Answer:
B
Explanation:
The particles in the solid aluminum vibrate and are tightly packed, and the particles in liquid water slide past each other. The particles in the liquid water vibrate and are tightly packed and particles in the solid aluminum slide past each other.
Hope this helps, have a good day : )
How are the scientific method and the engineering method similar?
Both methods identify failure points.
Both methods construct a hypothesis.
Both methods focus on designing things.
Both methods work on finding solutions to problems.
The answer is Both methods work on finding solutions to problems. Because the science is trying to get the right thing and engineering is trying to solve the problem and get right thing and is the same with the science
Explanation:
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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A car is going on the 210 freeway going west at 80 mph. The car then slow down to 50 mph. As the car merges to the 605 freeway going south at 50 mph. How many changes in velocity was their?
Answer:
1
Explanation:
when he merged
when he slowed down he didn’t change direction which is a key part of velocity so that doesn’t count
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
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:
Water’s chemical formula is . One atom of bonded to two atoms of . The hydrogen atoms are 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. This separation
of charge on of the molecule is called
word bank:H2O,oxygen,oppiste ends,hydrogen,attached,polarity
please help me!!!! or my mom will ground me for 2 weeks :(
Materials with small, connected pores are _____.
A. Impermeable
B. Permeable
C. Unsaturated
D. Saturated
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And God bless you! :)
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Match the term with the definition.
Group of answer choices
Compressibility
Flammability
Heat of combustion
Toxicity
A) How easily can a substance be set on fire
B) Measure of how much heat is given off when a substance is burned
C) The ability of a substance to damage or harm an organism
D) Measure of how much the volume of matter can decrease under pressure
whats the order?
Answer:
here are your answers
Explanation:
compressibility ( D )
flammability( A )
heat of combustion ( B )
toxicity ( C )
True or False: As air masses move, they rarely change temperatures and/or moisture levels.
Can someone please help me with this it's for a grade.
Answer:
The Answer is 'D'
Explanation:
The diagram on the down side shows the behavior of the particles of a liquid so I suppose it is the ocean. While the top diagram shows the behavior of the particles of a gas so I am sure it's the air. Therefore I chose the last diagram because it describes exactly how you wanted in the question, which is the Ocean's water evaporating to become gas or the 'air' as we say
Thank you and I hope you like this answer!
I have 11 protons, which element am I?
A. Silicon
B. Fluorine
C. Argon
D. Sodium
Answer:
D. Sodium
Explanation:
We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).
Magnesium (Mg) has two electrons in its outermost energy level.
Oxygen (O) has six. How can a Mg atom bond with an O atom?
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There is a big push right now in trying to rely on nonrenewable resources for the majority of our energy needs. Should we even try to power the world with 100% renewable resources? Justify your reasoning
Answer: Non-renewable energy comes from sources that will run out or will not be replenished in our lifetimes—or even in many, many lifetimes.
Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas. Carbon is the main element in fossil fuels. For this reason, the time period that fossil fuels formed (about 360-300 million years ago) is called the Carboniferous Period.
All fossil fuels formed in a similar way. Hundreds of millions of years ago, even before the dinosaurs, Earth had a different landscape. It was covered with wide, shallow seas and swampy forests.
Plants, algae, and plankton grew in these ancient wetlands. They absorbed sunlight and created energy through photosynthesis. When they died, the organisms drifted to the bottom of the sea or lake. There was energy stored in the plants and animals when they died.
Over time, the dead plants were crushed under the seabed. Rocks and other sediment piled on top of them, creating high heat and pressure underground. In this environment, the plant and animal remains eventually turned into fossil fuels (coal, natural gas, and petroleum). Today, there are huge underground pockets (called reservoirs) of these non-renewable sources of energy all over the world.
Advantages and Disadvantages
Fossil fuels are a valuable source of energy. They are relatively inexpensive to extract. They can also be stored, piped, or shipped anywhere in the world.
However, burning fossil fuels is harmful for the environment. When coal and oil are burned, they release particles that can pollute the air, water, and land. Some of these particles are caught and set aside, but many of them are released into the air.
Burning fossil fuels also upsets Earth’s “carbon budget,” which balances the carbon in the ocean, earth, and air. When fossil fuels are combusted (heated), they release carbon dioxide into the atmosphere. Carbon dioxide is a gas that keeps heat in Earth’s atmosphere, a process called the “greenhouse effect.” The greenhouse effect is necessary to life on Earth, but relies on a balanced carbon budget.
The carbon in fossil fuels has been sequestered, or stored, underground for millions of years. By removing this sequestered carbon from the earth and releasing it into the atmosphere, Earth’s carbon budget is out of balance. This contributes to temperatures rising faster than organisms can adapt.
