A demonstration helps students understand a principle of roller coaster design.
At which location does the marble have maximum kinetic energy?
Location W
Location X
Location Y
Location Z
Answers
Answer:
location Y
Explanation:
The KE of a pendulum bob is maximum where it moves fastest, at the lowest point; PE is maximum at the uppermost points. When the pendulum bob swings by the point that marks half its maximum height, it has half its maximum KE, and its PE is halfway between its minimum and maximum values.
Can you Mark a brainlest Please
The kinetic energy of a pendulum bob is maximum when it moves fastest, at the lowest point. Potential energy is maximum at the uppermost points. When the pendulum bob swings by the point that makes half it's maximum height, it was half it's maximum kinetic energy and it's potential energy is halfway between it's minimum and maximum values. Thus, option c is correct.
What is kinetic energy?Kinetic energy is a form of energy it possess when any object or person is in motion . It can be defined as the work needed to be done to produce a motion in a object from rest position.
If we want to acceleration in an object then we must apply a force on a object to give motion so we can say that we required to do work for acceleration and then we can say that required is equal to kinetic energy.
Mathematically,
Kinetic energy =1/2mv^2
Where
m = mass of object.
v = velocity of object
Kinetic energy is vector quantity it means that it have both i.e magnitude and vector.
S.I unit of Kinetic energy is Joule.
Therefore, Potential energy is maximum at the uppermost points. When the pendulum bob swings by the point that makes half it's maximum height, it was half it's maximum kinetic energy and it's potential energy is halfway between it's minimum and maximum values. Thus, option c is correct.
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Related Questions
The more homologous structures two species have, the ________ closely related they may be.
Answers
Answer:
more closely
Explanation:
The more alike the structures are the more closely related the organisms are to one another.
The more homologous structures two species have, the more closely related they may be, as homologous structures are traits or anatomical features that are similar in different species.
Homologous structures are features that are similar in different organisms because they are inherited from a common ancestor. These features may have different functions in each organism, but they share a similar underlying structure. For example, the bones in the wings of a bird, the arms of a human, and the flippers of a dolphin are all homologous structures, despite having different functions and appearances. The degree of similarity of homologous structures can be used as an indicator of how closely related two species are to each other.
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What are the three forest ecosystems? (Select all that apply.)
a.) temperate
b.) taiga
c.) rocky
d.) rainforest
Answers
b, taiga
d, rainforest
An analogy compares one thing to something else that functions in a similar way. For example, you might say a person who works very hard for a long time is "like a machine."
Is this analogy true or false?
A nucleus is like a brick in a wall.
true
false
Answers
THE answers IS FALSE IF IT WAS BETWEEN CELLS AND BRICKS THEN IT WOULD BE TRUE CAUSE THEY ARE BUILDING BLOCKS. one for life and one for buildings.
Select from the drop-down to correctly complete the statement.
The
________
is the basic unit of structure and function in living things.
Answers
BC it's the basic unit!!
A student made the graph below to show the distance a toy car traveled over time.
Which statement in NOT supported by the data?
Answers
Answer:
The answer is D
Explanation:
Let's remember y=mx+b so know this equation y=2x since there is no base and there is no acceleration what so ever there is a constant.
I'll give brainliest to the person with the correct answer
Answers
Answer:
You are correct it's the earth!
Explanation:
The reason why is because, the term "elliptical orbit" is used in astrophysics and astronomy to describe an oval-shaped path of a celestial body. The Earth, as well as all the other planets in the Solar System, follow this type of orbit around the Sun. The shape is created by the varying pull of forces, such as gravity, on two objects, such as the Sun and a planet.
Hope this helps! :)
Because The reason why is because, the term elliptical orbit is used in astrophysics and astronomy to describe an oval-shaped path of a celestial body. The Earth, as well as all the other planets in the Solar System, follow this type of orbit around the Sun.
I'll give brainliest to the person with the correct answer
Answers
Answer:
C or the inner and outer planets.
Explanation:
Answer:
Inner and outer planets
Explanation:
The asteroid belt is located in orbit between the planets Mars and Jupiter. The asteroid belt not only contains asteroids but minor planets as well. It divides a line between inner rocky planets and outer gas giants. Earth is one of those rocky inner planets. An example of a planet on the outer gas giant side would be Saturn. This belt sort of creates a disk around the sun with the inner planets in-between. This means that the answer to your question should be inner and outer planets.
