Answer:25.4
Explanation:because i got it correct
To find the angle of refraction when light passes from ethanol to cyclohexane, you use Snell's Law with the given indices of refraction and the angle of incidence. Calculate sin(θ2) and then use the inverse sine function to find the angle of refraction (θ2).
Explanation:To calculate the angle of refraction of light passing from ethanol into cyclohexane, we can use Snell's Law, which is n1 × sin(θ1) = n2 × sin(θ2), where n1 and n2 are the indices of refraction of the two media, and θ1 and θ2 are the respective angles of incidence and refraction. Given that the index of refraction of ethanol (n1) is 1.37 and that of cyclohexane (n2) is 1.43, and the angle of incidence (θ1) is 26.8°, we can solve for the angle of refraction (θ2).
Applying Snell's Law:
1.37 × sin(26.8°) = 1.43 × sin(θ2)
First, calculate the sine of the angle of incidence and then divide by the index of refraction for cyclohexane to find the sine of the angle of refraction:
sin(θ2) = (1.37 × sin(26.8°)) / 1.43
After calculating sin(θ2), use the inverse sine function to determine the angle θ2, which is the angle of refraction.
Substitute the values into the equation and solve for the angle of refraction (calculations not shown here as they require a calculator).
Different between sperm and ovum?
Answer:
1.Sperm is a male reproductive material that form at the onset of puberty.
2. Sperms are produce in immense amount.
3. Sperms are motile.
Explanation:
1. Ovum is produced in females which is called egg.
2. Ovum is nonmotile.
3. They are produced in limited amount in a process called ovulation.
Are alligators Kings of the Everglades?
Answer:
Somewhat Yes
Explanation:
With the population of over 200,000 in the area and the lack of natural predators it would seem so.
2. (2) List 2 important objectives for the cow/calf producer.
Answer:
Important objectives for the cow/calf producer is given below.
1) First objective of cow/calf producer is to provide healthy food material to the cow and calf in order to gain more benefit from it.
2) Second objective of cow/calf producer is to increase milk and meat production from animals in the farm to earn more money from it.
When a woman is pregnant her developing baby receives antibodies from her what type of immunity does this describe?
Answer:
passive immunity
Explanation:
2 Polhts
What is true of the members of the same population? Select all that apply.
Answer: They are all the same species.
Explanation: A population is defined as a group of individuals of the same species living and interbreeding within a given area. Members of a population often rely on the same resources, are subject to similar environmental constraints, and depend on the availability of other members to persist over time.
Answer:
They are all the same species
Explanation:
AP3X
A pressure difference is also known as a(n) ______
A. pressure gradient
B. pressure measurement
C. stationary front
D. isobar
Answer: A would be correct
Explanation:
Possible ways the universe might end.
Answer:
Universal heat death, a major freeze, or big rip. Who knows??
Hope this helped.
This graph shows three types of species based on the different patterns of survivorship.
Which survivorship strategy is used by the type I species?
A.) having a high birthrate
B.) having a short life span
C.) having few offspring
D.) dying mostly while young
Answer: having few offspring
An organism creates young through a process called reproduction. All living things reproduce. No species would live past one generation if they didn't. Thus, option C is correct.
What is the importance of species having few offspring?Natural selection holds that organisms reproduce more young than they can support in their environment. Those who have greater physical capacity for surviving, developing, and procreating.
Through reproduction, organisms can pass on their traits, or identifying qualities, to their progeny.
Because there are numerous other individuals in a species who can successfully create offspring to maintain the species.
It is unlikely that the failure of one individual to reproduce will have an impact on the species as a whole. However, a species may go extinct if it as a whole is unable to procreate.
Therefore, type I species having few offspring.
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Mr. Kim's eighth grade science class was trying to maintain a classroom garden. Unfortunately, the weeds were taking over. Mr. Kim saw a weed killer advertised on TV which said that one application would kill the three most common garden weeds and would be effective for at least one month. Mr. Kim bought some and applied it to the classroom garden. His students kept track of the weeds growing in their garden.
