Which of the following is a combination of more than on simple machine?
A.Pulley
B.Wedge
C.Scissors
D.Incline
Answer:
D.
Explanation:
Answer:
It is D. Incline
Which one is right pls help
Answer:
The answer is Electron
Explanation:
Answer:
the answer is electron
What causes the electrons to move and form static electricity?
moist air
dry air
friction
Answer:
friction
Explanation:
The rubbing of certain materials against one another can transfer negative charges, or electrons.
The friction generating between the surface of two objects causes the electrons to move from one body to the other and form static electricity. Hence, option c is correct.
What is static electricity ?Static electricity is the flow of electrons that occurs due to the temporary polarization of two bodies. When a conducting surface rub on other surface, they gets electrons by frictional force.
These free flow of electrons make them negatively charged. When this negatively charged body comes in contact with a non conducting surface they latter gets polarized by the electrons of negatively charged body.
The positive charges of the nonconducting surface gets attracted to the negative body and the electrons flow from the negatively charged body to the partially polarized positive body. This is called static electricity.
Find more on static electricity:
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What does the conversation of mass say about the amount of atoms in the reactants compared to the products?
Answer:
the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.
Answer:
[tex]\boxed {\boxed {\sf Atoms \ in \ reactants \ = atoms \ in \ products}}[/tex]
Explanation:
The Law of Conservation of Mass states that mass cannot be created or destroyed.
In a chemical reaction, this means the mass of the reactants (substances going in and being changed) must equal the mass of the products (new substances from the reaction).
In addition, the amount of atoms must stay the same. The atoms can and will reconfigure to form different compounds, but the number of atoms stays the same.
Which type of variable is kept the same throughout an experiment?
Constant variable
Measured variable
Outcome variable
Test variable
Answer:
Constant variable.
Magnesium is a metal with two electrons in its outermost energy level. When it becomes an ion, what happens to its valence electrons? What happens to its charge?
Answer:The answer to your question is Mg loses its valence electrons and acquire a positive charge (Mg⁺²).
Explanation:
Answer:
When it becomes an ion, it donates its valence electrons and becomes positively charged. The positively charged ion would be Mg²⁺ because it loses two electrons. It would have 12 protons and 10 electrons.
Hope that helps.
im literally gonna cry . what is this
Which of the following elements does NOT need to be diatomic to exist in nature?
A. Hydrogen
B. Oxygen
C. Carbon
D. Nitrogen
Of the first 103 elements, how many have 2 letters in their symbols?
a sample substance has the chemical formula: H2CO3 , one molecule of the sample contains __ ????
Answer:
1,6,8
Explanation:
Periodic Table- H=1.C=6,O=8
Hydrogen is H, Carbon is C, Oxygen is O
Answer:
H=hydrogen
C=carbon
O=oxygen
H- 1
C- 6
o- 8
Explanation:
How do living and nonliving things differ?
Answer:
Hey mate.....
Explanation:
This is your answer,
Living things differ from non living things through motion, action, expression, way of living and etc......
Livings things:-
1. Livings things means something that keeps on moving or doing any particular work.
2. Livings things mostly consume, remove, and reproduce through different ways.
3. Examples of livings things are humans, animals, birds, reptiles, and even the germs like bacteria, fungi, ameoba and etc....
Non Livings things:-
1. Non Living things means something that just stays like a statue usually and never move or do a particular work.
2. Non living things do not consume, remove or reproduce anything.
3. Examples of non living things are table, chair, fan, house, book etc....
hope it helps you mate....
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what is the level of organization in living things
Energy can be neither created nor destroyed. This fact means that even though energy sources can be depleted (used up), the energy in them is not destroyed. Instead, it is transformed to other forms of energy. And almost all energy resources here on Earth can have their energy traced back to the Sun’s gravitational or light energy.
Electricity is often thought of as a secondary source of energy because it must be gained by transforming some other kind of energy (a primary source). Think about where the electricity generated by a wind turbine comes from. Describe the path that wind energy takes from the Sun’s light to electricity.
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What is needed in order to create nuclear power? CHECK ALL THAT APPLY.
Uranium
Carbon
Atoms
Oxygen
Molecules
Answer:
uranium and atoms
Explanation:
If density is calculated by mass divided by volume and the mass increases, what would happen to the density of an object?
Would it increase or decrease?
How are the volvox, euglena, paramecium, and amoeba similar and different in how they move, and eat?
Answer:
Both can hunt for their food (heterotrophs), but euglena can also make their own food (autotroph) with its chloroplasts. Amoeba have pseudopods to move/eat, but euglena have flagella to move. How are euglena and paramecium similar and different? ... Both also use flagella to move, but volvox move together in colonies.
Explanation:
Answer: wattskennedy is right
Explanation:
Please look at these, i'm confused, i need the questions answered, and i need a graph or just need to know how to make the graph (idk how).
Can anyone help me out with these questions
Answer:
2. B It is the outermost layer of Earth, composed of solid rock and divided into sections called plates. 3. B The inner core is kept solid by the intense pressure of all the layers above it.
Explanation:
the hydrogen atoms are (blank) to one side of the oxygen atom, resulting in a water molecule having a positive charge on the side where the hydrogens reside and a negative charge on the other side, where the oxygen atom resides.
Answer:
gngbfvgnbgfdzfxc
Explanation:
What is the difference between a homogeneous and heterogeneous mixture?
Pollen is transferred from the stamen of one flower to the stigma of another. What has occurred?
What is the function of a cell wall?
HELPPPPP
How does the acceleration of an object affect its force?
Which one would charge faster?
I NEED HELP ASAP DON'T JUST ANSWER FOR POINTS OR YOU WILL GET REPORTED!
How many protons, neutrons, and electrons does potassium's neutral atom have?
Answer:
The number of neutrons is entirely dependent on the Mass number of the particular atom. The standard mass for potassium is 39.
Potassium is element number 19, so it has 19 protons and 19 electrons in the neutral atom. It has therefore 39-19 = 20 Neutrons.
Explanation:
Answer:
Number of Protons 19
Explanation:
Number of Neutrons 20
Number of Electrons 19
Melting Point 63.65° C
Please help ASAP I will give 19 points please help
Don’t answer if you don’t know it, if you answer that is really rude because I need the answer and only 1 more person would be able to answer not 2 people to not answer if you have no answer. I am making it clear again DO NOT ANSWER IF YOU DONT KNOW THE ANSWER
Answer:
Can you pls clarify this
Explanation:
I dont
New Orleans has an altitude at and below sea level, a latitude near the Tropic of Cancer (the equator-zone), is surrounded by water, and has no mountains near by. What would you expect the climate to be?
Answer:
Rainy, sunny and humid.
Explanation:
This separation of charge on (blank) of the molecule is called (blank).
Answer:
Polar and Non-Polar Molecules
Explanation:
The illustration shows volume levels of a liquid in a graduated cylinder before and after a mineral sample was placed into the graduated cylinder.
liquid, only, liquid, and, mineral,
According to this information, what was the volume of the mineral sample to the nearest milliliter?
9 mL
11 mL
47 mL
48 mL
Answer:
It's D.
Explanation:
Have a nice day.
Human activities can have more affect on the environment than you may think. When a dam is built, what are some of the impacts it will have on the surrounding environment?
Practice
Answer in at least 2 complete sentences.
Answer:
When a dam is built, the rest of the lake will begin to drought and remove moisture for the wildlife. Making the wildlife adapt, and in severe cases, become endangered.