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°
After a devastating forest fire, the surrounding area contained no life. After some time, small plants began to grow along the remaining soil.
Answer:
Yes.
Explanation:
Yes, small plants began to grow along the remaining soil because of the presence of seeds in the soil that sense suitable environmental condition and come out of the soil. The ashes of burn trees have huge amount of nutrients in the form of minerals that triggers the growth of small plants. After the destruction of forest, new plants grow on that land, this type of phenomenon is called ecological succession.
Answer: CORRECT (SELECTED)
Secondary succession
Explanation:
Secondary succession occurs when a previously occupied area is recolonized after a disturbance kills most, or all, of its community.
A large industrial company manufactures paper products such as paper towels and napkins using wood pulp. Which of these BEST describes why wood is considered to be a 'renewable' resource?
Answer: The question is incomplete because the options were not given but the options has been gotten from another website.
Here are the options.
a. Wood is routinely recycled to make new wood-based products.
b. Wood products can be manufactured from different tree species.
Eliminate
c. Wood may be replenished by planting new trees to replace those being used.
d. Wood products can be manufactured using various other materials such as plastics.
The correct option is c.
Wood may be replenished by planting new trees to replace those being used.
Explanation:
This is because wood is a Renewable resource because Renewable resources are resources that can be replenish or reproduce again after usage either by naturally producing another one. Theses resources are not exhausted because they can naturally be reproduce again. Wood is a Renewable resources because new ones are planted to replaced the used ones.
Unicellular organisms can reproduce, move, are simple, eats.
Which word is not true.
Answer:
So, they do eat...they do reproduce...they are simple...and can move.
So if you were lazy and skipped a type of food mentioned or anything, please ask the entire question, with all the included words. This way I can evaluate from how/the way they say it.
100 POINTS!!!!
HAS ANYONE DONE THE LAB: Pigeonetic ASSIGNMENT IF SO COULD U SEND THE WORKSHEET
Answer:
I have not done it yet give me a sec
What reacts with sulfur dioxide in
the atmosphere to form acids that
return to the surface as either dry
or wet deposition?
Answer:
Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
Animals release _____ into the atmosphere through _____
Answer:
animal release carbon dioxide into the atmosphere through respiration
Explanation:
When an animal breathes, it takes in oxygen gas and releases carbon dioxide gas into the atmosphere. This carbon dioxide is a waste product produced by the animal's cells during cellular respiration.
Animals breathe, taking in oxygen and releasing carbon dioxide. Animals release carbon dioxide gas into the outer atmosphere through respiration process.
What is respiration?
This process completes in two steps: external respiration and internal respiration. External respiration, or breathing, includes inhaling (inhalation) oxygen from the outside atmosphere and exhaling (exhalation) carbon dioxide to outside. In this process, gas exchanges take place at the lungs, and deoxygenated blood oxygenates before going back to the left heart.
In cellular respiration, the cell takes oxygen from the oxygenated blood and uses it in different cellular metabolic reactions, releasing carbon dioxide into the blood. So in cellular respiration, oxygen is taken up by the cell and carbon dioxide is released by the cell. This carbon dioxide goes to the lungs, and by the process of exhalation, it is released into the atmosphere.
Hence, animals release carbon dioxide into the atmosphere through the respiration process.
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55 POINTS!! PLEASE HELP ME
Explanation:
1. granatic
2. basaltic
Answer:
1. B
2. A
Explanation:
Which tissues are in both leaves and roots? (Select all that apply.)
xylem
phloem
stomata
pistil
Answer:
the answer is phloem and xylem
Explanation:
they are both in the leave and the roots.
Plzz help
Determine the proper number of chromosomes that would be found in a human cell at each stage of the cell cycle.
Answer: The genetic material of the cell is duplicated during S phase of interphase just as it was with mitosis resulting in 46 chromosomes and 92 chromatids during Prophase I and Metaphase I. However, these chromosomes are not arranged in the same way as they were during mitosis.
Explanation:
The illustration shown is an ovum, a female sex cell. A mutation in this cell may be passed to the woman's offspring during
A)
birth.
B)
mitosis.
C)
DNA replication
D)
sexual reproduction.
Answer: C) DNA replication
Explanation: A mutation in this cell may be passed to the woman's offspring during During this process, the nucleus of a cell divides to form two nuclei that are identical to the original cell. (AKA DNA replication)
Answer:
the correct answer is D
Explanation:
One condition in the body that needs to be controlled is the level of
water. Give one other condition in the human body that needs to be
controlled.
Answer:
Levels of electrolytes, blood sugar, temperature etc
How does water change the shape of Earth's surface?
I
Answer:
water can dissolve rocks and cement thru a process called erosion
Explanation:
Answer:
Without the oceans the Earth would look like it had dents in it. It wouldn't have the round smooth-ish appearance it has with the water.
Why are DNA fingerprints are more reliable than hand fingerprints in solving crimes.
2. Write the complementary DNA strand: (1 points)
CTT GAC TGA TGC
Is the following cell a plant of an animal cell? How do you know? Plant cell because there is a cell wall and a chloroplast O Plant cell because there is a large vacuole and a cell wall 0 Animal cell because there is a cell membrane and no chloroplasts O Animal cell because it has a cell wall and a a large vacuole
Answer:
A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.
Explanation:
Adaptations that result from natural selection are expected to increase
the fitness of an organism. In terms of natural selection, which of the
following best describes fitness?
