The post-collision velocity of the ball is 0.25m/s. The ball follows the law of conservation of momentum.
What is conservation of momentum?The law of conservation of momentum states that the amount of momentum remains constant. The momentum is neither created nor destroyed, but can only transform through the action of forces as described by Newton's laws of motion.
Initial Momentum = Final Momentum
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Here, the external force is zero, so this will follow the law of conservation of momentum of system.
The mass of ball (m₁) = 4kg and with initial speed (u₁)= 9m/s
mass of pin (m₂) = 3.0kg with zero initial speed
Now, let the final speed of ball = v₁ and final speed of pin (v₂) = 12m/s
Now, by applying momentum conservation
m₁u₁ + m₂ × 0 = m₁v₁ + m₂v₂
4.0kg × 9.0m/s = 4.0kg × v₁ + 3.0kg × 12m/s
36.0kgm/s - 36.0kgm/s = 4.0 × v₁
So, final speed of ball (v₁) = 0.25m/s
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32. A group of students make a claim that body systems work together to maintain the human body. To support their claim, the students present evidence comparing cells and tissues in the muscular system with those in the skeletal system. They say that the movement of arms and legs is caused by the contraction of muscles connected to bones. This is evidence that body systems work together to maintain the human body.
Which statement can be used as evidence to support the group's claim?
A. Cells in the nose and mouth filter air breathed into the lungs.
B. Cells in the brain produce signals that control the movement of the eyes.
C. Cells in the mouth, stomach, and small intestine chemically break down food.
D. Cells in the walls of the heart and blood vessels allow blood to pass throughout the body.
The statement that can be used as evidence to support the group's claim is that cells in the brain produce signals that control the movement of the eyes. So the correct option is B.
Why is the statement correct?The statement is correct since we are talking about systems in the body being connected to maintain the body. The example of signals being sent through neurons to the eye muscles for eye movement to take place is a good example of the interconnection between two systems to maintain the body.
The connection between different areas of the body is important in a good functioning of the body, since the systems by themselves could not monopolize all the functions. The nervous, bone, and muscular systems, among others that we have, are connected in one way or another to be able to function as a whole.
Therefore, we can confirm that the correct option is B. Cells in the brain produce signals that control the movement of the eyes.
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Biochemical oxygen demand is a measure of the
Answer:
A measure of the amount of oxygen necessary to decompose organic material in a unit volume of water. As the amount of organic waste in water increases, more oxygen is used, resulting in a higher BOD.
Explanation:
How can technology challenge a global problem such as food insecurity?
Answer: Biotechnology can do this by helping to protect crops from weeds, insects, and other pests, biotechnology has helped to lower the likelihood of failure.
Explanation:
Biotechnology is the application of biology to the problem-solving and product-making processes. The most popular method is genetic engineering, which enables researchers to change an organism's DNA as they see fit.
The environmental impact of agricultural development has been diminished thanks to improvements in crop productivity and food security brought about by plant biotechnology.
Providing farmers with easier access to technology could help address the global crisis of hunger and food insecurity. According to the World Health Organization, genetic engineering has the potential to improve food production, nutritional quality, storage stability, and pest resistance.
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15. Examine the image below.
3 States of Matter
Which of the following statements is false concerning states of matter and kinetic energy?
A. Fewer particles indicates there is more kinetic energy
B. As temperature increases so does kinetic energy
C. As temperature decreases particles move closer together
D. As the number of particles increases so does kinetic energy
Examine the following images, the false concerning about states of matter and kinetic energy are:
(A) Fewer particles indicates there is more kinetic energy.
(B) As temperature increases so does kinetic energy.
(C) As temperature decreases particles move closer together
What is difference between solid, liquid and gas?Solid molecules are held in fixed pattern but they are vibrating. And they are closely packed.
Liquid molecules packed close together in a random fashion, and free to move.
Gaseous molecules are widely separated and move at great space.
(A) We will have higher velocity or speed if we have less mass. This indicates that bigger particles with higher mass travel at a slower rate. Smaller particles with less mass travel faster.
