Give two examples each of centripetal force
Answers
Answer:
Spinning a ball on a string or twirling a lasso: Here the centripetal force is provided by the force of tension on the rope pulls the object in toward the centre. Turning a car: Here the centripetal force is provided by the frictional force between the ground and the wheels.
Explanation:
Related Questions
What is produced during the light-independent reactions of photosynthesis?
Answers
Answer:
Light-independent reaction is a series of biochemical reactions in photosynthesis not requiring light to proceed, and ultimately produce organic molecules from carbon dioxide. The energy released from ATP (produced during the light reactions) drives this metabolic pathway.27-Jan-2022
Purpose: Utilize stored chemical energy for carbon dioxide fixation and form glucose ...
Site of Reaction: Stroma of Chloroplast
Input: ATP, NADPH, CO2
Output: G3P, ADP, NADP+
the two main function of sweat are a. to keep the body cool and to remove excess protein b. to remove waste products and to cool the body
Answers
Answer:
Then answer is A
Explanation:
The graph below shows the number of occupied
bald eagle nesting in North America between
1960 and 2007.
Which human activity most likely had the greatest
influence on the trends shown in the graph?
A. Breeding eagles in captivity
B. Allowing the hunting of eagle predators in
national forests
C. Releasing eagles into North American forests
from other continents
D.Conservation efforts, including a ban on
certain pesticides
Answers
Answer:
This is just a guess because I can't see the graph, but I think the answer is B. Don't use this though, as it's only a guess.
Explanation:
how does quartz watch give time?
Answers
quartz gives time by, oscillator in which vibrates quickly and precise frequency In around 32,768 times-second in response to the electronic charge.
Why is the sustainability of water for the future generations to come so important
Answers
Answer:
The sustainability of water for future generations is important because water is the source of life, the substance that enables all living things to survive and develop. Water is at the core of sustainable development and is critical for socio-economic development, healthy ecosystems, and for human survival itself. It is vital for reducing the global burden of disease and improving the health, welfare, and productivity of populations. Therefore, water must be sustained for future generations in order to protect and preserve the environment and to move towards a sustainable development model.
Explanation:
I hope this helps!
Why is absorption important ?
Answers
Without efficient nutrient absorption, our body won’t function properly leaving us susceptible to deficiencies and disease.
Hope this helps
You will create a molecular clock model for an arthropod gene. Follow these guidelines to make your model:
Your timeline will span from 90 million years ago to the present. The common ancestor in your model is an arthropod that lived 90 million years ago. The gene that you’ll track codes for a protein in the species’ venom.
The DNA sequence you’ll track contains 10 nitrogen bases. You can choose the order of the bases and where the mutations occur.
This gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. To build your model, calculate the estimated time period it takes for 1 base pair to mutate.
The first time period will only show the common ancestor. At the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences.
The first and third descendant species will survive for the rest of the timeline. The second descendant species was extinct 50 million years ago.
Calculate how long it will take for one full base pair mutation to occur. Explain your reasoning by constructing a mathematical equation.
Answers
Answer:
The mutations occur at a rate of 0.56 base changes every 1 billion years. If this rate stays consistent, the mutation rate can be used to determine when different lineages of a particular species split
Answer:
It takes about 17.1 Million years for a base pair to mutate at a rate of 0.76 base pairs. To get the time it takes for one full mutation to occur, you must divide 17.1 to 0.76 and multiply it by 1. So, (17.1/0.76)×1=22.5. It would take about 22.5 million years for one full base pair mutation to occur. Having this being said, the first descendant with one base pair mutation would change after 22.5 million years from the common ancestor. For the second descendant, it would take 45 million years as 22.5 time 2 is 45. 5 million years later, the second descendant will become extinct while the first descendant survives. The third descendant will take about 22.5×3= 67.5 million years. Now, the first and third descendants will survive while the second descendant is extinct.
Please mark as brainliest :)
7. Hydrogen fuel cells combine hydrogen and oxygen to produce water and energy. Assume 1 kg of fuel is used, and the mass of the water produced is 1.10 x 10-11 kg. How much energy is produced by this fuel cell? (Hint: Use E = mc2.)
Answers
Answer:
this is a hard one
Explanation:
When the air inside a school gets warmer (temperature increases) the molecules of air move faster. True or False?
Answers
Explanation:
yes this is in fact true
True
Explanation:
The molecules react to the temperature
How do the pythons affect the population of the other predators, such as bobcats and alligators? Explain your answer.
Answers
Answer:
Explanation:
Q1:
Answer:
Studies have reported that due to predation of pythons on rabbits, the population of other predators is badly affected.
