Answer:
F = -3000 N
Explanation:
Given that,
Mass of the car, m = 200 kg
A roller coaster containing four cars is accelerating at -15 m/s²
We need to find the force exerted on the roller coaster to bring it to a stop. Let F is the force.
F = ma
Putting all the values,
F = 200 kg × (-15 m/s²)
= -3000 N
So, the force us 3000 N and it act in opposite direction.
80 points!
I need a one paragraph explanation of what a landform is.
I also need a one paragraph explanation of what a relief map is.
Thanks!
4. In what temperature range is amylase active?
Answer: 40 degrees c
Explanation:
it shows a spike so the most active.
what process has the effect of changing ploidy?
Answer:
Ploidy is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. For many organisms, especially plants and fungi, changes in ploidy level between generations are major drivers of speciation
Explanation:
Hope this helps.. this is something I got from a website. I didn't got the paste and the copy from someone else..
;)
Meiosis and fertilization are cellular processes capable of changing the ploidy level.
The ploidy level refers to the number of sets of homologous chromosomes in a given cell type.Meiosis is a type of cell division that is capable of reducing the number of chromosomes in the parent cell and thus produces four (4) gametes or germ cells.These gametes contain half the normal (i.e., somatic) number of chromosomes. During fertilization, two gametes combine to re-establish the ploidy level, i.e., the normal chromosome number in somatic cells.Thus, fertilization can restore the ploidy level of the parents.In conclusion, meiosis and fertilization are cellular processes capable of changing the ploidy level.
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A student is developing a model to show how most proteins are synthesized in animal cells. Which organelles would be LEAST useful for the student to include in the model?
a. ribosomes
b. endoplasmic reticulum
c. Golgi apparatus
d. chloroplasts
Answer:
Hey buddy, here is your answer. Hope it helps you.
Explanation:
C- Chloroplasts. The chloroplasts are only present in plant cells . In plants it used for making of food and gives the color to the plants. In animal cells it is not present as we don’t require to make our own food.
the distance from Earth to the sun is
a. 15 AUs
b. 1 AU
c. 150,000,000 AUs
D. unable to be measured
Answer: D
Explanation:
Answer:
The correct answer is C. 1 AU
Explanation
I got C correct in the Exam
What are the cons of purchasing a home? A. Buyers are typically required to buy homeowner's insurance. B. Home owners have to pay for their own home repairs. C. Buyers must have necessary funds and/or qualify for a loan. D. All of the above I WILL BRAINTELEST
Answer:
D
Explanation:
What is an example of a body fossy
Answer:
do u mean fossil? If so then Some examples of body fossils include bones, teeth, feathers, or claws. Body fossils are fossils that come from the organism itself. The dinosaur
Natural erosion can be caused by _______.
a.
farming
b.
wind
c.
deforestation
d.
all of the above
Answer:
Deforestation
Explanation:
Erosion may occur when deforestation is in place, it sweeps land into the rivers. If this isnt the answer then it might be all of the above
Answer: B. wind
Explanation: The question is asking for "natural" erosion which occurs "naturally". Farming and deforestation both DO NOT occur naturally- it is done by HUMANS. Wind would be the only correct choice on edge2020 :)
Which is a component of the biosphere?
A.
argon
B.
permafrost
C.
mountains
D.
bacteria
Answer:
D. Bacteria
Explanation:
The biosphere is the layer of the Earth where all living organisms live and interact with each other. The biosphere is a broad concept that includes all the regions of the Earth where an organism can live or where organic material can exist. Since bacteria is a living microorganism, it is considered a component of the biosphere.
Easy 10 points , look at the picture and answer the question
According to the Law of Superposition, what layer is the oldest rock layer?
the last layer deposited
the first layer deposited
the second layer deposited
the intrusive deposition
Answer:
the first layer
A natural community interacting with its abiotic environment is a description of
That would be an ecosystem.
(hope this helps ^^)
Answer the questions
Answer:
This is for the table at the top
Plentiful roaming space- increase - because they have more space they can live in.
Severe drought - decrease- because they wont have enough water
abundant food source - increase - Because they have enough food to sustain themselves
Habitat destruction - decrease - Because they won't have a place to live in
Elimination of predators - increase - Because there will be less animals hunting them for food.
Lack of competition - increase - Because they won't have to compete for food which will allow them to have more.
Disease outbreak - decrease - Because the disease will kill a lot of them and can potentially cause birth rates to go down
The two types of Earth's crust are oceanic and ______________________. *
A. convergent
B. geothermal
C. divergent
D. continental
Answer:
D
Explanation:
Can I please know the answers thanks I’ll mark the brainliest!
*
All cells formed from pre-existing cells
false
true
Answer:
TRUE is the answer.Explanation:
This is because "All cells form from pre-existing cells" is part of the cell theory.A German doctor, Rudolf Virchow found out about this phenomenon and proposed this fact to other scientists.When it was proved to be true, it was made to be a part of the cell theory.So, consequently, the answer would be true.The answer is True.Hope this helped,
Kavitha Banarjee
What processes draw the flow of carbon between living and nonliving components of ecosystems? Choose all that apply.
photosynthesis
evaporation
decomposition
cellular respiration
Answer:
A and B maybe
Explanation:
Answer:
A, B, and probably D
Explanation:
Question 4 (1 point) If 18 grams of oxygen reacts completely with 4 grams of hydrogen, we would expect how many grams of water?
A. Less than 22 grams because some mass is lost in the reaction
B.More than 22 grams because the oxygen gains mass during the reaction
C.22 grams because mass cannot be created or destroyed
D. There is no way to tell from this information.
Answer:
C.22 grams because mass cannot be created or destroyed
Explanation:
Reaction equation:
2H₂ + O₂ → 2 H₂O
Mass of oxygen = 18g
Mass of hydrogen = 4g
The mass of water produced is 22g according to law of conservation of mass.
The law states that " in a chemical reaction, mass is always conserved"
The sum of the mass of product and reactants must always be the same.
Yasmine is asked to describe the structural organization of chloroplasts. She writes the following sentence:
"A chloroplast contains thylakoid stacks, called stroma, that are surrounded by fluid-filled grana."
Which change to the sentence is necessary to make the sentence accurate?
A. Replace "grana" with "chlorophyll."
B. Replace "stroma" with "chlorophyll."
C. Exchange the positions of "stroma" and "grana."
D. Exchange the positions of "thylakoid" and "stroma."
Answer:
C. Exchange the positions of "stroma" and "grana."
"A chloroplast contains thylakoid stacks, called grana, that are surrounded by fluid-filled stroma."
Explanation:
A dynamic biochemical process, photosynthesis, occurs within the chloroplasts of plants. Here, to form stable carbohydrates, light energy is transformed into chemical energy.
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
Carbon Dioxide + Water + Light Glucose + Oxygen
Chloroplasts are tiny, highly-folded, membrane-bounded organelles containing enzymes, pigments and other molecules that mediate photosynthesis. In the stack of grana, pigments like chlorophyll, absorb light energy for the light-dependent reactions.
Please help it’s urgent!!!! For these two questions
Answer:
C - Blanket of clouds that cover the sky
C- Rain freezing before it hits the ground
hope i helped
Which is an example of a solute?
soil suspended in water
sugar that is dissolved in water
O water that dissolves salt
O water with undissolved soil
Answer:
I believe its the first one
Explanation:
I've done an experiment on this and water dissolves in salt.
Why are bacteria a necessary part of the nitrogen cycle?
Other living things cannot use atmospheric nitrogen.
Other living things cannot use the nitrogen in plants.
Bacteria are the main nitrogen reservoir.
Bacteria are the main nitrogen transpirators.
Answer: The answer is... (A) Other living things cannot use atmospheric nitrogen
Explanation:
Other living things cannot use the nitrogen in plants except bacteria which has the ability to use and convert nitrogen.
Role of bacteria in Nitrogen cycle
Atmospheric Nitrogen gas can't use by the plants directly but the bacteria are able to use the atmospheric nitrogen and convert it in available form to the plants.
The decomposers, soil bacteria and fungi break down proteins in dead organisms and animal wastes, releasing ammonium ions which can be converted to other nitrogen compounds which make the bacteria an important part of nitrogen cycle.
