It important that the substance DNA is placed in for electrophoresis be porous because,
DNA are placed in the electrophoresis gel, so that the pores present can limit or check the movement of the DNA by creating a surrounding in which individually DNA fragment rate of motion can vary based upon their length. The gel is nothing but a permeable matrix. The motion of charged molecule defined as the migration. The molecules migrate towards the opposite charge. The molecule having negative charge will be attracted towards the positive charge.
The porous substance in electrophoresis facilitates movement of charged particles, ensuring accurate separation based on size or charge differences.
It's important for the substance used for electrophoresis to be porous because electrophoresis relies on the movement of charged particles through a medium under the influence of an electric field. Porous substances allow the charged particles, such as DNA fragments, to move through the medium more easily, facilitating separation based on size or charge. If the substance were not porous, the movement of charged particles would be hindered or even prevented, resulting in inaccurate or incomplete separation during electrophoresis. Thus, the porosity of the substance ensures efficient and effective separation of DNA fragments based on their size or charge differences.
What is gene regulation
Answer:
the control of when and where proteins are made
Explanation:
apex
How are osmosis and diffusion alike?
A. Both require additional energy provided by channel proteins.
B. Both processes occur through permeable bilayer membranes.
C. Both processes can occur across semipermeable membranes.
D. Both allow solute molecules to move across a semipermeable membrane.
Answer:
it is C. Both processes can occur across semipermeable membranes.
Explanation:
they both equalize the concentration of two solutions into a membrane. hope this is helpful to you!
Answer:
i'm super positive its c hope you do well
How do you solve for 2/5 - 1/3?
Answer:
[tex]\frac{2}{5}-\frac{1}{3}=\frac{1}{15}[/tex]
Explanation:
[tex]\frac{2}{5}-\frac{1}{3}[/tex]
In order to subtract fractions we need to take a least common denominator of 5 and 3. This denominator must be the least common multiple of both numbers.
Multiples of 3→ 3,9,12,15,....
Multiples of 5→ 5,10,15,......
From the multiples we find out the least common number to be [tex]=15[/tex]
So 15 will be the least common denominator.
In order to make the denominator =15 for both fractions, we need to multiply the same numbers to numerator and denominator of each fraction.
⇒ [tex]\frac{2\times 3}{5\times 3}-\frac{1\times 5}{3\times 5}[/tex]
⇒ [tex]\frac{6}{15}-\frac{5}{15}[/tex]
Then we can subtract the numerators keeping the denominator same.
⇒ [tex]\frac{6-5}{15}[/tex]
⇒[tex]\frac{1}{15}[/tex]
How many ATP are generated in the electron transport chain?
o
2
ООО
32
36
eggs are used in alot of baking goods eaten over thanksgiving. eggs only have one set of chromosomes. list three vocabulary words or terms that describe the number of chromosomes found in an egg.
The 3 vocabulary words or terms that describe the number of chromosomes found in an egg are are haploid, diploid and triploid.
Explanation:
Egg is a very common ingredient which is used a lot in baking goods like making of cakes and cookies. The egg has only one set of chromosomes. There are few terms which are used for describing the number of chromosomes found in egg. The term haploid means egg having single set of unpaired chromosomes.
The term diploid means having two sets of complete chromosomes obtaining from parents’ cell. The term triploid means having an extra set of unpaired chromosomes. The case of triploid is very rare and uncommon. It happens at very rare case. It is also not stable as diploid.
Final answer:
An egg has a single set of chromosomes and is described as haploid (1n). Vocabulary words related to this include 'haploid,' '1n,' and 'gamete.'
Explanation:
The number of chromosomes found in an egg can be described using a few key terms. An egg is a gamete, which is a type of cell involved in sexual reproduction that is haploid, meaning it contains a single set of chromosomes. Three vocabulary words that describe the chromosomal number in an egg are:
Haploid: Describes a cell that has half the number of chromosomes as the diploid cells of the organism. In humans, a haploid cell has 23 chromosomes.1n: This is the notation used to signify the haploid number of chromosomes in gametes, where 'n' is the number of chromosomes in a single set.gamete: Refers to the mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.When a sperm (haploid) and an egg (haploid) combine, they form a zygote, which is diploid (2n), containing two sets of chromosomes.