Mr. Kim's classroom garden scenario involves herbicides, which are chemicals used to control weeds, making this a Biology-related question. Three types of control methods in managing weeds are chemical, biological, and cultural control. Herbicides can vary in selectivity and persisted effects, and it's essential to handle them correctly to avoid potential health risks.
Explanation:The story of Mr. Kim's classroom garden involves the use of a weed killer or a herbicide, thus it falls under the field of biology. Herbicides are chemicals that can control or kill unwanted plants such as weeds. They can be non-selective (kill all types of plants) or selective (kill specific types of plants while sparing others). For example, 2,4 D is a selective herbicide that kills most broadleaf plants but spares grasses.
Mr. Kim's approach to weed control in their classroom garden is a type of chemical control, one of the three methods to manage weed populations. The other two are biological control (using living organisms to reduce weed populations) and cultural control (modifying the environment to deter weed growth).
It's important to understand that while the usage of herbicides can be effective, they can also present health risks if humans or other non-target organisms are exposed. Therefore, proper application and management are crucial.
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what was the difference between mendel's work in the inheritance of traits and those done earlier?
There were many differences in ways of approach towards the experiment from Mendel and those before them.
Explanation:Gregor Johann Mendel is known as the father of genetics. He carried out a series of experiments which lead to the deduction of the 2 laws of genetics - the law of segregation and law of independent assortment.
But mendel was not the 1st person to carry out such experiments. But he was the only person who succeeded among them. This is because mendel has several differences from them im his experiments.
Firstly, he chose pea plants which has several easily noticeable characters and he concentrated on one characteristics at a time.
Secondly, he was lucky as the characters he chose were on different chromosomes.
Thirdly, he did his experiment neatly and carried out the artificial pollination with all care so that there's no contamination.
Lastly, he kept careful statistical record of the numbers and characters of progenies.
2. Which describes a substance with a high index of refraction?
It causes light to speed up significantly.
It causes light to slow down significantly.
90
It bends light less than air.
The statement that it causes light to slow down significantly best describes the high index of refraction.
Explanation:
Index of refraction is the amount a medium will be refracting the incident light. As it is a measure of amount of light getting refracted, the medium decides the index of refraction of that type.
If the index of refraction of any medium is high, then it will refract most of the incident light and so the light' speed travelling through the medium will get slower.
So increase in refractive index decrease the light' speed. Thus, if the light' speed decreases or slows down significantly then the substance has high index of refraction.
Finch species living on the Galapagos Islands exhibit a variety of beak types that favor different foods. Finches that eat seeds and plant parts have beaks of the shorter, thicker variety, while finches that eat insects and other small organisms have thin, pointed beaks. 78% of the finches on an island in the Galapagos have beaks that are identical to Finch 1. What conclusion can you reach about the availability of food for the finches on this island?
Answer:
Assuming that by "Finch 1" it is referring to the ones that have short, thick beaks, the answer is that there is primarily seeds and plants on the island
Answer:
C) The insect populations have been severely limited.
Explanation:
If the DNA sequence of Species 5 were examined, which percentage of its nucleotide sequence would be identical to
that of Species 4?
A)
below 61%
B)
close to 96%
between 88% and 96%
D
between 61% and 88%
Answer: D
Explanation:
Which statement describes what will most
introduction of the predator?
owal will most likely occur in the rabbit population due to the
A
The rabbits will mutate their genes and e
ace their genes and express genes that increase their speed.
B
Slower rabbits will develop stron
we dobits will develop stronger legs and pass this trait to their ortspning.
Rabbits will mate and produce offspring with a different species
ontspring with a different species that has faster runners.
Faster rabbits will survive and reproduce increasing the a
and reproduce increasing the average speed of the rabbit
population.