In conclusion, bacteria is the only organism which can use nitrogen.
Learn more about bacteria here: https://brainly.com/question/1321790
Which of the following statements about populations in a community are true? Check all that are true.
Check all that are true.
One population may include members of multiple species.
One population may compete with another population for food.
One population may compete with another population for shelter.
One population may serve as a food source for another population.
Answer:
One population may compete with another population for food. One population may compete with another population for shelter. One population may serve as a food source for another population.
Explanation:
In animals, what types of cells differentiate from the outer layer of cells?
a. Middle layer?
b. Inner layer?
Which statement about the relationship between interphase, the cell cycle, and mitosis is true?
A. The cell cycle and interphase make up mitosis.
B. Interphase and the cell cycle are parts of mitosis.
C. Mitosis and interphase are parts of the cell cycle.
D. Mitosis and the cell cycle are parts of interphase.
Answer: C.Mitosis and interphase are parts of the cell cycle.
Explanation:Interphase is actually the longest stage of the cell cycle. This is the point where the cell prepares itself for division. It is composed of 3 phases:
G1 phase - is when the cell starts to grow and copies its organelles.
S phase - it starts making copies of its DNA and makes a copy of its centrosome.
G2 phase - continues to grow and produces the proteins or enzymes that will be used in the process.
After the stage of interphase, the cell will enter its M phase or mitosis in the case of body cells. Mitosis is the process of cell division.
Answer:
c
Explanation:
mitosis and interphase are part of the cell cycle
Please help!
Drag each tile to the correct box.
Arrange the processes in the order they occur during embryonic development and cell differentiation.
1. formation of the lining of the digestive tract
2. development of heart muscle cells
3. fusion of the sperm and egg
4. differentiation of inner cell mass
5. development of the morula
3. (04.03 MC)
which description properly describes a step involved in cellular respiration? (4 points)
Glucose is created, then the energy gained is transferred to the energy molecule.
Carbon dioxide is combined with oxygen to make glucose.
Water is divided into carbon dioxide and glucose.
Oxygen is combined with the carbon atoms left from the glucose molecule.
Answer:
Oxygen is combined with the carbon atoms left from the glucose molecule.Explanation:
Plants are producers that make polysaccharides through the process of photosynthesis. These polysaccharides, are used to store chemical energy stably in their covalent bonds.
Mitochondria break down sugars in cellular respiration. Aerobic respiration for instance, breaks down glucose in the presence of oxygen, which produces carbon dioxide and water, while transferring energy to the molecule ADP, to produce ATP (adenosine triphosphate).
C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP
glucose+ oxygen → carbon dioxide+ water+ energy
Oxygen is the final electron acceptor, it combines with the leftover carbons in respiration resulting in the waste product [tex]CO_{2} \\[/tex].
Answer:
Oxygen is combined with the carbon atoms left from the glucose molecule.
Explanation:
I just got i correct <3
What does an equation that shows water and carbon dioxide combining to form glucose and oxygen represent
a)Krebs cycle
b)Cellular respiration
c)Photosynthesis
d)Fermentation
Answer:
c)Photosynthesis
Explanation:
In bacteria, plants, and other eukaryotic species, photosynthesis is a biochemical process that is important for energy production; here, chemical energy is produced in the form of glucose molecules from:
Water Carbon dioxideLight energy
During photosynthesis, inorganic carbon is fixed by plants into high-energy carbohydrates and oxygen as a waste product...
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
Carbon Dioxide + Water + Light Glucose + Oxygen
Which is not a part of the cell theory?
a. cells are the basic building block for living things.
b. all living things are made up of one or more cells.
c. animal cells are more advanced than plant cells.
Answer:
c
Explanation:
Answer:
The answer is C.
Explanation:
The cell theory has three parts; all living things are made of cells, cells are the basic units of life, and any cell comes from a pre-existing cell. So with these points, you can see that C is not a part of the cell theory.
Hope this helps :)
What are the alternate energy sources that are starting to replace the use of coal in the U.S.?
Answer:
Wind and solar power!
Explanation:
