Answer:
b
Explanation:
that's the answerer
reduces frictions creation of thermal energy
A: lubricant
B: electric heater
C: cell phone
HELP I HAVE TO SUBMIT IN 5 MINS!!!!!!! :( I HAVE NO IDEA!!!
Maria walked on a beach made mostly of sand. She walked barefoot
on the beach early in the morning, and the sand was cool. When she
walked in the same area in the afternoon, the sand was hot.
Which statement best describes why the temperature of the sand
increased?
The statement that the atoms in the sand were moving more quickly best describes why the temperature of the sand is increased. The relationship between kinetic energy and temperature is explained here.
What is the relationship between kinetic energy and temperature?The temperature of a body is directly proportional to the kinetic energy. The energy acquired by those molecules which are in motion is called the kinetic energy.
The radiation of the sun falls on a number of objects on our surroundings. The objects absorb this energy till afternoon due to which they become hot.
When Maria walked in afternoon, the sand was hot as its particles have gained the kinetic energy due to which they move rapidly from one place to another. So that the sand feels more hot in the afternoon.
Thus the atoms in the sand were moving more quickly best describes the increase in temperature of the sand.
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The age of the seafloor __________as you move away from the mid ocean ridges to deep ocean trenches
A decreases
B increases
C does not change
Answer:
stays the same
Explanation:
because the ocean floor usually doesn't spread instead the ocean floor plunges into deep under water canyons called deep ocean trenches.
What is the random mixing of gas molecules called?
O A. Volume
O B. Temperature
C. Diffusion
O D. Pressure
Answer:
C. Diffusion
it is called diffusion
Can someone answer this pleasee it’s free 15 points
I don’t know
but thank u for the points
I need points hehe
Did you know?
Hawaii is the Widest State in America!!!!!!!
Solvent: Will give brainliest
Answer:
Solvent is 1.00 liter of water.
Answer:
It would be the water i think rlly srry if im wrong thats just what i got
Explanation:
because a solvent would be the one dissolving
HELP ME PLEASE !!! I.D.K WHAT TO DO :((( Will mark brainliest please !!
Answer:
bri me jose my new account
Explanation:
Question 16 (6 points)
Match the following elements with the correct answers.
Column A
Column B
a Francium
1.
Which element has the largest electronegativity?
2
Which element has the biggest atomic radius?
b. Nonmetals
3.
C Fluorine
4
From which types of elements is it more difficult
to pull away a valence electron?
Which type of elements has lower ionization
energy?
What element has an oxidation number of +3?
d. Helium
5.
e. Metals
6.
What element has 2 valence electrons?
f. Aluminum
Answer:
1.) Fluorine
2.) Francium
3.) Nonmetals
4.) Metals
5.) Aluminum
6.) Helium
Explanation:
The bond order is equal to the number of the bonding pairs of electrons in an
ionic bond.
OA. True
OB. False
Answer:
False
Explanation:
Just trust up I just did it
Both the stomach and the small intestine are involved in the digestion of food.
The churning of food by stomach muscles and peptidase enzymes in the small
intestine both break food molecules into smaller molecules.
Which statement best describes changes to food during digestion?
Answer: I think the answer is The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes.
Explanation: Because the muscles would make the food smaller and the enzymes have a chemical change to it because it changes the molecules in the food.
The chemical processes in food digestion results in the formation of new
substances.
The statement that best describes the changes in food during digestion is;
The churning of the food is a physical process, which results in physical changes while the peptidase results in chemical changes of the food.
Reasons:
The given processes in the digestion of food are;
Stomach: Food churning is the process by which the small intestine vigorously turns ingested food.
Small intestine: The action of the peptidase enzyme is to increase the rate of the digestion of food.
Therefore;
The churning of the food is a physical process, which results in physical changes while the peptidase results in chemical changes of the food.
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The possible question options obtained from a similar question online are;
The churning of the food and peptidase action both results in chemical changes.The churning of the brings about a chemical change, while the peptidase results in a physical change.The churning action brings about physical change, while the peptidase brings about chemical change.Both the churning action and the action of the peptidase result in chemical change.what is C2H8 ? please hurry
(CH4=methane)
(C2H2=acetylene)
Answer:
Carbon carbon | C2H8 - PubChem.