Answer:
a, the rabbits will mutate their genes and answer a
Explanation:
Faster rabbits will survive and reproduce increasing the average speed of the rabbit population.
Who is a predator?A predator is an organism that hunts, kills and consumes other living beings for its survival. In the animal kingdom, predators play a crucial role in maintaining the balance of nature. They are typically at the top of the food chain, with prey forming the lower level. The predator-prey relationship is a key aspect of the ecosystem, as it helps regulate the populations of both predators and prey.
The predator species have adaptations, such as sharp teeth and claws, agility, and strength, which help them in capturing and consuming their prey. Some of the common predators include lions, tigers, wolves, and snakes. Their role in the ecosystem is important in maintaining a healthy and stable food chain, which is necessary for the overall health of the environment.
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Which regions have the greatest diversity of amphibian species why do you think those areas have so many different amphibian species
Answer:
The greatest diversity of amphibians is in tropical forests.
Explanation:
Because amphibians have highly permeable skin and spend a portion of their lives in water and on land they need the the prevalent humidity of the tropical habitat which enables them to occupy a much wider range.
please help me ASAP
Answer:
A population is divided.
Explanation:
https://quizlet.com/188846932/214-quiz-genetic-isolation-flash-cards/
1 point
Medicare is a national health insurance program that provides health
insurance for Americans
O
(all listed)
O
in terminal stage of certain diseases
O
aged 65 and older
with disability status
Medicare is a national health insurance program that provides health
insurance for Americans aged 65 and older with disability status
Explanation:
Medicare is the United States Federal Government’s health insurance coverage program especially for the senior people aged 65 and above and also for those with disability status.
Medicare is divided into various parts like A, B, C, D according to the facilities covered and services provided. Part A provides free hospitalization to people who are 65 and above irrespective of their income level. Part B looks into essential medical services like physician office visits, diagnostic studies, equipments like wheel chair etc.
Medicaid is the coverage that provides health insurance for people in the limited income group.
What does the person shown MOST LIKELY do?
A
pass laws
make laws
review laws
carry outlaws
Submit
Answer:
Review law
Explanation:
Answer:
Correct is review law
Explanation:
I got it right on USA test prep
In which phase does crossing over occur (where the homologous pairs exchange genetic information)?
A. Prophase I
B. Prophase II
C. Prophase III
Answer:
A
Explanation:
Crossing over occurs between prophase I and metaphase I and is the process where two homologous chromosome non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids.
Which of the following illustrates a complex virus?
Answer: d
Explanation:
Sally's teacher asked her to classify a microscopic organism found in pond water. The FIRST characteristic Sally used to figure what kingdom the organism belonged to was
Sally would first determine if the microscopic organism from pond water has a nucleus to classify it into a kingdom, which would likely place it in the Eukarya domain and possibly the Protist Kingdom.
The first characteristic Sally used to classify a microscopic organism found in pond water into a kingdom would likely be whether the organism has a membrane-bound nucleus. If the organism has a nucleus, it falls into the Eukarya domain, which includes the kingdoms of animals, plants, fungi, and protists. This is because the Three Domain Classification system, proposed by Carl Woese, classifies all living organisms into three categories based on their cell structure and ribosomal RNA (rRNA) sequences: Bacteria, Archaea (both lacking a membrane-bound nucleus), and Eukarya (organisms with a nucleus). Protists are generally eukaryotic organisms that cannot be classified as animal, plant, or fungus, and are common in aquatic environments like pond water.
6. If the bullet in problem #6 is traveling 2 meters of the ground, what would the potential energy
bullet be?: :
Final answer:
To find the potential energy of the bullet 2 meters off the ground, use the formula PE = mgh. With the given mass of 10g, converted to 0.01 kg, and the height of 2 meters, the potential energy is calculated to be 0.196 joules.
