A teacher places four books of different masses in a bookcase. The diagram shows the placement of the four books
The teacher states that the books are arranged in the bookcase for the lowest overall potential energy when only one book is on each shelf.
a. Use inequality symbols (<, >) to identify the relationship among the masses of all four books.
b. Describe how the arrangement of the books can be changed for the greatest overall potential energy when only one book is on each shelf.
Answers
a. P.E(Y)< P.E(W)< P.E(Z)< P.E(X)
mass m(Y)< m(W)<m(Z)<m(X)
b. The books arranged with book X in the bottom, book Z in 2nd position, book W in 3rd and book Y on the top.
What is gravitational potential energy?If an object is lifted, work is done against gravitational force. The object gains energy.
The equation for calculating gravitational potential energy is
GPE =mgh
where, GPE is the gravitational potential energy, m is the mass, h is the change in height and g is the acceleration due to gravity.
a) According to the heights of books, P.E(Y)< P.E(W)< P.E(Z)< P.E(X)
when arranged for lowest potential energy, book with the lowest mass will be placed in the lower position. Thus, relationship among masses, m(Y)< m(W)<m(Z)<m(X)
b) The arrangement of the books can be changed for the greatest overall potential energy when only one book is on each shelf. The books arranged with book X in the bottom, book Z in 2nd position, book W in 3rd and book Y on the top.
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Answer:
So if a person breaks a window to get into the house or break open your cupboard to steal, it is considered burglary. Usually, an HPP covers burglary but not theft. Theft would mean the person committing the crime had access to the house or its valuables.
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Explanation:
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Answer: it can be considered a genetic mutation with a history of a Golden Retriever in their blood but it is very rare. and there our some black retrievers you can buy too. i hope i helped
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Genetic variation can occur amongst siblings since:
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Answer:
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Answer:
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Explanation:
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Answer:
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Explanation:
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Answer:
Explanation:
you didnt answer my question so ya i am in 6 grade i dont now that sorry
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Answer:
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Explanation:
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Answer:
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Answer:
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Provide one reason why it would be hard for an alien to view the Earth with a light telescope.
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Answer:
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Explanation:
The brightness of the Earth makes it difficult for an alien to view it with a light telescope. The light from the sun reflects off of the Earth's surface and this makes it very difficult to see anything else. The light from the sun can also cause the Earth's atmosphere to glow, making it even harder to see anything else.
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In the real world, the pendulum in a clock eventually comes to a stop. Someone or something needs to supply energy for the clock to continue to work. Why do you think the pendulum cannot continue moving on its own forever? Where does its energy go?
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Answer:
USING LAW OF CONSERVATION OF ENERGY
Explanation:
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Answer:
A. The volume of the object
Explanation:
First of all, it can only PROBABLY be A or D
But why is it only A?
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Answer:
It would be advantageous to borrow money if you expected prices to rise.Borrowers benefit from unanticipated inflation because the money they pay back is worth less than the money they borrowed. obtaining income in the form of the interest and finance charges on the loan.
Explanation:
Circle the letter that corresponds to the best answer.
3. Which statement do you agree with? ( LO6 , 7 )
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c) The main reason we have a large trade deficit is that foreigners refuse to buy American goods and services.
d) The main reason for our large trade deficit is our relatively low rate of economic growth.
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Answer:
D
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The main reason for our large trade deficit is our relatively low rate of economic growth.
Explanation:
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Explanation:
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1. Why is only a small portion of the solar energy that strikes Earth's atmosphere stored by primary producers?
Answers
Explanation:
only a fraction of radiation strikes plants or algae and only a portion of that fraction is of wavelengths suitable for photosynthesis and much energy is lost as a result of reflection or heating of plant tissue
Only a small portion of the solar energy that strikes Earth's atmosphere is stored by primary producers primarily due to the limitations and inefficiencies in the process of photosynthesis.
Photosynthesis is the biological process by which primary producers (such as plants, algae, and some bacteria) convert solar energy into chemical energy in the form of glucose (a type of sugar). However, photosynthesis is not a perfectly efficient process, and several factors contribute to the small fraction of solar energy being stored:
Reflection and Absorption: Not all incoming solar energy is absorbed by the plants. Some of it is reflected back into space or absorbed by other substances in the atmosphere, water bodies, or the Earth's surface before reaching the photosynthetic organisms.
Wavelengths: Solar energy reaches Earth in the form of electromagnetic radiation, which includes different wavelengths. Chlorophyll, the primary pigment responsible for capturing light during photosynthesis, is most efficient at capturing certain wavelengths, particularly in the blue and red regions of the electromagnetic spectrum. The rest of the spectrum is less effectively utilized by the photosynthetic organisms.
Light Availability: Photosynthesis requires sunlight, so the amount of energy captured is also influenced by factors like the length of day and cloud cover. Weather conditions can limit the availability of sunlight, impacting the overall energy capture.
Respiration: Plants and other primary producers also use some of the energy they capture for their metabolic processes, including respiration, where they consume glucose to obtain energy for growth, maintenance, and reproduction. This reduces the net amount of energy stored as biomass.
Losses in Growth and Reproduction: Not all stored energy is converted into plant biomass. Some energy is used in growth and reproduction, while some is lost as heat during metabolic processes.
Hence, these factors contribute to the limited efficiency of photosynthesis and explain why only a small portion of the solar energy that strikes Earth's atmosphere is stored by primary producers as chemical energy in their tissues.
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can someone answer this
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Answer:
blizzard?
Explanation:
seems to fit the discription in my book...
Can someone answer this
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Answer:
A. The probable direction of storm movement for the next 12 hours.
Answer:
A. The probable direction of storm movement for the next 12 hours.
Explanation:
In the northern hemisphere, air circulation is counterclockwise around a low pressure system. The arrow drawn on the diagram is below (south of) the center of low pressure, so the winds will be to the east in that area. The arrow is pointed in the direction of probable frontal system movement.
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Other answer choices:
The map is of a portion of the eastern part of the North American continent. There is no ocean in the area of the frontal system or the arrow, so ocean currents are irrelevant to what the arrow is showing.
Convection currents in the atmosphere are vertical air currents. The horizontal arrow cannot show anything about convection currents.
Due to jet stream and trade wind direction over North America, the storm system shown would have originated farther to the north and west. The arrow points to the east northeast, so is not pointing in the direction of the origin of the storm system.
Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can hear him through the other. What is the best reason to explain why this happens?
A. Sound waves can travel great distances.
B. Sound waves from whispering have a higher frequency.
C. Sound waves travel better through solids than gases.
D. Sound waves produce an echo.
Answers
Answer:
C
Explanation:
Because you can feel vibrations through solids but not through gases
Answer:
c
Explanation:
Because you can feel vibrations through solids but not through gases
Can someone answer this
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Answer:
b
Explanation:
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
5. We run huge trade imbalances with two countries. Explain the cause of the imbalances.
Answers
Answer:
One country could be gaining more benefit than the other.
8. What variables shift both the long-run and short-run aggregate-supply curves?
Answers
Variables shift both the long-run and short-run aggregate-supply curves are productivity, labor Wage Costs and taxes and other costs.
What is aggregate-supply?The entire quantity of goods and services that enterprises in a national economy intend to sell during a certain time period is known as aggregate supply
Variables shift both the long-run and short-run aggregate-supply curves are ;
1. Productivity
2. Labor Wage Costs.
3. Taxes and other costs -
4. Material Prices.
5. Size of labor force.
6. Stock of Capital.
Hence, variables shift both the long-run and short-run aggregate-supply curves are productivity, labor Wage Costs and taxes and other costs.
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