What is the role of the respiratory system?
a.
to bring water into the body
b.
to bring oxygen into the body
c.
to bring carbon dioxide into the body
d.
none of the above

Answers

Answer 1
it is to bring oxygen to the body so B
Answer 2
It's B, to bring oxygen into the body.


Comment if the answer is right or wrong so other people that need this will be 100% sure. 

Related Questions

A road is built leading to a farm in a wooded area. What is an unlikely effect of the road? A increased temperature from traffic
B increased smog from traffic
C increased flooding
D an increase in temperature of nearby streams

Answers

Answer : Option D) an increase in temperature of nearby streams.

Explanation : When the road is build leading to a farm in a wooded area, it unlikely that there will be increase in temperature of the nearby streams as there is no direct relation of increasing temperature of the stream and building of the road. As all other options are likely to happen when the road will be built.

Answer:

D an increase in temperature of nearby streams

Explanation:

it should be D increase of streams and temperature a road built in a wooded area wood can hot real quickly and things by it

so you're answer is d

Do other planets in our solar system have tilts? If so, How do they affect the planet?

Answers

Thanks to tilt we have our different seasons, Summer, Winter, Etc. I'm also pretty sure all planets have some tilt some bigger than others. A good example of a tilted planet is Uranus, its tilt is so much, it's practically on its side. So when it spins only 1 hemisphere is actually facing the sun. So on one half of Uranus, it's always Winter and the other half is always Summer

A train travels 86 kilometers in 1 hours, and then 98 kilometers in 1 hours. What is its average speed?

Answers

Answer: average speed = 92 km/h

Explanation:

1) Data:

distance 1 = 86 km
time 1 = 1 hour

distance 2 = 98 km
time 2 = 1 hour

average speed = ?

2) Formula:

average speed = distance / time

3) distance = distance 1 + distance 2 = 86 km + 98 km = 184 km

4) time = time 1 + time 2 = 1 h + 1 h = 2h

5) average speed = 184 km / 2h = 92 km/h

what are the two criteria necessary for a substance to be considered a magnet

Answers

Answer:The substance;

- must possess poles (north and south)

- exhibit force of attraction and repulsion i.e obeys law of magnetism)

Explanation:

For a substance to be considered a magnet, such magnet must be able to attract metallic objects to itself when placed in a magnetic field.

The substance must possesses free north and south poles at its ends because magnets generally possesses both the force of attraction and repulsion which is dependent on the nature of the poles of the magnetic substances coming together. Like poles of magnets (same poles) are known to repel each other while unlike poles (different poles) of magnets attracts each other

Final answer:

A substance is considered a magnet if it can generate a magnetic field and has both north and south poles. Magnetic fields are created by the movement of electric charges or inherent magnetic properties. In ferromagnetic substances, magnetic domains align in a manner that produces a large-scale magnetic field.

Explanation:

To be considered a magnet, a substance must satisfy two essential criteria. Firstly, it needs to generate a magnetic field, which is an invisible force field that exerts a force on other ferromagnetic materials and moving electric charges. The magnetic field is produced either by the movement of electric charges or by intrinsic magnetic properties of the substance itself.

Secondly, a magnet must have both north and south poles. This is a fundamental property of all magnets: if you were to cut a bar magnet in half, you would end up with two smaller magnets, each with its own north and south pole. The two poles represent the directionality of the magnetic field - it emanates from the north pole and loops back into the south pole.

Common types of magnets, such as ferromagnets, achieve these properties through their structure at an atomic level. In ferromagnetic materials, small regions known as magnetic domains are created where atoms are grouped together with their magnetic dipoles aligned in the same direction, producing a noticeable large-scale magnetic field.

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Can someone with an IQ score of 120 be gifted? Based on psychological thought, explain why or why not and give an example. ILL MARK U BRAINLIEST

Answers

Hello!

Yes, someone with an IQ score of 120 can be gifted. 

An IQ score of 120 means that the individual is moderately gifted. Although this IQ doesn't qualify for gifted education programs, research shows that people with IQs of about 145-180 don't perform significantly better than people with 120s IQ in terms of success.

As an example, professor Dean Simonton from the University of California found that an optimum leader should have an IQ in the 120-125 range, so having an IQ of 120 would mean that the individual is gifted for leadership.

