why is newtons cradle (newtons balls) described as an “almost-ideal” closed system? explain your reasoning in 1 to 2 sentences.
Answers
The reason that newtons cradle (newtons balls) described as an “almost-ideal” closed system is because Due to the little forces that are exerting themselves onto it, it is a closed system. solely air resistance and gravity
What is the newtons cradle about?
Tn regards to the above case, it is a system that is almost completely isolated from its surroundings, Newton's cradle is referred to be an almost ideal closed system.
This indicates that the system is largely self-contained and does not interact with the environment to exchange matter or energy.
In Newton's cradle, a set of metal balls are suspended from a frame as the system. The other balls swing back and forth when one ball is pushed back and released, striking them in the process.
Therefore, The balls do not gain or lose energy during the impact since this motion is nearly completely elastic. The system is therefore almost closed and does not exchange energy with its surroundings.
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Related Questions
What must scientists assume when using scientific laws to make
predictions?
Answers
Scientists must assume that scientific laws are accurate, applicable, and based on reliable data for making predictions.
When using scientific laws to make predictions, scientists must assume certain foundational principles. Firstly, they assume that the scientific laws are accurate representations of natural phenomena and that they apply universally under the given conditions. Scientists also assume that the conditions and variables influencing the system remain constant, allowing for reliable predictions. Furthermore, they assume that the laws are based on sufficient and representative data, and that there are no unaccounted factors or biases that could significantly affect the predictions. Scientists also assume that the laws will continue to hold true in the future, allowing for the extrapolation of predictions beyond observed data. However, it is important for scientists to continuously evaluate and refine their assumptions as new evidence and knowledge emerge, promoting the progress and refinement of scientific understanding.For more such questions on Scientific laws:
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why are algae and and ferns both green
Answers
Answer:
They each contain chlorophyll that absorbs violet-blue light and reflects green light.
Explanation:
What systems can you think of? List one or two examples of things that you think might be systems
Answers
Systems can be found in various domains, such as biology, ecology, society, information, and the physical world. Examples include the nervous system, ecosystems, economic systems, computer networks, and the solar system. Systems consist of interconnected elements working together to fulfill a common purpose.
Systems are structures or sets of interconnected elements that work together to achieve a common purpose. There are various types of systems found in different domains. Here are a few examples:
1. Biological Systems:
- The nervous system: It includes the brain, spinal cord, and nerves, which work together to transmit signals and coordinate bodily functions.
- The cardiovascular system: It consists of the heart, blood vessels, and blood, responsible for circulating oxygen, nutrients, and hormones throughout the body.
2. Ecological Systems:
- Ecosystems: A complex system comprising living organisms (plants, animals, microorganisms) interacting with their physical environment (soil, water, climate) in a specific geographical area.
- Food webs: Systems that depict the interconnectedness of various organisms in an ecosystem through their feeding relationships.
3. Social Systems:
- Economic system: A network of individuals, organizations, and institutions involved in the production, distribution, and consumption of goods and services within a society.
- Political system: Structures and processes through which a society governs itself, including institutions, laws, and decision-making mechanisms.
4. Information Systems:
- Computer networks: Interconnected devices and communication protocols that enable the exchange of data and information between computers.
- Database systems: Organized collections of data and software designed to efficiently store, retrieve, and manage large amounts of information.
5. Physical Systems:
- Solar system: A system consisting of the sun, planets, and other celestial bodies held together by gravitational forces.
- Climate system: The interactions between the atmosphere, hydrosphere, biosphere, and geosphere that influence long-term weather patterns and climate conditions.
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can anyone help me with this question?
how do enzymes affect activation energy in a chemical reaction
Answers
Answer:
Enzymes lower the activation energy that is needed, making reactions happen at a lower temperature that they could without the enzyme. This speeds up the rate of reaction.
Explanation:
Answer:
they speed up the chemical reaction
PLZ ANSWER !!! DUE TODAY!!!!
what do molecules and ions move with in passive transport ?
