Which of these statements is TRUE about a nonrenewable energy resource? A. Its supply will never run out. B. It is used up faster than it is made. C. It cannot be burned as fuel. D. It can be replaced faster than it is used.
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9. Which is true of a radioisotope that is used to date rock formations?
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Answer:
Radiometric dating or radioactive date is the method that uses radioisotope to date the formation of a rock. The age of the rocks will be determined.
Explanation:
Radioactive deterioration is a natural process and results from the unstable atomic core, which releases bits and parts.
These radioactive particles are released as (there are many types). This decline process results in a more equilibrated nucleus, which makes the atom stable when the number of protons and neutrons balances.
This radioactivity is suitable for dating, as a radioactive "parent" item is constantly decaying into a stable "daughter" element.
A single mineral grain or a whole rock may be dated. There are techniques by which the sample is excited in a nuclear reactor and then measured with a mass spectrometer. The isotope (such as in the argon-argon scheme).
Others put mineral grains under a special microscope, fir in the grains with an ionising laser beam that releases the mineral and the isotopes.
The isotopes are measured by a mass spectrometer inside the same machine (an example of this is SIMS analysis).
HELP ILL MATK YOU AS BRAINLEST
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Answer:
Tissues And Organ Systems
Explanation:
The greenhouse effect of carbon dioxide is at present greater
than that of water vapor.
True/False
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At present, the greenhouse effect of carbon dioxide is not greater than that of water vapor. Thus, the given statement is false.
The amount of effect that water vapor has on the greenhouse effect is about 40-50 percent while with carbon dioxide, it accounts to 25 percent. The significant difference between them shows the different impacts on the greenhouse effect.
Both of them cause the same effects of heat, however, water vapor being a greenhouse gas is inevitable and natural. It is much needed for life to sustain on earth, however, the numbers have increased causing an alarming rate of change that may not be good.
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PLEASE HELP ME : IT'S ABOUT SCIENCE
Energy is the ability to do work, and to do work means to move something. Every time you or any of your cells move (which is all the time), you are using energy. Humans get all of our energy from eating things. Plants get their energy from the sun. In fact, nearly all the energy on our planet comes from the sun.
Because the sun is a giant fusion reactor, it constantly bombards Earth with energy, which is transferred, stored, and used in many ways. Energy conversion is the transfer of energy from one form to another. For example, chemical energy is stored in the cells of green plants through a process called photosynthesis. This chemical energy started as solar energy, which was converted through a chemical process. The light energy breaks down the chemical bonds in carbon dioxide molecules and converts them to oxygen and carbohydrates (molecules of hydrogen and carbon). When you eat something, the muscles in your body use this stored chemical energy from the sun by splitting the carbohydrate molecules to gain their stored, potential energy.
Most of the energy on Earth comes from____
A) chemicals.
B) the sun.
C) photosynthesis.
D) carbohydrates.
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The sun gives off radiant energy onto earth
if liquid is under pressure and above its atmospheric boiling point, a leak below the liqudi level will result in
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When a liquid is under pressure and above its atmospheric boiling point, a leak below the liquid level will result in a vaporization of the liquid in the pipe.
This vaporization is due to the pressure of the liquid being greater than the atmospheric pressure, which increases the boiling point of the liquid and causes it to evaporate.
When the liquid evaporates, it will leave a vacuum in the pipe which causes the liquid pressure to drop, allowing more vapor to escape.
This cycle will continue until all of the liquid is vaporized, or the pressure in the pipe drops below the atmospheric boiling point of the liquid.
To prevent this from happening, it is important to keep the pressure of the liquid higher than the atmospheric pressure of the system.
This can be done by using a pressure relief valve, which is designed to reduce the pressure in the pipe if the liquid pressure gets too high.
The pressure relief valve will also reduce the amount of vaporization that occurs, as it will stop the pressure from increasing any further.
It is also important to make sure the liquid level is above the leak, as this will prevent any more liquid from escaping.
In summary, if a liquid is under pressure and above its atmospheric boiling point, a leak below the liquid level will result in vaporization of the liquid in the pipe.
This can be prevented by using a pressure relief valve, and ensuring that the liquid level is above the leak.
Using these methods, it is possible to keep the liquid pressure safely above the atmospheric boiling point and prevent any vaporization.