Have a nice day!

Someone with an IQ score of 120 can be moderately gifted. Though people with a 120 IQ do not qualify for gifted programs, it has been shown that they aren't any less likely to succeed than people with an IQ of 180. For example, those with IQs in the 120-130 range are more likely to succeed at leadership roles, while those with higher IQs might not be best suited for those positions, but are instead gifted in other areas where people with 120 IQs are not.  

you slide a hockey puck across the ice in a hockey rink the puck gradually slows down as it moves how does newtons first law explain the motion of the puck

Answers

"An object in motion tends to remain in motion UNLESS acted on by an external force" {emphasis on UNLESS} 

In the case of a puck sliding across the ice: it slows (decelerates) because of the friction force between ice and puck. THIS friction force IS the external force spoken about in the 1st Law, above...and...thus is the reason the puck eventually stops moving.

Answer:

It explains it becuase it was acted on by an outside force being the ice and friction.

Explanation:

Like stated above an object in motion stays in motion unless acted upon by an outside force. In this scenaro it was the ice and the puck causing friction and it finally stopping.

what causes the change from day to night?

Answers

Earths Rotation
Earth's rotation is the rotation of Planet Earth around its own axis. Earth rotates eastward, in prograde motion. As viewed from the north pole star Polaris, Earth turns counterclockwise. 
"AB84"
The earth rotates as the sun travels around it. If the sun was not was not on the other side, it would be night there, but if the sun was shooting to the side it would be day time.

What is power the quotient of?

Question 7 options:

work and time

speed and distance

work and distance

speed and energy

Answers

Power is equal to work divided by time

Answer:

Power the quotient of work and time.

Explanation:

Power is the quotient of work and time. It is also defined as the rate at which any work is done. Work done is equal to the product of force and the displacement. The mathematical formula of power is given by :

[tex]P=\dfrac{W}{t}[/tex]

The SI unit in which power is measured is watts. It is equivalent to Joules per second.Hence, the correct option is (a).

A scooter is moving with a speed of 18 m/s. Its mass is 20 kg. What is the magnitude of its momentum?

Answers

p=mv
p=20x18
p=360 kgm/s

What's a good sentence describing my roller coaster

Answers

you will die if you ride that

Final answer:

A roller coaster utilizes the principles of physics, specifically potential and kinetic energy, to create thrilling rides.

Explanation:

A roller coaster is a thrilling ride that is designed to take advantage of the principles of physics. One important concept that comes into play is potential energy. At the start of the ride, the roller coaster is lifted up to the highest point, storing potential energy. As the coaster moves down the track, the potential energy is converted into kinetic energy, causing the coaster to gain speed. This transfer between potential and kinetic energy is what makes roller coasters exciting.

Amy wants to know whether or not an item will float when placed in a fluid. Which of the comparisons below, when true, will mean that the item will float?

A. The object is made of stone or metal, which always sink.
B. The force of gravity is stronger than the buoyant force.
C. The buoyant force is stronger than the force of gravity.
D. The mass of the item is greater than its gravity.

Answers

c. if gravity(downward force) is greater than buoyancy object will sink

five students measured the same kind with the ruler shown below the results reported by the students were as follows 4.51 cm , 4.55cm, 4.5cm and 4.6 cm even though you cannot see the line they measured which of the recorded measurements is not correct acorriding to the precision of the ruler

Answers

The figure of the ruler is missing. However, it is possible to answer: the only possibility is that 4.51 cm is the wrong measurement.
In fact, all the other measurements have as last digit a 0 or a 5: it means that the ruler has probably a precision of 0.05 cm. With a ruler with such precision, it's impossible to measure 4.51 cm, so this value must be the wrong one.

