Pls help i'll mark you the brainlest What force is needed to make ball fall on Earth if it has a mass of 13kg
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Answer:
gravity.
Explanation:
Related Questions
PLEASE HELPP!!
True or False: Non-metal is a kind of metal.
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Answer:
Explanation:
FALSE.
I hope this helps <333
:3
the temperature at which a liquid becomes a gas is called the
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What direction would this plate move? (the plate is gray in color)
options:
from West to East
from East to West
from South to North
from North to South
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Answer:
from south to north thats what it look like
Explanation:
Read the following paragraph from the section "Dreaming Of A World Deep Below."
The interior of our planet has long held a fascination for philosophers and storytellers. Some have speculated that another inhabited world lies beneath our own. In 1864, Jules Verne’s novel "Journey to the Center of the Earth" described the fictional adventures of explorers traveling under our planet’s surface. It was a best-seller. People wondered if the world Verne described below our own could be real.
Why does the author include this paragraph in the article?
Question 9 options:
to show how much scientific progress regarding the Earth's core was made during Lehmann's lifetime
to explain a number of popular theories concerning the composition of the Earth's core
to demonstrate how Lehmann's discovery confirmed what Jules Verne already knew about the Earth's core
to describe the attitudes Lehmann needed to overcome in order to introduce her work to the scientific community
Answers
Answer:
B
Explanation:
The interior planet has fascinated a lot of people so a lot of theories have been made about what's in there.
The reason author include this paragraph in the article is to explain a number of popular theories concerning the composition of the Earth's core. Thus, option B is correct.
What is acronym?
Acronym has been defined as the short form of long words such as very important person and the acronym of very important person has been VIP. The word acronym has been used to denote the short term of the word in which two or more than two words combined together to form new short word.
Acronym always starts with capital latter and the first word's letter is always capital. Capitalization has been the most important part of the writing as it has the rule of writing that the first latter of the word that starts a sentence must be capital or starts with capital latter.
The sentence has a group of sensible or meaningful word that combines together to form a complete and senseful sentence. The sentence has of several type such as positive sentence, negative sentence, exclamatory sentence as well as introgative sentence.
Therefore, The reason author include this paragraph in the article is to explain a number of popular theories concerning the composition of the Earth's core. Thus, option B is correct.
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how many neutrons does the isotope of hydrogen called deuterium have
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Answer:
The deuterium has one neutron and one proton (mass number equals 2) whereas, the far more common hydrogen isotope, protium, has no neutons in the middle.
Explanation
what is the total number of valence electrons un xenon(xe)
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Answer:
8
Explanation:
Hope this helps you :)
7. Calculate the net charge of the following atoms.
Atom A: has 6 protons and 4 electrons
Atom B: has 9 protons and 9 electrons
Atom C: has 10 protons and 14 electrons
Atom D: has 33 protons and 29 electrons
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Answer:
any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.
Explanation:
Answer:
Atom A: +2 Atom B: 0 Atom C: -4 Atom D: +4
Explanation:
We know that protons have a positive charge and electrons have a negative charge. Therefore, we will treat the electrons as a negative number. The net charge is the sum of electrons and protons.
Atom A = 6 + (-4)
because electrons as negative.
Net charge = +2
Atom B = 9 + (-9)
Net charge = 0, or neutral
Atom C = 10 + (-14)
Net charge = -4
Atom D = 33 + (-29)
Net charge = +4
Pls helppppppppppppppppppppppppp
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Answer:
The sun reflects off different parts of the moon as it orbits the earth
Explanation:
Answer:
the sun reflects off different parts of the moon as it orbits the Earth.
An octopus swims 7 km at a speed of 3 km/hr.How long does it take in hours and minutes?
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Answer:
your question is not correct
Which of the following represents the velocity of a light wave?
O A. E = fx2
O B. c = hxf
O C. E = hxf
O D. c = fx2
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Answer:
D. c = fλExplanation:
c = fλ
where" c "is the speed of light ,
• "f" is the frequency of the electromagnetic waves,
• " λ" is its wavelength.
The term that represents the velocity of a light wave is c = fx2. The correct option is D.
What is velocity?Velocity is the speed by which an object moves or do any motion. When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time.
Light waves are the movement of waves in a direction. There are two types of transverse and electromagnetic. They are divided on the way of their movement.
The velocity of the light wave is the speed at which the light wave moves in a specific direction in time. The formula is given below:
c = fλ
Where c is the speed of light.
f is the frequency of the electromagnetic waves,
λ is its wavelength.
Thus, the correct option is D. c = fx2.
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What is the health danger of breathing carbon monoxide
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Answer:
Well, it´s dangerous because it displaces oxygen in the blood and deprives the heart, the brain and other vital organs.
Explanation:
What i mean by that is that breathing carbon monoxide reduces the amount of oxygen that can be transported in the blood stream to critical organs like the heart and brain. It can also causes E.g. dizziness, confusion, unconsciousness and even death.