5 Relate How do the structures in an organism
relate to their functions?
What does it mean when it says that aerobic respiration occurs in the cytoplasm “TO” the mitochondria???
Answer:
Kerb cycle
Explanation:
The result from mitochondria is ATP, that acts as a currency of the energy in the cell. In the cytoplasm of mitochondria kerb cycle occurs. In this process it has several other process, once it uses acetate and water to give NADH from NAD+ and gives carbon dioxide as waste. The NADH formed is fed by oxidative phosphorylation or electron transport. The outcome of these processes is oxidation of nutrients to give chemical energy in ATP form.
How did Gregor Mendel's research affect the science of his time?
A) His research was not appreciated by the scientific community until after he died.
b )His results could predict heritability in plants but not animals.
c) His research included detailed studies on polygenic traits.
d) His focus on pea plants showed that pea plants have very few heritable traits.
Answer:
The correct option is A. His research was not appreciated by the scientific community until after he died.
Explanation:
Gregor Mendel was an Austrian monk who laid the foundation of genetics. Mendel studies seven traits from the pea plants and formed the law of segregation and law of independent assortment.
The work of Mendel was not appreciated until his death. In the 20th century, his work was eventually rediscovered and appreciated.
However, Mendel's study did not include any explanations for polygenic traits. His results could predict heritability in both plants and animals.
Sunlight that penetrates earths atmosphere heats the __ of the earth
Answer:
Surface
Explanation:
Earth absorbs infrared radiation and converts it to thermal energy. As the surface absorbs heart from the sun, it becomes warmer than the surrounding atmosphere/
A stream’s velocity is _______ at the bottom and edges. A stream’s invisible _______ load represents (on average) about 15% of the mass of material transported. A stream with many rapids and waterfalls is likely a/an _______ stream. In a meander, water flowing around the outside of a curve flows _______ than water flowing around the inside of the curve. An oxbow lake can form near a/an _______ stream. A/An _______ is likely to form where a stream deposits sediment as it enters another body of water.
Answer:
1.slowest
2. dissolved
3. youthful
4. faster
5. meandered
6. delta
Explanation:
A stream’s velocity is slowest at the bottom and edges. A stream’s invisible dissolved load represents (on average) about 15% of the mass of material transported. A stream with many rapids and waterfalls is likely a/an youthful stream. In a meander, water flowing around the outside of a curve flows faster than water flowing around the inside of the curve. An oxbow lake can form near a/an meandered stream. A delta is likely to form where a stream deposits sediment as it enters another body of water.
What is wavelength?Wavelength is the distance between two identical or similar positions it means that it is the distance between crests or trough in the adjacent cycle of the waveform.
Wavelength is denoted by (lambda).
It is measured in meter, or centimeter, or millimeters.
Mathematical
Wavelength is equal to velocity divided by frequency,
So,
Wavelength (lambda) = Velocity/frequency.
Velocity is in meter per second.
Frequency is in 1/second.
Projectile motion is a type of motion in which a object is thrown from the surface earth at some angle it will take projectile projection .
Therefore, A stream’s velocity is slowest at the bottom and edges. A stream’s invisible dissolved load represents (on average) about 15% of the mass of material transported. A stream with many rapids and waterfalls is likely a/an youthful stream. In a meander, water flowing around the outside of a curve flows faster than water flowing around the inside of the curve. An oxbow lake can form near a/an meandered stream. A delta is likely to form where a stream deposits sediment as it enters another body of water.
