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.
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.
Learn more about gravitational potential energy
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4. And why do some producers try to block imports?
Answer:
to shield domestic markets from foreign competition.
Explanation:
Which two conditions explain why special technology is required to study the
deepest parts of the ocean?
A. Extremely high pressure
B. Thickness of ice on the ocean floor
C. Unusually high oxygen levels
D. Uneven terrain on the ocean floor
Answer:
A. Extremely high pressure
If the mass of a duffel bag is less than the mass of a suitcase, what is true if both are slid across an airport floor?(1 point)
Both objects would be able to move at the same time.
The duffel bag will contain more matter than the suitcase.
It would be much easier to stop the duffel bag than it would be to stop the suitcase.
It would be more difficult to stop the duffel bag than it would be to stop the suitcase.
Answer:
First on: False
Second one: False
Third: True
Fourth: False
Explanation:
If the duffel is less, all of the above is true.
i'll give the first person to answer a brainly
Answer:
Option b
Hope it helps...
plsss help me i need the answers
You find the answer by solving the problem.
You can solve the problem by using the equation that tells how force, mass, and acceleration are connected.
The equation is in the "Hint".
F = m • a
Force = mass • acceleration
mass = 200 kg
acceleration = 2 m/s^2
Force = (2000 kg) • (2 m/s^2)
Force = 400 Newtons
3. How does species richness relate to area?
Answer:
So increasing habitat size (or area) can increase species richness. In general the larger an area is the more species it will contain (up to an equililbrium point – the carrying capacity for # species in a given habitat). This relationship can be graphed (see below).
Explanation:
that the explanation.
12. Describe the different policy trade-offs implied by the short-run Phillips curve and the long-run Phillips curve. What forces shift the long-run Phillips curve?
Answer:
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Can someone answer this
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.
7. What three poverty traps help explain the plight of Ntions comprising the poorest billion people?
Answer:
(1) civil wars. (2) allowing resource wealth to cause internal conflicts and undermine democracy. (3) tolerating a dysfunctional and corrupt government.
Can someone answer this question
Answer:
The correct answer is C
Explanation:
carbon dioxide, water vapor, and nitrogen make up the largest percentage of earth's atmosphere
The velocity of the rocket is not the same as the speed of the rocket. What is the difference between the velocity of an object and the speed of an object
The difference between the velocity of an object and the speed of an object is that the velocity represents both the magnitude and direction, and speed represents only the magnitude.
What is velocity?
Velocity is the time rate of change of displacement.
Speed is the ratio of distance and the time taken to travel that distance.
Thus, the difference between the velocity of an object and the speed of an object is that the velocity represents both the magnitude and direction, and speed represents only the magnitude.
Learn more about velocity.
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I need the answer please help
Answer:
A) Inertia
Explanation:
Inertia is why objects tend to resist changes in their motion. Like a rolling ball will keep rolling unless we try to add friction to it, which then would stop the ball.
Answer:
Option A
Inertia = the resistance an object has to a change in its state of motion.
The blue gill is a type of fish that lives in Indiana ponds. It's diet consists of insects snails other small fish and fish eggs. What role does the bluegill play in the food web of a pond? (And i couldn't find science so i put it under physics)
Answer:
Bluegills are the primary food source in every farm pond. They spawn from May to September and provide a large amount of food to the predators in the pond.
Explanation:
2. What determines the wealth of Ntions?
Answer: The GDP of a state tells us the wealth of a Nation
Explanation: A GDP is a comprehensive measure of U.S. economic activity. GDP measures the value of the final goods and services produced in the United States
What is observed as the distance between the rest position and the crest of a light wave decreases?
A. The light becomes more violet
B. The light becomes dimmer
C. The light becomes brighter
D. The light becomes more red
Answer: answers B
Explanation: it gets dimmer becuase less light......
As it is observed the distance between the rest position and the crest of a light wave decreases, and the light becomes dimmer, therefore the correct answer is option B.
What is Wavelength?It can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.
C = λν
As given in the , it is observed the distance between the rest position and the crest of a light wave decreases,
The right response is option B since it can be seen that when the distance between the rest position and the crest of a light wave decreases, the light becomes dimmer.
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8. What was the major sticking point holding up progress in the Doha Round?
