Un objeto posee una energía cinética de 300J, este mismo se ubica a 4m de altura y su masa corresponde a 10Kg. ¿Cuál es su energía mecánica?

Answers

Answer 1

Answer: 692 J

Explanation:

La energía mecánica es la energía que se utiliza para realizar un trabajo determinado y se calcula con la suma de la energía cinética y la energía potencial de un objeto. En otras palabras, describe la energía de un objeto debido a su movimiento, posición, o ambos.

La energía cinética es el trabajo necesario para acelerar un cuerpo desde el reposo hasta su velocidad final. Entonces, es la energía que posee un cuerpo debido a su movimiento. Cuando gana energía durante la aceleración, el cuerpo mantiene la energía cinética a menos que su velocidad cambie, y el cuerpo realiza la misma cantidad de trabajo al desacelerar desde su velocidad actual hasta un estado de reposo. Por otro lado, la energía potencial es la energía que posee un objeto debido a su posición con respecto a otros objetos. Los tipos más comunes de energía potencial incluyen a la energía potencial gravitacional de un objeto que depende de su distancia al centro de masa de otro objeto (La Tierra), la energía potencial elástica de un muelle o resorte extendido y la energía potencial eléctrica de una carga en un campo eléctrico.

La unidad de energía en el Sistema Internacional de Unidades (SI) es el julio, que tiene el símbolo J.

La energía mecánica se calcula de la siguiente manera (tener en cuenta que la aceleración de la gravedad es un dato tabulado de 9,8m/s^2):

Energía mecánica = Energía cinética + Energía potencial

Energía mecánica = (1/2 * masa * velocidad^2) + (masa * gravedad * altura)

Energía mecánica = 300 J + (10kg * 9,8m/s^2 * 4m)

Energía mecánica  = 300 J + 392 J = 692 J


Related Questions

Which of the following is lost to the environment as heat so that it cannot be continually recycled?
Group of answer choices

oxygen

nitrogen

phosphorous

energy

Answers

Answer:

Energy

Explanation:

Many chemical reactions release energy in the form of heat, light, or sound. These are exothermic reactions. Exothermic reactions may occur spontaneously and result in higher randomness or entropy (ΔS > 0) of the system. They are denoted by a negative heat flow (heat is lost to the surroundings) and decrease in enthalpy (ΔH < 0). In the lab, exothermic reactions produce heat or may even be explosive.

Explain how nitrate ions help plants to grow.

Answers

Answer:

Explanation:

Both nitrate ions and ammonium ions can be taken up by plants (some prefer one to the other). These ions provide nitrogen for the plant to make its own amino acids for protein synthesis. Except in very high nitrogen soils, the addition of extra nitrate will stimulate plant growth.

Nitrogen is an essential macronutrient that is a component of many essential molecules, such as amino acids, proteins, nucleic acids, and chlorophyll.

What are the roles of nitrate in the growth of plants?

Nitrate ions are essential nutrients for plant growth and development. Nitrogen is the fourth most abundant element in plants and is crucial for the growth of leaves, stems, and roots.

Plants require nitrogen in the form of nitrate because it is the most oxidized. It is an easily available form of nitrogen for plants to take up from the soil. Nitrate is absorbed by plants through their roots and transported to the plant cells, where it is used to synthesize amino acids, proteins, and other essential molecules.

Nitrate plays a crucial role in the process of photosynthesis, which is the process by which plants convert sunlight into energy.

Learn more about nitrate ions, here:

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Internal adaptations only apply to animals. Plants do not have internal adaptations.
true or false
pls help

Answers

False

Explanation:

I know and i am in 11th grade

What landform will this erupting volcano make? A) a delta B) a valley C) a canyon D) a mountain

Answers

The answer is D I believe

Carbon that is stored for millions of years is found in the form of

Answers

Answer: They can be found in Fossil Fuels

Explanation:

When animals die, they release carbon which goes into the ground and when it's stored for so long it turns into fossil fuels :)

Answer:

most is stored in rocks the rest is ocean plants soil atmosphere and fossil fuels.