Hope this is helpful! :)
Which type of reproduction creates variation that helps a species survive? (Check all that apply.)
A. cloning
B. s3xual reproduction
C. as3xual reproduction
Answers
Answer:
B. s3xual reproduction
Explanation:
results in infinite possibilities of genetic variation. In other words, s3xual reproduction results in offspring that are genetically unique. They differ from both parents and also from each other.
Where is the Earth’s stratosphere?
Answers
Answer:
Earth stratosphere is the second layer in Earth's atmosphere.
Explanation:
its above the troposphere and under the mesosphere. have a nice day :)
Most organic compounds are made of just four elements.
What are they?
Choose four correct answers.
helium
hydrogen
nitrogen
carbon
oxygen
sodium
Answers
Which phrase describes convection?
transfer of heat between two objects that are touching
the process in which energy is emitted by one object, transmitted through space, and absorbed by another
transfer of heat by the actual movement of warmed matter
the process in which energy is released by molecules breaking apart
Answers
Answer:
The process in which energy is emitted by one object, transmitted through space, and absorbed by another.
Explanation:
So let's think about what convection means: movement in a liquid where the hotter part moves through the cooler part.
So by have the definition of the convection which one of the descriptions best fits the definition?
This probably doesn’t answer your question but I hope that it helps in some way
How does heart failure affect the lungs?
Carbon dioxide enters the lungs.
Blood leaves the lungs.
Fluid can build up in the lungs.
Too much oxygen enters the lungs.
Answers
Answer:
A damaged heart can't pump blood as effectively from your lungs out to your body. Blood backs up, raising pressure in the veins inside your lungs. This pushes fluid into your air sacs. As liquid builds up, it gets harder to breathe.
Explanation:
Describe the chemical composition of the Earth's atmosphere. Which elements are abundant? Which are not?
Answers
Answer:
Nearly all of the Earth's atmosphere is made up of only five gas es: nitrogen, oxygen, water vapor, argon, and carbon dioxide. Several other compounds are also present. Although this CRC table does not list water va por, air can contain as much as 5% water vapor, more commonly ranging from 1-3%.
Explanation:
Site: Go ogle sorry...
The Earth's atmosphere is primarily composed of nitrogen (78%) and oxygen (21%), with trace amounts of other gases such as argon, carbon dioxide, and neon. Water vapor levels vary but can reach around 4%. Additionally, there are trace amounts of various gases, including methane and ozone.
In the Earth's atmosphere, nitrogen and oxygen predominate. At around 78%, nitrogen predominates, with oxygen making up around 21%. These two gases are necessary for maintaining life since oxygen is required for breathing and nitrogen is used by plants and other living things.
Smaller amounts of other gases like neon, carbon dioxide, and argon are also present. Water vapor plays a significant effect on weather and climate, fluctuating but sometimes reaching 4%. Methane, ozone, and other trace gases are present in small levels yet have a big impact on climate, affecting greenhouse effects and atmospheric chemistry.
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A cyclist travel 9 km in 30 minutes. What is the students average speed in km/h?
A.14 km/h
B.16 km/h
C.18 km/h
D.20 km/h
Answers
The students average speed is 18km/h. So, the correct option is C.
What is Speed and Velocity?Speed is defined as the time rate at which an object is moving along a path, whereas velocity is defined as the rate and direction of motion of an object. Speed is a scalar quantity as it has only magnitude, whereas velocity is a vector quantity as it has both magnitude and direction.
Speed is expressed as
Speed= Distance/ time taken
Velocity is expressed as:
Velocity= Displacement/ Time taken
Both are expressed as meter per second. (m/s)
For above given information,
If student travelled 9km in 30 minutes
So, it will cover in 1hr = 9* 60/30 = 18km/hr
Thus, the students average speed is 18km/h. So, the correct option is C.
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what will be the correct answer for this?
Answers
‘Scientists determine the SCALE of the MODEL needed to accurately DEPICT that model.’
What stage does a flower have to reach for reproduction to take place?
1:beginning stage
2:growth stage
3:adult stage
Answers
Answer:
Growth
Explanation:
The major stages of the flower life cycle are the seed, germination, growth, reproduction, pollination, and seed spreading stages. As you can see, growth is before the reproduction so at that stage you are able reproduce.
