PHYSICS MIDDLE SCHOOL

PLZ HELP Why are planets spherical?Question 10 options:


The equator has the most gravitational pull.


Gravity pulls all sides equally forming a ball


The spinning motion makes them spherical


When planets were formed the began as a ball shape

Answers

Answer 1
Answer: A planet is round because of gravity. A planet's gravity pulls equally from all sides. Gravity pulls from the center to the edges like the spokes of a bicycle wheel. This makes the overall shape of a planet a sphere, which is a three-dimensional circle.
Answer 2
Answer:

Answer:

B

Explanation:

The planet is formed by gravity pulling from every side equally, which makes the planet spherical.

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Need help in General Science II please help FAST!!!!!!!!!!!!!!!!!!The pH scale for acids and bases ranges from _____.
1-7
0-14
1-14
1-12

Automobile batteries contain _____.

sulfuric acid
hydrochloric acid
acetic acid
carbonic acid

Some acids are capable of drawing water out of an object. This process is called _____.

corrosion
dehydration
electrolysis
distillation

The strongest acid will have a pH of _____.

0
1
13
14

Any atom which no longer has a neutral charge is called a(n) _______ .

atomic or ion

Answers

Hey~ :) So, For the first one...  
1. A pH scale measures how much acidic or basic a substance is. The pH scale usually ranges from 0 to 14. .... The pH scale would be, (0 - 14), I think. SO the second one for 1. :) 

2. So, Since an automobile battery can explode or contain and cause a sulfuric acid burn. I'm thinking it would be thee 1st one for the 2nd! :) sulfuric acid

3. Electrochemical and electrolytic reduction cleaning processes, so.... they are the most common techniques utilized to halt, stabilize, and even reverse the oxidation of the metal. So Overall I think this would most-likely Be electrolysis. 

4. Is 1, because, pH of 1 (e) 

5.I am thinking this would Be ion. Because, an ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

HOPE IT HELPS!!!! :)

Please help me on this I know it’s not B this stuff is kinda hard for me

Answers

There you go again.  Newton's 3rd Law says "for every action there is an EQUAL OPPOSITE reaction.".

EQUALand OPPOSITE

If THIS MUCH force pushes the bullet THAT way, then THE SAME amount of force pushes the rifle THIS way.

The bullet pushes backward on the rifle with the same amount of force as the rifle exerts on the bullet.

What chromosomes are found in body cells but not sex cells

Answers

haploid and diploid cells

Where does the name "Black Hole" get it's name?

Answers

The "Black Hole" gets its name from the astronomical amount of gravitational force created by the black hole. This gravitational force is so great that even light cannot escape it, hence, it is completely black

nothing escapes them not even light therefore they are (dark) and  we see them be literally black holes

List examples of foliated and non-foliated rocks. Explain the difference between the two types of metamorphic rocks.

Answers

Non-foliated metamorphic rocks are rocks that have been changed by heat and pressure into rocks with a non-layered or banded appearance. Some examples of non-foliated metamorphic rocks include quartzite, marble, amphibolite and hornfels.


Non-foliated metamorphic rocks are rocks that have been changed by heat and pressure into rocks with a non-layered or banded appearance. Some examples of non-foliated metamorphic rocks include quartzite, marble, amphibolite and hornfels.

1)the magnetic field is strongest near_________of a bar magnet.a)the poles b)the center

2)the needle of compass line up with earth magnetic field and point to_________
a)earth poles b)earth equator

3)magnetic field lines that curve toward each other show_________
a)repulsion b)attraction

4)some animals have tiny pieces of ___________in their brains to help them find their way
a)magnetite b)magnetosphere

5)a magnet contain a large number of magnetic _____that are lined up and pointed in the same direction.
a)domains b)poles

Answers

Answer:

1 . a) the poles

2. a) earth poles.

3. b) attraction.

4. a) magnetite.

5. a) domains.

Explanation:

The magnetic field is strongest at the poles and very weak at the center of the magnet.

The magnetic compass will always align along the north - south poles  of the earth. North of the compass needle is attracted towards the magnetic south pole of the earth.

Magnetic Field lines begin at the north pole of the magnet and end at the south pole. Unlike poles attract and like poles repel , so they curve for unlike poles.

Magnetite is a magnetic mineral, which is present in the animal brains , enabling them to identify correct directions.

Magnetic domains are regions where individual magnetic moments of the atoms are aligned in a definite direction.
1. Is A. at the poles because thats where the magnetic field is going out then coming back into the earth to produce the magnetic field.
2. Again its A. because the compass needle is attracted to " north " which is magnetic south. It does this because opposites attract.
3. This one would be B. Because if the magnets were being repelled the magnetic field lines would look like there was a line that the field hit and bounced off of it.
4. This answer is A. the magnetite helps them migrate so they know which way is north and which way is south.
5. This answer is A. Because without the domains there wouldn't be poles on the magnetic object. 
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