Answers
Answer:
Also called facilitated transport or passive-mediated transport, facilitated diffusion occurs when molecules or ions are processed through spontaneous passive transport. The ions and molecules are moved across a biological membrane through certain transmembrane integral proteins.
Explanation:
There ya go!! Brainliest plss!! :))))
2. The diagram shows a cell. Which of the structures identifies this cell
as a plant cell rather than an animal cell?
A. Structure A
B. Structure B
C. Structure C
D. Structure D
Answers
Answer:
C
Explanation:
I'm not sure but I search it on Go*ogle
Compare and contrast environmental science and environmentalism.
Answers
Answer:
i cant compare them
Explanation:
Questions why is the heating in the Benedict's is test and millon test carried out in a water bath
Answers
The heating in the Benedict's test and Millon test is carried out in a water bath to maintain a constant and controlled temperature. This ensures accurate and reliable results by minimizing external factors that could influence the reactions taking place.
The Benedict's test and Millon test are both chemical tests used to detect the presence of reducing sugars, such as glucose, in a given solution. These tests involve a reaction between the reducing sugar and a reagent, which undergoes a color change in the presence of the sugar.
Heating is an essential step in both tests because it helps to facilitate the reaction between the reducing sugar and the reagent. By applying heat, the rate of reaction increases, allowing for faster and more reliable results. However, it is crucial to maintain a consistent and controlled temperature throughout the reaction to ensure accuracy.
A water bath is used for this purpose. A water bath consists of a container filled with water that is heated to a specific temperature, typically around 70-100 degrees Celsius, depending on the test being performed. Placing the test tubes containing the reaction mixture into the water bath allows the solution to be heated uniformly and consistently.
The water bath provides a stable and controlled environment, preventing sudden temperature fluctuations that could affect the reaction rate and, consequently, the test results. It helps to maintain the reaction at the desired temperature for a specified duration, ensuring optimal conditions for the reaction to occur.
By carrying out the Benedict's test and Millon test in a water bath, scientists and laboratory technicians can achieve reliable and reproducible results, allowing for accurate identification of the presence of reducing sugars in a given solution.
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What structure would you expect to find ribosomes on the surface of?
a. N
b. L
C. E
d. 1
Answers
Answer:
2
Explanation:
1. If the DNA sequence of a gene
was TACTTACCGAGCTAGACT
then what is the sequence of the
messenger RNA?
-|
Answers
Answer:
ATGAATGGCTCGATCTGA or AUGAAUGGCUCGAUCUGA
Explanation:
A-T or U
G-C
C-G
T-A
The transcript of the gene that creates the protein is known as messenger RNA (mRNA). The transcription of the DNA sequence results in the production of mRNA.
What is the funda of the DNA sequence and the mRNA sequence ?The DNA sequence and the mRNA sequence are complementary, which means that the mRNA sequence is the DNA sequence's reverse complement. The nucleotides are organised in the 5'-3' orientation in the provided DNA sequence. The nucleotides must be read in the 3'–5' orientation in order to get the mRNA sequence.
As a result, the mRNA sequence is AGACTGCCATGAAGTT. Because the mRNA sequence is composed of the DNA sequence's complementary nucleotides, it is the reverse complement of the DNA sequence.
For instance, the DNA sequence's first nucleotide, T, and its complementary nucleotide, A, which is the This is the mRNA sequence's first nucleotide. The second nucleotide of the DNA sequence is A, while the second nucleotide of the mRNA sequence is U, which is complementary to A. The sequence is consistent with this pattern.
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Apuk’we, the common cattail is a versatile native edible plant for the Ojibwe people of Minnesota. They are important to the ecosystem for many reasons. They help stabilize marshy borders of lakes and ponds, help protect shorelines from wave erosion, providing spawning areas for northern pike, provide cover and nesting sites for waterfowl and marsh birds such as the red-winged blackbird, are a food source for muskrats and beavers, and humans, too. However, where native cattails once stood, now there is a vast lawn of nonnative narrow-leaved cattails or their hybrid offspring. These new cattails are taking over wetlands once populated by the native cattails, decreasing the biodiversity in these areas.
