As máquinas tem como fonte de calor?
A)Um comburente
B)O gás carbônico
C)Uma Bateria
D)Um combustível.

Answers

Answer 1

Answer:

Hola,  tu respuesta es B. Gas Carbonico

Explanation:

Answer 2
I believe it B. I did the test

Related Questions

Answer this question please​

Answers

Answer:

Any animal that is not a equine, tapir, or rhino.

Explanation:

There are 3 extant families of odd toed ungulates:

Equidae (horses, donkeys, zebras etc)Rhinocerotidae (rhinoceroses) Tapiridae (tapirs).

If the animal isn't in one of those families, it isn't an odd toed ungulate.

When a bat is hibernating, how fast does its heart pump?

Answers

Answer:

20 beats per minute

Explanation:

Answer:20 beats

Explanation:bat's heart rate slows to only 20 heartbeats per minute.

Shondra takes notes in class.
Three entries in Shondra's notes are not in the right
place. What can Shondra do to correct her notes?
1. Energy
A Definition - the energy of moving objects
B. Main categories of energy
1. Kinetic - the ability to do work
2 Potential - the energy stored in objects
3. Chemical -- the energy in chemical bonds
C. Forms of energy
1. Gravitational - the energy of a rock on a hill
2 Elastic - the energy in a spring
3. Nuclear - the energy in the nuclei of atoms
4. Electromagnetic wave - the energy from the Sun
5. Electrical - the energy of flowing electrical charges
O Switch "the energy of moving objects" and "the
ability to do work" and place chemical energy under
"Forms of energy."
O Switch "the energy of flowing electrical charges" and
"the energy in a spring" and place kinetic energy
under "Forms of energy."
O Switch "the energy in the nuclei of atoms" and "the
energy stored in objects" and place nuclear energy
under "Main categories of energy."
O Switch "the energy from the Sun" and "the energy of
a rock on a hill" and place electrical energy under
"Main categories of energy."
Mark this and return
Save and Exit
Next
Submit

Answers

Answer:

I beileve its A because energy is what gives the ability to do work

Explanation:

Answer:

A

Explanation:

please have a great day.

Which event triggers the start of black hole formation?

Answers

Answer:

A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.

Explanation:

Answer:

1. The universe's galaxies have evolved since what point in time?

2. Which proportion of the universe's galaxies can be seen from Earth?

3. Which was used to create the first image of a black hole?

4. Which of these describes a nebula?

5. Why are most stars not destroyed in a galaxy collision?

6. What do supernova remnant and planetary nebulae have in common? Select the three correct answers.

7. Which of the following is an accurate description of cosmic microwave background (CMB) radiation? Select the two correct answers.

8. Select the correct answers from the list.

The model of galaxy formation in which sections of gas clouds collapse into small pieces which repeatedly combine into larger pieces under the influence of gravity is called the ____ model or the ____ model.

9. Drag and drop the words into the correct locations. Answers may be used once, more than once, or not at all.

Galaxies can be grouped by the age of the stars they tend to contain, with ____ galaxies having the youngest stars and ____ galaxies having the oldest stars.

10. Which event triggers the start of black hole formation?

Explanation:

1. 13.8 billion years ago, right after the universe first formed

2. far less than 1 percent

3. radio waves from matter at the edge of the black hole

4. cloud of gas and dust

5. Galaxies are mostly empty space.

6. They emit non-visible radiation.

They are composed of matter from dying stars.

They contribute matter to interstellar space.

7. CMB is uniformly distributed and of a uniform temperature across the universe.

CMB is remnant radiation from the Big Bang.

8. inside-out / bottom-up

9. irregular / elliptical

10. A massive star depletes its stores of hydrogen and helium

Which RNA base pairs with the adenine in DNA?
Thymine
guanine
cytosine
uracil

Answers

Thymine is ur answer for in DNA

Answer:

uracil

Explain: it pairs up with the dna

sal'jdhkblajshdbjkadsbjadsds

Answers

Answer:

Huh?? what did you say?

