Answer: By Snell's law, we can see that the angle of refraction is 30.34°
Explanation:
Snell's law says that:
If a ray in a medium of refractive index n₁, insides with an angle θ₁ in another medium with refractive index n₂, then the angle of refraction θ₂ is given by:
n₁*sin(θ₁) = n₂*sin(θ₂)
We know that:
The incidence angle is 45°, then: θ₁ = 45°
We can assume that the first medium is air, then n₁ = 1
The refractive index of the other medium is 1.4, then n₂ = 1.4
Replacing these in the Snell's law equation we get:
1*sin(45°) = 1.4*sin(θ₂)
Now we can solve this for the angle of refraction:
sin(45°)/1.4 = sin(θ₂)
Asin(sin(45°)/1.4 ) = Asin( sin(θ₂)) = θ₂ = 30.34°
So the angle of refraction is 30.34°
A plant produces seed cones and pollen cones . Is it vascular? To what group of plants does it belong
A plant that produces seed cones and pollen cones is a vascular plant, and plants that produce seed cones and pollen cones belong to the group of plants known as gymnosperms.
What are gymnosperms?Gymnosperms are a group of seed plants that produce seeds that are not enclosed in an ovary and produce open seeds that are usually borne in cones and include a variety of plant species, including conifers such as pine, spruce, and fir trees, cycads such as palm-like plants, ginkgoes, etc., and the production of seed cones and pollen cones is a vital characteristic of gymnosperms, these seed cones, which are also called female cones, produce seeds that are typically larger and more complex than pollen grains.
Hence, a plant that produces seed cones and pollen cones is a vascular plant and belongs to the group of plants known as gymnosperms.
Find out more about gymnosperms here.
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Multiple Choice
A student observed bees flying between flowers on a squash vine. after researching this activity, the student learns that bees obtain nectar from the flowers. The pollen from the flowers sticks to the bees and is transported to another flower of the same species, resulting in pollination. The student decides this is an example of mutualism. Which table explains why this relationship is mutualism?
Answer:
The answer is D
Explanation:
Flowers and bees both benefit from pollination so D
Answer: that should be d
Explanation:
A child has a mass of 30 Kg on earth. If the gravity on the Moon is one sixth that of the earth what is the mass of the child moon
Answer:
30 kilograms
Explanation:
A change in gravity does not affect mass.
Are enzymes needed for metabolism?
A. YES!
B. NO!
C. MAYBE SO!
D. ALL OF THE ABOVE (This option clearly makes no sense! Don't pick it!)
Answer:
YES! (Don't mean to yell, but those were the options.)
Explanation:
Enzymes break down food, and therefore, are needed for metabolism.
transcribe this strand of DNA 5' 3’ TACGCGCATTTCGCCATGAAGACATTTATTCTGCTTCTC into mRNA- and Amino acid-
Answer:
AUGCGCGUAAAGCGGUACUUCUGUAAAUAAGACGAAGAG
Explanation:
this is the complementary strand for the mRNA.
A=U
C=G
G=C
T=A
this is the key for any mRNA strand.
;)
what happens to most solar radiation when it gets to earth??
Answer:
Most of the solar radiation is bounced off of earth´s atmosphere.
Explanation:
Due to earth´s magnetic field, we are able to be protected from most of the solar radiation the sun emits.
Archie Carr helped save turtles from extinction. What did he do during Operation Green Turtle?
A.) He made laws against hunting turtles.
B.) He took turtle eggs to safe beaches.
C.) He cleaned the turtles after an oil spill.
D.) He planted grasses that turtles eat.
Answer:B
Explanation:The project distributed green turtle eggs and hatchlings to various nesting beaches around the Caribbean and the Gulf of Mexico in an effort to encourage the growth of their dwindling populations. His conservation efforts also led him to lead campaigns against ocean pollution.
the chief purpose of the photosynthetic process is considered to be the
A student examines a periodic table.
Which inferences about sodium (Na) are true?
Answer:
true c this is the answer
Type a paragraph describing how the circulatory and respiratory systems work together to deliver oxygen to the body’s tissues and remove carbon dioxide.
i. Include the names of structures and other components that play a role in gas
exchange.
ii. Explain how the interactions between the circulatory and respiratory systems
contribute to maintaining homeostasis in the body.
b) Type a second paragraph comparing the accuracy of your model to actual organ systems and
their functions.
i. Consider how a model is different from an actual human body.
ii. Describe the limitations of a model
Answer:
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
The circulatory and respiratory system work together to provide oxygen and remove carbondioxide gas.
How circulatory and respiratory system work together?The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in to bring oxygen and out of the lungs to remove carbondioxde gas from the body. Blood moves into the lungs to bring carbondioxide gas and to load oxygen with the help of pumping of heart.