What kind of ecological relationship exists between the native and nonnative species of cattails in the Minnesota wetlands?
A) commensalism
B) competition
C) mutualism
D) predation
Answers
Answer:
B) Competition
Explanation:
The native and non-native cattails are competing for the area.
Answer:
Predation
Explanation:
The way the question is worded, gives me the effect that the nonnative species of cattails predated the native species and ultimately, lowered their numbers.
I was torn between competition or predation, but it cannot be competition due to the effect it's having on the native species. In competition, there's obvious tension between the two, though in this scenario, the species is just lowered completely. There's a chance it could be competition though, I'm not really understanding the wording of the scenario given; that's just me though.
So, ultimately, it's predation.
What type of solvent would dissolve a nonpolar solute
Answers
Answer:
Explanation:
For example, ionic compounds, which are very polar, are often soluble in the polar solvent water. Nonpolar substances are likely to dissolve in nonpolar solvents. For example, nonpolar molecular substances are likely to dissolve in hexane, a common nonpolar solvent.
Answer:
Explanation:
Like dissolves in like, so only non-polar solutes can dissolve in non-polar solvents.
which of the following correctly lists the three stages of labor, in the proper order?
O dilation, crowning, expulsion O contractions, dilation, expulsion O contractions, dilation, crowning O dilation, expulsion, delivery of the placenta
Answers
The correct option is D ; Dilation, expulsion, delivery of the placenta.
Parturition is the birth of a child. Pregnancy, in which a baby develops inside a woman's uterus, culminates in childbirth. Labor is another name for childbirth. Human pregnancies last about nine months from conception to labor.
When labor begins, the first stage of parturition begins. Up until the cervix is fully dilated, it continues. There are two stages to this dilation:
Latent period. Cervix dilation ranges from 0 to 4 centimeters (cm).
active stage 4 to 10 cm of the cervix have dilated. At complete dilatation, the second stage of parturition begins and lasts until delivery. This stage contains two stages as well: inactive stage. The head of the infant descends into the vagina. active stage The mother feels the need to push or to quickly clench her abdominal muscles.
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pick one real-world application that uses pcr and gel electrophoresis and specifically explain how each process is used in that application.
Answers
One real-world application that uses PCR and gel electrophoresis is genetic testing. PCR (polymerase chain reaction) is a technique used to amplify a specific segment of DNA, making it easier to detect and analyze.
Gel electrophoresis is a method used to separate DNA fragments based on their size and charge. PCR and gel electrophoresis are commonly used in genetic testing to identify genetic mutations associated with diseases or to establish paternity.
For example, if a couple wants to know if their child has inherited a genetic disorder, such as sickle cell anemia or cystic fibrosis, a sample of the child's DNA can be amplified using PCR and then analyzed using gel electrophoresis to determine if the mutation is present.
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Which causes the rapid change in the resting membrane potential that initiates an action potential?A. Potassium gates open, and potassium rushes into the cell, changing the membrane potential from negative to positiveB. Potassium gates close, allowing sodium into the cell to change the membrane potential from positive to negativeC. Sodium gates open and sodium rushes into the cell, changing the membrane potential from negative to positiveD. Sodium gates close, allowing potassium into the cell to change the membrane potential from positive to negative
Answers
C. Sodium gates open, flooding the cell with sodium, which causes the membrane potential to shift form negative to positive.
What does a membrane look like?These membranes, also referred to as mucosae, line the internal cavities that have access to the outside. The interior of both the digestive tract is lined with mucous membranes. Additional examples are the respiratory, reproductive, and excretory systems.
What does membrane do?Cell membranes act as boundaries and checkpoints. Because of their semi-permeability, some substances can diffuse all across lipid bilayer but not others. Hydrocarbons like carbon dioxide and oxygen as well as small hydrophobic compounds, quickly traverse membranes.