Explanation:

What two genes a person actually has in their DNA; i.e. DD, Dd, or dd
A.genotype
B.phenotype
C.dominant
D.recessive

Answers

A: genotype

Hope this helps:)

Which statement best describes how molecules interact with systems in the
human body
A. Carbon atoms combine with water to form the glucose molecules
that cells use to get the energy they need.
B. Oxygen molecules in the blood enter the cells of all body systems,
and the cells use them to get energy
C. Carbon dioxide molecules leave the body in exhaled air, and
oxygen molecules enter the body in inhaled air.
D. Oxygen molecules help carry other molecules in the blood as it
flows through the body.

Answers

Answer:

b

Explanation:

Which of the following is formed last in daughter cells when plant cells divide?

The nucleus
The nuclear envelope
The cell membrane
The cell wall

Answers

Answer:

The cell wall is formed last

Answer:

the nucleus is the last thing formed

explain how thermal pollution can impact on the quality of water biodiversity​

Answers

Answer: Biodiversity can be decreased as a result. High temperature limits oxygen dispersion into deeper waters, contributing to anaerobic conditions. This can lead to increased bacteria levels when there is ample food supply. Many aquatic species will fail to reproduce at elevated temperatures. I hope this helps :)
The primary effects of thermal pollution are direct thermal shock , changes in dissolved oxygen, and the redistribution of organisms in the local community. ... Cold water contains more oxygen than hot water so increases in temperature also decrease the oxygen-carrying capacity of water.

One of the 7th graders in our school believes that absolute zero is possible on very cold days when it is snowing outside. Is he correct?​

Answers

Answer: It depends on where u live it can go to the negatives and could be at 0 at some point

Explanation:

which player will generate the most FORCE??!!!

Answers

Answer:

Nick Boyle as 270 pounds is higher than others!

Explanation:

Answer:

Logan Thomas

Explanation:

which statement regarding these methods of reproduction is correct?

Answers

Answer:

put the picture of the question

Explanation:

i cant help you if you dont

What happens to a population when immigration increases?
A. The population size usually increases.
B. The emigration rate usually increases.
O C. The emigration rate usually decreases.
O D. The population size usually decreases.

Answers

Answer:d

Explanation:

When immigration increases, the population size usually increases, as shown in Option A, as immigration is the movement of individuals into a population from another population.

What is immigration?

Immigration is the movement of individuals from one population to another. It involves the addition of new individuals to the population, which can increase its size. When more individuals enter a population, they bring with them new genes and genetic diversity, which can enhance the adaptive potential of the population. This can help the population better withstand environmental challenges and increase their chances of survival, but increased immigration can also have negative consequences. For example, it can lead to competition for resources among individuals, which can lead to a decrease in the quality and availability of resources for the population as a whole.

Hence, when immigration increases, the population size usually increases, as shown in Option A.

Learn more about immigration here.

https://brainly.com/question/7489579

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Black-footed ferrets are native to the Great Plains. They spend most of their
time underground in prairie dog burrows. Which factor would increase an
area's carrying capacity for black-footed ferrets?
A. Increased competition for space
B. Increased number of diseases
C. Increased number of predators
D. Increased availability of food

Answers

Answer:

D. Increased availability of food

Explanation:

Trust

The factor that would increase an area's carrying capacity for black-footed ferrets is the increased availability of food. The correct option is D.

What is carrying capacity?

Carrying capacity is defined as the average population size of a species in a given habitat.

Environmental factors such as adequate food, shelter, water, and mates limit the species population size. If these requirements are not met, the population will decline until the resources recover.

If there is more food available in an area, more black-footed ferrets can survive and reproduce, increasing the species' carrying capacity.

Increased competition for space, more diseases, and more predators would all reduce the carrying capacity of black-footed ferrets by reducing the number of individuals that could survive and reproduce in the area.

Thus, the correct option is D.

For more details regarding carrying capacity, visit:

https://brainly.com/question/30880725

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The oxidation of a chemical occurs when

It loses electrons
It gains electrons
It shares electrons
All the above

Answers

Answer:

Oxidation occurs when an atom, molecule, or ion loses one or more electrons in a chemical reaction. When oxidation occurs, the oxidation state of the chemical species increases.