Explanation:
Brainliest plz :)
Answer:
Carbon carbon | C2H8
Explanation:
happy to help
A can of soda contains many ingredients, including vanilla, caffeine, sugar, and water. Which ingredient is the solvent? caffeine sugar vanilla water
Answer:
Water
Explanation:
Water is universal solvent it can disolves other things
From the can of soda containing many ingredients, including vanilla, caffeine, sugar, and water, the solvent is water.
What is a solvent?A solvent is a substance that dissolves other substances. This solvent is usually in liquid form.
Water is universal solvent, this implies that water dissolves almost every substance.
Thus, from the can of soda containing many ingredients, including vanilla, caffeine, sugar, and water, the solvent is water.
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Which of the following is a stable ion that exists under ordinary conditions?
N3-
Al+
Li2+
F2-
Answer:
Hmm 65
Explanation:
The solids and liquids with the strongest intermolecular forces of attraction will have the
lowest melting and boiling points.
a. TRUE
b. FALSE
I need help on these 3 questions really fast
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Answer:
10. The wavelength of the color red is 650 × 10⁻⁹ m
11. The frequency of the color red is approximately 4.6122 × 10¹⁴ Hertz
12. The corresponding energy is approximately 3.058 × 10⁻¹⁹ J
Explanation:
10. Given that the wavelength, λ, of the color red is 650 nm, and one nanometer, nm = 10⁻⁹ m, we have;
The wavelength of the color red = 650 × 10⁻⁹ m
11. The frequency, v, of the color red is obtained from the relation, v = c/λ
Where;
c = The speed of light = 299,792,458 m/s
∴ v = 299,792,458/(650 × 10⁻⁹) ≈ 4.6122 × 10¹⁴ Hertz
12. Given that energy emitted by light, E = h × v, where E = 6.63 × 10⁻³⁴ J/s, we have;
E = 6.63 × 10⁻³⁴ J·s × 4.6122 × 10¹⁴ Hz ≈ 3.058 × 10⁻¹⁹ J
Therefore, the corresponding energy, E ≈ 3.058 × 10⁻¹⁹ J.
May someone pls help me with this!
Answer:
Explanation:
1. Chemistry
2. Atoms
3. Anode
4. Cathode
what is the reaction type of 3ZnS+ 2AlP = 1Zn3P2 + 1Al2S3 ?
Answer: double displacement
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The balanced chemical equation is:
[tex]3ZnS+2AlP\rightarrow Zn_3P_2+Al_2S_3[/tex]
Thus as ions get exchanged , it is double displacement reaction.
what would be the colour of litmus in sodium carbonate?
will make brainliest
Answer:
the color of the litmus paper will turn into blue color because sodium carbonate is basic in nature
Convert 48.5 grams of water to moles of water
Answer:
2.70 mol of water.
Explanation:
divide the given mass by the molar mass of water. 48.5 / 18.016g = 2.70 mol water.
Assignment Summary For this assignment, you will construct a scientific model of the water cycle to show how water is recycled through an ecosystem. Once you have drawn your model on a poster board, you will write one to two paragraphs explaining how water is transferred within and between organisms and the environment. Background Information Water is a very important compound. Organisms need water to carry out life-maintaining processes such as growth and development. Without water, living things will not survive. Water continually flows among the atmosphere, land, water, and living organisms. This process, called the water cycle, allows water to be recycled as it moves through Earth’s spheres. Materials Assignment Instructions Step 1: For this project, you are expected to submit the following: 1. Your model of the water cycle 2. One to two typewritten paragraphs describing the water cycle Step 2: Prepare for the project. a) Read through the guide before you begin so you know the expectations of this project. Pay particular attention to the instructions you need to follow to create a model on your poster board. b) If anything is not clear to you, be sure to ask your teacher. Step 3: Gather materials for the model. a) Start with a blank poster board. Be sure to put your name on it. b) You may either draw the parts of the water cycle or print images to construct a model on your poster board. Gather any drawing tools that you will need, or print any images you want to use. Step 4: Create a model of the water cycle. a) Your model should include bodies of water such as lakes and oceans, organisms, air, and land. b) Draw arrows indicating how water moves within an ecosystem and between organisms and their environment. Be sure to include the Sun and gravity in your model. c) Include short phrases on your poster that summarize what occurs at each stage of the water cycle Step 5: Write a paragraph describing the water cycle. a) Type one to two paragraphs describing the full water cycle. Be sure to use full sentences and proper grammar.