_____ relating to the separation of charges in a molecule
___ meaning to repel water, literally “fear of water”
___ this term describes the force of attraction between adjacent water molecules.
___ meaning attracted to water or literally “water loving”
___ term describing the tensional force created by water at its boundary with air
word bank: surface tension, cohesion, hydrophobic, hydrophilic, polarity
1. polarity
2. hydrophobic
3. cohesion
4. hydrophilic
5. surface tension
what do you mean by cohesion ?cohesion is an attractive force of measure where molecules are stick to each other and it is caused by cohesive force between like molecules.
It is an intrinsic property of a molecule, derived by its shape, structure, and electric charge distribution.
When cohesive molecules are become closer to each other, the electrical attraction between these molecule holds them together.
This forces are responsible for surface tension. For example mercury is a cohesive substance, strongly attracted to each other, bead together, sticks to itself when it flows.
When cohesion and adhesion combinedly work, it will lead to capillary action.
Hence, when water climbs up the interior of a thin glass tube or the stem of a plant, Cohesion holds the water together and adhesion helps the water molecules stick to glass.
Learn more about cohesion, here:
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When the boat is placed on the scale, how does its weight compare to the weight of the water it displaced?
Answer: It'll be lighter than when it is put on the water.
Explanation: Cause when a boat needs to move, it usually takes water into the engine, and then propulses it bk out.
how are elements in the same group in the periodic table alike
Answer:
D. They have similar chemical properties
Explanation:
That's because they have the same number of electrons in the outer orbital
What is the relationship between parent cells and daughter cells.
Answer:
Explanation:In particular, eukaryotic cells divide using the processes of mitosis and meiosis. Mitosis is common to all eukaryotes; during this process, a parent cell splits into two genetically identical daughter cells, each of which contains the same number of chromosomes as the parent cell.
A parent cell is the cell that divides during cell division to produce two daughter cells. The two daughter cells produced during mitosis share the same genetic makeup as the parent cell. In meiosis, the daughter cells have half as many chromosomes as the parent cell and a distinct genetic makeup.
What is parent cell ?A parent cell that is a progenitor of other cells or the first in a line of growing cells, as well as a cell that divides to produce two or more daughter cells.
The cell that divides into two daughter cells during cell division is referred to as the mother or parent cell. The mother cell's genetic makeup is carried over into the two daughter cells created during mitosis.
An organism's reproductive cells are called gametes. They are additionally known as sex cells. Male gametes are referred to as sperm, whereas female gametes are referred to as ova or egg cells. Each haploid cell that makes up a gamete has one copy of each chromosome.
Thus, A parent cell is the cell that divides during cell division to produce two daughter cells.
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please help me answser this, its a photo
o element
o subscribe
o coefficient
Answer:
I believe it is a element
.........
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:
The table shows the densities of four samples, each of the same volume.
DENSITIES OF SAMPLES
Sample Density (g/cm3)
W 5.1
X 1.7
Y 7.3
Z 3.5
Which sample has the greatest mass?
Answer:
Its Y
Explanation:
Which of the materials in the chart originally came from fossil fuels?
Group of answer choices
Acrylic
Cotton
Nylon
Polyester
Viscose
Answer:
Polyester
Acrylic
Nylon
Are all made of fossil fuels.
HELPPPPP
How does the acceleration of an object affect its force?
using distance and can help you identify the position of something
Answer: Length and width
Explanation:
Answer:
Length and width
Explanation:
Which of the following represents a type of change (physical or chemical) that is different from the rest?
Rusting of metal after being exposed to water
Hydrogen and oxygen combine to make steam
Water vapor condenses to form water droplets
Release of gas when a particular candy is dropped in water
Answer:
rusting of metal after being exposed to water
Explanation:
Classify the following substances as:
Pure Substance – Solution – Mechanical Mixture –
Suspension –
Milk
Coffee (black)
Soil
Sugar
Lemon juice
Salad Dressing
strong acids and bases can be harmful to both plants and animals in our waterways. which of the following is not a consequence of acidity ?
Answer:
I think b is the correct answer
Explanation:
Answer:I think maybe C? I don’t know... I am in 6th grade and I don’t know what grade science this is...
Explanation:
How do substances move across the cell membrane?
Answer:
The plasma membrane by diffusion
Explanation:
Materials move within the cell's cytosol by diffusion, and certain materials move through the plasma membrane by diffusion
A batter hits two balls during practice. Ball A travels 10 meters, while ball B travels 12 meters. The batter decides to hit ball A with less force. How will this change the motion of ball B?
The motion of ball B will increase.
The motion of ball B will decrease.
The motion of ball B will stay the same.
The motion of ball B will become the same as ball A.
Answer:
C. the motion of ball b will stay the same
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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