Bobcats are a natural predator of rabbits thus they come in a competition with pythons for food. As pythons are more powerful so they target rabbits more easily than Bobcats. The population of Bobcats has been declined by 90% or more due to the establishment of pythons in the Everglades.
Alligator mississippiensis or American alligators are also abundant in Everglades and just like Bobcats they compete with pythons for their food. They can even kill pythons if pythons are smaller in size than them, but python will kill alligator if he is of smaller size. Although rabbits are food for both alligator and Python but Alligator is a key stone specie and it has very important ecological role, because it digs holes in land that retain water upon rainfall. These water hole provide water in the extreme dry weather and help in survival of other small specie like insects and birds.
So, we can expect the population of Alligator, Bob cats and other small insects and birds to decline rapidly if Python population kept on increasing with same speed.
-------------------------------------------------------------------------------------------------------------
Q2:
Answer:
There is no doubt that Pythons pose serious threat for both humans as well as survival of other organisms like Alligators and birds. However, I donot think that “Python challenge” is a reasonable way to kill or remove Pythons. Because It can threat the lives of many individuals who take part in competition, although they are trained but still they are nor professionals and get training of only few weeks so it is not safe competition.
There should be some strategy of introducing natural predators like Brown beers, Cougars and Alligators which can kill python naturally without staking the life of humans at risk.
Determine which type(s) of blood this patient can safely receive. Check all that apply. A B AB O Also, the patient should receive blood that is for Rh.
Answers
People who are AB can receive blood from all types of blood groups.
What is Blood group?This is the classification of blood based on polymorphisms in antigens on the surfaces of the red blood cells.
There are four types of blood groups and the AB is known as universal recipient which means it can receive blood from any of them. Also the patient should receive blood that is positive for Rh as it will not make anti-Rh antibodies which may destroy cells of the fetus.
Read more about Blood group here https://brainly.com/question/15289194
#SPJ1
Answer: B and O........ Also, the patient can recieve blood that is NEGATIVE (only)
Explanation: these are the correct options on edge, i hope this helps!! :D
Because the genetic code is nonoverlapping, a missense mutation (from a single nucleotide change) results in the alteration of _____, and the resulting protein has _____.
A. three codons; a single amino acid change
B. only one codon; a single amino acid change
C. only one codon; at least three amino acid changes
D. three codons; three amino acid changes
Answers
Because the genetic code is nonoverlapping, a missense mutation (from a single nucleotide change) results in the alteration of only one codon; and the resulting protein has a single amino acid change. The correct option is B.
In the genetic code, each codon consists of three nucleotides, and they are read in a nonoverlapping manner during translation. A missense mutation occurs when a single nucleotide change in the DNA sequence leads to the substitution of one nucleotide for another in the corresponding mRNA transcript.
Since the genetic code is nonoverlapping, a missense mutation affects only one codon, specifically the codon where the nucleotide change has occurred. As a result, the alteration caused by the mutation leads to a single amino acid change in the resulting protein. The correct option is B.
Learn more about nucleotides
https://brainly.com/question/16308848
#SPJ11
explain the principles behind the visualization of dna during the run. what's the role of the blue light? what does the amber filter do? what chemical helps make the dna visible?
Answers
Because fluorescent DNA stains are so sensitive and make it simple to quantify even very minute amounts of DNA, research labs frequently use them. An ultraviolet (UV) light source (such as a transilluminator) is utilised to stimulate the fluorescent molecules and see the DNA fragments.
Because it is not absorbed by native DNA, UV-A radiation is not very effective at causing DNA damage. Singlet oxygen can damage DNA by indirect photosensitizing reactions when UV-A and visible light energy (up to 670–700 nm) are present.
When driving off-road through haze and dust, amber filters are employed to improve visibility. Clear filters are used to protect the lights while also altering the beam pattern of a spot beam light.
Learn more about DNA:
https://brainly.com/question/28285357
#SPJ4
Which process can produce the most energy for a cell? *
Answers
Answer: respiration
Explanation:
how low-cost water leads to waste of fresh water in irrigation, industries, and homes?
Answers
Up to 50% of the groundwater we use outside is lost to the elements including wind, evaporation, and runoff brought on by ineffective irrigation techniques, businesses, and infrastructure.
How does evaporation explain itself?A liquid transforms into a gas during evaporation. It is simple to picture when puddles of rain "vanish" on a hot day and when wet clothing dries in the sun. In these instances, the sea phase is draining into a gas known as water vapor rather than really dissipating. Global evaporation takes place.
Why is the evaporation process so crucial?Wind panels, or heat from the sun, is what causes the evaporation process to occur. It takes on moisture from garden soil as well as the biggest lakes and oceans. As the water is uncovered to the sun's heat, its level will drop.
