A student uses a lever and fulcrum to lift a rock off the ground.
Which option describes when potential energy is converted into kinetic energy during this process?


a. when the lever is wedged beneath the rock but before it has been lifted

b. when the student presses down on one side of the lever to cause it to move

c. when the rock rests on the ground without the lever

d. when the rock rests above the ground

Answers

Answer 1
it has to me b because it shows what they did in this part
Answer 2
I think it’s b hope this helps

Related Questions

Consider the two models seen here. These models represent two different minerals. Each is composed of a lattice of carbon atoms. How do these crystals differ?

A) The two have different chemical formulas. Eliminate

B) The diamond model represents a crystal while the graphite represents a molecule.

C) Both are crystals, but the organized arrangement of the carbon atoms in each differs.

D) The graphite crystal is not pure: that is, it contains two elements while the diamond crystal is composed of carbon atoms only.

Answers

It is c correct hope this helps 792 explanation

Answer:

hi mama rusty thank you for your correct email address for the title company hunk you a picture of the following statements about you and I will be there at work and

Explanation:

l hope I can help you

PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....BUT U MUST TYPE EVERYTHING
all I need you to do its to type out these pictures word for word it pretty simple

Answers

Answer:

Threatened Species: A threatened species is a species at risk but not yet endangered. California sea otters were classififed as a threatened species. Laws were passed to protect the otters and now they have increased their population size.

Invasive Species: One of the main causes of extinction and endangered species is the introduction of an exotic species. New exotic species are called invasive species. Invasive species can disrupt food chains, carry disease, prey on native species directly, and out-compete native species for limited resources, like food.

Extinction: If a population decreases too much in numbers, they disappear. Extinct species mean that the species has died out and no individuals left. An example of extinction: New Zealand was once home to a bird called the Giant Moa. Humans settled as their population increased the Moa population decreased. The species is now extinct.

Explanation:

Adjustment to environmental conditions is known as
A. Adaptation
B. Darwinism
C. Evolution
D. Natural Selection

Answers

Answer:

A.

Explanation:

Adjust = Adapt if that makes sense.

It’s A Let me know if you want an explanation!

The main function of the respiratory system is to –


A. filter body fluids to remove waste products from the bloodstream.


B. send signals in the form of hormones to the body to control growth, reproduction, and metabolism.


C. rapidly communicate specific information using electrical impulses.


D. exchange gases, mostly carbon dioxide and oxygen, between the body and the atmosphere.

Answers

The answer is d I believe
The answer is D. Exchange gases, mostly carbon dioxide and oxygen, between the body and atmosphere!

Short Question: What is Hydropower?

Answers

The use of flowing water to power a turbine to produce electrical energy

Answer:

Hydropower is energy in moving water.

Explanation:

Can yall help w these. Please no links/spam

Answers

Answer:

sun

chloroplasts absorb

sugar light

plants phytoplanktin

Explanation:

Answer:

1. Sun

2. Chloroplasts, absorb

3.  sugar, light

4. plants, animals

Explanation:

Hope that helps

Which of the following has the greatest influence on the size and force of waves?
A.
seasons
B.
Moon’s gravity
C.
wind speed
D.
Earth’s gravity

Answers

wind speed bc The faster the wind, the longer it blows, or the farther it can blow uninterrupted, the bigger the waves.
c. wind speeds


i need 20 soooo

What is a biodiversity hotspot (definition)? Explain

Answers

Answer:

A biodiversity hotspot is a biogeographic region with significant levels of biodiversity that is threatened by human habitation.

Explanation:

A Biodiversity Hotspot is an area containing a huge number of species, a large percentage of which are endemic.

Explain the flow of energy in the food chain and why stored energy is an important concept of it.

Answers

Answer:

"The process of transfer of energy to various trophic level of food chain is known as flow of energy. Energy flow in ecosystem from energy source to autotrophs to heterotrophs."

Explanation:

The energy flow from the primary members, plants  to the other level of organism in food chain. Storage of energy is very important because, the stored energy in plants are distributing to all other levels in food chain and utilizing for activities.

