Answer:a
Explanation:
4. If index of refraction 1 is 1.5, index of refraction 2 is 2.0, and the angle of incidence is 45 degrees, what is the angle of refraction?
15 index ofreaction 21820 and the angle of medence is as degres what's the angle of reaction
16 degrees
32 degrees
48 degrees
64 degrees
Answer: The angle of refraction is 32°
Explanation:
By snell law, we have that:
n₁*sen(θ₁) = n₂*sen(θ₂)
Where n₁ = 1.5
n₂ = 2.0
θ₁ = 45°.
then we want to find the angle of refraction.
1.5*sin(45°) = 2*sin(x)
x = Asin(1.5*sin(45°)/2) = 32°
The angle of refraction is 32.0 degrees
Refractive index and Shell's lawSnell’s Law describes how a ray of light will change direction as it passes from one medium into another, or as it is reflected from the interface between two media.
Snell's law states that:
n1 * Sinθi = n2 * Sinθrwhere;
nA is refractive index of media Aθi is the angel of incidence in media 1n2 is the refractive index of media 2θr is the angle of refraction in media 2Using the formula above
1.5 * sin 45 = 2.0 * sin r
sinr = 1.5 × sin 45/2
r = 32.0 degrees
Therefore, the angle of refraction is 32.0 degrees
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Name 1 way an abiotic factor interacts with another abiotic Factor.
Answer:
Wind shaping rocks is an example.
Explanation:
Abiotic factors are factors that aren't from a living creature. Wind picks up sharp grains that carve rocks over millions of years. Other examples include:
Water shaping rocks
Earthquakes creating riverbeds.
And much more!
Hope this helps!
The selection of traits at opposite ends of the spectrum is considered ...
A, disruptive selection
B, directional selection
C, stabilizing selection
Answer:
A?
Explanation:
The selection of traits at opposite ends of the spectrum is considered is disruptive selection.
What are the principles of natural selection?For natural selection to occur, four basic conditions are necessary:
Reproduction: organisms must reproduce to form new generations; Variability: there must be differences between individuals in the population; Heredity: Descendants must inherit characteristics from their parents.In this case we have the Disruptive selection is one in which extremes are favored and intermediate organisms are eliminated. An example of this type of selection can be seen in some African finches that are adapted to eating seeds.
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.Many types of light come from the Sun, ranging from infrared to ultraviolet. There is a small range of wavelengths of light that humans can see within the larger spectrum of light. What do we call the range of the spectrum that humans can see?
visible light spectrum
high intensity spectrum
color wheel spectrum
Answer:
Visible light spectrum
Explanation:
Inform me if I'm wrong. Thanks!
Which statement describes the weather and climate in a tropical region?
The angle of the Sun’s rays affects daylight hours, creating warm temperatures all year.
The temperature is different in summer and winter because the region is at a high elevation.
The angle of the Sun’s rays controls the amount of precipitation experienced in the region.
Rain in the summer and drought in the winter occur because the region is at a high elevation.
Answer:
The angle of the Sun’s rays affects daylight hours, creating warm temperatures all year.
Explanation:
Answer:
A. The angle of the Sun’s rays affects daylight hours, creating warm temperatures all year.
Explanation:
:)
Dina is a paleclimatologist. She wants to review documents to assess climate data for her hometown. Which historical documents should Dina examine in order to asses the climate data?
Dina should examine _____ (newspaper articles, television documentaries, Shakespeare's plays) and _____ (radio programs, farmers' harvest yeild records, fashion magazines) to find historical climate data for her hometown.
Answer:
Newspaper articles and farmers harvest yield record
Explanation:
Paleclimatologists study climate where there are little records about the weather.
A paleoclimatologist such as Dina could use newspaper articles and farmers' harvest yield records to assess the historical climate data of her hometown. These sources provide firsthand accounts of weather changes and long-term climate trends.
Explanation:As a paleoclimatologist, Dina can gather historical climate data from several different sources. However, the most helpful documents would likely be newspaper articles and farmers' harvest yield records. Newspaper articles can provide firsthand accounts of weather phenomenons such as heatwaves, storms, droughts, and cold spells. Farmers' harvest yield records, on the other hand, can illuminate long-term climate trends. For instance, bumper crops can suggest periods of favorable weather, whereas poor yields could point to adverse climates. Therefore, these documents can provide valuable context for a climate study in her hometown.
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All plants are able to complete the process of Which means they are able to use energy from sunlight to make food
Answer:
Photosynthesis
Explanation:
Which of the following is true in a climax community? * 10 points The community will constantly evolve and change If one species dies, a new species will fulfill the same role They are stable for a long time, with the same species maintaining their population Ut goes through a major change called "climax" every few hundred years
Answer:
It is true that climax communities are stable for a long time, with the same species maintaining their population.
