9514 1404 393
Answer:
time: 1.122 secondsrange: 10.693 mmaximum height: 1.543 mExplanation:
Given:
runner is launched at 30° angle to horizontal at 11 m/s
acceleration due to gravity is g = -9.8 m/s²
Find:
runner's hang time
runner's distance to the landing point
runner's maximum height
Solution:
The (horizontal, vertical) speed components will be ...
(11 m/s)(cos(30°), sin(30°)) = (5.5√3 m/s, 5.5 m/s)
The time of flight can be found from the height formula:
h(t) = 1/2gt² +vt . . . . . . where v is the vertical speed at launch
The time we're concerned with is the time when h(t)=0 and t>0.
0 = -4.9t^2 +5.5√3t = t(-4.9t +5.5√3)
The second factor is zero when ...
t = (5.5√3)/4.9 ≈ 1.122 . . . seconds hang time
__
The distance to the landing point will be the product of horizontal speed and hang time:
d = (5.5 m/s)(5.5√3/4.9 s) ≈ 10.693 m . . . . distance to landing
__
The maximum height can be found from the formula (based on conversion of kinetic energy to potential energy) ...
h = v²/|2g| = (5.5 m/s)²/(2(9.8 m/s²)) ≈ 1.543 m . . . . maximum height
Someone help please?
Pre-eclampsia is caused by?
Answer:
Pre-eclampsia is thought to be caused by the placenta not developing properly due to a problem with the blood vessels supplying it.
Explanation:
I believe this is correct, if not let me know and I will fix it. I'm sorry in advance if it is incorrect.
Explanation:
1. high blood pressure.
2. Swelling of Hands And Feet
3. Protein in urine
All else being equal, as compared to an organism with a lower surface-area-to-volume ratio, an organism with a higher surface-area-to-volume ratio would likely have less difficulty maintaining a constant internal environment. lose more heat to the environment in cold environments. have greater thermal inertia. lose less heat to the environment in cold environments.
Answer:
lose more heat to the environment in cold environments
Explanation:
This is because as an animal have large surface area, it is exposed largely and prone to loss of heat. The larger the size of an animal, the larger the surface area and volume. It's surface area expose the tendency for the animal to sweat alot , through sweating heat is loss to the environment. In cold environment, the animal try to maintain internal homeostasis and through this heat is generated and loss to the environment.
When doing medical research with human subjects, which four limitations are unavoidable?
It's often impossible to repeat trials on the same subjects. 2-Subjects may report an inaccurate medical history. 3-It can be difficult to control all possible variables. 4-It's impossible to come up with testable scientific questions for human subjects.
Answer:
It’s often impossible to repeat trials on the same subjects.
Subjects may report an inaccurate medical history.
It can be difficult to control all possible variables.
There are ethical or privacy concerns to consider.
A cell with 12 chromosomes undergoes mitosis. How many daughter cells are
created?
each daughter cell has chromosomes.
Answer:
2 daughter cells with 12 chromosomes each
what is aphids? explain in easy words
They are little soft bodied insect. They suck the plant's nutritious liquid and if they are in large number, they can kill the plants.
Which is an example of a specialized cell?
a. meristem
b. prokaryote
c. erythrocyte
d. bacteria
Explanation:
Which is an example of a specialized cell? meristem 《A》
A relationship in which one species kills and consumes another species is known as
Answer:
Predation. An interaction in which one species kills and consumes another species
mark me as brainlist
Please help asap!!!!
Answer:
3' AUGAACGGACGU 5'
Explanation:
For mRNA the complementary base pairing are Adanine always pairs with Uracil and thymine with guanine. you can also remember then as Apple Under and Car Garage.
HELP ASAP PLEASE!
Which practice would most likely deplete a nonrenewable natural
resource? *
1)harvesting trees on a tree farm
2)burning coal to generate electricity in a power plant
3)restricting water usage during a period of water shortage
4)building a dam and a power plant to use water to generate electricity
Answer:
A practice would most likely deplete a nonrenewable natural resource is burning coal to generate electricity in a power plant.