Answer:
opening up agricultural and industrial markets in various countries and how to cut rich nation farm subsidies
Explanation:
.
Circle the letter that corresponds to the best answer.
6. Our largest trade deficit is with______ . (LO8)
a) Japan b) CaNda c) ChiN d) Mexico
e) Germany
Answer:
C) China, or "Our largest trade deficit is with China"
Explanation:
China is currently our largest goods trading partner. 85% of goods are imported from China to America. The most prominent goods among the finished products exported from China were consumer electronics, data processing technologies, clothing, other textiles, optical gear, and medical equipment.
Genetic variation can occur amongst siblings since:
PLEASE HELP ME 2 more questions
Answer:
d: each offspring inherts a unique combination of genes from both parents.
Explanation:
In a group of Channel catfish, some individuals have a brown body and others have a white
body. In this group, the gene for the body color trait has two alleles. The allele B is for a
brown body, and the allele b is for a white body.
A certain Channel catfish from this group has a brown body. This catfish has one allele for a
brown body and one allele for a white body.
Based on this information, what is this Channel catfish's genotype for the body color gene?
a brown body
Bb
bb
a white body
Answer:
Bb
Explanation:
If the fish is brown, it had the dominant genotype.
Vocabulary
In your own words, define the following terms.
1. radiation___________
Answer:
Radiation is made up of chemicals and toxins, which can prove harmful to a human being.
8. Why might ChiN want to keep the price of the yuan low? Who suffers from this policy?
Answer:
Experts claim that China is artificially keeping the Yuan low in order to get an unfair trade advantage.
Explanation:
Which is an example of potential energy?
A burning candle.
Visible light waves from the sun.
A rubber band pulled tight.
A car coasting down a steep incline.
Answer:
A rubber band pulled tightly
Explanation:
Pulling the rubber back builds up tention inside it and when let go the potential energy is converted to kinetic energy and shoots forward.
12. Explain why domestic producers who supply a good that competes with imports would prefer an import-substitution approach to trade policy rather than an export-promotion approach. Which policy would domestic consumers prefer and why?
Answer:
Explanation:
you didnt answer my question so ya i am in 6 grade i dont now that sorry
Which wave has highest energy?
1) A high amplitude, high-wavelength wave.
2) A low amplitude, low-wavelength wave.
3) A low amplitude, high-wavelength wave.
4) A high amplitude, low-wavelength wave.
Answer:
2) A low amplitude, low-wavelength wave
8. Why would ChiN want its own currency to be undervalued relative to the U.S. dollar? How does ChiN maintain an undervalued currency?
Answer:
The Chinese government wish to keep the currency undervalued because: A weaker exchange rate makes exports more competitive and increases demand for Chinese exports. Chinese economic growth is dependent on exports, so the value of the currency plays a key role in boosting growth.
Explanation:
7. Is a stronger dollar good or bad for America? Explain.
Answer:
A strong dollar is good for some and relatively bad for others.
Explanation:
With the dollar strengthening over the past year, American consumers have benefited from cheaper imports and less expensive foreign travel. At the same time, American companies that export or rely on global markets for the bulk of sales have been hurt.
Use the following scenario to answer the question.
The desk for Caron’s new office weighs 500 Newtons. What would be the impact of an applied force that pushes from below at 475 Newtons?
(1 point)
The desk would move upward.
The desk would move forward.
The desk would change directions.
The desk would stay where it is.
Answer:
The desk would move upwards.
Explanation:
Jesse created a table classifying different resources, but he made a mistake. Which statement describes why the table is incorrect?
Renewable Resources |Nonrenewable Resources
-------------------------------------------------------------------------
Sunlight |Coal
Wind |Oil
Cotton | Water
1. Wind is a nonrenewable resource.
2. Nonrenewable resources are found in the core of the Earth.
3. Sunlight is a nonrenewable resource as there is only one sun.
4. Water is a renewable resource.
Answer:
I think the answer is number 4
8. Why is sustaiNbility such an important goal for conservation biologists?
Answer:
One goal of conservation biology is to preserve as many species as possible. Sustainable approaches that maintain the quality of habitats are required for the long-term survival of organisms.
Explanation:
hope it helpsss