and move fast thus increasing distance

-Decrease in temperature:

● Kinetic energy of molecules decrease so they have smaller distance

-Increase in volume:

● Molecules have more space to move around so distance increase

-Decrease in volume:

● Less space, molecules collide with each other because of decreased distance thus increasing pressure

-Increase in pressure

● Molecules collide with each other and the walls of container increasing pressure so molecules move faster and it increases distance

-Decrease in pressure:

● Molecules collide with each other and walls of container less frequently so distance between molecules decrease

Max ran 100 feet in 10 seconds.
Molly ran 60 feet in 5 seconds.

1. Who ran farther, Max or Molly?

2. Who ran faster? Explain.

Answers

Answer:

for max :

100 feet in 10 secs

for molly :

60 feet in 5 secs = 120 feet in 10 secs

so, molly ran farther in the same time interval i.e. covered 120 feet where as Max covered 100 feet

Explanation:

brainliest plz

Answer:

1 no Max

2 no Molly

Explanation:

because if molly can run 60 feet in 5 second he can run 120 feet in 10 second

1)
The red arrow is pointed at different locations of an atom of nitrogen Where is it pointing to the GREATEST concentration of
atomic mass?
A
B.
В
C

Answers

Answer:

A) A (displays the nucleus)

The Nucleus holds a majority of the mass within an atom

Is it possible to burn a paper using lens? How?​

Answers

Answer:

NO Y

Explanation:

MMMMMMMMM

Why is the oort cloud important for understanding the formation of the solar system?

Answers

The Oort cloud is the proximate source of observed nearly parabolic, so-called 'new' comets entering the planetary region, and is also the presumed source of the long-period comet flux and the majority of Halley-type comets (HTCs).

The oort cloud is important for understanding the formation of the solar system.

What is oort cloud?

It is believed to be an important source of comets that can provide valuable information about the conditions and processes that were present in the early solar system.

Here,
The Oort Cloud is important for understanding the formation of the solar system because it is believed to be a reservoir of icy bodies that formed early in the solar system's history. These icy bodies, which include comets, are thought to have played a key role in the early evolution of the solar system by delivering water and other volatile materials to the inner solar system, including the early Earth.

By studying the composition and properties of comets from the Oort Cloud, scientists can gain insights into the formation and evolution of the solar system and learn more about the conditions that were present in the early solar system.

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Please Help with Acceleration graphs

Answers

Negative velocity indicates direction so on number 6 part a is moving away from starting point (positive velocity) and part c is moving toward/back to starting point (negative velocity)
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