(B) The average particle kinetic energy rises as an object's temperature rises. The thermal energy of the item grows as the average kinetic energy of its constituent particles rises. As a result, as an object's temperature rises, its thermal energy rises as well.
(C) The transition from a liquid to a solid state is known as freezing. Thermal energy is lost when the liquid cools. Its constituent particles, therefore, decelerate down and converge. Attractive forces start to trap particles, and crystals of a solid form.
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What is form?
A. A mark that has length and direction
B. Shape with height, width, and depth
C. The area between and around objects
D. The way a surface fells or looks
Anyone have an answer for this question>?
A student is testing isopods’ response to light. Isopods (also known as pill bugs or sow bugs) are crustaceans that breathe through organs that need to be kept moist. The results of the experiment show that the isopods move away from light and gather in dark areas as soon as they hatch. Select two statements that explain whether this behavior by the isopods is innate or learned and what adaptive advantage this behavior may have.
A. This behavior appears to be innate, because the isopods could not have learned the behavior during the experiment. The animals exhibited this behavior as soon as they were exposed to the light, right after they hatched.
B. This behavior has an adaptive advantage for isopods because dark areas in nature are usually moist. Those isopods that moved to dark, moist areas were more likely to survive and pass the genetic trait to their offspring.
C. This behavior appears to be learned, because the isopods only exhibited this behavior after they were exposed to the light in the experiment.
D. This behavior is artificial and therefore does not have an adaptive advantage for isopods in nature, because those isopods that moved to dark, moist areas would more likely become food for predators and would not survive.
The behavior of isopods has an adaptive advantage for them because dark areas in nature are usually moist. Those isopods that moved to dark, moist areas were more likely to survive and pass the genetic trait to their offspring. Thus, the correct option is B.
What is Adaptive advantage?An adaptive advantage is a reproductive advantage in an organism that derives from being well-suited to the specific environment in which it lives. Adaptive advantage is likely to result in an organism that is producing more offspring than those organisms without the adaptive advantage.
Isopods show adaptive advantage because isopods move to dark areas away from light which are usually moist. The isopods that moved to the dark, moist areas were more likely to survive and pass the genetic trait to their offspring than other isopods.
Therefore, the correct option is B.
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The parent cell has 46 chromosomes how many caulk be in each daughter cell in mitosis
Answer:
Explanation:
23 because they only get half the chromesonses
What is the number of ATP produced from 5 molecules of glucose going through glycolysis?
Five molecules of glucose produces 20 molecules of ATP and consumes 10 molecules of ATP during the process of glycolysis.
What is Glycolysis?
Glycolysis is the process during which glucose molecule is broken down into simpler products to produce energy. It produces two molecules of pyruvate with ATP, NADH and water molecules. The process takes place in the cytoplasm of the cell and it does not require oxygen molecules. It occurs in both the aerobic and anaerobic organisms.
One molecule of glucose yields four molecules of ATP in total during one cycle of glycolysis. Since, 2 ATP molecules are used up in the first phase of glycolysis, there is a net gain of two molecules of ATP.
Therefore, for 5 molecules of glucose, there will be production of 20 molecules of ATP and consumption of 10 molecules of ATP.
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1. What symptoms is Nicholas experiencing?
Answer:
Severe abdominal pain after eating
what is a structure that develops in the mesoderm and allows for more complex internal organ formation
The structure that develops in the mesoderm and allows for more complex internal organ formation is coelom.
what is coelom?
The coelom develops within the mesoderm during embryogenesis. In most animals, the coelom (or celom) is the major bodily cavity that surrounds and contains the digestive tract and other organs.
What are the functions of coelom?
Coelom acts as a shock absorber and protects against mechanical shock. It allows the body organs to move more freely and protects them from damage caused by minor bends by cushioning the internal organs.The coelomic fluid also helps in gaseous transport and transport of nutrients and waste products.Coelom provides the additional room that organs require to grow and function. Because of coelom, things like heart pumping, bearing a kid in the womb, and so on are conceivable.The structure that develops in the mesoderm and allows for more complex internal organ formation is coelom.