Explanation:

oxidation is loss of electrons

here a trick to remember this

oil rig -> oxidation is loss. reduction is gain

difference between trychocysts and nematocysts​

Answers

Answer:

trichocyst is a threadlike organ in certain protozoans that can be discharged suddenly in order to grasp or sting while nematocyst is (biology) a capsule, in certain cnidarians, containing a barbed, threadlike tube that delivers a paralyzing sting.

Explanation:

Calculate: Punnett squares can be used to predict probable outcomes of genetic crosses. To calculate probability, divide the number of one kind of possible outcome by the total number of all possible outcomes. For example, if you toss a coin, the chance it will land on heads is equal to 1 ÷ 2. This probability can be expressed as ½, 0.5, or 50%.

How many total possible outcomes are there?
---------------------------------------------------------------------------------
Complete the table below to show the number of outcomes and the probabilities in both fractions and percentages.

I I
Number of Outcomes I Fraction I Percentage
--------------------------------------------------------------------------------------
FR FR
--------------------------------------------------------------------------------------
FW FW
--------------------------------------------------------------------------------------
FR FW
--------------------------------------------------------------------------------------

Answers

I think it’s

FR FR: 3 outcomes; 1/4, 2/4, 1/4; 25%, 50%, 25%

FW FW: 3 outcomes; 1/4, 2/4, 1/4; 25%, 50%, 25%

FR FW: 4 outcomes; 1/4, 1/4, 1/4, 1/4; 25%, 25%, 25%, 25%

A white blood cell (WBC) encounters bacteria in a scrape on the knee of a child who has fallen off of his bicycle. The WBC’s job is to take the bacteria inside of itself and destroy the bacteria. If the bacteria cannot be moved across the WBC membrane, how will the WBC most likely take it in?

Answers

Answer:

The correct answer is - phagocytosis.

Explanation:

Phagocytosis is a type of endocytosis that also engulfs the solid material including microbial pathogens like bacteria and others. In immunity response macrophages, neutrophils and. immature dendritic cells are white blood cells that perform the phagocytosis process to kill the microbes and antigens.

Phagocytosis ingests and digest pathogens and develops an adaptive immune response an essential part of the innate immune system. WBC will most likely take it in through phagocytosis in the given case.

I really need help on this one.

One example of an effector involved in regulating increased body temperature in a
person is the smooth muscle in peripheral blood vessels.

b. Explain how this effector brings about a decrease in body temperature.

Answers

It b bryheshhbhdzji wait status jfkduftsf hdigigh

Answer:

hh

Explanation:

ne example of an effector involved in regulating increased body temperature in a

person is the smooth muscle in peripheral blood vessels.

When deciding on new environmental policies
and laws, which term is used to describe the
comparison between benefits and costs of
human activities?

Answers

Answer:trade-off

Explanation:trust me bro i just got it right

Snake venom contains a mixture of enzymes, which include phospholipase that break down cell membranes, proteinases that destroy proteins, as well as amino acid oxidases and nucleotidases that break down the monomers for protein and DNA synthesis, which is why they can be so deadly. If you were bitten by a venomous snake you may be treated with an antivenom. In addition to antibodies that help your immune system recognize and fight the foreign molecules, what else does the antivenom most likely contain

Answers

Answer:

The correct answer is - Venom enzyme inhibitors.

Explanation:

The snake venoms are the complex mixtures of phospholipase A2s, disintegrins, serine proteases, C-lectins, and metalloproteases, and others. The snake venom phospholipase A2s (svPLA2s) enzymes found in most of the families of venomous snakes that cause anticoagulant effects, cardiotoxicity, neurotoxicity, and cytotoxicity, and other effects.

In antivenom, there are Venom enzyme inhibitors other than antibodies that help in neutralizing these enzymes by weakening or inhibiting these toxic actions.

State your claim. Make sure your claim fully explains how infrared photography can be used to visualize temperature differences​

Answers

Answer:

Infrared thermography using an infrared camera is the most popular technique for detecting surface temperature without contact. ... Passive thermography measures relevant temperature differences of the surface by heating it with lamps (heat sources).

The picture shows a carafe of olive oil.
What is one of the primary functions of this food in the body?

a.) building proteins
b.) storing energy
c.) providing structure to cell walls
d.) carrying genetic information ​

Answers

Answer:

it builds protein and stores energy

B. Storing energy

Good luck I hope this helped!

