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

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!

If high tide occurs at 6:00 am, when will the next high tide occur?

Answers

High tides occur 12 hours and 2 minutes apart do it would be at 6:25 pm
At 6:25 tell me if you need an explanation

. Which statement describes the difference between an independent and dependent variable? a. The dependent variable changes based on the independent variable.
b. The dependent variable is the control, and the independent variable is the result.
c. The dependent variable does not change, and the independent variable does change.
d. The independent variable does not change, and the dependent variable does not change.

Answers

Answer:

A

Explanation:

The independent variable only changes when whoever is conducting the experiment changes it, When it does change, it changes the dependent variable

The answer is A i had a question very similar to this

Identical rock types, identical fossils, and very similar mountain ranges are found on different continents that are separated by a wide ocean. Which of these best explains these observations?
A. Organisms traveled between these continents on land bridges.
B. The same forces erode mountains in different locations.
C. These continents were joined together at one time in the past.
D. Some rock types are very common and are found everywhere.

Answers

Answer:

These continents were joined together at one time in the past.

Explanation:

Identical rock types, identical fossils, and very similar mountain ranges are found on different continents that are separated by a wide ocean. Which of these BEST explains these observations?

these continents were joined together at one time in the past

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.

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

Above is a list of organisms found in a forest ecosystem. Which of the following groups of organisms are considered decomposers?
A) grass, acorn, moss
B) snake, mushroom, moss
C) bacteria, mushroom, fungus
D) vulture, mushroom, fungus
PLEASE HELP!

Answers

Answer: C, bacteria, mushroom, and fungus

Explanation:

These are all classified decomposers located within a forest ecosystem.

it is c) bacteria, mushroom, fungus

1.Where do the genes that determine an individual's traits come from?

, An individual can be born with any genes, since genes are random.

B.Individuals grow genes specific to their environment.

C.Parents pass their genes down to their offspring.

D.Parents choose which genes their offspring have when each individual is born


2.How do genes determine an individual's traits
A.Genes directly lead to traits
B.Genes are random and don't lead to traits
C.Genes give organisms the ability to change their traits
D.Genes are instructions for making protein molecules and protein molecules determine traits

Answers

Answer:

1. C

2. D

Explanation:

Parents pass down genes to there kids. They can pass down certain ones, like a gene for red hair.

Not every gene you get is instantly going to happen, if you get one brown hair gene and one red hair gene, you are going to have brown hair since it is a dominant trait.

Answer:

1)  C. Parents pass their genes down to their offspring.

2)  A. Genes directly lead to traits

For 2, it could be D but I think it is describing DNA.

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

A science teacher is planning a science lab in which students will identify conditions that do and do not speed up the time required for sugar to dissolve in water. Which of the following conditions will NOT have an effect on the dissolving time?
PLEASE GIVE ME THE RIGHT ANSWER FAST!!!
B. Grinding the sugar
D. Magnetizing the sugar
E. Heating the water
F. stirring the water

Answers

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Answer:

Your answer is B. Grinding the sugar

Hope this helps! :)

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

#SPJ3

(a) What are three ways in which the atmosphere is important to life on Earth? (b) How would the amount of carbon dioxide in the atmosphere change if there were no plants? (c) How would earth be different without the atmosphere?

Answers

Answer:

How is the character Batnik in “Too Fast” similar to Pitys in "Pan: God of the Wild"?

Both defy orders from their fathers.

Both die due to the jealousy of a god.

Both are enchanted by the skills of another.

Both are lured to their deaths by music.

Explanation:

Bones, lungs, and the liver are the most common places for cancer cells to spread, or "metastasize." Once in the bone, these cancer cells can form new metastatic tumors.

...

Bone metastasis is more likely with cancers such as:

Breast.Prostate.Lung.Kidney.Thyroid.

What is the chemical formula fructose

Answers

the chemical formula of fructose is C6H12O6

Please help!!!!!!!!! Which word goes here and means composed of one element??!!

Answers

Answer:

Pure-Substance

Explanation:

Answer:

Pure-Substance

Explanation:

I'm just answering so you can give the other person Brainlyest.

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

someone help no links ty

Answers

Answer:

The force of gravity on an object is called weight

Explanation:

the answer is weight

What is the force called that is applied to an object and it's NOT opposite and/or equal?

Answers

i think the answer would be velocity.

Answer:

velocity

Explanation:

I am a gas. I am in the noble gas family and row 1. I have only 2 valence electrons I glow red-orange when in an electric field. I can also be found in the sun. Who am I?

Answers

Answer:

the elements its helium

Explanation:

ithink its help

On a summer's day, beach sand will feel, and be, much hotter than the adjacent water due to the sand's lower thermal conductivity.
true or false?
T-T

Answers

Answer:

true. good luck, you need it!