To learn more about evaporation visit:
https://brainly.com/question/5019199
#SPJ1
Cellular respiration uses one molecule of glucose to produce how many ATP molecules?
Answers
Answer:
it produces 38 atp from 1 molcule
Which statements about microevolution and macroevolution is true
Answers
Answer: The options are missing from the question.
The options are;
1) Microevolution can lead to macroevolution.
2) Macroevolution can lead to microevolution.
3) Genetic drift cannot affect microevolution.
4) Natural selection only acts on macroevolution.
The correct answer to the question is option 1
MICROEVOLUTION CAN LEAD TO MACROEVOLUTION.
Explanation:
When we talk about microevolution,we are talking about the formation of species via the process of speciation. This formation of species via speciation is made possible by natural selection,a process whereby organisms that are better adapted to their own environment survive in their environment as well as bring about) reproduce new one/species that are similar to themselves. In this process, changes occur with traits but they do so with time. On the other hand, when we talk about macroevolution,we are referring to when major group of organisms form from those groups of species of organisms that are different in a distinct way/manner.
In macroevolution large number of changes occur in the characteristics of the living organisms present,for example, the evolution of entirely new species from the ones that are previously existing. Therefore,we would say that macroevolution is the result of many microevolution processes.
A good example of this is the development of mammals from non-mammalian species or evolution of whales from terrestrial mammals.
Which of the following mutations is the most likely to be deleterious?
a. a silent mutation in an essential gene
b. a missense mutation that enhances the function of a protein
c. a switch mutation that leads to increased fertility in females
d. a frameshift mutation in an essential gene
Answers
A frameshift mutation in an essential gene will lead to change in structure or function of the protein. The change can be harmful as well. Thus, the correct option is D.
Frameshift mutation happens due to an insertion or deletion of a base pair in the gene sequence because of which the reading frame of the mRNA gets altered.
As a result of the alteration, the original amino acid gets changed to another amino acid or can cause premature end of the translation.
The amino acid that is changed due to the frameshift mutation can be either the same or can be an amino acid that causes loss of function of the protein. This can be dangerous in the case of an essential gene.
Thus, the correct option is D.
Learn more about frameshift mutations in:
https://brainly.com/question/12732356
#SPJ1
Shira is analyzing samples of red blood cells using a microscope. Her observations are shown.
Shira observes that the shape of Cell A appears normal, while Cell B appears swollen and Cell C is shrunken. The apparent shrinking of Cell C indicates the reaction of the cell to what?
Answers
The shrinking of cell indicates that the solute concentration outside the cell is high is called Osmosis.
Osmosis is one of the important parts of the transportation o minerals and nutrients and tells about the physiology of the plants and osmosis means the transportation of water from higher concentration to lower concentration that is down the gradient and also it can be defined as the movement of water from lower concentration of solute to higher
concentration of solute which is gains the gradient but in terms of solute and this transport takes place in the presence of semi permeable membrane without which osmosis is not possible so according to this in the given situation the cell C shrinks because the concentration of the solute is higher outside the cell than inside the cell which means the concentration of water inside the cell is high and as water moves from high concentration to low concentration so water will move from inside the cell to outside the cell and as water is reduced the cell will shrink and this water can be replaced by any solvent it will behave the same and it can also be said as the process of diffusion or spontaneous net movement of the solvent and this can have different effects on red blood cells.To know more about osmosis click at https://brainly.com/question/1799974
#SPJ9
Ecosystems _____ change.
A
never
B
constantly
C
sometimes
D
rarely
Answers
Answer:
b i think gllllllllllllll
g a viral neutralization test detects: group of answer choices vaccine antigens cytokines produced in response to virus infection. virus in patient samples. cytopathic effect on patient cells. patient antibodies specific for a virus.
Answers
The serum virus neutralisation (SVN) assay is a serological test used to detect the presence and magnitude of functional systemic antibodies that prevent the infectivity of a virus. The SVN assay is a highly sensitive and specific test that may be applied to influenza A viruses (IAV) in swine to measure the titer of neutralizing antibodies post-exposure, post-vaccination, or after passive transfer of maternally derived antibodies (MDA).
Neutralization tests are one of the most commonly used methods for quantifying antibodies against rabies virus (RABV). Conventional SVN methods performed in vitro are based on the inhibition of virus infectivity in cell culture in the presence of neutralizing antibodies in serum.
The SVN assay is relatively inexpensive using standard laboratory equipment, although it requires cell structure, more time and labour, and technical skill to conduct the assay compared to other serological methods.