The answer is 2: Burning coal to generate electricity in a power plant.
how do you describe the shape of each sample of matter? do the ice cubes have a definite shape? how about the water? how about the vapor?
Answer:
Both no
Explanation:
be because it is liquid, they don't have fix shape
How are bacteria and archaea similar?
Answer:
Explanation:
Đều là vi khuẩn
2. Green plants produce ............. during photosynthesis. Answer
i dunno i think its carbon dioxide or oxygen
In a large population of sea stars, half of the individuals possess the red allele and half possess the purple allele. A change in the genome has been introduced, and many of those with purple allele are dying. Therefore, the red allele has become more frequent over time.
Which of the following requirements for the Hardy-Weinberg equilibrium is not being met?
Answer:
A
Explanation:
All mating must be totally random
Hardy-Weinberg equilibrium is a mathematical model that describes the genetic equilibrium of a population in terms of allele frequencies. It states that allele frequencies in a population remain constant over time in the absence of any evolutionary forces.
What are the requirements of the law ?In order for this balance to be maintained, five basic requirements must be met: large population size, random mating, no mutations, no migration, and no natural selection. In this case, the starfish population does not satisfy the fifth requirement for no natural selection.
Natural selection occurs as individuals with the purple allele die off, resulting in the red allele becoming more common over time. This type of directional selection causes allele frequencies to deviate from Hardy-Weinberg equilibrium.
Therefore, no natural selection requirement is met in this starfish population. This causes allele frequencies to change over time, leading to a deviation from Hardy-Weinberg equilibrium.
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What describes a country with less industry and whose citizens have low average incomes.
third world countries
Explanation:
are the results of countries with low exports and high imports
Which website to search for bio answers faster and more answers？
Answer:
Brainly isgood
Explanation:
Can a mango tree and a banana plant 1 point planted together produce a mango tree that has banana fruit? * O Yes O No
Answer: yes
Mango Love
While you don't need two trees to get a fruit crop, you do need both male and female flower parts. ... Generally, about a quarter of the mango flowers on one tree will contain male reproductive organs, while the other flowers contain both male and female reproductive organs, which is termed hermaphroditic.
Explanation:
Wolves are predators of deer. What is most likely to happen to the deer population if the wolf population increased? 0 stay the same increase decrease Obecome extinct
Since wolves are indeed the main predator of deer, if wolves were to increase in their population, the population of the deer will inevitably decrease dramatically.
Hope this helps and if it does, don't be afraid to rate my answer as well as maybe give it a "Thanks"? (Or even better a "Brainliest"). And if it’s not correct, I am sorry for wasting your time, and good luck finding the correct answer :)
If the wolf population were to increase, it is most likely that the deer population would decrease.
What is predator?A predator is an organism that hunts and consumes another (the prey). This is known as predation.
Predators, in general, share the following characteristics: They are usually larger than their prey or, like ants, overwhelm them by attacking in large numbers.
If the wolf population increases, the deer population will most likely decrease.
This is because wolves are deer predators, and an increase in the number of wolves means more deer will be hunted and killed by wolves.
The deer population is unlikely to become extinct as a result of an increase in the wolf population because other factors such as disease, habitat loss, or human hunting can also have an impact on the deer population.
Thus, the population will decrease.
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Glycolysis results in a net gain of ____ ATP molecules.
A.
1
B.
3
C.
2
D.
4
Answer:
C: 2
Explanation:
Glycolysis yields two ATP molecules, two NADH molecules, and two pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, generates energy in the form of ATP, NADH, and pyruvate, which then feeds back into the citric acid cycle to generate additional energy.
In the process of glycolysis, glucose eventually decomposes into pyruvate and energy, yielding a total of 2 ATP. Therefore, option (C) is correct.