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A yeast cell is transported from an environment with oxygen to a completely oxygen-free environment. Which of the following answer choices best describes the metabolic changes that will occur in the yeast cell? Choose 1 answer: Choose 1 answer: (Choice A) A Glycolysis will still occur and pyruvate will undergo alcohol fermentation, but the Krebs cycle and oxidative phosphorylation will not occur. (Choice B) B Glycolysis will still occur, but pyruvate will not form, causing the yeast cell to undergo alcohol fermentation. (Choice C) C Glycolysis will still occur, pyruvate will still form, causing the yeast cell to undergo lactic acid fermentation. (Choice D) D Glycolysis will not occur and pyruvate will not form, causing the yeast cell to undergo alcohol fermentation.
Answer:
Choice A
Explanation:
Even without oxygen, glycolysis (anaerobic process), will occur as normal and produce pyruvate. Without oxygen, the Krebs cycle and oxidative phosphorylation can't occur, so alcohol fermentation (anaerobic process) will take place instead.
Which type of mutation occurs reproductive cells and can be passed to offspring
ATPase changes _____________to________________
ATPase changes ATP to ADP.
Explanation:
Transmembrane ATPases ctaalyses the import of metabolites essential for cell metabolism and export of waste products and excess solutes.sodium-potassium ATPase and Hydrogen-potassium ATPase are examples of transmembrane ATPases.
Na+/k+/ATPase is crucial in maintain cell membrane potential H+/K+/ATPase is important in acidifying the contents of the stomach. There are five different types of ATPase.
They are F-ATPase, V-ATPases, A-ATPases, P-ATPases and E-ATPases are the five types. F-ATPases is found in mitochondria and chloroplasts while V-ATPase is found in eukaryotic vacuoles.
How are mitosis and binary fission similar
Answer:
The similarity they have is that they both produce two identical cells to each other and to the mother cell, but the mechanism is totally different as binary fission takes place in prokaryotic cells while mitosis takes place in eukaryotic ones.
What explains the sequence of energy transformation during photosynthesis?
Answer:
Light energy converts into chemical energy.
Explanation:
Photosynthesis occurs in the chlorophyll-containing part of the plant. During this process, light energy from sunlight is taken by the chlorophyll pigment, which is present in chloroplast. This captured light energy takes water and carbon dioxide to produces carbohydrates as a source of food. These carbohydrates then converted into ATP molecules. These ATP molecules are stored in the form of chemical energy.
1) During dental procedures, dentists inject local anesthetics into the nerve pathway
supporting the region they are working on. These local anesthetics block Nat (sodium)
channels. Explain in detail the process of a typical action potential, and how local
anesthetics prevent the transmission of pain impulses to the brain.
Explanation:
Drugs like Novocaine, an ester, inhibit sodium channel ion exchange, leading to membrane depolarization (charges equilibrium). It stabilizes the neuronal membrane preventing transmission of nerve impulses as a local anesthetic to pain centers in the CNS.
Further Explanation:
Neurons have unique structures which aid in facilitating communication by sending and receiving electrical signals very efficiently. Parts of a neuron are separated into the
dendrites which receive messages from other neurons allowing them to pass and some of the cell body which contains typical cell components like the nucleus, endoplasmic reticulum and mitochondria. The axon is an insulated (by the myelin sheath) tubular structure which acts as a bridge to price impulses to other neurons these also contain axon hillocks which are junctions between the axon and cell body Synapses are junctions where axons connect to dendrites of other neurons at these junctions chemical reactions occur in order to facilitate the passage of information as chemical signals. There are several neuron types which include sensory motor and into neurons which bridge the two.The refractory period describes a period between the initiation of an action potential where Na+ channels are closed, and immediately after the action potential’s peak. Action potentials would require an influx of more positively charged ions; these must be more than a specific threshold in order to have the cells send along more action potentials which helps with figuring out stimulus intensity.