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Which does NOT describe acid precipitation?
Multiple choice question.
A)
It increases when air pollution levels are low.
B)
It decreases the pH of lakes and other bodies of water.
C)
It can form when moisture combines with sulfur dioxide from power plants.
D)
It can be rain or snow.
Answers
Answer:
c
Explanation:
the moisture that has the sulfur will go through evaporation and then rain
"It can form when moisture combines with sulfur dioxide from power plants" is not observed in acid precipitation, hence option C is correct
One of the effects of air pollution is acid rain. Fuel combustion generates gases that combine with oxygen in the air and water vapor to create acids that eventually fall as rain on the earth's surface.
Any type of precipitation with high concentrations of nitric and sulfuric acids is referred to as acid rain. Snow, fog, and little pieces of dry material that fall to Earth can likewise represent it. Acid rain typically has a pH between 4.2 and 4.4, whereas normal rain has a slightly acidic pH of 5.6.
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Suppose you were interested in studying teen SU. Which sociological theoretical perspective or perspectives (from the module one chapters) would you use? Explain your answer as to why you would use them and how you would use them.
Answers
To study teen SU, I would use both the Functionalist and Conflict perspectives.
What constitutes these perspectives?The Functionalist perspective emphasizes the ways in which social institutions, such as families and schools, help to maintain social stability and order. In the context of studying teen SU, I would use this perspective to examine the functions that teen SU serves in society and how it contributes to maintaining the status quo.
The Conflict perspective emphasizes power struggles and the ways in which dominant groups in society maintain their power over subordinate groups. In the context of studying teen SU, I would use this perspective to examine how power dynamics between teens and adults play out in the context of SU.
Using both of these perspectives would provide a comprehensive and nuanced understanding of teen SU, including its social functions and the power dynamics at play.
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Where is the Oort cloud located?
O between the orbit of Mars and the orbit of Jupiter
O in the different orbits between the sun and Neptune
O beyond the Kuiper belt, at the farthest end of the solar system
all over the solar system and between the orbits of the planets
Answers
Answer:
Beyond the kuiper belt at the farthest end of the solar. on edgenuity 2020
Explanation:
Answer:
C
Explanation:
i took the assignment
The ____ nervous system provides an automatic response that prepares our bodies and mind to avoid harm from danger
A. Sympathetic
B. Parasympathetic
C. Integrative
D. Primal
Answers
The sympathetic nervous system provides an automatic response that prepares our bodies and mind to avoid harm from danger, the correct option is A.
The sympathetic nervous system is a branch of the autonomic nervous system responsible for the body's "fight or flight" response to perceived danger or threats. It prepares the body for action by increasing heart rate, dilating blood vessels, and redirecting blood flow to vital organs and muscles. This system releases stress hormones like adrenaline and noradrenaline, heightening alertness and arousal.
Other physiological responses include increased respiratory rate, elevated blood pressure, and enhanced sweating. These automatic responses help individuals respond quickly and effectively to potential harm or danger. Once the threat subsides, the parasympathetic nervous system counterbalances the sympathetic response, promoting relaxation and returning the body to its normal state, the correct option is A.
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Look at the slide from an oral presentation about fossils. A slide that reads, "fossils: how they help us understand the past. " there is a photo of a fossil. What should be added to this slide to make it more effective?.
Answers
Description of the fossil shown on the slide provide some background information on the specific fossil that is shown in the photo, such as what type of organism it belonged to, where it was found, and how old it is.
Explanation of how fossils help us understand the past: Describe how fossils provide evidence for the evolution of life, reconstruct past environments, or help to date the age of rocks.
Additional examples of fossils: Show more photos of different types of fossils and describe how each one contributes to our understanding of the past.
Comparison with modern organisms: Showing a photo of a modern organism that is related to the fossil, or a comparison of the fossil with a modern organism could help to illustrate how fossils can provide information on the evolution of life.
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Answer:
Description of the fossil shown on the slide provide some background information on the specific fossil that is shown in the photo, such as what type of organism it belonged to, where it was found, and how old it is.