So we can conclude that circulatory and respiratory system work together to provide oxygen and remove carbondioxide gas.
Learn more about system here: https://brainly.com/question/14323743
Why do we want to produce genetically different organisms?
Answer: Genetically engineered crops produce higher yields, have a longer shelf life, are resistant to diseases and pests, and even taste better.
Explanation:
How does natural selection lead to the evolution of a species?
Answer:
One of these is natural selection, which is a process that increases the frequency of advantageous gene variants, called alleles, in a population. Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation.
Explanation:
Why do we care how strong a rock is?
Answer:
hahahahahahahaha
Explanation:
because
Answer:
to throw it at ur cheating bf
Explanation:
lma.o
° • .°• ✯
★ * ° °·
. • ° ★ • ☄
▁▂▃▄▅▆▇▇▆▅▄▃▁▂
2. Write the complementary DNA strand: (1 points)
CTT GAC TGA TGC
disadvantages of pedigree analysis
list the planets from smallest to largest
Answer:
Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter
Explanation:
Answer:
Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter.
Explanation:
hope this helps!!!:)
Which of the following planets has the largest elliptical orbit?
A. Jupiter
B. Uranus
C. Saturn
D. Earth
What type of volcano is pictured below?
composite volcano
shield volcano
strato-volcano
cinder volcano
Answer:
the answer is the shield volcona
Why do siblings always look different from each other even though they have the same parents? *
A. Siblings look exactly the same.
B. This is because there are always random mutations in everyone's DNA.
C. There is no reason, this is just random.
D. Due to meiosis, siblings each get slightly different genetic information from both parents.
which one ^
Answer:
Siblings look different cause of the genetics combining through child creation
Explanation:
Why do we not use a Punnett Square to determine the offspring for asexual reproduction? Is that form of reproduction diverse? Explain your answer.
Answer: There isn’t another organism to cross with
Explanation:
In asexual reproduction there is only one parent so all the genes come from one person.
What happens to chromosomes when an ovum and a sperm meet at fertilisation
Answer: When egg and sperm cells combine in fertilizations, they merge the two sets of chromosomes, ending up with 46 chromosomes in total. The maternal chromosomes from the egg cell and the paternal chromosomes from the sperm cell pair up. The resultant cell is called a zygote. Fertilization happens when a sperm cell successfully meets an egg cell in the fallopian tube. Once fertilization takes place, this newly fertilized cell is called a zygote. From here, the zygote will move down the fallopian tube and into the uterus. The zygote then burrows into the uterus lining.
Explanation:
Which function of the integumentary system is illustrated in the release of sweat?
Absorbtion
Protection
Sensory Reception
Regulation
Secretion
Both regulation and secretion
Answer:
Secretion
Explanation:
Not completely sure tho, good luck
One Multiple Choice (A, B, or C) question and one True/False question.
For probability and permutations and combinations
White blood cells ingest, then digest, a number of bacteria and other pathogens. White blood cells would require high numbers of which organelle in order to function properly?
Answer:
Lysosome
Explanation:
Which of the following is an advantage of meiosis and sexual reproduction?
A. Meiosis ensures that offspring will not inherit any genetic disorders.
B. Meiosis ensures that offspring are genetically identical as their parents.
C. Meiosis ensures that offspring will have identical phenotypes to their parents.
D. Meiosis ensures a wider variety of genetic variation.
Answer:
D. Meiosis ensures a wider variety of genetic variation.
This happens above all thanks to the Crossing over, the process in which the exchange of genetic material during sexual reproduction between two homologous chromosomes' non-sister chromatids results in recombinant chromosomes.
What percentage of Americans use solar power ?
Answer:
66.7 percent.
Explanation:
CTT GAC TGA TGC
3. Transcribe the DNA Strand (answer to previous question) to an mRNA strand:
(2 point)
Answer:
GAA CTG ACG
Explanation:
this will be the complementary DNA strand.
A=T
G=C
C=G
and above you will see the answer key for any DNA strand complementary.
What are the two most common sources for rivers and streams?
Answer:The source of a river or stream may be a lake, a marsh, a spring, glacier, or a collection of headwaters. The furthest stream is called the headstream. Headwaters are small streams that create the river or stream and may be cool waters, because of shade and barely melted ice or rain.
Explanation:I did this in class 2 days ago LOL
Answer:
The source of a river or stream may be a lake, a marsh, a spring, glacier, or a collection of headwaters. The furthest stream is called the headstream. Headwaters are small streams that create the river or stream and may be cool waters, because of shade and barely melted ice or rain.
Explanation:
Hope this helped you :D
What is the meaning of the term metabolism?
Which best describes the end result of meiosis?
O A. two diploid cells identical to the parent cell
o B. four haploid cells identical to the parent cell
C. two diploid cells different from the parent cell
D. four haploid cells different from the parent cell