What is energy distribution in food chain ?

The sun is the main source of energy for practically all ecosystems on earth. Energy moves from one trophic level of the food chain, to the next as primary producers take energy from the sun to make their own food in the form of glucose.

Primary producers are then consumed by primary consumers, who are in turn eaten by secondary consumers, and so on. The sun is the main source of energy for practically all ecosystems on earth.

Energy moves from one trophic level, or level of the food chain, to the next as primary producers take energy from the sun to make their own food in the form of glucose. Only 10% of energy is distributed to the other level and 90% are lost to the surroundings.

Find more on food chain:

https://brainly.com/question/16065961

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what is the function of tunnels and passageways in subsurface mining?
a. to reach mineral ore deep below the surface of the earth
b. to reach mineral ores on the surface of the earth
c. to drain underground lakes where minerals are found
d. to create strip mines and quarries below the surface of the earth

Answers

The answer is D because they would have to make quarries just below the surface to mine
Mineral ores much quicker (Quarries- a large hole/pit under ground used to get stone and minerals)

The function of tunnels and passageways in subsurface mining to drain underground lakes where minerals are found. option C is correct.

What is subsurface mining?

Subsurface mining is the process in which  mineral ores are too deep to extract at with this  mining techniques, subsurface mining methods are used .

An advantage and good thing  of subsurface mining is that it will not disturb land than surface mining it only disturbs less than one-tenth the surface amount of land as surface mining and the method.

Therefore, the function of tunnels and passageways in subsurface mining to drain underground lakes where minerals are found. option C is correct.

Learn more about subsurface mining, here:

https://brainly.com/question/1506599

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I REALLY NEED HELP QUICKLY!!

Answers

Answer:

i think the answer is c

Explanation:

C) All of earth was once filled with water or ice

PLeAse hELP
Write a paragraph (5-8 complete sentences) using the prompt below:
An ecosystem has many living and nonliving things. Choose one producer, one consumer, and one decomposer. Explain how they work together.

Answers

Answer:

The producer is a plant. It produces vegetables and fruits for the consumer to eat. The consumer is an human. It eats the fruits and vegetables that came from the plant. Lastly the decomposer would be for example fungi. It breaks down dead plants and tree trunks. It helps the producer produce and the consumer comsume.

What did you observe happening in the cups?

Did a phase change or phase changes occur? If so, which one or ones?

Answers

I think it gets foggy in the cup i think but good luck!!
a phase change will occur , it will first become blurry due to water vapour evaporating and cool down to tiny water droplets when coming in contact with the plastic cup ( hope im right , its been awhile! )

sience question ....

Answers

Answer:

extended structure

Explanation:

Answer:

I think it is the third one too

Explanation:

Please help me with these science questions

Answers

Answer: The wind erodes the earth by moving pieces of it every which way.

Explanation:

Every patch of air carries hundreds of thousands pieces of dirt sand and chunks of earth. When the wind changes course it will slowly pick up more and more and until an indent will form. This is also how sand dunes are made.

Answer:

If the wind constantly pushes a rock, eventually the sides will start eroding, and the wind will cause it to break and erode.

The blowing wind constantly changes the earths surface by moving rocks, and breaking them.

by the wind constantly pushing sand on top of each other in one place.

Explanation:

I´ll mark branlist for the best answer!!!
Write a paragraph (5-8 complete sentences) answering the prompt"How does the availability of resources in ecosystems impact ecosystems?"

Answers

5-8 Sentences on: "How Does The Availability Of Resources In Ecosystems Impact Ecosystems?"

Changing out natural resources in our environment can affect the whole entire ecosystem.  Ecosystems can change throughout time but the change may or may not affect the ecosystems.  But according to research, if the change is too fast the whole ecosystem can be destroyed.  An imbalanced or damaged ecosystem can lead to problems.  Certain resources play an important role such as sunlight and water, we need resources to survive and can also help living creatures.  These resources impact animals, plants, and insects/bugs.

P.S If you need more sentences I will edit my answer!

           Hope this helps!