Explanation:
in providing crossmatch-compatible blood units, all of the following antibodies are most often clinically insignificant except:
Answers
In providing crossmatch-compatible blood units, Anti-Jkb antibodies are most often clinically insignificant.
Even with a high antibody titer, anti-Jkb seldom causes severe acute or delayed hemolytic transfusion responses. This is true despite the fact that anti-Jkb is a well-defined cause of these events. Only 13 cases have been documented thus far, making it unclear what may be causing that. Most HDN caused by anti-Jkb are mild to moderate in severity and often have a favourable prognosis. A 41-year-old lady was referred to the blood bank for testing prior to an amniocentesis after a positive antibody screening test in the 13th week of pregnancy. The patient and his husband's red blood cells (RBCs) and antibodies were identified, and the arrays in the amniotic fluid were studied.
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The complete question is:
In providing crossmatch-compatible blood units, all of the following antibodies are most often clinically insignificant EXCEPT:
A. Anti-Jkb
B. Anti-P1
C. Anti-M
D. Anti-Lea
GICAL SCIENCES DIVISION INTRODUCTORY BIOLOGY 1 (BI 101) Semester 1, 2022 Practical #3 Examining water uptake by the stem.lab report sample(Title,Aim,Introduction,material,method,results,discussionand conclusion)
Answers
Title: Examining Water Uptake by the Stem in Introductory Biology (BI 101)
Aim: To investigate the process of water uptake by the stem in a plant and analyze its significance in plant physiology.
Introduction: In plants, the stem plays a crucial role in transporting water from the roots to other parts of the plant, such as leaves and flowers. This process, known as water uptake, is essential for various physiology processes like photosynthesis and maintaining turgidity. Understanding water uptake by the stem helps us comprehend plant survival and adaptation mechanisms.
Materials:
1. A healthy plant with a visible stem
2. Graduated cylinder
3. Scissors or pruning shears
4. Colored dye (e.g., food coloring)
5. Water
6. Stopwatch or timer
Method:
1. Fill the graduated cylinder with water and add a few drops of colored dye.
2. Cut the plant stem at a 45-degree angle to increase the surface area for water uptake.
3. Place the cut end of the stem in the dyed water solution.
4. Start the stopwatch or timer and observe the stem and plant for any changes in color.
5. Record the time taken for the dye to reach different parts of the plant.
6. Repeat the experiment with different plants to compare water uptake rates.
Results: Present the data collected during the experiment in a table or graph, comparing the time taken for the dye to reach different parts of the plants in each trial.
Discussion: Analyze the results and explain any differences observed in the water uptake rates among different plants. Consider factors like stem structure, plant species, and environmental conditions. Discuss the significance of water uptake by the stem in the overall plant physiology.
Conclusion: Summarize the findings of the experiment and highlight the importance of understanding water uptake by the stem in plants. This knowledge can be applied to various fields, including agriculture, plant breeding, and conservation efforts.
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mention 6 substances secreted by the body
Answers
Answer:
Saliva
Lipase
Amylase
Trysin
Pepsin
Erepsin
Explanation:
Substances? Just any substances?
Which action is characteristic of the hormone vasopressin?
Answers
ADH increases arteriole constriction and tubular permeability to water
Vasopressin, also referred to as antidiuretic hormone (ADH), is a hormone secreted by the posterior pituitary gland. Arteriole constriction and tubular permeability to water are both increased by ADH. Calcitonin and parathyroid hormone levels in the blood regulate calcium equilibrium (PTH). the hormone that aids in blood vessel constriction and aids the kidneys in regulating the body's salt and water balance. This aids in regulating both blood pressure and urine production.
Sensors (baroreceptors) in the heart and big blood vessels can identify a drop in blood volume or low blood pressure that happens after dehydration or a hemorrhage. These encourage the secretion of anti-diuretic hormones.