Potassium ions readily diffuse out of the cell more quickly than sodium due to the presence of more channels which allow for potassium leakage. The sodium-potassium pumps in neuronal membranes bring more Na+ out than K+ ions into the cell; with every three sodium ions pumped out two potassium ions are brought in- this is in order to maintain the negatively charged membranes within the cell along with the resting potential
At synaptic junctions:
The action potential travels along the membrane until the synapse where it’s electrical depolarization leads to the opening of channels allowing only sodium ions to enter these flow through a presynaptic membrane until the concentration is built up, activating ion-sensitive proteins attached to vesicles containing neurotransmitters this leads to changes in the proteins leading to the fusion with the membrane of the presynaptic cell, so vesicles are open and neurotransmitter is released. The neurotransmitter diffuses across to chemical receptors on the presynaptic cell where they bind temporarily This leads to activation of specific complexes, enabling the transmission of information. Thus, the chemical signal is transferred through this neuron as an electrical impulseLearn more about the autonomic nervous system at brainly.com/question/10386413
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Local anesthetics prevent the transmission of pain impulses to the brain by blocking voltage-gated sodium (Na+) channels, which are crucial for the generation and propagation of action potentials in neurons.
An action potential is a rapid and temporary reversal of the resting membrane potential in excitable cells, such as neurons. This process allows the transmission of electrical signals along the neuron's axon to the synapse, where it can be transferred to another neuron or to a muscle cell. The typical action potential occurs in several stages:
1. Resting Membrane Potential: At rest, the inside of the neuron is negatively charged relative to the outside, typically around -70 mV. This is due to the unequal distribution of ions across the cell membrane, maintained by the sodium-potassium pump.
2. Depolarization: When a stimulus reaches the neuron and exceeds a certain threshold, voltage-gated Na+ channels open, allowing Na+ ions to rush into the cell. This influx of positive charges reduces the membrane potential, making the inside of the cell less negative (becoming more positive).
3. Peak of Action Potential: If depolarization is sufficient, the membrane potential reaches a peak, usually around +30 mV. At this point, the Na+ channels close, and the neuron begins to repolarize.
4. Repolarization: Voltage-gated potassium (K+) channels open, allowing K+ ions to move out of the cell, restoring the negative charge inside the cell. This causes the membrane potential to return towards the resting potential.
5. Hyperpolarization: Sometimes, the cell becomes more negative than the resting potential due to the continued efflux of K+ ions. This is known as hyperpolarization.
6. Return to Resting Potential: The Na+/K+ pump and leak channels eventually restore the ionic concentrations to their resting state, and the membrane potential returns to -70 mV.
Local anesthetics interfere with this process by blocking the voltage-gated Na+ channels. When these channels are blocked, Na+ ions cannot enter the cell during depolarization, and the threshold for generating an action potential cannot be reached. As a result, the signal cannot propagate along the nerve fiber, and the sensation of pain is not transmitted to the brain.
The blockade of Na+ channels by local anesthetics is use-dependent, meaning that the drugs preferentially bind to and inhibit Na+ channels that are in their active or inactive states, which occur during neuronal firing. This is why local anesthetics are more effective when the nerve is actively transmitting pain signals.
In summary, by preventing the generation and propagation of action potentials in pain-transmitting neurons, local anesthetics effectively block the sensation of pain during dental procedures.
Process by which wastes are converted into new products and materials
Answer:
Recycling is the process of converting waste materials into new materials and objects. It is an alternative to "conventional" waste disposal that can save material and help lower greenhouse gas emissions.
brainliest plsss
Recycling is defined as the process of converting waste materials into new materials and goods where energy recovery from waste materials is often included in this concept.
What is Recycling?Recycling is defined as the process of converting waste materials into new materials and goods that involve the recovery of energy from waste materials. The recyclability of a material depends on its ability to recover the properties present in its original state.
There are three types of recycling which are:
Mechanical Recycling.Energy Recycling.Chemical Recycling.The basic steps in recycling are the collection of waste materials, their processing or manufacture into new products, and the purchase of those products which can then be recycled.
Thus, Recycling is defined as the process of converting waste materials into new materials and goods where energy recovery from waste materials is often included in this concept.
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How does lead get into water?