A 10 N force and a 15 N force are acting on a box in opposite directions what edition force must be added to produce equilibrium

Answers

Answer:

5N of force acting the same way as the 10N of force to make it 15N of force

Explanation:

Neuvon Time to Recieve
Hand free phone
making a call tim (27 min)​

Answers

Answer:

Okay... Ig

Explanation:

which occurs during transition ?

Answers

There is no pic added in the question. I could have helped you.

Explain the role of PERISTALSIS during your food’s time in the esophagus as it travels to the stomach.

Answers

Peristalsis helps in storing food, breaking down food down and mixing it with juices secreted by stomach lining. Peristalsis in stomach helps in partial digestion of food called chyme.

Cierta especie de plantas varía en la forma de los bordes de sus hojas. Algunas de las plantas tienen hojas con bordes ondulados y algunas plantas tienen hojas con bordes rectos. En esta especie de plantas, un gen controla el rasgo de la forma del borde de la hoja. L representa el alelo dominante y I representa el alelo recesivo. Dos plantas con hojas de bordes ondulados se cruzan una con otra, produciendo 421 plantas. De las cuales, 298 plantas tienen hojas con bordes ondulados y 123 tienen hojas con bordes rectos. 3 ¿Cuáles son los fenotipos de las plantas madre en este cruce? А Lly II B Lly Ll C LL y ll DL y Ll​

Answers

Answer:

A. Lly

Explanation:

Creo que esto es correcto, pero No sé si esto es correcto

The right answer is A

What things do plants use to get food matter?




HELP ASAP​

Answers

Answer:

water and sunlight (for sure)

Answer:

Plants are called producers because they make their own food

Explanation:

Plants use minerals and water from the ground and their leaves absorb Carbon Dioxide (CO2) from the air.They convert these into food by using sunlight

Hope this Helped :)

Other Questions
Solve for X in the triangle. Round your answer to the nearest tenth Find z such that 97.5% of the standard normal curve lies to the left of z. (Enter a number. Round your answer to two decimal places.) Look at the images, listen to the audio, and match each sentence with its correct image.Audio 01: Audio 02: Audio 03: Audio 04: Match Term DefinitionAudio 01 A) Older cousin with a grey sweater on holding a younger nieceAudio 02 B) Two twin sisters playing and laughingAudio 03 C) Brother and sister hugging and smilingAudio 04 D) A grandmother kissing her grandson which graph shows the line y = -3x + 1 Share $2400 for three friends so that one friend gets twice as much as the smallest share and the other friend gets three times as much as the smallest share. It has been said that the first impressions are almost impossible to change . Based on your experiences , do you agree or disagree with this statement ? How does the casual language dante and shay use when they speak to eachother affect the way readers perceive them The stem of a plant must be strong to keep the plant from falling down. The roots of a plant grow underground and the roots take in water for the plant. What structure of an animal functions like the plant stem?Awnswers: A. the nose B. the heart c. the skin d. skeleton Write the correctfuture tense of the following irregular verb.yo/decir X Y-10 2-15 3-25 5Determine whether y varies directly with x. If so, find the constant of variation and write the equation Qu coincidencias pueden establecerse entre los dos textos en cuanto a: Personajes: Conflicto narrativo: Cul es la resolucin del conflicto en cada uno de los cuentos? Borges: Fontanarrosa: tryyyyy hardddddd!!!!!!!!!! A jar contains five red marbles and three green marbles. Amarble is drawn at random and not replaced. A second marble isthen drawn from the jar.find the probability that both marbles are the same color What type of media is Sasha using when she publishes an article on theInternet?O A. Mass mediaB. Traditional mediaC. Unbiased mediaD. Independent media Theparagraph gives the reader directions on how he or she can dosomething hey I need to do a project about ancient Egypt civilizations here is the stuff for it its due today and I will give 100 points if you finish it pls and thank you. Yo no _____-los libros de Gabriel Garca Mrquez.a. sb. conozcoc. conoced. sabe what was the incident due to which Muslims entered in South Asia HELP PLEASE PLEASE!!! y-(-4) =m(x-(-5)) solve for m