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im stuck on the first 2 answers
Answers
Answer:
Trees in and around Austin are uprooted from heavy wind
Explanation:
Goose island is already on the coast so it's used to salt water.
The birds won't become extinct in one day.
It takes a while for a river to be completely destroyed naturally.
Match the type of adaptation to the example
Structural Spines on a cactus:
Bird dancing for a mate:
Blubber on a whale:
Fight or Flight reflex:
Bear hibernating for the winter :
Answer blank:Structural Behavioral
Physiological
Answers
Answer:
1. s
2. b
3. s
4. p
5. b
Explanation:
s= structural
b=behavioral
p=physiological
Skeletal analysis can yield all of the following information, EXCEPT. (Choose the answer that is incorrect) Group of answer choices A: Whether or not the individual was covered in hair B: What types of repetitive behaviors the individual took part in C: If the individual suffered from an ailment D: How old the individual was at death E: How the individual died F: Sex of the individual
Answers
Skeletal analysis can yield all of the following information, EXCEPT: Option B: What types of repetitive behaviors the individual took part in it.
Skeletal analysis can provide information about the individual's age at death, how they died, and their sex. It can also provide information about their physical characteristics, such as height, build, and overall health. However, it cannot provide information about the individual's participation in repetitive behaviors or whether they were covered in hair. These characteristics would be determined by analyzing other types of physical evidence, such as hair samples or artifacts.
However, it is important to note that skeletal analysis cannot provide information about certain aspects of an individual's life, such as their personality or behavior patterns. These types of characteristics are typically determined through the analysis of other types of physical evidence, such as artifacts or written records.
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1. En una actividad pedagógica, Luis organiza una dinámica con los estudiantes de Química: para ello quien menos utilice y responda adecuadamente es el ganador: A Fernando le entrega 58.85gFe; a Jacqueline 23.05g Na; a Carlos 35.45g Cl y a Paola 27.0 g Al. Ellos deben indicar cuantos moles tienen en su muestra: Fernando dice tengo 63.0 mol Fe y gasto 1 minuto para responder; Jacqueline dice que tiene 4.0 mol Na y gasta 20 segundos; Carlos indica que tiene 3.45 mol Cl y gasta 15 segundos; Paola responde que tiene 270.0 mol Al y gasto 10 segundos. Quien tiene razón: *
A Fernando
b. Jacqueline
c. Paola
d. Ninguno tiene la razón
Answers
Respuesta:
d. Ninguno tiene la razón
Explicación:
Para convertir masa a moles, necesitamos la masa molar de cada sustancia.
Fernando (58.85 g Fe)
La masa molar de Fe es 55.85 g/mol.
58.85 g × 1 mol/55.85 g = 1.054 mol
Jacqueline (23.05 g Na)
La masa molar de Na es 22.99 g/mol.
23.05 g × 1 mol/22.99 g = 1.003 mol
Carlos (35.45 g Cl)
La masa molar de Cl es 35.45 g/mol.
35.45 g × 1 mol/35.45 g = 1.000 mol
Paola (27.0 g Al)
La masa molar de Al es 26.98 g/mol.
27.0 g × 1 mol/26.98 g = 1.00 mol
greenhouse gases do what to solar radiation?
Answers
Suppose an entire colony of lemmings is chased by a predator and most of them jump off a cliff and perish. Fortunately, a few of them don't jump and re-establish their colony (Re-established Colony) and a few of the jumpers land in the water, survive the fall and establish a second colony on a nearby island (Island Colony). Which of the following characterizes the type of change causing a reduction in the genetic variation that occurs in these 2 colonies?
Answers
The type of change causing a reduction in genetic variation in the two colonies (Re-established Colony and Island Colony) is known as a founder effect.
The founder effect occurs when a small group of individuals becomes isolated from the larger population and establishes a new colony or population. In this scenario, the lemmings that didn't jump and re-established their colony, as well as those that landed in the water and established a colony on the nearby island, represent small founding populations.
As a result, the genetic variation in these colonies will be reduced compared to the original larger population from which they originated.
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