A-it is released into waterways with industrial waste
B-it is a byproduct of detergents interacting with organic matter
C-it occurs naturally in water
D-it leaches into water as old pipes corrode
Which part of the government has authority to enforce the clean water act?
A-president
B-congress
C-the environmental protection agency
D-U.S. forest services
Which of the following water supplies would be affected directly by groundwater contamination?
A-wells
B-lakes
C-streams
D-rivers
What role do bacteria play in an aquaponics system?
A-they transform fish waste into food
B-they enrich the water to help fish grow
C- they break down dead plant matter
D-they warn that the fish are sick
Lead can get into drinking water by entering a drinking water supply or from lead- containing piping, home plumbing or fixtures. Contamination of source water can occur due to discharge from industries that burn fossil fuels, mine, smelt, and manufacture.
that said i would go with A, or D on number one
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the plasma membrane (cell membrane) is made up of a(n)
The plasma membrane is composed of proteins, lipids, carbohydrates and other substances where the various components make it a selectively permeable barrier.
What is Plasma Membrane?Plasma membrane also known as cell membrane is defined as the biological membrane that separates and protects the interior of all cells from the external environment. It is a thin membrane that surrounds every living cell, separating it from its surrounding external environment.
The plasma membrane is called a selectively permeable membrane because it regulates the movement of substances into and out of the cell, meaning that the plasma membrane allows some materials to pass through it while at the same time it allows other materials to pass through it.
Thus, the plasma membrane is composed of proteins, lipids, carbohydrates and other substances where the various components make it a selectively permeable barrier.
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A top predator: is at the top of the food chain is not eaten by any other predators eats other consumers all of the above
Answer:
all the above
Explanation:
top predators will do all 3 things
2. Dominant trait: cleft chin (C) Mother’s gametes: Cc
Recessive trait: lacks cleft chin (c) Father’s gametes: cc
Offspring Genotypes:
Offspring Phenotypes:
% chance child will have cleft chin:
3. Dominant trait: flat feet (A) Mother’s gametes: Heterozygous
Recessive trait: arched feet (a) Father’s gametes: Heterozygous
% chance child will have arched feet:
4. Dominant trait: Brown hair (B) Mother’s gametes: Homozygous recessive
Recessive trait: Blonde hair (b) Father’s gametes: Heterozygous
% chance child will have blonde hair:
5. Dominant trait: farsightedness (F) Mother’s gametes: Heterozygous
Recessive trait: normal vision (f) Father’s gametes: Heterozygous
% chance child will have normal vision:
.2. Offspring Genotypes will be Cc or cc.
Offspring phenotypes : Cleft chin or no cleft chin.
% chance child will have cleft chin: 50%
3. % chance child will have arched feet: 25%
4. % chance child will have blonde hair: 50%
5. % chance child will have normal vision: 25%
Explanation:
CASE 1 :
Dominant trait: cleft chin (C)
Recessive trait: lacks cleft chin (c)
Father’s gametes: cc
Mother’s gametes: Cc
There are two possible combination of Gametes ,
C fom mother and c from father= Cc
c from mother and c from father = cc
Gametes of Cc Parents= [tex]\frac{1}{2}C + \frac{1}{2} c[/tex]........(i)
Gametes of cc parents = [tex]\frac{1}{2}c + \frac{1}{2}c[/tex] .........(ii)
Combining (i) and (ii) we get,
[tex]\frac{1}{2} Cc + \frac{1}{2} cc[/tex]
There fore offspring Genotypes will be Cc or cc
Offspring phenotypes :
Genotype Cc then phenotype= Cleft chin
Genotype cc then phenotype = Lacks cleft chin.
percentage chance child will have cleft chin =[tex]\frac{0.5}{1}[/tex] ×100
Therefore the chance is 50%.