      ~Hocus Pocus

In the process of precipitation, liquid water changes into water vapor and enters the atmosphere.
True or False?
:p

Answers

Answer:

true

Explanation:

Very true:)! Why does the sentence have to be so long

What is the chemical formula fructose

Answers

the chemical formula of fructose is C6H12O6

Use the following diagram to answer the question.
What part of the respiratory system is labeled 4?

1 lung
2 diaphragm
3 nasal cavity
4 trachea

Answers

The answer is a lol your welcome
ANSWER : 1 lung

EXPLANATION :

PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....
all I need you to do its to type out these pictures word for word it pretty simple

Answers

Resources affect populations
Living and nonliving things are both found within the same ecosystem. The living things require the non living things for survival.

Limiting Factors
Environmental factors, such as the amount of water, food, sunlight and temperature available, are limiting factors for a population.

A limiting factor is sometimes that restricts the size of a population. Limiting factors might affect the number of individuals in the ecosystem can support.

The amount of space affects a population’s size.

Available water, food, sunlight and temperature are all limiting factors.

Space is also a limiting factor.

If there are too few resources, populations may migrate to new areas.

Answer:

- The amount of space affects a population's size.

- Available water, food, sunlight and temperature are limiting factors

- Space is also a limiting factor.

- If there are too few resources, populations may migrate to new areas.

Limiting

Factors

- Environmental factors, such as the amount of water, food, sunlight and temperature available, are limiting factors for a population.

- A limiting factor is something that restricts the size of a population. Limiting factors might affect the number of individuals in the ecosystem can support.

Resources affect

populations

Living and nonliving things are both found within the same ecosystem. the living things require the non living things for survival.

(Please take note I fixed some of the incorrect grammar in these images. Such as 2 spaces in-between, or this -> "Number of individuals ithe ecosystem")

~ LadyBrain

How would you label the molecules shown in the sample above? ( A is wrong )
a. Sample A is cooler. Sample B is hotter.
b. Sample A is hotter. Sample B is cooler.
c. Samples A and B are the same temperature.

Answers

sample a is hotter sample b is cooler
it is b, sample a is hotter because the balls are not stagnant as they are moving around in the picture

PLEASE HELP!!!! IT'S DUE TODAY!!!

Answers

Answer:

I think it might be C

Explanation:

Im not sure though

Please tell me if im wrong

I’m pretty sure the answer is B
Hope this helps

helppp this easyyyyyyyyyyyyyy

Answers

Answer:

Circulatory System -

Nervous System

Respiratory System

muscular system

PLEASE HELP ILL GIVE BRAINLIST AND POINTS (I don’t mind how long it needs to be)

Answers

Answer:

When two or more atoms chemically bond together, they form a molecule. When molecules are made from two or more different kinds of atoms, the substances are called compounds. If molecules are made from only one kind of atom, the substances are elements.

Explanation:

gave an explanation in my answer XD anyway hope I helped. Have a good day!

Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.

Please mark brainliest

ASAP LIKE RIGHT NOW PLEASE
Explain what happens to the amplitude of a wave when the energy to produce it is increased. in easy words

Answers

I think the amplitude of a wave increases when the energy increases. I hope that helps!

The equator is at a latitude of 0°. Which latitude will have the warmest temperature?

Answers

Answer:

There is a relationship between latitude and temperature around the world, as temperatures are typically warmer approaching the Equator and cooler approaching the Poles. There are variations, though, as other factors such as elevation, ocean currents, and precipitation affect climate patterns.

Explanation:

0 will have warmest

HELP IMPORTANT TEST!! Why must animals eat food but plants do not eat food? A: Plants do not appear to eat, but they do actually eat nutrients in the soil. Animals must eat to obtain food that they can't get from the soil. B:Plants make their own food through photosynthesis. Animals must eat because they cannot make their own food. C: Plants use photosynthesis to make their own food instead of eating. Animals eat plants because they like the taste of certain fruits. B: Plants make their own food through photosynthesis, so they do not eat. Animals eat because the energy they make themselves is enough to live but not grow. By eating, they can grow big and strong.