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There are two main ways in which molecules are transported into and out of cells: active transport and passive transport. Which of the following is an example of active transport?
Answer:
Explanation:
The uptake of glucose in the intestine of the human body and also the uptake of minerals or ions into the root hair cells of the plants
the chemical ______ for neon is NE
Which pressure system moves cold air in closewise motion
Answer:
Low pressure systems
Explanation:
Earth’s surface contains a variety of landforms, formed by weathering and erosion. Which of the following describes a change to Earth’s surface due to weathering? Choose the three that apply.
The following statement below describes a change to Earth’s surface due to weathering :
A. plants creating a crack in a rock formation
B. rocks along the beach being reshaped by wave action.
F. glaciers scraping rocks across the land
What is a Wave?This is referred to as a disturbance in a medium that carries energy without a net movement of particles.
Weathering can be defined as the breaking down of rocks as a result of certain factors such as rain, heat etc. They also form different types of cracks in the rocks after which they start disintegrating into tiny particles.
This process also occurs when the rocks which are present in the beach are being reshaped by wave action and the others mentioned above which is therefore the reason why option A, B and F was chosen as the correct choice.
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The options are:
A. plants creating a crack in a rock formation
B. rocks along the beach being reshaped by wave action
C. sand being blown to a new location by the wind
D. sediments moved from place to place by a river
E. rain washing soil down a steep hill
F. glaciers scraping rocks across the land
Place the following labels in order indicating the passage of sound waves and their conversion to fluid waves through the ear and hearing apparatus.
Click and drag the terms from the left into the spaces provided on the right. Arrange them so they accurately display the pathway of an assertory repulse in chronological order.
Passage of sound in the correct order is;
auricle, auditory canal, tympanic membrane, malleous, incus, stapes, oval window, scala vestibuli, cochlear duct, scala tympani, secondary tympanic membraneFor the second image, from left, clockwise:
The impulse travels to the primary auditory cortex in the superior margin of the temporal lobeThe impulse travels from the cochlea along the cochlear nervethe impulse then travels to the cochlear nuclei of the medulla oblongata and the superior olivary nuclei of the ponssome fibers from the cochlear nuclei extend to the inferior colliculi of the midbrainthird-order neurons head from the inferior colliculi to the thalamusHow does the auditory impulse work?As fluid moves about 25,000 nerve endings transform vibrations in the ear to impulses of electrical forms that travel along the cranial nerves and to the brain.
The impulse travels to the auditory cortex then to the cochlea to the medulla oblongata and so on.
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Why is earthquake prediction a challenge for scientists? In your answer, explain why scientists aren’t able to develop a warning system for earthquakes.
Answer:
We do not know how, and we do not expect to know how any time in the foreseeable future. USGS scientists can only calculate the probability that a significant earthquake will occur (shown on our hazard mapping) in a specific area within a certain number of years.
Answer:
Earthquake prediction is a challenge for scientists because of the complex and variable nature of earthquakes. They can be caused by a number of factors, including tectonic plate movement, volcanic activity, and changes in the Earth's crust. These factors can interact in complex ways that make it difficult for scientists to develop a warning system for earthquakes.
Earthquakes can even occur without any warning signs, making them difficult to predict. Although scientists are able to identify potential earthquake hazards, they cannot always predict when or where an earthquake will occur, making it tough to develop an effective warning system.
Scientists are constantly working to improve our understanding of earthquakes and how to predict them. However, the challenge remains due to the complex and ever-changing nature of earthquakes.
LAB REPORT, I NEED HELP WITH THIS QUESTION.
The title, abstract, introduction, methods and materials, findings, discussion, conclusion, and references are the eight sections that make up a lab report.
What is purpose of lab report?
Lab reports are an essential component of the scientific method. In order for someone who wasn't present to comprehend and repeat your results, the crucial work you did in the lab should be communicated in your lab reports. Additionally, they advise new research and experimentation, as well as changes to current techniques.
The components TITLE, INTRODUCTION, PROCEDURE, RESULTS, and DISCUSSION/CONCLUSION make up a standard report. Section headings should be in bold if you are typing your work on a computer.