CASE 2 :
Dominant trait: flat feet (A)
Recessive trait: arched feet (a)
Mother’s gametes: Heterozygous (Aa)
Father’s gametes: Heterozygous (Aa)
There are four possible combination of genotypes are =AA , Aa, Aa and aa
i.e. A from mother, A from father= AA
A from mother, a from father =Aa
a from mother, A from Father = Aa
a from mother, a from father = aa
Gametes of Aa parent =[tex]\frac{1}{2} A + \frac{1}{2} a[/tex]
Gametes of other Aa parent = [tex]\frac{1}{2} A + \frac{1}{2} a[/tex]
..................................................................................
[tex]\frac{1}{4} AA + \frac{1}{4} Aa[/tex]
+ [tex]\frac{1}{4} Aa[/tex] +[tex]\frac{1}{4} aa[/tex]
..........................................................................................
[tex]\frac{1}{4}AA + \frac{1}{2}Aa +\frac{1}{4} aa[/tex]
Offspring Genotypes will be: AA or Aa or aa
Offsprings phenotype will be:
Genotype AA then phenotype will be Flat feet
Genotype Aa then phenotype will be flat feet
Genotype aa then Phenotype will be arched feet.
Percentage chance child will have arched feet = [tex]\frac{0.25}{1}[/tex] × 100 = 25%
CASE 3:
Dominant trait: Brown hair (B)
Recessive trait: Blonde hair (b)
Mother’s gametes: Homozygous recessive (bb)
Father’s gametes: Heterozygous (Bb)
This case is very similar to the case 1 as one parent is homozygous recessive and other parent is heterozygous.
Resulting in half Bb and halve bb combination.
Genotypes will be Bb or bb
Phenotypes will be :
Genotype Bb then phenotype Brown hair
Phenotype bb then Phenotype bb.
% chance child will have blonde hair: 50%
CASE 4:
Dominant trait: farsightedness (F)
Recessive trait: normal vision (f)
Mother’s gametes: Heterozygous (Ff)
Father’s gametes: Heterozygous (Ff)
This Case is similar to case 2
it will result in one-fourth FF , half Ff and one-fouth ff combination.
Therefore Genotypes will be: FF, Ff and ff
Phenotypes:
Genotype FF then phenotype farsightedness
Genotype Ff then phenotype farsightedness
Genotype ff then phenotype normal vision.
% chance child will have normal vision: 25%
Which organelle is more noticeable after the cells lose water
Answer:
Explanation:
Lysosomes are organelles that contain digestive enzymes, which are responsible for digestion inside the cell. -They get rid of waste material and they protect the cell from foreign invaders.
Andy's teacher asked him to come up to the front of the class to demonstrate work. Which of the following could Andy do in the classroom to demonstrate work? A. Andy pushes a desk across the floor. B. Andy sits in his chair, doing nothing. C. Andy pushes against a desk, and it doesn't move. D. Andy holds a book.
Answer:
Andy pushes a desk across the floor.
Explanation:
An example of work in the classroom would be if Andy pushes a desk across the floor.
Work is done by transferring energy to an object (from Andy to the desk) by applying a force (the push), which makes the object move in the direction of the force.
If Andy sits in his chair, or holds his book, he is not applying a force that moves any object. Also, if Andy pushes his desk, but it doesn't move, work is not being done (since the object must move for work to be done).
Explain why nitrate fertilizers may not be suitable for application in soils with low redox potential
Answer:
Nitrate fertilizers may not be suitable for application in soils with low redox potential as there will be no required reduction takes place. Crops with excess nitrogen will affect the health of the consumer.
Explanation:
Redox potential (Reduction/Oxidation potential) is tendency of a chemical species to gain electrons from an electrode or loss electrons to electrode as a result of Oxidation or Reduction. Nitrogen is an important element for 'plant growth and development', but due to pollution, high nitrate concentration accumulate in the edible part of the food product and particularly when 'excess nitrogen fertilizer' has been applied. When the redox potential is very low then there is no any chance for nitrogen to get diluted which results in the excess of nitrogen content and so nitrate fertilizers may not be suitable for application in soil with low redox potential. Selection of nitratae fertilizer compatetive to the soil is very important.Final answer:
Nitrate fertilizers may not be suitable for soils with low redox potential due to denitrification, which converts nitrate into dinitrogen gas. This process leads to a loss of nitrogen from the soil and can release greenhouse gases. Waterlogged soils and excessive fertilizer use can contribute to low redox potential.