Learn more about the neutralization test here:
https://brainly.com/question/28144910
#SPJ4
If the diameter of the afferent arterioles leading to the glomerulus increases (vasodilation) net filtration pressure will increase.
a. true
b. false
Answers
True. If the diameter of the afferent arterioles leading to the glomerulus increases due to vasodilation, which ultimately increases the net filtration pressure.
The filtration of blood occurs in the kidney, an excretory organ. The kidney is composed of numerous small units called nephrons, which is responsible for the blood filtration.
Glomerulus is part of nephron and the glomerular filtration occurs in the renal corpuscle of the kidney. This process is driven by hydrostatic and colloid osmotic pressure.
These pressures are collectively called net filtration pressure, which is influenced by the diameter of afferent arterioles.
If the arterioles constricts, net filtration pressure will decrease and if arterioles dilates, net filtration pressure will increase. This mechanism is regulated by neural, renal and hormonal regulation.
Learn more about Glomerulus on
https://brainly.com/question/13064727
#SPJ4
When DNA is replicated, which of the following is true?
A. Each strand of the double helix serves as a template for a new strand.
B. The DNA is translated into a single strand of mRNA first, then copies are made from the mRNA.
C. The strands are copied then sealed back together, so there is one helix with new strands, and 1 helix with original strands.
D. The original and new DNA strands are mixed together so each helix has pieces of both.
Answers
Answer:
a. Each strand of the double helix serves as a template for a new strand.
Each strand of the double helix serves as a template for a new strand. The correct option is A.
What is DNA replication?The operation by which the genome's DNA is copy and pasted in cells is known as DNA replication. Before dividing, a cell must replicate its entire genetic code so that each resulting daughter cell has its own complete genome.
During DNA replication, each of the double helix's two strands serves as a template from which new strands are copied.
The new strand will work in tandem with the parental or "old" strand. Each new double strand is made up of one parental and one daughter strand.
Thus, the correct option is A.
For more details regarding DNA replication, visit:
https://brainly.com/question/16464230
#SPJ5
what part of the gene expression process do the various modifications to rnas and the sequence of utrs influence?
Answers
An intron in the 5′UTR may improve gene expression by including transcriptional regulatory elements or by structural manipulation and splicing. The presence of an intron in the 5′UTR, for example, is required for the production of the ubiquitin C (UbC) gene.
The eukaryotic 5' untranslated region (UTR) is important for ribosome binding to mRNA and start codon selection, as well as for controlling translation efficiency and structuring the cellular proteome.
Untranslated regions (UTRs) of transcripts are important regulators of gene expression in higher eukaryotes (influencing mRNA stability and translation efficiency).
Learn more about to 5′UTR visit here;
https://brainly.com/question/16099001
#SPJ4
. Where do most of the extinctions occur in the world? (Which biome?
Answers
The majority of extinctions worldwide are caused by sea level rise.
Where do extinction events usually happen?Most mass extinctions, including all of the "Big Five"—the End-Ordovician, Late Devonian, End-Permian, End-Triassic, and End-Cretaceous—as well as the more recently recognized Capitanian mass extinction of comparable severity to the Big Five—are correlated with sea level rise.
Where are the extinction rates the highest?Findings were erratic and challenging to compare between species. Furthermore, the majority (60%) of research on the impacts of climate change has focused on North America and Europe. But according to Urban, the three continents most at risk for extinction are South America, Australia, and New Zealand.
To know more about extinctions visit:-
https://brainly.com/question/14480057
#SPJ1
speciation is the divergence of two populations from a common ancestor. how does it contribute to biological diversity?
Answers
The diversity we observe today is the result of new adaptations emerging in the survivors of the extinction. The separation of two populations from a common ancestor is known as speciation. Biodiversity is increased by speciation.
Diversity is increased by speciation. The diversity of organisms within an ecosystem is known as biodiversity. It boosts biodiversity because speciation leads to the creation of new species.
The amount of biological diversity is directly inversely correlated with the pace of speciation. This implies that the diversity of a species will increase as speciation increases. Understanding the evolutionary tendency of any species and re-establishing the different bio-diversities already present on earth are both made possible by speciation.
To know more about adaptations
https://brainly.com/question/13052491
#SPJ4
how do fungi reproduce sexually? group of answer choices by the fusion of zygotes from two different fungi by the fusion of spores from the same individual fungus by the fusion of haploid cells from two different fungi fungi reproduce only by asexual reproduction
Answers
Fungi reproduce sexually C) By the fusion of haploid cells from two different fungi
Fungi reproduce sexually through a process called "sexual recombination" or "sexual reproduction." In this process, two different fungi of the same species come together and fuse their haploid cells, which are cells containing only one set of chromosomes.