A Being able to escape from predators
B Being among the strongest organisms in a population
C Being able to survive, find a mate, and produce offspring
D Being able to survive long enough to reach the adult stage
A prey population consists of individuals with a variety of running speeds. 10 points
Answer:
C
Explanation:
Trust meeeeeeeeeeeeee
Justine is ice-skating at the Lloyd center what is her final velocity if she accelerates at a rate of 2.0m/s for 3.5 seconds?
7 m/s
Explanation:
Acceleration,
Where v and u are the final and initial velocities of the Justine respectively, t is the time taken for Justin to attain final velocity.
Making v the subject then
v=at+u
Taking u as zero then
Substituting 3.5 for t, 2 as a then
v=3.5*2=7 m/s
How many calories do I need to gain muscle i am 75 pounds and 4 foot 5
Answer:
is there a reon why u want to gain mucle
Explanation:
22. Carbon dioxide gas production happens within me...
A. Chlorophyll
B. Glycolysis
C. Mitochondria
D. Ribosome
please help me with this it’s due today
Answer:
The correct answer is - 0 m/s.
Explanation:
In this position-time graph or distance-time graph, there are three different part that shows three different velocities one in increasing as it moves from a lower position in relative to time and one is stationary and the third is decreasing.
'Straight lines' on a distance-time graph suggest that the movement of the object is constant. During 'Part B' of the journey the object travels 0m in 3s. It is stationary for 3 seconds so the velocity will be zero as well.
HELPP PLEASEEEE FASTTTT
Both parents in the example carry the dominant and the
recessive alleles for a trait (heterozygous). What is the
probability of the offspring expressing the recessive
phenotype?
Answer:
25%.................
Answer:
D, 25%
Explanation:
We can do this with simple math! Since we have a 1:4 ratio of possibly expressing the recessive phenotype, we will do 1/4.
1/4 = .25
Then, we will multiply this by 100, which results in 25.
IS IT WEATHERING, EROSION, OR DEPOSITION?
Over time, the running water wears down rocks, making them smooth.
Answer:
Weathering
Explanation:
The answer is weathering because, weathering is the breaking or wearing down of rocks, soil, minerals, and wood. The water wore down the rock, making it smooth, so it connects to the definition that i just gave you.
Hope it helped!
Illness or condition that negative affects my organ
System
Answer:
some illnesses that can affect your organ system are heart disease, asthma, and cancer
Answer:
Autoimmune hepatitis, Graves' disease, type 1 diabetes, and Cystic fibrosis.
Explanation:
Throughout history, amoebic dysentery has resulted in the deaths of many soldiers. Deaths from this illness have often exceeded the number of deaths from wounds.
What likely led to the high rate of infection by the amoeba that causes this disease?
A. lack of available vaccines
B. lack of doctors to treat the sick soldiers
C. lack of vitamins and minerals in the diet
D. unclean food and water on the battlefield
What is the relationship between capillaries and lymph vessels
Answer Blood vessels deliver oxygen and nutrients to virtually all cells in developing mammalian embryos and adults, whereas lymphatic vessels drain the interstitial fluid that collects in tissues, and serve as a conduit for immune cell trafficking and fat absorption.
: Lymphatic capillaries collect lymph fluid from the tissues, which allows them to regulate the pressure of interstitial fluid. This fluid is essentially plasma that leaks out of cardiovascular capillaries into the tissues due to the forces of hydrostatic or oncotic pressure.
Hope this helps have a awesome day/night❤️✨Explanation:
what is released into the cell during glycosis?
cellular respiration,glucose is oxidizedto Carbon dioxide and water
Edrophonium is a drug the blocks cholinesterase from breaking down acetylcholine in the muscles. Why does this improve Annie's muscle function?
Answer:
Edrophonium is a drug used for the treatment of myasthenia gravis, a long-term neuromuscular disease that leads to varying degrees of skeletal muscle weakness, which results from antibodies that block or destroy nicotinic receptors at the junction between the nerve and muscle. By blocking cholinesterase, an enzyme which demolish acetylcholine, it increases the amount of acetylcholine in the neuromuscular junction improving the muscle weakness
It improves Annie's muscle function as a result of the acetylcholine not
being able to be broken down in the muscles.
Acetylcholine is a neurotransmitter that sends signals to the brain and other
parts of the body in the activation of the skeletal muscles.
The drug known as Edrophonium which blocks cholinesterase breaking
down acetylcholine in the muscles will thereby lead to more presence of
acetylcholine and a corresponding increase in the muscle functions.
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Cell respiration occurs in
heterotrophs only.
all eukaryotes.
animals only.
only.
Answer:
Cell respiration occurs in all eukaryotes
2. In restaurants, most food contact surfaces are smooth and lack cavities/pores in their surface. What is the advantage of that for microbial control?
Answer:
Microbes and Bacteria can be killed more easily and so they cant hide in the little pores.
Explanation:
What is a learned behavior?
A behavior passed down from parents
A behavior shaped by the environment
A behavior that develops naturally
A behavior that helps an organism camouflage
A learn behaviour is a type of a behaviour shaped by the environment.
What is learned behaviour?Learned behaviour can be defined as the type of behaviour where by an organism develops a new way of living through life experiences from its environment.
Therefore, a learn behaviour is a type of a behaviour shaped by the environment.
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