Answer:
Explanation:
Earth's water is always in movement, and the natural water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Water is always changing states between liquid, vapor, and ice, with these processes happening in the blink of an eye and over millions of years.
edge 22
What's the final overall charge for sodium and fluoride ?
Answer:
Sodium fluoride is conceived to be composed of equal numbers of
Na+ and F− ions that are electrostatically bonded together in an extended, non-molecular array. And therefore sodium fluoride is neutral.
Explanation:
Where is the Oort cloud located?
in the innermost region of the solar system, closest to the Sun
in the outermost region of the solar system, beyond Neptune
in the region between the Kuiper belt and the scattered disk
in the region beyond Neptune, but closer to the Sun than the Kuiper belt
Answer:
Option B - in the outermost region of the solar system, beyond Neptune.
Explanation:
The Oort Cloud is an extended shell of icy objects that exist in the outermost reaches of the solar system.
Answer:
b
Explanation:
i took the test
please help me and you get Brainliest is anyone go to answer my question
Answer: mitosis results in two. meiosis results in four.
Explanation:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells
The amount of matter in an object is its
OA. Volum
OB. mass
Oc. density
OD. charge
what are three uses of oxygen ?
Answer:
Production Of Steel Plastics and textiles
Explanation:
It is many more etc
The model represents how electromagnetic radiation transmits energy.
What does the model show?
A. Many light waves traveling away from a source
O B. Two light waves traveling perpendicularly to a source
C. Several light waves circling a source
D. A single light wave traveling away from a source.
The model represents where electromagnetic radiation transmits energy should be option d. A single light wave traveling away from a source.
What is electromagnetic radiation?It is the energy that should be transmitted at the fixed velocity via the sinusoidally that varied from the electric and magnetic fields.
Here the frequency of variation of the energy should be presented by the Greek letter ν.
Hence, the option d is correct.
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The model depicts the transmission of energy by electromagnetic radiation. The model depicts a single light wave departing from a source.
What describes the light as electromagnetic waves?Light as a wave: Light is a type of electromagnetic wave that can be represented mathematically (described). A shifting magnetic field is produced by a shifting electric field, according to this paradigm. Light is produced when the electric field changes as a result of the changing magnetic field.Light can be thought of as a wave. Light is a type of electromagnetic wave. A fluctuating electric field, according to this hypothesis, generates a fluctuating magnetic field. The interaction of a changing magnetic field with a changing electric field produces light. When charged particles, such as electrons and protons, move, they generate electromagnetic fields, which transport the type of energy known as electromagnetic radiation, or light.To Learn more About electromagnetic radiation, Refer:
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What is a Conclusion?
A. What you figure out by doing an experiment
B. the group that does not take part in the Experiment
C. The data that you record during an Experiment
D. What you think is going to happen in an Experiment.
Answer:
A
Explanation:
using process of elimination, B would be, and I forget, but I think it's the controlled variable or one type of variable. C would be analysis or just data I guess. and D would be hypothesis
ANSWER ASAP What are the ions present in the compound MgO? * 1
(1 Point)
Mg2+ and O-
Mg2- and O2+
Mg+ and O-
Mg2+ and 02-
Answer:
mg+ and O-
Explanation:
HOPE IT HELPS
The statue of Liberty is made out of copper metal. When it was first constructed, the color of the copper metal was bright burnt orange.
Over time, however, it slowly developed a green color as it was exposed to air. What happened to the statue of liberty?
Explanation:
The green color of the Statue of Liberty was due to the outer surface covered with hundreds of thin copper sheets. Copper reacts with the air to form a patina or verdigis