Which of the following types of electromagnetic radiation has the shortest frequency? (2 points) Infrared waves Microwaves Ultraviolet waves X-rays

Answers

In order from shortest to longest frequency, the electromagnetic waves can be ranked :

1. X-rays

2. Ultraviolet

3. Infrared

4. Microwave

X-rays has the shortest frequency which ranges between 30 petahertz to 30 exahertz. X-rays have the smallest wavelengths at 0.01-10 nanometers. Its energy ranges between 100eV to 100keV.

what are the 30 commands in rotc, airforce

Answers

Flight, fall in 2. Open ranks, MARCH 3. Ready front 4. Close ranks, MARCH 5. Present arms 6. Order arms 7. Parade rest 8. Flight, Attention 9. Left face 10. About face 11. Forward, MARCH 12. Right flank, MARCH 13. Left flank, MARCH 14. Column right, MARCH 15. Forward, MARCH 16. To the rear, MARCH 17. To the rear, MARCH 18. Column right, MARCH 19. Forward, MARCH 20. Eyes right 21. Ready front 22. Column right, MARCH 23. Forward, MARCH 24. Change step, MARCH 25. Column right, MARCH 26. Forward, MARCH 27. Flight, HALT 28. Left face 29. Right step, MARCH 30. Flight, HALT 

The 30 commands in AFJROTC are key instructions taught to cadets for performing precise and unified movements. These commands include 'Fall In,' 'Present Arms,' 'Forward March,' and 'Fall Out' etc. They are essential in developing discipline and teamwork among cadets.

30 Commands of AFJROTC

In Air Force Junior Reserve Officer Training Corps (AFJROTC), cadets are taught various drill commands to ensure precise and unified movements. Below are the 30 commands used in AFJROTC:

Fall InOpen Ranks, MarchReady, FrontClose Ranks, MarchPresent ArmsOrder ArmsParade RestAttentionLeft FaceAbout FaceForward MarchRight Flank, MarchLeft Flank, MarchColumn Right, MarchForward, MarchTo the Rear, MarchHaltLeft Step, MarchRight Step, MarchHalf Step, MarchForward, MarchAbout, FaceEyes, RightReady, FrontColumn Right, MarchForward, MarchChange Step, MarchColumn Left, MarchForward, MarchFall Out

These commands are designed to develop discipline, coordination, and team spirit among cadets, which are essential qualities for future military officers.

What is a group in the periodic table of elements?

Question 6 options:

the elements that have the same atomic number


the elements that have similar densities and atomic sizes


the elements that are in the same column of the periodic table of elements


the elements that are in the same row on the periodic table of elements

Answers

its a column on the periodic table
Elements in the same column

the specific heat capacity of iron is 440j(kgK) How much thermal energy is gained when the temeperature of 800g of iron is raised by 120 degrees C?

Answers

Final answer:

The thermal energy gained when the temperature of 800g of iron is raised by 120 degrees C is 42,240 J.

Explanation:

To calculate the thermal energy gained when the temperature of 800g of iron is raised by 120 degrees C, we can use the equation:

Q = m * c * ΔT

Where:

Q is the thermal energy gainedm is the mass of the iron (in kg)c is the specific heat capacity of iron (in J/kg·K)ΔT is the change in temperature (in K)

Plugging in the given values:

Q = (0.8 kg) * (440 J/kg·K) * (120 K) = 42,240 J

Therefore, the thermal energy gained when the temperature of 800g of iron is raised by 120 degrees C is 42,240 J.

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What is the name of the system of measurement used by most countries around the world?

Answers

Most countries besides the USA use the metric system also known as S.I (system internationale) as a system of measurement... 
the metric system is the answer

30 PTS
Choose the best answer to describe light waves transmission when it meets a medium. * 1 point Spreads out in the medium Goes into the medium Goes through the medium Bounces off the medium Appears to bend in the medium

Answers

Spreads out in the medium, first choice

jack and his family go to the movies first they eat lunch at 1:30 pm it takes 40 minutes to eat then the movie then they drive 25 minutes to get to the movie theater theater at what time did the get to the theather

Answers

The answer would be 2:25

Answer:

2:25

Explanation:

What does the person in back of the ambulance experience? A) a lower frequency of the siren B) a lower amplitude of the siren C) a higher frequency of the siren Eliminate D) a higher amplitude of the siren

Answers

The answer to your question is "A. a lower frequency of the siren.

Because the person in back of the ambulance will hear a lower frequency of the siren. This is because the waves are stretched out. A longer wavelength results in a lower frequency.

Answer: The correct answer is A.

Explanation:

When there is a relative motion between the source and the observer then there will be change in the frequency or wavelength of the wave. This phenomenon is called Doppler effect.

For example, when the source and the observer are moving away from other then the frequency decreases in this case.