The purpose of the experiment is stated in the beginning of a lab report, which also gives the reader some background information. Declare your report's topic in a straightforward and succinct manner (in one or two sentences). Give the reader any necessary background theory, prior study, or formulas.
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13. Marla has 4 cards labeled Q, R, X, and Z to represent four different elements. She knows the number of protons for each element but not the element's identity. The table shows the number of protons for each different element.
What can be concluded about the elements represented by Marla's cards?
A. Q, R, X, and Z are nonmetals.
B. Q, R, X, and Z are metals.
C. Q and Z are both nonmetals.
D. R and Z are both metals.
Marla has four cards labeled Q, R, X, and Z to represent four different elements: nitrogen, calcium, germanium, and bromine, and Q and Z are both nonmetals. Option C is correct regarding the elements.
What is the atomic constitution?The atom contains electrons, protons, and neutrons, and the electrons revolve outside on their orbits while the proton and neutron are present in the center. The proton and electron numbers are the same in the neutral atom, so from the proton number, the atomic number of the element can be determined. Here, Q (nitrogen) and Z (bromine) are nonmetals, the R (calcium) is a metal, and the X (germanium) is a metalloid.
Hence, Option C is correct regarding the elements, as Q and Z are both nonmetals.
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In two or more complete sentences, compare the four different types of organic molecules in living organisms. Write your answer in the essay box below.
Answer: The four main groups of biologically important organic compounds are carbohydrates, lipids, proteins and nucleic acids.
Explanation:
One of the keys to success for Mendel was using pea plants. Explain how using pea plants allowed Mendel to control mating?
Mendel used pea plants in his experiments in which he was able to control mating because of the pollination characteristics of the pea plant.
What is Mendel's genetics?Mendelian inheritance of Mendel's genetics refers to certain patterns of how the traits or characteristics are passed on from the parents to their offspring.
Mendel used garden pea plant (Pisum sativum) in his experiment of how the characters or traits transfer from one generation to the next generation. Mendel had various reasons to use pea plants for his genetic experiment study such as the observability of the pea plant's traits, ease of reproduction etc. However, the main reason for him using garden pea plant is because these plants allowed him to have controlled mating that is what made the traits more controllable and therefore Mendel was sure about his observations and results.
It was possible because the pea plants, during their flowering periods, are protected from the alien pollinators, therefore he could control the pollination process in the pea plant, which was a crucial part in terms of accuracy and reliability of the results.
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What causes Huntington's
disease?
A. a mutation of a repeated codon CAG that
repeats 40 or more times this
B. a mutation causing an inability to break
down fatty tissue around the brain
C. an altered shape of hemoglobin where it
folds incorrectly
Answer: A.) A mutation of a repeated codon CAG that repeats 40 or more times
Explanation:
With time, Huntington's disease impairs certain areas of the brain's functionality. It is something that a person inherits from their parents. It frequently becomes fatal after up to 20 years of progressively worsening symptoms.
A huntingtin protein gene mutation is the root cause of Huntington's disease. The cytosine, adenine, and guanine (CAG) DNA building components repeat far more times than they should due to the flaw. A parent with HD has a 50/50 chance of passing the HD gene to each of their children.
Initial signs of Huntington's disease frequently include:
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what is an organism that has the ability to use an atmospheric gas to produce an organic nutrient
Answer:
An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers.
Explanation:
How would the bonding of a purine with a purine alter the dna molecule
A purine interacting with another purine would be problematic for the structure of the DNA molecule.
One of the two categories of nitrogenous bases found in DNA is purines; the other are pyrimidines.
Adenine (A) and guanine (G) are examples of purines, and they invariably couple with thymine (T) and cytosine (C), which are complementary pyrimidine bases.
DNA molecule. In the DNA molecule, pairings of two purines, such as adenine and guanine or guanine and guanine, would result in a bulky structure that would not fit into the double helix properly. The hydrogen bonds between the two strands of DNA would be broken as a result, which might result in a break in the DNA strand and mutations.Purine-purine bonding is therefore not conceivable in a DNA molecule because DNA's structure is highly particular and meticulously controlled to ensure its stability and function. For DNA replication and transcription to work appropriately, which is crucial for the transmission of genetic information and maintenance of life, the right matching of purines with pyrimidines is required.learn more about purine here
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is biotechnology a new science? support your answer with specific examples
Biotechnology is not a new science but has always been applied by man in such processes as the fermentation of foods.