This fusion results in the formation of a diploid cell, which contains two sets of chromosomes.
The resulting diploid cell undergoes meiosis, a type of cell division, to produce spores that are genetically unique. These spores are dispersed and can develop into new individual fungi, thus completing the sexual reproduction cycle.
Therefore, option C, "By the fusion of haploid cells from two different fungi," accurately describes the sexual reproduction of fungi.
To know more about fungi follow the link:
https://brainly.com/question/30214239
#SPJ4
The correct question is:
How do fungi reproduce sexually?
A) By the fusion of zygotes from two different fungi
B) By the fusion of spores from the same individual fungus
C) By the fusion of haploid cells from two different fungi
D) Fungi reproduce only by asexual reproduction
Provide a summary of biologist Stephen Stearns’ findings in how Natural Selection may be working today in humans.
Answers
Answer:
Stephen Stearns states that natural selection doesn't mean the survival of the fittest organisms, but rather this mechanism is illustrated by the selective reproduction of the fittest. Natural selection can be classified into distinct types, including directional, disruptive and stabilizing selection, which are in turn based on sexual selection. These types of selection are driven by different outcomes that have different dynamics.
Can someone please give me some main ideas for a scientific story? It has to be at least 500 words and I'm not sure what to write about. Please help
Answers
Explanation:
try ancient sciences from Greece and how it compares to modern science
QUESTION 1 Exercise 11.10. Butterflies. Alice, Bob, and Charlotte are looking for butterflies. They look in three separate parts of a field, so that their probabilities of success do not affect each other. • Alice finds 1 butterfly with probability 17%, and otherwise does not find one • Bob finds 1 butterfly with probability 25%, and otherwise does not find one • Charlotte finds 1 butterfly with probability 45%, and otherwise does not find one Let X be the number of butterflies that they find altogether. Write X as the sum of three indicator random variables, X1, X2, X3 that indicate whether Alice, Bob, Charlotte (respectively) found a butterfly. Then X= X1+X2 +X3. Find the expected value of X by finding the expected value of the sum of the indicator random variables. Your answer will have two decimal places. **This is a straight forward expected value of a sum of random variables, nothing fancy here! QUESTION 2 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? O A. Example 11.10, sampling without replacement O B. Example 11.11, sampling with replacement QUESTION 3 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. What is the expected value of getting the first head? This will be an integer answer. QUESTION 4 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The next step is to find the expected value of getting the second head. Because this is identical to finding the expected number of rolls for the first head (independent events), we just multiply the first head's expected value by 2. This will be an integer answer. QUESTION 5 Exercise 11.17 (a). Waiting for favorite song. Michael puts his iTunes on shuffle mode where songs are not allowed to be replayed. He has 2,781 songs saved on iTunes, and exactly one of these is his favorite. How many songs is he expected to have to listen to until his very favorite song comes up? Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? A. Example 11.11, sampling with replacement B. Example 11.10, sampling without replacement
Answers
In Exercise 11.10, the expected value of the number of butterflies found by Alice, Bob, and Charlotte is obtained by finding the expected value of the sum of three indicator random variables.
In Exercise 11.16, the expected value of the number of flips needed to get the second head in a coin flipping experiment is determined. These exercises involve different scenarios of sampling with and without replacement.
In Exercise 11.10, the expected value of X, the total number of butterflies found, is found by calculating the expected value of each indicator random variable (X1, X2, X3) representing whether Alice, Bob, and Charlotte found a butterfly, respectively.
The expected value of each indicator variable can be obtained by multiplying the probability of success (finding a butterfly) by 1 and the probability of failure (not finding a butterfly) by 0. Then, the expected value of X is calculated as the sum of the expected values of the indicator variables.
In Exercise 11.16, the expected value of X, the number of flips needed to get the second head, is determined. To find this value, we first need to find the expected value of getting the first head. This scenario is similar to Example 11.11, which involves sampling with replacement.
Each coin flip is an independent event, and the probability of getting a head is constant at 0.5.
Therefore, the expected value of getting the first head is 1/p, where p is the probability of success (0.5 in this case).
In Exercise 11.17 (a), the scenario of waiting for a favorite song in Michael's iTunes playlist involves sampling without replacement. Each song played is not replayed, and there is only one favorite song among the total number of songs.
Therefore, this scenario is similar to Example 11.10, sampling without replacement.
To find the expected number of songs Michael needs to listen to until his favorite song comes up, the formula for sampling without replacement is used, which is the reciprocal of the probability of selecting the favorite song at each step.
To learn more about expected value visit:
brainly.com/question/28197299
#SPJ11