1. Reproduction transfers _____________ information from ____________ to their ____________.
Answers
Answer:
Reproduction transfers genetic information from one organism to their other organism
Explanation:
Answer:
genetic, parents, offspring
Explanation:
If the carrying capacity of the earth was 12 billion people, when would this number be reached?
Answers
Answer:
If a population exceeds carrying capacity, the ecosystem may become unsuitable for the species to survive.
Explanation:
It has been estimated that if the carrying capacity of the earth was 12 billion people, by 2050 this number be reached.
What do you mean by carrying capacity?"Carrying capacity can be defined as a species' average population size in a particular habitat."
How do you determine carrying capacity?Carrying Capacity can be determined by:
Formula. K = r * N * (1-N) / CP.
r = Rate of Population Increase (%)N = Population Size.CP = Change in Population Size.What factors influence carrying capacity?"Factors that influence carrying capacity are food availability, water, and space."
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Explain why cell division is more complicated In eukaryotic than prokaryotic cells
Answers
Answer:
Although prokaryotes divide through binary fission, eukaryotes undergo a more complex process of cell division because DNA is packed in several chromosomes located inside a Cell dividing by mitosis.
Explanation:
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I agree with the guy
Which particle grouping can slow the speed of electrons in an atom?
a lower number of neutrons in relation to protons
a higher number of neutrons in relation to protons
a higher number of protons in relation to electrons
a lower number of protons in relation to electrons
Answers
Explanation:
The answer is B.a higher number of neutrons in relation to protons. sorry if im wrong
When the adaptive feature is enhanced by female choice, it is referred to as of what?
Answers
Answer:
S3xual selection as a consequence of female choice is easy to understand, provided we are willing to accept that female preferences exist. If females show a preference, then males with the preferred trait will leave greater numbers of offspring, and their trait values will tend to increase in frequency in the population.
Explanation:
1rst to answer "even if its wrong" gets brainly 2nd too answer gets 100 points plus a thank you and a five ⭐ rating both will get a five ⭐and thank you as well as 100 points!
Three species of birds live in the tropical forest, bird A is adapted to finding food in the trees, bird B is adapted for finding food in the water, bird C is adapted to finding food in the mud. If the biggest river in the forest was to dry out witch birds will be most and least affected, explain with complete sentences.
Answers
Answer:
bird A would be least affected.
Bird B would be the most affected.
Explanation:
hope this answers ur question
The bird that would be the most effected is Bird C. This is because it’s adapted to finding food in water and if the forest was to dry out there would be no water to find food in.
Explain what happens to the products that are produced by cellular respiration in people
Answers
Answer:
the product of aerobic respiration are carbon dioxide and energy we exhale or breathe out carbon dioxide while we take energy to use for growth repair etc
What are the types of rainforests? (Select all that apply.)
a.) rocky
b.) tropical
c.) taiga
d.) temperate
Answers
In what ways might this fish be adapted to live in an aquatic biome?
Use the sentence starter below to help you get started.
The fish adapted to living in this aquatic biome by...
Answers
Answer: by colors
Explanation:
A lot of Fish have certain colors to help blend in to their environment.
I hope this was helpful. :)
Which list of characteristics describes organisms classified as bacteria?
A.Multicellular, prokaryotic, autotrophs or heterotrophs
B.Unicellular, eukaryotic, autotrophs or heterotrophs
C.Unicellular, prokaryotic, autotrophs or heterotrophs
D.Multicellular, eukaryotic, heterotrophs
Answers
Unicellular, prokaryotic, autotrophs or heterotrophs characteristics describes organisms classified as bacteria. So, the correct option is C.
What is Bacteria?Bacteria are defined as microscopic, single-celled organisms, which are present in millions, in every environment, both inside and outside other organisms, where some bacteria are harmful, but most are useful. They serve purposes that support many forms of life, both plant and animal, and they are used in industrial and medicinal processes.
Bacteria lack a membrane-bound nucleus and other internal structures, being ranked among unicellular life-forms called prokaryotes. They are unicellular organisms that obtain their nutrition from either autotrophic mode or heterotrophic mode.
Thus, unicellular, prokaryotic, autotrophs or heterotrophs characteristics describes organisms classified as bacteria. So, the correct option is C.
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Regions of Earth experience seasons at different times.
In which position is it summer in North America?
1
2
3
4
Answers
Answer: I believe it is 4
Explanation:
Drag and drop each organelle to match it to the correct description.