Explanation:
Climax is the final, relatively stable state of successive ecosystems that occurs as a result of shifts, or successions, and to a large extent corresponds to the environmental conditions of a particular area. Climax depends on climatic factors, on local soil characteristics and on human impacts on nature.
Theoretically, the climax community can support itself indefinitely, all its internal components are balanced with each other, and it is in equilibrium with the physical environment.
Pls help I will mark bainiest. Answer first
Type the correct answer in the box. Round your answer to the nearest hundredth.
Scarlett is trying to find the height of a dam. She stands 90 meters away from the dam and records the angle of elevation to the top of the dam to be 26º.
Scarlett's height is 1.65 meters, so the height of the dam is meters.
Answer:
The height of a dam:
h = x + 1.65 m,
x = 90 m · tan 26°
x = 90 · 0.4877
x = 43.90
h = 43.90 m + 1.65 m = 45.55 m
The height of the dam is 45.5 m.
Explanation:
The height of the dam will be "45.55 m". A complete solution is below.
According to the question,
The height of dam,
[tex]h = x + 1.65 \ m[/tex]
Now,
→ [tex]x = 90 \ m\times tan 26^{\circ}[/tex]
By substituting the values, we get
[tex]= 90 \ m\times 0.4877[/tex]
[tex]= 43.90[/tex]
hence,
The height of dam will be:
→ [tex]h = 43.90 \ m + 1.65 \ m[/tex]
[tex]=45.55 \ m[/tex]
Thus the above response is appropriate.
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These sunbathers are warming up in the bright sun. This is an example of what type of thermal energy transfer? Question 18 options: conduction convection radiation
Answer:
I think it's Radiation!
Explanation:
A person who is interested in learning more about how glands produce and release hormones might pursue a career in
Group of answer choices
reproductive science
gene therapy
neuroscience
endocrinology
endocrinology
Explanation:
the answer is likely to be endocrinology because it deals with glands and hormones
Ans: endocrinology
Explanation: The meaning of endocrinology is, endocrinology (from endocrine + -ology) is a branch of biology and medicine dealing with the endocrine system, its diseases, and its specific secretions are known as hormones.
A scientist sketches bacteria observed in different samples. Which question is the scientist most likely trying to answer about the bacteria? What methods of reproduction do they use? How large is the nucleus in each bacterium? Which types of bacterium are in each sample? How many cells make up each bacterium?
Answer:
Which types of bacterium are in each sample.
Explanation:
Different kinds of bacterium have different configuration. After sketching them, the scientist can then compare the configurations to the configuration categorized into different genuses.
Hope this helps!
The illustration shows many bacterial cells of various sizes and shapes. The pink bacteria stand in for rod-shaped bacteria, the dark-green bacteria for spiral-shaped bacteria. The correct option is C.
What is bacteria?Bacteria are common, largely free-living organisms that frequently only have one biological cell. They make up a significant portion of the prokaryotic microbial kingdom.
Bacteria, which are typically a few micrometers long and were among the first life forms to appear on Earth, are found in the majority of its habitats. Bacteria are prokaryotic, unicellular, members of the Monera kingdom.
Bacteria come in a wide range of sizes and forms, and they can be categorized based on these characteristics, such as rod-shaped, spherical, comma-shaped, spiral, or corkscrew.
Numerous bacterial cells of diverse shapes and sizes are depicted in the graphic.
The light-green bacteria represent spherical bacteria, the dark-green bacteria represent rod-shaped bacteria, and the pink bacteria represent spiral-shaped bacteria.
Thus, the correct option is C.
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Your question seems incomplete, the missing image is attached below:
How has the EPA improved air quality over the last 30 years?
by monitoring pollutants and passing regulations to reduce air pollution
by decreasing soil erosion and dust storms
by building marine refuges to help protect marine life and reduce air pollution
by decreasing of fossil fuel use in motor vehicles and industry
Answer:
a
Explanation:
The EPA has improved air quality over the last 30 years by setting and enforcing regulations, monitoring pollutants, and encouraging the reduction of fossil fuel use.
Explanation:The Environmental Protection Agency (EPA) has been instrumental in improving air quality over the last 30 years. Key methods employed by the EPA include setting and enforcing regulations aimed at controlling air pollution, monitoring pollutants and the implementation of policies to promote cleaner energy sources. It has also encouraged the reduction of fossil fuel use in motor vehicles and industry through regulations and incentives.
Through the Clean Air Act, the EPA has set standards that have decreased dangerous pollutants and thereby improved health outcomes for many people. Additionally, they launched programs like the Acid Rain Program and actions to reduce interstate air pollution.
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Which situation most likely involves the hormone gibberellin ?