I hope this answered yor question, if i did misundertood the question do tell me and i will try my best to explain it. Have a nice day!! :)
A bond will form so the outermost energy level of an atom will have _____.
A. room for more electrons
B. exactly four electrons
C. the maximum number of electrons
D. the fewest electrons possible
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Answer:
D
Explanation:
the fewest electrons possible (looking for brainliest)
Answer:d
Explanation:
Question 2 Which models of the atom from task 1 are not supported by Rutherford’s experimental evidence? For each of these models, explain the experimental results that the model would predict.
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Answer:
Sorry I don't know.
Explanation:
I'm only in middle school.
What MUST always be true of the masses of the red and blue liquids?
А.
They will NEVER equal the mass of the purple liquid to the right of the arrow.
B.
They will ALWAYS equal the mass of the purple liquid to the right of the arrow.
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I have a question does Neptune have a atmosphere?
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Answer:
Neptune has a dynamic atmosphere with a shroud of cold clouds. The average cloud temperature ranges from about -240 degrees to -330 degrees F.
Jax designs an expierment to determine how the amount of sodium chloride affects the boiling point of water which is the independent /manipulated variable
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Answer:
The amount of sodium chloride.
Explanation:
This is because an independent/manipulated control is something that is changed or controlled by the experimenter. Jax has control over the change of sodium, therefore the answer is the amount of sodium chloride.
I took the test and got this answer right btw. Good luck everyone :)
In an experiment to determine how to make sulfer trioxide, a chemist combines 32.0g of sulfer with 50.0g of oxygen. She finds that she made 80.0g of sulfer trioxide and had 2.0 g of leftover oxygen. How would the chemist make 100.0 g of sulfer trioxide so that she has no leftovers?
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Explanation:
i Forgot the answer sorry but ihave that modulewhat is the second most abundant gas in the atmosphere
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Help me pls I will mark you as brain
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Which choice is an element? carbon dioxide water carbon air
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Answer:
carbon
Explanation:
Considering the definition of elements ans compounds, carbon is an element.
Elements are simple substances that cannot be broken down by common chemical methods. The atoms in an element are the same as each other, yet they are different from those in other elements. In addition, the elements are represented by a symbol and can be found in the periodic table.
On the other hand, compounds are substances that are the result of the chemical union of two or more elements. This combination makes it impossible to identify each element by its individual and original properties. Compounds can be separated by chemical action.
In summary, the element is a pure chemical substance formed from an atom, which is characterized in that it cannot be divided or transformed by a chemical reaction. Whereas a compound is a pure chemical substance made up of a particular set of molecules or ions that are chemically bound together.
So, being:
carbon dioxide: composed of carbon and oxygen water: composed of two atoms of hydrogen and one of oxygenair: composed mainly of oxygen and nitrogenthen, carbon is an element.
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¿Estás de acuerdo con que las industrias petroleas exploten petróleo en zonas de reservas naturales?
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Answer:
si estoy de acuerdo cien por ciento
Copperhead snakes can reproduce both sexually and asexually. which option describes a situation where sexual reproduction is more advantageous for the copperhead snake.
A. a new disease develops , so having more genetic variation among there off spring is an advantage.
B. a new type of pray arrives in the environment , so they have more food sources.
C. a short and mild winter makes the environment more livable for them and all the other organisms in the area.
D. they migrate to a new location where prey and shelter are more abundant and easier to find.
Answers
Answer:
Answer A:
a new disease develops , so having more genetic variation among there off spring is an advantage.
Not 100% sure but A seems the most likely answer.
Explanation:
The question is asking where sexual reproduction is more of an advantage and I'd say that having more genetic variation would be caused by sexual reproduction and not as much or at all in asexual reproduction.
with B, C, and D. It wouldn't really be an advantage to do one or the other in this context.
What will happen when we replace oxygen with nitrogen in our life while breathing and what will happen if it was in our cells? (Theory no one has ever thought)
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does the tempurture of the vinegar affect the volcano flow
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Hope this answers your question!
examine the graph to determine half life of strontium -90
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What volume of water has a mass of 1 kg?
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Answer:
the value of water is 1000
How do you separate rice grains that have accidentally mixed with flour
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Mountains form when plates _______.
collide (convergent boundary)
have faulting occur
divide (divergent boundary)
slide past each other (transform boundary
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Answer:
They form when plates collide. I hope this helps you!
Which atom generally obtains a stable configuration by sharing electrons?
phosphorus (P)
magnesium (Mg)
lithium (LI
chlorine (CI)
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Answer: Phosphorus (P)
Explanation: Phosphorous has 5 valence electrons so it will share some to become stable.
Answer: Phosphorus(P)
Why are alloys generally used to make everyday objects?
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Answer:
Alloys are often stronger and less active than pure metals. Alloys have higher melting point than pure metals.