Answers

Answer:B

Explanation:The answer is B because plants use photosynthesis to make their own food while animals such as humans do not make their own food using the sun photosynthesis is using the suns Energy to produce your own food If you think about it humans are animals and do you use the suns energy to produce your own food no

The equator is at a latitude of 0°. Which latitude will have the warmest temperature?

A. 15°N

B. 20°S

C. 45°N

D. 70°S

Answers

Pretty sure it is 20
The answer is b 20

Hope this helps:)

How does weathering and erosion contribute to the cycling of earth's materials? (specifically rock/the geophere)​

Answers

Answer:

Erosion breaks rocks down further and then moves them.

I need help with these questions from 8th Grade science, Specifically Chemistry.
Answers should be detailed, 3-4 sentences.

List at least 3 different physical properties or changes of a substance.

List at least 3 different chemical properties or changes that a substance can experience.

EXPLAIN YOUR ANSWER! NO LINKS! PLEASE DON"T ANSWER JUST TO GET POINTS!
I will report your answer if you do any of those things.
Thx in advance!

Answers

Answer:

Physical properties of a substance can include color, temperature, and mass. These are physical properties because they can be measured without changing a substance's chemical identity. Chemical properties of a substance can include flammability, acidity, and reactivity. These are chemical properties because they can be measured only by changing a substance's chemical identity.

Other Questions
please answer this question correctly I beg you please only answer if you know the correct answer and please no no links please please please please I beg you I beg you answer this question if you know the answer correctly What is the third angle of a right triangle if one of the angles measures 42.6 genes for traits that help an organism be more successful reproductively can be expected to ... A - cause it to evolve into species B - eventually be eliminated by natural selection C - become more common in the future D- cause the extinction of the species The ratio of boys to girls in class is 4 : 5 What fraction of the class are boys Jazzmine took out a loan of $17,500 to buy a new car. She received a 3.5% interest rate compounded annually and paid $3,274.50 in interest. How long did it take Jazzmine to pay off the loan? In which of the following situations is there acceleration? (There may be more than one correct answer)a. A car is sitting at a stoplight. The light turns green and the car begins moving.b. A car maintains a speed of 10 mi/hr as it turns a corner.c. When a truck approaches a stop light, it begins to slow down.d. A car travels at 65 mi/hr. What is the slope of the line that passes through the points (3, -2) and (9, -2)?03-3undefined PLEASE!!! I'LL MARK BRAINLIESTT7. Draw the Syn-co-pa Rhythm 8. Draw an interval of a 5th9. Draw an interval of an Octave 10. Draw an Interval of a 3rd A and \angle BB are complementary angles. If m\angle A=(6x+22)^{\circ}A=(6x+22) and m\angle B=(7x+16)^{\circ}B=(7x+16) , then find the measure of \angle BB. The scatterplot shows the relationship between the percentage of battery life remaining in 12 smoke detectors and the number of months that the batteries have been in the smoke detectors.Based on the scatterplot, what is the best prediction of the number of months it would take for the battery in a smoke detector to have 20 percent battery life remaining?A-9 monthsB-7 months C-11 months D-6 months 4. Calculate the compound interest earned when $8 500 at 8% per year for:a. 3 yearsb. 8 months There are _ total possible outcomes. What is the author's main purpose in discussing the sweet liquor that Euanthes's son had given to Odysseus in lines 4160 of Book 9? PLEASE I NEED THIS NOW, AND EXPLICATION True or false. Supply and demand determines the price of labor paid for jobs earning more than minimum wage. The use of fossil fuels is a concern because it can lead to which of the following?O increased runoffO global warmingO polluted watersOeutrophication CAN ANYOJ HELP? THANKS Please help! If you do you will get 'Brainliest' Scientists once classified fungi as types of plants. Today, fungi are classified in their own kingdom. Which of thesetraits distinguishes fungi from plants?A Fungi have cell walls made of chitin and are heterotrophic.B Fungi grow in the ground and are photosynthetic. Fungi reproduce by asexual reproduction.D Fungi are prokaryotes. can i get some help with these 3 questions .