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which of these minerals would be the main component in the cement slab in your house?
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The main component in a cement slab in a house is typically Portland cement.
Key points:
Portland cement is a type of hydraulic cement that is commonly used in the construction of buildings, bridges, roads, and other structures.It is made by heating a mixture of limestone and clay to high temperatures, a process known as calcination.The resulting material is ground into a fine powder, which can be mixed with water, sand, and gravel to form concrete.The concrete is then poured and leveled to form the slab.The cement reacts with water to form a paste that binds the other materials together, creating a strong and durable building material.Portland cement is also used in other types of construction, such as in the production of mortar and stucco.Other types of cement such as blended cement can be used too, depending on the requirement and the availability of the raw materials.Learn more about cement slabs here:
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What is your opinion on Mercury element
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Answer:
Mercury is an liquid metal
Explanation:
Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum.
Symbol: Hg
6. Draw the structural formula for the compound with the condensed formula CH3-COCH2CH3. What type of compound is this?
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A hydrocarbon that contains four carbon atoms with single bonds is a butane. In this case, its name has to end with -one because it contains a ketone functional group. Therefore, its name is butanone.
The structural form of the butanone is
Given that the compound is formed by Carbon, Oxygen, and Hydrogen molecular compounds because they are formed by nonmetals.
What are the implications of the existence of extremophiles for the search for extraterrestrial life?
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The existence of extremophiles has significant implications for the search for extraterrestrial life. Extremophiles are organisms that can thrive in extreme environments, such as high temperatures, acidity, or pressure. Their presence suggests that life can adapt and survive in conditions previously thought to be inhospitable.
These findings expand our understanding of the potential habitability of other planets and moons in our solar system and beyond. For example, extremophiles found in environments like hydrothermal vents on the ocean floor or in Antarctica's dry valleys provide clues about the conditions under which life can exist. By studying extremophiles, scientists can gain insights into the limits and possibilities of life in extreme environments..
The discovery of extremophiles also highlights the importance of considering a wider range of environmental conditions. In summary, the existence of extremophiles broadens our understanding of the potential habitability of other celestial bodies and influences our approach to searching for extraterrestrial life.
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How many spaces have been left for the possible discovery of new elements?
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this is the answer to ur question hope is helpful
The resulting net force of an object is represented below. →10 N Which most likely represent the forces acting on the object?
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Explanation:
.........................
what functional groups are present in phenacetin
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Phenacetin contains several functional groups, including an amide, an ether, and an aromatic ring.
Phenacetin is an organic compound that is often used as a pain reliever and fever reducer. It has the chemical formula C₁₀H₁₃NO₂ and a molar mass of 179.22 g/mol.
Phenacetin contains several functional groups, which are groups of atoms that give the molecule its characteristic chemical and physical properties.
The functional groups present in phenacetin include:
Amide: Phenacetin contains an amide functional group (-CONH-), which is a combination of a carbonyl group (-CO-) and an amino group (-NH2). The amide group in phenacetin is located at the nitrogen atom in the middle of the molecule, which is attached to one of the benzene rings.
Ether: Phenacetin also contains an ether functional group (-O-), which is a combination of an oxygen atom and two alkyl or aryl groups. The ether group in phenacetin is located at the carbon atom that is attached to the amide group and the other benzene ring.
Aromatic ring: Phenacetin contains an aromatic ring, which is a ring of atoms with alternating double and single bonds. The aromatic ring in phenacetin consists of a six-carbon ring with alternating single and double bonds, attached to the amide group and the ether group.
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Daphne is a pilot for a package delivery service. As her plane takes off and travels away from the Earth’s surface, its gravitational potential energy increases. Which three factors affect the plane’s gravitational potential energy?
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Answer:
its height relative to some reference point, its mass, and the strength of the gravitational field
Explanation:
Gravitational energy is the potential energy associated with gravitational force, such as elevating objects against the Earth’s gravity. The potential energy due to elevated positions is called gravitational potential energy.
The factors that affect an object’s gravitational potential energy are the following; its height relative to some reference point, its mass, and the strength of the gravitational field it is in. For instance, consider a wallet lying on a table, it has less gravitational potential energy than the same wallet lying on top of a taller cupboard, and yet lesser gravitational potential energy than a heavier wallet lying on the same table.