Explanation:

In an if/then statement, what is the "then” part called?
a. hypothetical proposition
c. consequent
b. antecedent
d. inference

Answers

A. a hypothetical proposition
Answer:

A

Explanation:

It’s what the other guy said

How many bonds does oxygen have?

Answers

Answer:

2

Explanation:

duhhhhhhhhhhhhhhhhh

HELP PAST DUE AND NO WEBISTES/ FAKE LINKS

your own words: how does the temperture affect the denisty of the water? DO NOT COPY AND PASTE FROM THE INTERNET OR YOUR REPORTED!

Answers

Answer:

When a certain amount of water is heated up, it expands, increasing in volume changing the density. This goes for when it’s heated or cooled; the density then changes.

The atmosphere of Earth is made up of nitrogen, oxygen, water vapor, carbon dioxide, methane, nitrous
oxide, and ozone. Of these, 99% of the atmosphere is composed of:

Answers

Answer:

Nitrogen and oxygen account for 99 percent of the gases in dry air,

Match the position to the closest estimation of its current career outlook.
agricultural engineer
landscape architect
agricultural managers
loss of more than 5 percent
:: growth of more than 15 percent
growth of less than 10 percent

Answers

Answer:

can you rephrase your question im not understaind it, if you can i can answer it for you

Explanation:

fossils of marine organisms hi in the Andes mountains lead Darwin to conclude that???

Answers

Answer:

its C

Explanation:

the answer is c, great geologic change can happen over long periods of time

Two cell organelles are described below.

Organelle A: Present in plant cells but not present in animal cells
Organelle B: Much larger in size in plant cells than in animal cells

Which of the following is most likely correct?

Organelle A is vacuole, Organelle B is chloroplast
Organelle A is chloroplast, Organelle B is vacuole
Organelle A is nucleus, Organelle B is mitochondria
Organelle A is mitochondria, Organelle B is nucleus

Answers

[tex] \huge{ \mathfrak{  \underline{ Answer} \:  \:  ✓ }}[/tex]

Correct option - B

Two two organelles are :

Organelle A - Chloroplast Organelle B - vacuoles

Because, Chloroplasts are the special organelles present in only plant cells. and vacuoles are smaller in size in animal cells as compared to the plant cells.

_____________________________

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Answer:

B-)Organelle A is chloroplast, Organelle B is vacuole

Explanation:

hello please help i’ll give brainliest

Answers

Atmosphere is the correct answer!

Answer: Atmosphere

Explanation: It isthe envelope of gases surrounding the earth and protect it

Research on animals is not relevant to people because animals are different from people.

A. True
B. False

Answers

The answer is FALSE.
A.) True


The pain , the suffering, and deaths of animals are not worth the possible human benefits.

What type of sex chromosome will be contained by the sex cells of a female giraffe?
A. X chromosome
B. Y chromosome
C. X and Y chromosome ​

Answers

Explanation:

The type of sex chromosome will be contained by the sex cells of a female giraffe is X chromosome.

Give brainliest please..

GIVING AWAY 14 POINTS PLEASE HELP ME ON THIS QUESTION ASAP!!!!

Answers

Answer: i think its B or C

Answer: B

Explanation: Hope this help :D

all plant bodies(root,stem and leaf) are externally covered by epidermis but why woody plant is covered by barks​

Answers

Answer:

Bark comprises all the tissues surrounding the xylem in woody plants. Broadly, bark includes an inner and mostly living region and an outer, dead one. Of all plant structures, bark has the most complex anatomical structure and ontogenetic origin involving two (and often three) different meristems.

As to why, the bark adds layers to the inside ring of the vascular cambium, the outside is pushed outward. The cells die off, and the fibrous matrix of cellulose and lignin molecules remain. This hard structure forms the bark, and protects the tree or plant from many forms of damage.

Before a plant grown in a greenhouse can be planted in a field or garden, it should first be________ off.

Fill in the blank.
Please say the right answer.

Answers

Answer:

hardening off

Explanation:

Explain why index fossils are important.