Explanation:

The answer to the question is true

Create a time that marks important events during the Precambrian Supereon.

Answers

i really hope this help!!
Multiple Answers:

The earth started cooling and the outer edge of the planet solidified from molten lava to a solid crust. Water rained from the atmosphere and created oceans. The first form of life on our planet was created during the Archean eon in these oceans.

How can wind and water change the materials on earth's surface? (Specifically, rocks/the geophere) ​

Answers

When mechanical and chemical weathering breaks up materials on the Earth's surface, erosion can move them to new locations. For example, wind, water or ice can create a valley by removing material. ... When layers of eroded material pile up, it's called deposition. This can create new landforms.

Which best explains how a single-celled organism can survive without other cells?

Answers

Answer:

They are able to perform all necessary functions within one cell.

Explanation:

They do not need to perform more than one function to survive. They are able to perform all necessary functions within one cell. They are able to perform all necessary functions within one cell.

Please help. (science question)

Answers

Answer:water  erodes the earth by passing over rock and thinngs many times, as in a river, the water slowly washes away the rock turning it into sediment or silt.

Explanation:

Answer:Hope this helps :) if so pleas could you mark brainliest:) enjoy!

Explanation:

The cycle of water erosion has been here since forever thanks to the rain rivers, ponds lakes, the sea and the ocean because it first starts off with the rain then the rain fills up the lakes and pond and start rivers and the rivers lead to the sea and ocean and from there the water evaperates then it rains again and the lakes and ponds help with the evaporation.

The local newspaper has published the passage below.

Last week, scientists released incredible images of aurora australis, known as the northern lights, as seen from the Hubble telescope. The Hubble telescope was placed in orbit in 1990 by the space shuttle and has since delivered the sharpest images we have of our planet, our galaxy, and the universe. The images delivered last week show the beautiful display of lights in the southern hemisphere. These lights are the result of the solar activity known as solar wind. Traces of solar wind reach well beyond Earth and have been detected as far as Saturn.

Which statement in the news passage above is inaccurate?

The aurora australis cannot be seen from space.
The Hubble telescope does not orbit our planet.
The aurora australis is known as the northern lights.
Solar winds do not reach well beyond our planet.

Answers

Answer:

Solar winds do not reach well beyond our planet

Explanation:

I hope this helps :)

Solar winds do not reach well beyond our planet.because Traces of solar wind reach well beyond Earth and have been detected as far as Saturn. says that

A scientist is investigating which type of medicine would dissolve faster, a solid pill or a scoop of powder. Which hypothesis should the scientist develop given prior knowledge about surface area?
A.
Powders have more surface area and will dissolve faster.

B.
Solid pills have less surface area and will not dissolve.

C.
Solid pills have more surface area and will take longer to dissolve.

D.
Powders have less surface area and will dissolve faster.

Answers

Answer:

A.

Powders have more surface area and will dissolve faster.

Explanation:

please mark this answer as brainlest

The solute-like solids can dissolve in the solvent through the dissolution process. Powders have more surface area that permits more dissolution.

What is surface area?

The surface area is the amount of space covered or occupied by an object. It is directly dependent on the solubility and increases with an increase in the solubility.

The surface area of the powder is more compared to the solid pill and hence, the solubility of the scoop of powder is more than the pill.

Therefore, powder dissolves faster because option A. has more surface area.

Learn more about the surface area here:

https://brainly.com/question/22913609

Which two organisms share the least number of derived characteristics?

Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee

Answers

Shark and champanzee

Answer:shark And chimpanzee

Explanation:

Both of them are less Similar than the others because the others live on land in sharks live in water and most of their characteristics are very different

What is sexual selection? *
A. How being male or female affects how a species evolves
B. The behaviors an animal must display in order to find a mate
C. How the attractiveness of a mate can change the traits of your species

Answers

Answer:

B: The behaviors an animal must display in order to find a mate

Explanation:

An animal usually looks for specific characteristic in order for their offspring to develop those same characteristics and be able to survive

Use the what you learned area to fill in the blanks.

Answers

Answer:

1. cardiac muscle .

2. skeletal muscle .

3. smooth muscle .

4. your heart .

5. bones .

6. stomach .

7. muscle fibers .

8. non-striated muscle .

9. cardiac muscle tissue is only found in your heart .

10. exercising, getting enough rest, and eating a balanced diet will help to keep your muscles healthy for life .

11. wrong diet , consume fewer calories and eat a lower percentage of foods that are high in proteins and carbohydrates , weight training , if you're continuing to train with weights, use lighter weights and reduce weight training frequency to no more than 2 times per week to maintain tone , cardio , not warming up etc .

Explanation:

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

In a few sentences, describe what this weather map tells you about the weather.

Answers

Answer:

You can download the answer here

Explanation:

This weather map tells you that where the L is it will be colder. Where the H is it tells you that it will be hotter.
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