If an object lies at a certain height above the Moon’s surface, it has less gravitational potential energy than the same object lying at the same height above the Earth’s surface because the Moon’s gravitational force is weaker.
Lana drew the diagram below to model asexual reproduction. Based on Lana's diagram, which statement explains the results of asexual reproduction? A. The offspring are not genetically identical to the parent, because each offspring receives only half of the chromosomes from a single parent. B. The offspring are not genetically identical to the parents, because two parents each contribute half of their chromosomes to each offspring. C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes. D. The offspring are genetically identical to the parents, because two parents each contribute a complete copy of their chromosomes to each offspring.
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Based on Lana's diagram, the correct statement that explains the results of asexual reproduction is C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes.
What happens in asexual reproduction?In the diagram, the parent cell divides into two identical daughter cells, each of which contains a complete copy of the parent cell's genetic material.
This type of reproduction, where a single parent produces offspring that are genetically identical to itself, is called asexual reproduction. It is the process by which many unicellular organisms, such as bacteria and some protists, reproduce.
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When Earth’s axis points away from the sun, the _________ Hemisphere has the longer days of summer.
Nort
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Answer: northern hemisphere
Explanation: I looked it up. Plus I took a test with this question and when the teacher went over the answer i got it right.
Which statement accurately describes the movement of Earth’s plates due to convection currents?
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Answer:
Volcanic eruptions.
What type of system is impacting weather in Houston?
A) High pressure
B) Low pressure
C) Warm pressure
D) Cold pressure
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Answer:
a) high pressure
that is the answer i got, but wait for a few more answers before you write the answer
find the number of h2o molecules of a 1.40l sample of h2o gas at stp
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there are 3.77 x 1022 H2O molecules in a 1.40 L sample of H2O gas at STP.
At STP, the volume of 1 mole of any gas is 22.4 L.
This means that the number of moles of gas can be calculated by dividing the volume of the gas by 22.4 L. The number of moles of H2O gas in a 1.40 L sample can be calculated as follows:
1.40 L ÷ 22.4 L/mol = 0.0625 mol H2O
To find the number of H2O molecules in 0.0625 moles of H2O, we can use Avogadro's number, which is 6.02 x 1023 molecules per mole.
This gives us:
Number of H2O molecules = 0.0625 mol
H2O x 6.02 x 1023 molecules/mol = 3.77 x 1022 H2O molecules
Therefore, there are 3.77 x 1022 H2O molecules in a 1.40 L sample of H2O gas at STP.
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food choices in all societies are driven by an inborn preference for what food flavors?
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There may be some universal preferences for basic taste sensations, food choices in societies are a complex blend of biological, cultural, and individual factors.
Food choices in all societies are not solely driven by an inborn preference for specific food flavors. While taste preferences do have a biological component, food choices are influenced by a complex interplay of various factors, including cultural, environmental, social, and individual factors.
That being said, there are certain taste preferences that are commonly observed across many societies. These are often referred to as the basic taste sensations, which include sweet, sour, salty, bitter, and umami (savory). These basic tastes are thought to be universally recognized and experienced by humans due to their biological significance.
The preference for sweet flavors is believed to be innate and is associated with the perception of energy-rich foods. This preference may have evolutionary roots as sweet tastes are typically found in ripe fruits, which are a good source of energy. Similarly, the aversion to bitter tastes is thought to be an innate response to potentially toxic substances that often have a bitter taste.
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A farmer wants to start growing sweetcorn on his farm. He has found out that sweetcorn grows best in soil with a pH value of approximately 7.5. Explain how he can use the knowledge of acids, alkalis, and neutralisation to find out the pH value of his soil to make sure he gets the best crop possible
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Answer:
The process to use this knowledge is explained as below:
Explanation:
1. Farmer should use an indicator to check the pH value of the soil of the field of the farm.
2. If the field or the farm has alkali soil add acid to reduce the pH value.
3. If the soil of the farm is acidic for the crop add alkali to increase the pH value.
4. It will be a neutralization reaction and changes the pH value of the farm.
5. Weather/leeching into the surrounding soil/plant or animal waste will lead to a change in pH value over time.
6. The pH value will need to be regularly monitored and adjusted.
define noble gases ?
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Answer:
The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore they rarely react with other elements since they are already stable
which type of change occurs when the electrons of two atoms interact to form a chemical bond?