Explanation:
Nitrate fertilizers may not be suitable for application in soils with low redox potential because of the process of denitrification. Denitrifying bacteria use nitrate as an electron acceptor and convert it into dinitrogen gas, which plants cannot utilize. This leads to a loss of nitrogen from the soil, which is an essential nutrient for plants. Additionally, the conversion of nitrate to dinitrogen gas can result in the release of [tex]N_2O[/tex] greenhouse gas. Waterlogged soils and excessive use of fertilizers can contribute to low redox potential, making nitrate fertilizers less effective in these conditions.
Light-independent reactions occur in the stroma, or the thick fluid located between the grana, of chloroplasts. What is the main purpose of photosynthetic light-independent (dark) reactions?
Answer:
Carbohydrate synthesis
Explanation:
In light-independent reactions, sunlight is not used to build up carbohydrate molecules. The light-independent reaction is also called the Calvin Cycle. Light independent reactions take place in the chloroplast. Carbon dioxide diffuses from stomata into the stroma of chloroplast where fixation, reduction and regeneration takes place by using the energy of ATP and NADPH to make glucose and carbohydrate molecules.
Excluding Alaska and Hawaii, which soil type occupies the largest area on the map?
A) Prairie Soils
B) Forest Soils
C) Tundra Soils
D) Mountain Soils
Answer:
Prairie Soils
Explanation:
The vast temperate grasslands have soils that are rich, and deep. Because of this, prairie soils are the breadbasket of the world! They produce a majority of the wheat, corn, and soybean production in the US and the world. This is responsible for cooking oils, dog foods, work gloves, diapers, cat litter, soy-milk, and a whole host of products that we use every day.
A downhill skier was able to move 560 meters in 25 seconds. What is the skier's average speed? (Round your
answer to the nearest tenth of a meter per second)
The skier's average speed is
m/s
Answer: 22.4 m/s
Explanation:
Answer:
22.4
Explanation:
What did lise meitner and Otto Frisch believe happens to nuclei that Otto hahn and fritz strassman bombarded with neutrons?
Answer:
Otto Hann and Fritz Strassman was chemist. Following Enrico Fermi work, they begin to bombard uranium and also other element with the neutrons and find out series of decay products.
Explanation:
Chemical analysis was done by Hann and Lise Meitner explained the physics. After Lise Meitner was forced to flee from Nazis, Hann and Strassman continue bombarding; they found isotopes of barium among the decay products but couldn’t explain it. Following the Hann’s paper, Meitner and her nephew discovered that the split of neutrons was because of high electric repulsive energy which when put to Einstein formula [tex]\mathrm{E}=\mathrm{mc}^{2}[/tex] work out and this lead to discovery of fission reaction.Answer:
C ALBERT
Explanation:
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Chemical properties and physical properties are properties that can be measured or observed. They can only be measured or observed when matter undergoes a change to become an entirely different kind of matter true or false
Answer:yes
Explanation:
Answer:
True
Explanation:
Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. Reactivity is the ability of matter to react chemically with other substances.
Observing the size of a herd of elephants that are all the same species would be an observation at the __________ level.
A. ocommunity
B. ecosystem
C. population
D. individual
Final answer:
Observing the size of a herd of elephants that are all the same species would be an observation at the population level, as a population includes all individuals of a species within a specific area.
Explanation:
Observing the size of a herd of elephants that are all the same species would be an observation at the population level. A population is defined as all the individuals of a species living within a specific area. Therefore, when the observation focuses on a single species and its size within a particular area, this concerns population ecology. In contrast, a community would consist of multiple different species interacting in an area, an ecosystem includes both living and non-living components, and an individual would refer to a single organism.