What is glycolysis?The metabolic mechanism known as glycolysis is responsible for the transformation of glucose into pyruvate. This process results in the liberation of free energy, which is then put to use in the production of high-energy molecules such as adenosine triphosphate and reduced nicotinamide adenine dinucleotide. Enzymes are responsible for catalyzing each of the ten processes that make up glycolysis.
The breakdown of glucose into pyruvate and energy occurs at the end of glycolysis. This process results in the production of a total of two ATP molecules.
Therefore, option (C) is correct.
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A population of tree frogs lives in an area that has many types of plants and trees. The skin of most of the frogs is gray, which blends in better with the bark of trees than with the leaves of plants. Some of the frogs have skin that is greener in color, which blends in better with grasses and leaves. Snakes and birds are predators of the frog. Humans have come to the area and are beginning to cut down the trees. Describe the probability of survival for the three frogs of each genetic variation of skin colour if most of the trees are cut down. Use evidence in the paragraph to support your answer.
Answer:
with the normal natural predators their chances of survival are high but when humans step in entire forests can be wiped out which will endanger every species of frog
If most trees are cut down, grey individuals will not survive because they will be more exposed to predation. Green frogs will show a greater survival rate. Directional selection is favoring the green phenotype and its genotype.
What is directional selection?
Directional selection is one of the different types of natural selection.
It increases the proportion of individuals with an extreme phenotypic trait.
It causes a decrease in the number of individuals expressing intermediate phenotype, and the other extreme phenotype.
This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
In the exposed example, there is a natural environmental pressure: predation. Frogs need to camouflage to avoid being seen by birds and snakes.
Most frogs are grey. They camouflage with the bark of treesSome other frogs are green. They camouflage with the grass and leaves.The curve in a graph frequency vs phenotype shows a higher frequency of gray individuals.
When humans cut down the trees, they are applying another pressure to the population.
Since humans remove trees, grey frogs remain without a substrate in which to camouflage. They are now exposed to predation.
Birds and snakes can detect the gray frogs better and prey on them.
The grey phenotype and its genotype are affecting the animals' fitness. Grey frogs do not get to survive. So natural selection does not favor it.
Natural selection tends to benefit the green phenotype, which is now the one that increases the frogs' fitness. Green animals are not seen by predators, so they get to survive.
The curve in a graph frequency vs phenotype now shows a higher frequency of green individuals and a sharp decrease of grey frogs.
If more trees are cut down, grey individuals will not survive. However, green frogs will show a greater survival rate.
Directional selection is favoring the green phenotype and its genotype.
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Ribosomes are the site where
are produced.
Amino acids are coded for by triplet bases in RNA called
Answer:
Ribosomes are where PROTEINS are produced.
Amino acids are coded for by triplet bases in RNA called A CODON.
What is the main disadvantage of a flat map?
A Flat maps can't be made large enough that land masses appear the correct size.
B Flat maps distort the shapes and distances of the land masses.
C Flat maps are not easily carried from one location to the other.
D Flat maps are too small to accurately show details of the land masses.
Answer:
B
Explanation:
Does bone marrow make red and white blood cells?
Answer:
Red blood cells, most white blood cells, and platelets are produced in the bone marrow, the soft fatty tissue inside bone cavities. Two types of white blood cells, T and B cells (lymphocytes), are also produced in the lymph nodes and spleen, and T cells are produced and mature in the thymus gland.
Explanation:
Answer:
Yes it do produces red and white blood cells
Explanation:
Bone marrow is the spongy tissue inside bones that produces blood cells.
Bone marrow produces red blood cells, platelets, and white blood cells.
Is the alien theory a scientific claim? Why or why not?
Answer:
Yes.
Explanation:
In my opinion it is, since scientific professionals confirm that there's certainly life on space and other planets, it is not specified exactly what is out there although yes, there are certainly various creatures in space.
Society has changed its view of smoking since the 1960's. The major cause of this change was
I can tell Name two foods each rich in
Answer:
Name two foods rich in: a. Fats b. Starch c. Dietary fiber d. Protein
FatsProteinDietary fibersAvocadosSoybeanBroccoliTofuAnimal meatBarle
A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these explanations BEST describes this observation?
a. The herbicide company lost its formula and started selling poor-quality herbicide.
b. Natural selection caused pigweed to mutate, creating a new triazine-resistant species
c. Triazine-resistant pigweed is more efficient at photosynthesis.
d. More triazine-resistant individuals survived each year, soi more individuals were triazine-resistant.
e. Some individuals acquired triazine resistance during their lifetimes, and were able to pass it on to offspring
Answer:
e. Some individuals acquired triazine resistance during their lifetimes, and were able to pass it on to offspring
Explanation:
The term resistance in the exposed example refers to an inheritable change in the weed population sensitivity, which is reflected in the consecutive failure of the chemical effects on the herb population.
Herbicide might produce a genetic modification in the weed, leading individuals to survive under the effects of the chemical. The plants evolve with the capability of tolerating the chemical dose that is usually used to destroy a normal population of plagues.
Resistance to the toxic is associated with mutations in some of the genes.
A mutation is a change in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.
The selective pressure or modeling environmental factor is the triazine herbicide The weed´s response to herbicide is the survival of only those that carry mutations. Natural selection benefits these mutations. The mutated herbs survive, become more resistant, and pass the mutation to their offspring.what is gestalt psychology
Explanation:
Gestalt psychology, school of psychology founded in the 20th century that provided the foundation for the modern study of perception. Gestalt theory emphasizes that the whole of anything is greater than its parts. That is, the attributes of the whole are not deducible from analysis of the parts in isolation.
In unicellular organisms a single cell carries out all life processes then why do multicellular organisms need tissues?
Answer:
Its very easy here see we human being and animals are mutlicelluar organism We have different cells which form tissues and tissues forms organs and organs form human body
Each and every cells and tissues have their own work and functions to do
Which means that if we have absence of heart in our body we can't live because heart tissues help us ro Survive
On Earth, water is found naturally in all of these states EXCEPT ____
A. Gas
B. Liquid
C. Solid
D. Plasma
On Earth, water is found naturally in all of these states except plasma. So, the correct option is D.
What is Water?With the chemical formula H2O, water is a colorless, transparent, flavorless, and odorless chemical molecule. It is a straightforward molecule bound together by covalent connections and made up of two hydrogen atoms and one oxygen atom.
All known forms of life depend on water, which is the most plentiful material on the surface of the planet. Under typical temperature and pressure conditions, it is capable of existing in all three of the physical states of solid, liquid, and gas.
Water is an essential component of many natural and industrial processes since it is a universal solvent and can dissolve a wide variety of compounds. It is an essential part of the Earth's water cycle, and it's crucial for maintaining ecosystems and controlling temperature. On Earth, water is found naturally in all of the states such as gas, liquid and solid.
Therefore, the correct option is D.
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Which shows the levels of organizational hierarchy listed from least complex to most complex?
O population, community, ecosystem
O ecosystem, population, community
O community, population, ecosystem
O community, ecosystem, population
Answer:
I think the answer to this question is O population, community, ecosystem.
Population, community, and ecosystem show the levels of organizational hierarchy from least complex to most complex. Therefore, the correct statement is option A.
What is the community consisting of?A community is made up of all the populations of different species that live in the same area and interact with one another. A population is a group of people from the same species who live there.
A biological system remembers every one of the living organic entities for a local area, as well as the actual climate in which they live and connect. In this order, the population is the most un-complex level, as it alludes to a gathering of people of similar species.
Community is more complicated because it involves interactions between multiple species populations. Because it encompasses all living and nonliving components of an area as well as their interactions, the ecosystem level is the most complex.
Therefore, population, community, and ecosystem show the levels of organizational hierarchy from least complex to most complex.
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