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draw a three-dimensional representation (using wedges and dashed lines) of acidic acid (ch3cooh?)
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The three-dimensional representation (using wedges and dashed lines) of acetic acid (CH₃COOH) is in the image attached.
The wedge represents a bond coming out of the plane of the paper towards you, and the dashed line represents a bond going into the plane of the paper away from you. In this representation, the hydrogen atoms and the hydroxyl group are both in front of the plane of the paper, while the carbon and oxygen atoms are behind the plane.
The wedge is used to indicate that the hydrogen atom attached to the carbon is closer to you, while the dashed line indicates that the oxygen atom is further away from you. This is just one of many possible ways to represent the three-dimensional structure of acetic acid.
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what is a radioactive isotope
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Answer:
radionuclide is an atom that has excess nuclear energy, making it unstable. This excess energy can be used in one of three ways: emitted from the nucleus as gamma radiation; transferred to one of its electrons to release it as a conversion electron; or used to create and emit a new particle from the nucleusAnswer:
Is a atom that has to much nuclear energy. Which makes it unstable
How does the amount of fertilizer affect how many potatoes a plant produces?
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Answer:
Excess fertilizer alters the soil by creating too high of a salt concentration, and this can hurt beneficial soil microorganisms. Over- fertilization can lead to sudden plant growth with an insufficient root system to supply adequate water and nutrients to the plant
Explanation:
Atoms in a solid are in continuous vibrational motion due to thermal energy. At room temperature, the amplitude of these atomic vibrations is typically about 10-9 cm, and their frequency is on the order of 1012 Hz. (a) What is the approximate period of oscillation of a typical atom? (b) What is its maximum speed?
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Due to thermal vibrations, an atom in a solid can move at a maximal speed of about 6.28 x 10² cm/s.
(a) The period of oscillation of a vibrating object is the time it takes for one complete cycle of motion. The frequency of the atomic vibrations is given as 1012 Hz, which means that there are 1012 oscillations or cycles per second. Therefore, the period of oscillation can be calculated using the formula:
Period = 1 / Frequency
Substituting the given value of frequency, we get:
Period = 1 / 1012 Hz ≈ 10⁻¹² seconds
So, the approximate period of oscillation of a typical atom in a solid is about 10⁻¹² seconds.
(b) The maximum speed of an atom in a vibrating motion can be calculated by multiplying its amplitude of vibration with its frequency. The amplitude of vibration is given as 10⁻⁹ cm and the frequency is given as 10¹² Hz. However, it is important to note that the motion of an atom in a solid is not simple harmonic motion, as it is subject to various forces and interactions with neighboring atoms.
Assuming simple harmonic motion, the maximum speed of the atom can be calculated using the formula:
Maximum speed = amplitude x 2π x frequency
Substituting the given values, we get:
Maximum speed = (10⁻⁹ cm) x (2π) x (10¹² Hz) ≈ 6.28 x 10² cm/s
So, the maximum speed of an atom in a solid due to its thermal vibrations is approximately 6.28 x 10² cm/s.
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Identify what kind of cell or cells Andrea and Kamar are examining. Then, describe what is happening to the cell or cells.
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Cell or cells Andrea and Kamar are examining is plant cell
Cells are building blocks of the living thing
Andrea and kamar are examining is plant cell and when plant entre in cytokinesis a cell plate has form between the two daughter cell because unlike plant cell and which are squishy and they can't just pinch at the middle and separate into two daughter cells and after all organelles are distributed equally among two daughter cell and new cell wall form around cell plate separating the two daughter cells
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newton's 3rd law: for every_____there is an_____and_____reaction
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There are total three laws of newtons, first law of newtons, second law of newton and third law of newton. Therefore, for every action there is an equal and opposite reaction.
What is newton's third law?Newton's first law is also called law of inertia. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
Third law of newton states that for every action there is an equal and opposite reaction.
Therefore, for every action there is an equal and opposite reaction.
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Diffusion of water across the cell membrane is called ____
a. Diffusion
b. Osmosis
c. Concentration
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Answer:
B Osmosis
Explanation:
What is the final step in scientific polling?
A. interpreting the results
B. selecting the sample
C. presenting carefully worded questions
D. identifying the universe
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Answer:select and control A. interpreting the results
Explanation: