4. A woman pushes a stroller with a force of 8.2 N and performs 28.7 J of work on the stroller. Over what distance was the
Force applied?
Answer:
3.5m
Explanation:
Given parameters:
Force applied = 8.2N
Work done = 28.7J
Unknown:
Distance through which the force was applied = ?
Solution:
Work done is the force applied on body to move it through a particular distance.
Work done = Force x distance
Now insert the parameters and solve;
28.7 = 8.2 x distance
distance = 3.5m
Provide at least three reasons why friction is needed.
Answer:
Although you normally hear about trying to reduce or eliminate friction, it actually has some important uses.
Since friction is a resistance force that slows down or prevents motion, it is necessary in many applications where you might want to hold items or do things and prevent slipping or sliding. In those cases, there is an advantage of having friction.
Quite often uses of frction can be seen from how things would be without friction. Without friction, you would not be able to walk, drive a car, or hold objects. Pens and pencils would not work.
Explanation:
Answer:
Friction allows people and objects to move. It provides traction for an object to start moving or change direction. It can also give people a better grip on objects. Finally, friction keeps objects in place when they are set down.
Explanation:
Sample Response
What happens when the hearts beats?
Answer:
it pumps blood
Explanation:
Answer:
When the heart beats it pumps blood into the arteries and veins connected to it.
Hope this helps
Choose
A neuron is said to be resting? *
________
When it is not transmitting an impulse
When it is transmitting an impulse
When the inner surface of the neuron is more positive
All are correct
Explanation:
i think all are correct
i guess?
Codons are triplets of nitrogenous bases on mRNA that code for a specific...
Answer:
three nucleotides—called a triplet or codon—codes for one particular amino acid in the protein. The nucleotide sequence in the DNA is first transcribed into a molecule of messenger RNA (ribonucleic acid).
How can a bacterium ensure that there is always a concentration gradient that will drive passive transport of food molecules into its cell?
Answer:
There are two major ways that molecules can be moved across a membrane, and ... is trying to be evenly distributed everywhere, like dropping food coloring in water. ... These channels are almost always specific for either a certain molecule or a ... When a molecule moves down its concentration gradient is it participating.
When a solute particle from the region of high concentration travels towards the region containing the lower solute particle is called passive transport. It is transported easily without spending energy.
Bacteria ensures that the food molecule from the surrounding will transport through the passive transport system by the concentration gradient as molecules can get in the cell by two processes.
Concentration gradient allows the movement of food from the region of high concentration towards the region of low concentration that is in the bacterial cells.
Bacterial membrane permits the movement of food molecules across its membrane easily.
Therefore food is transported to the bacteria through passive transport.
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PLEASE HELP ME I ONLY HAVE A FEW MORE QUESTIONS LEFT!!!
Answer:
1.)ribosome
2.)amino acid
3.)tRNA
4.)anticodon
5.)Codon
Explanation:
pleaseee help me answer this question!!
Answer:
its b
Explanation:
describe the difference between the cell wall and plasma membrane in terms of movement of substance into and out of cells
Answer:
The cell wall is a fully permeable membrane while as the plasma membrane is a particular membrane
Explanation:
The cell wall will allow all the substances go inside or outside while as the plasma membrane will only allow certain substances to go in or out based on the cell's needs.
Water does not contain carbohydrates, fats, or proteins which are essential components of food. Then why do we drink water?
Answer:
Water is a universal solvent, and is used in biochemical reactions that take place in the human body.
Large geographic region characterized by a distinct climate and mix of species
What did you include in your response? Check all that apply. Distance and displacement are the same in the 100-m sprint. Velocity and speed are the same in the 100-m sprint. Distance is 400 meters in the 400-m sprint. Displacement is zero in the 400-m sprint. Velocity is zero in the 400-m spri
Answer:
Distance and displacement are the same in the 100-m sprint, therefore, velocity and speed are the same in the 100-m sprint.
Distance is 400 meters in the 400-m sprint, therefore Speed is not zero in the 400 M sprint.
Displacement is zero in the 400-m sprint, therefore, Velocity is zero in the 400-m sprint
Note: The question is missing some details which is given below;
A 100-meter sprint is a race using only the straight side of a racetrack. a 400-meter sprint is a race that makes one complete lap around a racetrack. why are velocity and speed the same for a 100-m sprint but not a 400-m sprint?
Explanation:
The speed of a body is the ratio of the distance covered and the time taken whereas the velocity of a body is the rate of change of displacement with time.
Distance measures the total length of space covered throughout the duration of motion, whereas displacement measures the change in a specified direction from a specific point.
In the 100 m race along a straight line, both distance and displacement = 100 m, therefore speed and velocity are the same. However, in the 400 m race, distance covered is 400 m, but the displacement is zero since the person returns to his/her starting point. Therefore, speed is not equal to zero, but velocity is equal to zero.
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Based on the Punnett square you completed for question 7, would it be possible to produce a child without hair on the back of their hands if one of the parents had two dominant alleles? Explain.
First of all the cross you made at number 7 is incorrect
top left is correct
top right is wrong, it should be HH since you combined allele H with allele H
bottom left is correct
bottom right should be Hh since you combined allele H with allele h
8. If you cross two parents with HH and HH the offspring can't manifest the recessive gene since it's not present in both parental genotypes.
PLS HELP ME I WILL GIVE BRAINLIEST
I believe that a disease that destroys half of the population would be more difficult to survive than the disease that targets organisms with similar traits because with sexual reproduction, there will be differences in genetics. If the population reproduced asexually, then that disease would be more effective.
(Sorry if answer is wrong)
Base your answer to the question on the information below and on your knowledge of biology.
A biology student was given three unlabeled jars of pond water from the same source, each containing a different type of mobile unicellular organism: euglena, ameba, and
paramecium. The only information the student has is that the ameba and paramecium are both heterotrophs and the euglena can be either heterotrophic or autotrophic, depending
on its environment
State one way the euglena's two methods of nutrition provide a survival advantage the other unicellular organisms do not have.
No
Answer:
They can perform photosynthesis.
Explanation:
Autotrophs are organisms that can produce their own food, and heterotrophs are organisms that feed on other organisms. This means that the ameba and paramecium can eat only other microorganisms.
The euglena is not limited to this. Hypothetically speaking, if there were no other microorganisms around it (which is unlikely), the euglena would not die as long as it is exposed to sunlight. Thanks to chloroplasts, organelles that contain chlorophyll, it can perform photosynthesis - a process in which, with the help of sunlight, carbon dioxide, minerals, and water are used to synthesize food.
Respiration is a process during which energy is released from glucose. This energy is used for processes such as growth of the body. Which type of energy does respiration release?
A. Chemical
B. Thermal
C. Kinetic
D. Potential
Answer:
metabolism is the set of the chemical reactions that release energy for cellular processes.
The type of energy that does the process of respiration release is known as chemical energy. Thus, the correct option for this question is A.
What is Respiration?Respiration may be defined as a metabolic process through which living cells of an organism significantly obtain energy in the form of ATP by taking in oxygen and liberating carbon dioxide from the oxidation of complex organic substances.
During cellular respiration, energy is released through the breakdown of glucose into carbon dioxide, water, and energy in the presence of oxygen. Due to this, the form of energy that cellular respiration produces is chemical energy.
Therefore, the type of energy that does the process of respiration release is known as chemical energy. Thus, the correct option for this question is A.
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. In summary, elephants are a keystone species. Based on your knowledge of this term, explain in your own words why it is important to the ecology and ecosystems of Africa to save the elephant populations
Based on your knowledge of this term, the importance to the ecology and ecosystems of Africa to save the elephant populations is that It will save the economy if they can get them to a stable rate.
What is ecosystem?An ecosystem have each as well as every organism and the relation between the physical environment by which they must interact. The function of the ecosystem has to satisfy the need of the humans by supplying them services as well as goods from the nature.
Ecosystem has been the branch of the science which has deals with the study of the relationship between the living organisms and the natural phenomena. Ecosystem has the system in which the both living as well as nonliving organisms are present in the particular location.
There has been various types of the ecosystem such as the Grassland ecosystem, Tundra ecosystem, Desert ecosystem, Forest ecosystem and many more type of ecosystem is present in the environment.
Therefore, Based on your knowledge of this term, the importance to the ecology and ecosystems of Africa to save the elephant populations is that It will save the economy if they can get them to a stable rate.
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Carbon, nitrogen, and phosphorus are examples of nutrients that organisms need to stay alive. Nitrogen can be the Choose... in an ecosystem when its available forms are in short supply.
Answer:
Nitrogen is present in the soil in the form of ammonium and nitrates.
Explanation:
Nitrogen present in large amount in the atmosphere about 78 % by volumes but in an ecosystem such as land and water its available forms are in short supply because very less amount of nitrogen is produced due to the process of decomposition and some quantity of nitrogen comes from the atmosphere with the rainfall and mixes with soil and present in the soil in the form of ammonium and nitrates.
What kind of remote viewing device shows weather observers movements of fronts across large geographic areas?
Answer:
weather satellites
Explanation:
The weather satellites show which directions weather fronts are moving, what they look like from space and how much water content is in the atmosphere.
Weather satellites show where weather fronts are moving, what they look like from space, and how much water is in the atmosphere.