A. The development of new seedlings
B. The onset of winter dormancy
C. The growth of top- located buds
D. The response of a plant to gravity
Gibberellins are plant hormones involved in various growth processes, including seed germination. Therefore, the use of gibberellin would most likely be seen in the development of new seedlings.
Explanation:Gibberellins are a category of plant hormones that play an essential role in different growth processes, including seed germination, stem elongation, and leaf and fruit development. In light of these functions, the option A. The development of new seedlings most likely involves the hormone gibberellin. During the seed germination process, gibberellins stimulate the growth and development of seedlings by helping in the mobilization of stored food in the seed and sending signals for the seed to break dormancy.
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The situation that most likely involves the hormone gibberellin is A. The development of new seedlings.
Gibberellins are plant hormones that stimulate several processes, including shoot elongation, seed germination, and fruit and flower maturation. Specifically, gibberellins break dormancy in seeds, which is typically a state of inhibited growth and development.
These hormones do so by activating the transcription of genes encoding for enzymes like amylase which break down stored starches in the seed into simpler sugars necessary for the growth of the seedling. Moreover, gibberellins promote the cell elongation of young roots during the germination process.
When water is available, it activates gibberellins, leading to seed germination; conversely, the absence of water leads to increased abscisic acid which inhibits gibberellins and thus prevents germination.
What does a wave carry?
force
Which of the following statements is true of the process shown below? A. The cells formed at the end of the process only have half of the chromosomes as the original cells. B. The cells formed at the end of the process are identical to the original cells. C. The cells formed at the end of the process do not contain any of the genetic material from the original cells. D. The cells formed at the end of the process contain the same number of chromosomes as the original cells.
The statements is true of the process shown below is that the cells formed at the end of the process only have half of the chromosomes as the original cells. Thus, option A is correct.
Where the formation of cell takes place?The cells formed at the end of the process are identical to the original cells. The cells formed at the end of the process do not contain any of the genetic material from the original cells. When a cell undergoing cellular division identifies that a chromosome misalignment had taken place the cell cycle stops until the error it's corrected.
Option two of the question states that the cell cycle will proceed uncontrollably, this is not the case for the error at hand. Although this can be a problem for cells and leads to the appearance of cancer, it is not caused by chromosome misalignment.
The stop or delay in the cell cycle is what normally takes place in these situations. This stoppage is done by the spindle checkpoint, which prevents duplicate chromosomes from separating.
Therefore, The statements is true of the process shown below is that the cells formed at the end of the process only have half of the chromosomes as the original cells. Thus, option A is correct.
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What happens to sedimentary rocks on Earth’s surface?
Answer:
Because erosion only happens on the earth's surface sedimentary rocks are only formed on the earth's surface. Sedimentary rocks will be changed into igneous and metamorphic rocks if the sedimentary rocks are buried deep below the earth's surface.
Explanation:
is the heart an organ or muscle?
Answer: Muscle
Explanation:
Your heart is actually a muscular organ. An organ is a group of tissues that work together to perform a specific function. In the case of your heart, this function is pumping blood throughout your body. Additionally, the heart is largely made up of a type of muscle tissue called cardiac muscle.
Answer:
it's a muscle
Your heart is actually a muscular organ. An organ is a group of tissues that work together to perform a specific function. In the case of your heart, this function is pumping blood throughout your body. Additionally, the heart is largely made up of a type of muscle tissue called cardiac muscle.
In photosynthesis, what form of energy is sunlight converted to, and how is 1 point
this energy stored? *
Answer:
Sunlight is converted to chemical energy in the form of ATP, which is the main energy-storing molecule in living organisms.
Explanation:
A prokaryotic organism might be classified in the Domain of ___________ because ______________.
Describe the general structure of the monomers
Answer:
The monomer is an amino acid, and I will describe it below. :)
Explanation:
Rubisco is an enzyme found in plants, and its job is to fix carbon. Since we know it is an enzyme, we also know it is a protein since pretty much all enzymes are proteins. The monomer of proteins is the amino acid.
The structure of an amino acid looks like this (see the picture). On one side we have a basic amino group, on the other side we have an acidic carboxyl group. The combination of the amino group and acid group gives us the name amino acid. Also notice that there is the R group. Each amino acid has the same basic structure (with the amino group and carboxyl group), but the unique R group is what gives the particular amino acid its unique characteristics. There are about 20 different kinds of R groups which is why there are 20 different types of amino acids.
So, having a non-polar R group would allow it to interact with a hydrophobic amino acid in another Rubisco molecule.
Monomers are the basic unit of polymers. They are composed of carbon, oxygen, and hydrogen atoms, joint by covalent bonds. There are different monomers which vary in structure, such as nucleotides and amino acids.
-------------------------------------------------------------------
Monomers are the basic unit of polymers. When many monomers join through chemical bonds, through the polymerization process, they form a polymer.
There are many types of monomeric molecules. To name a few, we can mention
Monomer Polymer
Monosaccharide ⇒ CarbohydratesFatty acid ⇒ LipidsAmino acid ⇒ ProteinsNucleotide ⇒ Nucleic acids
Monomers are organic molecules of reduced molecular mass. They are basic units relatively simple, with a defined structure.
Monomers are composed of carbon, oxygen, and hydrogen atoms, which establish covalent bonds.
For instance,
Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.Amino acids are monomers composed of a central carbon, one hydrogen atom, one carboxyl group, one amine group, and one R group. The composition of the R group is what makes them different from each other.Every monomer has a free H atom and a hydroxyl group (-OH) in the extremes. When two monomers get together, the H atom and the -OH join to form a water molecule, which is released. The result is a polymer of two monomers and H₂O.
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Give two abiotic factors which will affect the growth on a school playing field
Glaciers erode land through which two processes?
chemical weathering and deflation
deflation and abrasion
plucking and abrasion
plucking and deflation
Answer:
Glaciers erode land through Plucking and Abrasion.
Glaciers are mass form of ice found in the high altitudes. During summer the glaciers melt down and rich source of pure water is obtained. Glaciers erode through two main processes and they are plucking and abrasion.
-Hops
The two main process by which Glaciers erode are;
Plucking and AbrasionWhat is glaciers?A glacier is a persistent body of dense ice that is constantly moving under its own weight.
Glaciers are mass form of ice found in the high altitudes. Glaciers is affected by temperature. During summer the glaciers melt down and rich source of pure water is obtained.
Process by which glaciers erodeThe two main process by which Glaciers erode are;
Plucking and Abrasion.Thus, Glaciers erode land through plucking and abrasion.
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2. Two Dalmatians had a large litter of 10 puppies. Seven of them have black spots, while 3 do not. What would the genotypes of the two parents need to be for this result? Create a Punnett square to support your answer.
Answer:
The parents would have both have to be Bb or heterozygous for black spots in order to have 7 out of 10 or about 75% of puppies with black spots.
have a good day
-HOPS
How do consumers obtain the carbon that they need for their life processes?
They breathe it in from the surrounding air.
They break down the plants and animals they eat.
They absorb it from the surrounding soil.
They absorb it from water through their pores.
PLEASE HELP!!!
Consumers obtain the carbon that they need for their life processes by breaking down the plants and animals they eat.
How do consumers obtain energy?Consumers must consume other species in order to get their nutrition and energy. Animal feces and remnants are broken down by decomposers to provide energy.About 10% of the total solar energy is exclusively obtained by primary consumers from the producers they consume. The remaining 90% is either lost as heat or utilized by the producer for growth, reproduction, and survival. Secondary consumers eat primary consumers.The function of consumers in an ecosystem is to gather energy by feeding on other species and occasionally to transfer energy to other consumers.Other creatures in a food chain and ecosystem may be impacted by changes that affect consumers.learn more about consumers here:
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Which type of cnidarian is found commonly in both salt water and fresh water?
a. hydras
b. jellyfish
c. corals
d. sea anemones
Answer:
A) Hydras
Explanation:
Answer:
A: hydras
Explanation:
got it right on edge
most trees in ___________ lose their leaves during winter
Answer:
The answer to that question would be: autumn or fall.
Explanation: That is the season before winter.
Researchers are studying lichens growing on trees in a forest ecosystem. At the beginning of the study, the researchers identified twelve lichen species in the forest. Later, a forest fire happened in the study area. The researchers returned to the area and found only six lichen species. What inference is best supported from the researchers observations?
Answer:
Certain lichen species are better adapted to survive forest fires than others.
We can conclude that Initial area of the forest was suitable for lichens whereas the later area was not suitable for lichens.
What are lichens?Lichens do not have vascular tissue like xylem and phloem to carry nutrients and water throughout their thalli like a plant does, nor do they have a waxy coating like plants do on their leaves.
The structure of the lichen incorporates everything in its surroundings. Lichens obtain their water and nutrients from the air and rain that fall on them. A lichen's basic structure is made up of layers of fungus and algae.
If there is already a green algal layer present, cyanobacteria can be found in a layer beneath the upper cortex or in microscopic pockets on top of the upper cortex. The lichen will be dark green, brown, or black in color thanks to cyanobacteria.
Therefore, We can conclude that Initial area of the forest was suitable for lichens whereas the later area was not suitable for lichens.
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Pre-Test
Active
TIME REMAINING
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In a scientific investigation, the term "quantitative data" refers to numbers that are usually followed by
Answer:
a.) units
Explanation:
just took the test and got it right