What is biotechnology?Biotechnology is the process whereby living organisms are applied in industrial or technological processes to produce materials that are required by man for his use.
Biotechnology is a very old science because humans have from ancient times used microorganisms to produce various goods that are needed by man.
For example, biotechnology is seen in the ancient process of bread-making and fermentation of foods.
Even though humans might not have known this, these are all instances of biotechnology.
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- Select All Similarities Between Replication, Transcription, and Translation.
Replication, Transcription and Translation Requires a DNA Template.
Replication, Transcription and Translation Requires a RNA Template.
Replication and Transcription Requires a DNA Template.
Replication and Transcription Requires a RNA Template.
Replication and Translation Requires a DNA Template.
Replication and Translation Requires a RNA Template.
Transcription and Translation Requires a DNA Template.
- Transcription and Translation Requires a RNA Template.
M
The similarity between Replication, Transcription, and Translation is the fact that Replication and Transcription require a DNA Template (Option C).
What are Replication, Transcription, and Translation?Replication is the duplication of the genetic material, Transcription can be defined as the generation of an RNA template for a given cell function and Translation is the generation of proteins ready for their use in the cell.
Therefore, with this data, we can see that Replication, Transcription, and Translation are distinct cellular processes that have differential functions but both Replication and Transcription are similar in the sense both use a DNA sequence.
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Select the components of the cell theory. (Choose all that apply.)
Group of answer choices
A. The cell is the basic unit of life for living things.
B. All things living and non-living have cells.
C. All living things are composed of one or more cells.
D. All cells have the same internal structure.
E. All cells come from pre-existing cells.
Answer: A. and C.
Explanation: All living organisms are composed of one or more cells
Write a paragraph describing the primary differences between plant and animal cells. Be sure to include a discussion of the various organelles specific to each cell and how they differ between plant and animal cells.
The difference between animal and plant cells is that they contain different organelles, among these are the chloroplasts that plant cells contain and animal cells do not.
What are the differences between animal and plant cells?Each of these cells will have their own requirements, which is why they will have different types of organelles to be able to meet these requirements. Among the differences will be that plant cells will have chloroplasts to be able to generate their own food since they cannot obtain it by other means, so they will manufacture sugar through sunlight.
In plant cells it will have a cell wall that will be surrounded by a cell membrane. While animal cells will not have this cell wall.
Therefore, we can confirm that plant cells and animal cells will have differences in their content, function and organelles.
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Answer:
The primary differences between animal and plant cells concern the types of organelles present within them. Although these cell types are similar in that they’re both eukaryotes, plant cells have several structures not present in animal cells: chloroplasts, amyloplasts, and cell walls.
Explanation:
p foster
Which is NOT a type of
point mutation?
B. chromosomal mutations
Answer:b
Explanation:
function of vertebrate chromosomes
Answer: The function allows dna to copy itself
If the sequence 3' TCGTA 5' was used as a template in DNA replication, what would be the sequence of bases on the newly synthesized strand?
Answer: Sequence will be AGCAT.
Explanation:
DNA replication, as used in molecular biology, is the biological process that creates two identical copies of DNA from a single original DNA molecule. Its mechanism is different in eukaryotes and prokaryotes.
The DNA sequence that is duplicated when mRNA is produced is referred to as a template strand. It refers to the strand that is utilized by the enzymes responsible for DNA replication or RNA transcription to attach complementary nucleotides.
DNA polymerases, which require a template and a primer (beginning) and synthesis DNA in the 5' to 3' orientation, are the enzymes responsible for creating new DNA. One new strand (the leading strand) is created during DNA replication in one continuous piece. Small fragments make up the other (lagging strand).
So, According to the Chargaff's Rule and Complementary bases. A pairs with T and G with C.
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