Answers
Which of the following is an example of extrusive rock that has cooled too quickly for grains to form?
a.
Volcanic glass
b.
Basaltic rock
c.
Granitic rock
d.
All of the above
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer: B. Basaltic rock
Explanation:
Answer:
basaltic rock
Explanation:
there's andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff.
How do Earth’s spheres interact?
Answers
Answer:
The Geosphere
Geosphere includes all the elements that form the crust and core of the Earth. Rocks and sand particles ranging from drylands to those found at the bottom of the ocean are examples of the geosphere. Examples also involve minerals, lava, molten magma and mountains. The geosphere undergoes constant processes that modify other spheres. One of the examples is the rock cycle.
Rock Cycle
An illustration of the rock cycle
In this cycle, the melted rock from below the Earth’s crust is blown out to the surface through vents as lava. Hardened lava, together with rock materials, is weathered and eroded from earth movements. The eroded particles end up somewhere and build up. After many years of buildup, the pressure from the overlying weight causes it to bury themselves more in-depth in the crust. They are melted by the extreme heat until they are spewed out to the surface again. You may have noticed that this cycle doesn’t conclude on its own. It is affected by other factors such as the wind, temperature and water, that are a part of other spheres.
The Hydrosphere
The hydrosphere includes all the water parts of the planet. It includes water on the surface, subsurface and water vapour in the atmosphere. It undergoes infinite processes every day. The water cycle is one way to understand what is the importance of hydrosphere, its functions and how it supports other spheres.
Water Cycle
An illustration of the water cycle
The ocean and water bodies absorb the sun’s energy and warm up. Transpiration by trees and evaporation of surface water occurs. The water vapour in the atmosphere condenses to form rain clouds and comes down as rain. The rain falls into water bodies and the cycle continues. Other spheres are also impacted during the water cycle.
The Biosphere
Biosphere
An illustration of Biosphere
Biosphere comprises all the living components of the Earth. It also includes organic matter that has not yet decayed. The sphere hugely depends on the other three spheres as follows:
The hydrosphere replenishes plants and animals with water and moisture.
The geosphere renders a solid surface for the plants and animals to inhabit. It also provides heat from beneath the earth.
The atmosphere screens the sun’s UV radiation and helps us receive just enough of the sun’s heat.
A theory known as the ecosystem better explains the interaction of the biosphere with the other spheres.
The Atmosphere
Atmosphere
Different layers of the atmosphere
The gaseous component above the surface of the Earth is known as the atmosphere. It is made of gaseous components and tiny water particles. The gases in the atmosphere are kept in place by the force of gravity. The heat from the sun is radiated to the Earth and is reflected in the atmosphere. The heat from the sun warms up the surface of the earth and causes evaporation, thereby sending moisture into the atmosphere.
The atmosphere comes in layers and the illustration below shows the different layers of the atmosphere. The troposphere is the layer closest to Earth. Humans, animals and plants live in this layer. Birds and aeroplanes also fly in this layer of the atmosphere. In the layers above the troposphere, the air becomes thinner. Beyond exosphere is space.
How Do The Earth’s Spheres Interact With Each Other?
How do different spheres interact with each other?
No sphere works on its own. All the spheres in the system interact and overlap. In the section, we shall discuss the various interactions that occur among the spheres:
1. Hydrosphere and Atmosphere
The evaporation that occurs in the hydrosphere forms the medium for cloud and rain formation in the atmosphere. The atmosphere brings back this water to hydrosphere in the form of rain.
2. Hydrosphere and Geosphere
Hydrosphere provides the necessary moisture required to weather and erode rocks in the geosphere. The geosphere, in turn, allows the ice to melt and the water bodies to flow back into the oceans.
3. Atmosphere and Geosphere
The atmosphere provides the required heat and energy for the breakdown and erosion of rock in the geosphere. Geosphere, in turn, reflects the sun’s energy to the atmosphere.
4. Biosphere and Hydrosphere, Atmosphere and Geosphere
The biosphere receives sunlight and gases from the atmosphere. It collects water from the hydrosphere and a living medium from the geosphere.
All four spheres can often be found in a single location. For example, the soil may contain minerals from the geosphere, moisture within the soil from hydrosphere, insects and plants from the biosphere inhabiting the soil and pockets of air present between the soil pieces. From this, we can conclude that the complete system is what makes life as we know it.
Explanation:
How's That?