In the given problem, the person is in the back of the ambulance. In this case, the person in the back of the ambulance will listen a lower frequency of the wave. There will be longer wavelength.

Therefore, the correct answer is A.

Define circuit training

Answers

Form of body conditioning endurance training or resistance training using high intensity

Final answer:

Circuit training refers to the design and function of electric circuits, which utilize components like resistors, capacitors, and diodes to perform specific tasks, from simple to complex applications in technology.

Explanation:

Circuit training is a sequence of exercises, completed one after another, with minimal rest in between. In contrast to the fitness concept of circuit training, the term you might be looking for within a physics context is circuit design or electric circuits. An electric circuit is a collection of electrical components such as resistors, capacitors, and diodes that are connected to perform a specific task. A simple example is a circuit in a flashlight, while a complex example would be the circuits used in supercomputers.

Circuits are integral to the functioning of many modern technologies, from motors and cell phones to computers. In the 1980s, an electrical engineer would have used principles of electric circuits to design the first circuit board with built-in self-testing features. Meanwhile, circuit construction tools like the PhET Explorations Circuit Construction Kit allow students and enthusiasts to experiment virtually with circuits, enhancing their understanding of these systems.

An RC circuit, specifically, is comprised of a resistor (R) and a capacitor (C), with the capacitor being a component that stores electric charge. Understanding electric circuits' design and function is essential for creating various electrical applications that are part of our daily lives.

Arthur is testing how well various types of disinfectants can kill E. coli bacteria. He starts with a Petri dish that is covered with E. coli. He puts exactly one milliliter of each different disinfectant at a different location on the Petri dish. If a disinfectant works, it will eliminate the bacteria in the area in which it was placed. Two days later, Arthur will measure the amount of bacteria that has been cleared out by each disinfectant. Which of the following is a variable in this experiment? A. the type of disinfectant used B. the type of bacteria used C. the Petri dish used D. the length of time that the disinfectant is used

Answers

the variable is the disinfectant that is used, because there different ones being used

Answer:

the answer is a, the type of disinfectant used.

Explanation:

this was the answer i put it and it was right

We claim that momentum is conserved. Yet most moving objects eventually slow down and stop.Can you explain.

Answers

gravity, external forces

if you threw a baseball in space, would it not keep on going forever and ever until it collided with another object or was pulled to another planet by gravitational forces? Look up Haley's comet.. technically it is caught in an orbit but has been moving nonstop for hundreds of years
gravity and external forces,

How old is the moon!

Answers

4.53 billion years

1.653 trillion days

39.68 trillion hours

2.381 × 10^15 minutes

1.429 × 10^17 seconds

Answer:

4.53 billion years old

Explanation:

Moon is considered to be formed about 60 million years later to the formation of the solar system. The rocks brought from surface of moon suggest its age to be about 4.53 billion years. The Giant-impact hypothesis suggests that moon was formed when a Mars sized object collided with the Earth, the debris accreted to from the moon.

Drag the tiles to the correct boxes to complete the pairs.
Match each form of energy to its description.

Answers

This is the match:

1) stored energy related to positions of atoms within molecules ↔ chemical energy

Explanation: the chemical energy is the energy stored in the bonds that binds the atoms that form the molecules.

2) energy released when a nucleus splits or combines ↔ nuclear energy

Explanation: there is a huge energy inside an atom which may be released when nuclei suffer fusion (combination of nuclei) or fission (split of nuclei). The fusion of atoms is what happens in stars and it is the source of their energy. Fision of atoms is the nuclear energy used in the nuclear plants to produce electricity.

3) energy related to an object's movement ↔ motion energy

Explanation:

The motion energy is the kinetic energy, KE. KE = (1/2) m* v^2

4) energy related to heigth ↔ gravitaional potential energy

The higher an object is the higher its gravitational potential energy, PE.

PE = m*g*h.

5) energy related by vibration of a string ↔ sound energy

Explanation:

Sure you have seen that: when the string of a guitar vibrate the sound is produced.

6) energy of motion of particles in a substance ↔ thermal energy

The thermal energy is the product of the motions (vibration, translation and collisions) of the molecules that form the substance. The higher the motion the the higher the thermal energy measured as temperature.