Explanation:
The question is about the potential energy of a bullet that is 2 meters off the ground. The potential energy of an object can be calculated using the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s2 on Earth), and h is the height of the object above the reference point. In this case, we assume that the mass of the bullet is 10g (which can be converted to 0.01 kg for consistency of units) and the height h is 2 meters.
Using the formula:
PE = mgh
PE = 0.01 kg * 9.8 m/s2 * 2 m
PE = 0.196 J
Therefore, the potential energy of the bullet when it is 2 meters above the ground would be 0.196 joules.
The desert sand dunes seen here are created through the processes of ___________ and ____________.
Answer:C
Explanation:because why not
Answer:
Weathering and erosion
Explanation:
It is C because weathering creates the sediments and erosion carries them to where they are, and eventually, all the particles and sediments create a sand dune. Hope this helps!
How does angiogenesis effects the body
Answer:
The angiogenesis affects the body
The presence of blood vessels where they shouldn't be found may affect the tissues and leading to an increasement in failure.
The absence of food vessels in a repairing metabolically active tissue may inhibit the repair
It also promotes neoplastic diseases
Explanation:
What is the value in meters per second squared, of the acceleration of
gravity?
The rate of acceleration of gravity is 9.8 m/s^2
A characteristic that allows an organism to survive better is called
Answer:
The characteristics of an organism that help it to survive in a given environment are called adaptations.
Explanation:
Which statement correctly compares a hypothesis and a theory?
A theory is a prediction for a specific situation, while a hypothesis is used to make predictions for many similar situations.
A hypothesis is a prediction for a specific situation, while a theory is used to make predictions for many similar situations.
A theory provides an explanation, but a hypothesis does not.
A hypothesis provides an explanation, but a theory does not.
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Answer:
A hypothesis is a prediction for a specific situation,while a theory is used to make predictions for many similar situation
Explanation:
An hypothesis is a thought or prediction that a scientist might think would happen while a theory is a experiment to determine if the hypothesis is correct.
A hypothesis is a specific prediction about a new phenomenon based on a theory, while a theory is a broad explanation that explains larger bodies of data.
Explanation:A hypothesis is a specific prediction about a new phenomenon that should be observed if a particular theory is accurate. It is an explanation that relies on just a few key concepts. Hypotheses are often specific predictions about what will happen in a particular study. They are developed by considering existing evidence and using reasoning to infer what will happen in the specific context of interest.
Hypotheses are often but not always derived from theories. So a hypothesis is often a prediction based on a theory but some hypotheses are atheoretical and only after a set of observations has been made is a theory developed. This is because theories are broad in nature and explain larger bodies of data. So if our research question is really original then we may need to collect some data and make some observations before we can develop a broader theory.
1. All electromagnetic energy is visible.
2. Electromagnetic energy is the same thing as heat.
3. Ultraviolet has a frequency higher than visible light.
4. The electromagnetic spectrum includes only visible light and infrared.
5. Radio waves are not really electromagnetic.
6. Only visible light can transmit through a vacuum.
7. All electromagnetic waves are transmitted, reflected, and absorbed depending on the material they hit.
8. All electromagnetic waves have the same frequency.
Sodium is an element found in table salt. It contains 11 protons and
12 neutrons. How many electrons are found in a neutral atom of
sodium?
A. 11
C. 23
B. 12
D. 1
Answer:
11 electrons are found in a neutral atom of sodium.
Explanation:
atoms are made up electrons and protons. Electrons are negatively charged particles and protons are positively charged particles. The number of electrons and protons are constant or fixed in an element. However, the number of electrons and protons may not be always equal. the number of protons in the atom is equal to the atomic number of the element. sodium's atomic number is 11 and thus the number of protons is also equal to 11. since sodium atom is neutral, the number of protons = the number of electrons. thus the number of electrons in a neutral sodium atom is 11
How would you describe the relationship between the two variables?
What happens as the light intensity increases?
Answer:
As light increases photosynthesis increases in rate as the plant would have more supply of an reaction due to the sun uv