What are weather satellites?A weather satellite, also known as a meteorological satellite, is a type of Earth monitoring satellite that is predominantly used to monitor the Earth's weather and climate.
Satellites can be polar orbiting (covering the entire Earth asynchronously) or geostationary (covering the entire Earth synchronously) (hovering over the same spot on the equator).
Heat energy in the infrared spectrum is detected by the weather satellite (infrared energy is invisible to human eye). The satellite image displays objects based on their temperature (whether they are clouds, water, or land surfaces).
Observing the Earth from space with environmental satellites is one of the most important tools for forecasting weather, analyzing climate, and monitoring hazards around the world.
Weather satellites show the movement of weather fronts, what they look like from space, and how much water is in the atmosphere.
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The endosymbiotic theory states that the mitochondria of eukaryotes are the evolutionary result of a Proto-eukaryotic cell engulfing an aerobic bacterium, which then evolved into the mitochondrion. Which characteristic of mitochondria supports this theory of development? A retention of a single layer membrane B retention of the chlorophyll pigments C retention of their own genome D retention of their own nucleus
Answer:
The correct answer is - C. retention of their own genome.
Explanation:
The endosymbiotic theory is a theory that suggests that eukaryotic cells are developed from prokaryotic cells. According to this theory, organelles like mitochondria are developed in eukaryotic cells as the result of proteo-bacteria cells engulfing aerobic bacteria.
The evidence of this theory can be seen as the mitochondria has their own genome such as circular DNA and ribosomes as the prokaryotes.
How would you describe the solvent front?
Answer:
In chromatography, the solvent front is the position on the TLC plate indicating the furthest distance travelled by the developing solvent (or eluent) Once a TLC place is developed in a TLC chamber, the plate is removed from the chamber and a pencil is used to quickly mark the furthest point travelled by the solvent
Bluegill fish reproduce when males fertilize eggs laid by female fish is an example of which?
(1 point)
A.
Asexual reproduction
B.
Sexual reproduction
Explanation:
Reproduction in Fishes. Nearly all fish reproduce by sexual reproduction - the fusion of sperm produced from testes and eggs produced from ovaries. ... Fertilization is external in most fish species. Large quantities of eggs and sperm are simultaneously released into the water by females and males.
I'm not too sure what the answer is....
Explanation:
the warmclimate meant vast plant growth
Which one of the following lacks in prokaryotic cell
(a) Cytoplasm (b) Cell membrane (c) Chromosomes (d) Membrane bound nucleus
Answer:
Membrane bound nucleus
Explanation:
can someone tell me whether these equations are either parallel, perpendicular, intersect but not perpendicular, or coincide??
3x - 4y - 6
-4x - 3y - 6
Answer:
they intersect they coincide
Explanation:
coincide one line overlaps another one
they intersect the lines meet but they are not parallel or perpendicular
explain how ATP can be compared to a rechargeable battery.
Explanation:
when it's fully charged it's a ATP and when it's runs down it's ADP
and there are times when the cells need more energy and splits off another phosphate so it goes from ADP adenoside di-phosphate, to AMP, adenosine mono-phosphate
and there you have it
You notice that a group of students went on a hiking trip to Cockscomb basin. They are asked to climb a hill, by the time they reach the top of the hill some of them are almost out of breath, while others don't even make it to the top of the hill. Only a few seem not to be affected much by the climb. Plan and design an experiment in which you offer a possible explanation for the differences in breathing rate.
Answer:
It depends on the stamina of the individual.
Explanation:
The possible explanation for the differences in breathing rate is related to the daily activities of the individuals. For example, if the daily activities of the people are hard so it has big stamina and experience no difficulty in the climbing of a hill while those people who has little hard daily activities have low stamina and their breathing rates increases while climbing a hill. Where as those people who perform no daily activities have no stamina and will be unable to climb on the hill.
Complete the following complimentary DNA sequences and be sure to label the primes on the
strand as well.
3' TTTAACGGC 5'
3' GGCTATCAT 5'
5' GGCTTATCG 3'
please help I'm listing my whole file in parts, Explain the different steps involved in cellular respiration. (Focus on glucose and oxygen)
one sentence will do.
Answer:
Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.
Explanation:
Give an example from the passage of how two or more animals are connected to each other, and why the connection is important for the ecosystem.
Answer
Answer:
have a great day : )
Explanation:
The passage is not found here but two or more animals are connected to each other due to trophic relationships, which maintain the ecosystem homeostasis.
What is ecosystem homeostasis?The expression 'ecosystem homeostasis' makes reference to the overall state of equilibrium of an ecosystem.
The interaction of animals through trophic networks is critical for reaching ecosystem homeostasis.In conclusion, the passage is not found here but two or more animals are connected to each other due to trophic relationships, which maintain the ecosystem homeostasis.
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