Answer: The image below has the correct answers

Mechanical waves are classified according to a. their size. b. their shape. c. how they move. d. their source. Please select the best answer from the choices provided A B C D

Answers

Hi!

The correct answer is C. how they move.
The answer is C. How they move

Which example is NOT a part of the electromagnetic spectrum?

A)
microwaves


B)
radio waves


C)
electricity


D)
purple light

Answers

Explanation :

The electromagnetic spectrum shows the wavelength or frequency range of any wave.

It consists of the following waves :

Gamma rays (short wavelength or high frequency)X-raysUltraviolet raysVisible lightInfrared raysMicrowaves Radio waves (long wavelength or short frequency)

So, the purple light is not the part of the electromagnetic spectrum.

Hence, the correct option is (c).                          

Electricity is NOT a part of electromagnetic spectrum.

An electromagnetic spectrum contains electromagnetic radiations arranged according to frequencies and wavelength.

Further Explanation Electromagnetic waves  Electromagnetic waves are types of waves that do not require a material medium for transmission. These waves are mostly transverse in nature, which means the direction of transmission is perpendicular to the direction of vibration of particles. They include, light waves, radio waves, x-rays, infra-red, etc. Electromagnetic spectrum An electromagnetic wave shows electromagnetic waves arranged according to frequencies and wavelength.  Electromagnetic spectrum contains electromagnetic waves: Gamma rays, x-rays, Ultraviolet, Visible light, infra-red, microwaves, and radio waves. The electromagnetic spectrum is divided into various sections based on wavelength, with gamma rays having the shortest wavelength and radio waves having the longest wavelength. The part of the electromagnetic spectrum that we can see using our naked eyes is called the visible light spectrum. In order of frequency, the radio waves have the lowest frequency while gamma rays have the largest frequency. General characteristics of electromagnetic waves  They travel with the speed of light (3.0 x 10^8 m/s) They possess energy that is given by; E =hf, where h is the plank’s constant and f is the frequency. They are transverse in nature, and therefore, the wavelength is measured between successful crests or troughs. They can travel through vacuum

Keywords: Electromagnetic spectrum, electromagnetic waves.

Learn more about:  Electromagnetic spectrum: https://brainly.com/question/11725209 Electromagnetic waves: https://brainly.com/question/12450147 Characteristics of electromagnetic waves: https://brainly.com/question/12450147

Level: High school  

Subject: Physics

Topic: Electromagnetic spectrum

A cyclist rides over the top of a hill. Is the bicycle's motion rotational,translational,or a combination of both?Uniform circular motion.

Answers

A combination of both.

In fact, if we consider the wheels of the bycicle, they are moving by circular motion (since they cover a circular path), so this motion is rotational because the wheels are turning around an axis. However, the bycicle is moving from a certain point (bottom of the hill) to another location (top of the hill), so it is also a translational motion.

The motion of a cyclist riding over the top of a hill is a combination of rotational and translational motion, where the wheels rotate and the entire bicycle moves along a path.

The motion involved when a cyclist rides over the top of a hill consists of both rotational and translational components. The wheels of the bicycle exhibit rotational motion because they spin around an axis, which is a clear case of rotational motion, where points in the object move in circular paths centered on one point. At the same time, the entire bicycle with the cyclist is moving along a path that overcomes the hill, which is an example of translational motion. Therefore, the bicycle's motion can be seen as a combination of rotational and translational motion. Interestingly, the rolling motion of a wheel is a classic example of such a combination, where different parts of the wheel are moving with different velocities due to their relative positions with respect to the center of mass or the point of contact with the surface.

September 21 is the beginning of ________ in the southern hemisphere.

spring
summer
autumn
winter

Answers

Answer

Correct answer is Spring

Explanation

In southern hemisphere there are four seasons which are as follows

Spring

spring begins in the month of September

Summer

summer begins in the month of December

Autumn

autumn begins in the month of March

Winter

winter begins in the month of June.

spring

its the correct answer on the test,, goodluckk :)!

Photosynthesis transforms molecules of water and carbon dioxide into Molecules of?

Answers

Into molecules of sugar and oxygen.
The complete reaction of the photosynthesis is in fact:
[tex]6CO_2+6H_2O \rightarrow C_6H_{12}O_6+6O_2[/tex]
and the energy of the light coming from the sun is also used to make the reaction possible.
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