Answers

Answer:

Index fossils are used by geologists and palaeontologists as significant aids to determine the correlation and age of rock formations. Geologists use large fossils or macrofossils and microscopic fossils or microfossils as indices to define and identify geologic periods.

Explanation:

Our environment is sometimes divided into different spheres, including the geosphere, hydrosphere, cryosphere, atmosphere, and biosphere. Interactions between the geosphere and atmosphere can have an impact on Earth’s weather. Which of the following is an example of an interaction between the geosphere and atmosphere?




1.Melting of ice from a glacier into a body of water


2.Eruption of lava, gases, and ash from a volcano


3.Evaporation of water from the ocean


4.Animals completing cell respiration and exhaling CO2

Answers

Answer:

Eruption of lava, gases, and ash from a volcano

Explanation:

The nervous system is the major ______ system of the body.
A. output
B. control
C. transport
D. protective

Answers

Answer:

B. Control

Explanation:

control system of the body

Please help asap , I’m very confused .

Answers

50% or 2:4.

Explanation

lungs and capillaries both have porous linings that allow certain substances to move into or out of the structures. Which function do these porous linings most likely serve in living organisms?
A. heat release
B. gas exchange
C. carbohydrate absorption
D. osmotic pressure regulation

Answers

Answer:

B. Gas exchange

Explanation:

because the lungs bring air into your body, it needs a way to transfer the oxygen into your blood stream.

Luckily for us, our lungs have porous linings, which will help the oxygen go directly into our blood stream.

The porous structure of the  blood capillaries and lung tissue allow the them to exchange gas

The porous structure of the lungs allow to exchange gas from the gas in the blood. Blood capillaries are tiny blood vessels in the body.

The gas in the blood was collected from the tissue from the body parts which is made possible because of the porous lining of the blood capillaries.

Therefore, the porous structure of the  blood capillaries and lung tissue allow the them to exchange gas.

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Some cells have structures called chloroplasts, which contain the green pigment chlorophyll.

a) Explain the role of chloroplasts in these cells.

b) Name two things from the environment that chloroplasts must have to perform this
role.

Answers

Answer:

Chloroplasts convert light energy to chemical energy to supply food to the plant through a process called photosynthesis

Water and Sunlight

The crust is the thickest layer of the earth true or false​

Answers

Answer:

The crust is not the thickest layer of earth

:)

Answer:

No

Explanation:

The core is the thickest layer of the earth! Which the crust is relatively thin compared to the other layers

Which of the following groups of people be the least affected by air pollution?

Answers

Answer:

The group which would be the least affected by air pollution are C. teenagers. This is because their respiratory systems have already been established and are quite strong because they are still young and healthy. People with asthma already have troubles breathing, so obviously air pollution is going to be a problem.

Explanation:

Hope it helps :)

T/F we make synthetic materials to serve different purposes that meet our wants and needs

Answers

it is true that we make synthetic materials

write the difference between Picture Plant, mushroom and dodder on the basis of stem, leaf and water requirement.
Pls answer in paragraph.
Who will answer will be marked as brainlist.
Pls answer.
Required urgently.
Regards. ​

Answers

Answer:

Explanation:

A exchange of gases between the leaf and the atmosphere

Bloss of water vapour from the leaves and stems of a plant

С

movement of water from the roots to the leaves

D

movement of water through the cells of the leaf

hope this helped if not sorry i tried



____is the amount of matter in an object and is measured in kilograms.
A. Mass
B. Gravity
C. Newton
D. Weight

Answers

Answer is d hope this helps

50 points welp
Mums are plants that bloom in the fall.

Which statement describes the photoperiodism of mums?

They bloom when the days are longer.
They bloom when the nights are longer.
They bloom when the temperatures are warmer.
They bloom when the temperatures are colder.

Answers

Answer:

They bloom when the nights are longer.

Answer:

2. They bloom when the nights are longer

Explanation:

Photoperiodism means the reaction to length of a day or night cycle, since fall is the beginning of shorter days and longer nights, it is only reasonable that the answer is that They bloom when the nights are longer.

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