The opening graph in the video shows the measured relative abundances of elements in the galaxy. What is the 4th most abundant element?.

Answers

Answer 1

Answer: Carbon

Explanation:

The opening graph in the video shows the measured relative abundances of elements in the galaxy. What is the 4th most abundant element? Carbon has the fourth highest dot on the graph, and therefore is the fourth most abundant element.

Answer 2

Answer:

Carbon is the masured relative abundant element.


Related Questions

A cart with mass 2m has a velocity v before it strikes another cart of mass 3m at rest. The two carts couple and move off together with a velocity of?

Answers

Answer:

2/5 v

Explanation:

Use conservation of momentum

originally    mv = 2m v

  after the crash   mv is still the same (2mv)

        but the mass is now   5m x      where x is the new velocity

                   2mv = 5 mx

                  x = 2/5 v

                   

The momentum of two objects in a collision is conserved. Hence, the total initial momentum is equal to the final momentum of the coupled mass. Here the final velocity will then be 2/5 v.

What is momentum ?

Momentum of a moving object is the product of mass and velocity. It is a vector quantity with direction and magnitude. The total momentum of two colliding bodies is equal to the total final momentum after collision.

Let m1 and m2 be the masses and v1 and v2 be the final velocities. Vt be the velocity of the coupled mass.

Then, m1 v1 + m2 v2 = (m1 + m2) Vt

Given, mass of cart 1 = 2m

cart 2 = 3m

velocity of cart 1 = v

cart = 0 since it was at rest.

Then, 2m v + 0 = (2m + 3m) Vt

Vt = 2/5 v

Therefore, the final velocity of the couple of carts will be 2/5 v.

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A student draws the model shown below.



Which of these best compares the conditions at Location X and Location Y?
Answer

Answers

The statement that best compares conditions at Location X and Location Y is At Location x, there will be more daylight hours.

What are co-ordinate?

Generally, co-ordinates is the horizontal and vertical distances from the two reference axes are used to describe the position of a point on a coordinate plane

In conclusion, In the diagram, the student has created a model of the sun and the earth. Because the x point is pointing away from the sun, locations on point x receive more light than locations on point Y.

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what is a super moon?

Answers

When a full Moon occurs at the closest point to Earth during its orbit, it appears larger and brighter, becoming what is commonly known as a 'supermoon'

He much current is needed to operate a radio with a power of 80 watts when a potential difference of 135v is applied across itl

Answers

Answer:

593 mAmps

Explanation:

Power = 80 watts =  VI

               80 = 135 I

                 80/135 = I =

Which shows the correct order of processes leading up to the formation of a main sequence star?

Answers

The processes leading up to the formation of a main sequence star is that gases condense to form a nebula, gravity causes the nebula to collapse.

What is a nebula?

It should be noted that nebula simply means a stellar nursery where the stars take birth. Also, gases condense to form nebula.

In this case, the processes leading up to the formation of a main sequence star is that gases condense to form a nebula, gravity causes the nebula to collapse and spin.

Lastly, a protostar forms and then nuclear fusion occurs.

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You are taking measurements of sound waves. Every ¼ second, the sound waves pass your detector. What is the wave’s frequency and what is the wave’s period? (Use correct units)

Answers

Answer:

hope this helps, you can ask any questions for clarification

HELP PLEASE ILL GIVE BRAINLY

Answers

It’s quieter because of all the matter inside of something like a seaweed bed The energy would be higher in something more out in the open

What happens to the signal inside of the cell phone? Describe at least two kinds of transformations or changes that happen to the signal inside of cell phone.

Answers

Answer:

When you're talking on a cell phone, it converts your voice into a signal that is transmitted via radio waves to the nearest cell tower. The cell tower then relays the radio wave back to the person you're speaking to, converting it first to a signal and then back to sound again.

Explanation:

no explanation for you

but the answer is in the top!

Determine if the data are qualitative or quantitative.

Answers

Answer:

Qualitative, Quantitative, Qualitative, Quantitative, and Qualitative.

Explanation:

[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]

Here we go ~

Qualitative data determines the property or characteristics of certain object or behavior.

Quantitative data determines the number or quantity of a substance. basically dealing with how much/many things are being used.

Now let's move on to questions ~

#1. Carbon is a organic molecule.

- Qualitative

#2. The forest is 25% oak trees.

- Quantitative

#3. Water contains covalent bonds.

- Qualitative

#4. Sheila's blood pressure is 120/80.

- Quantitative

#5. The bat arm and human arm have similar bone structure

- Qualitative

Which of the following is evidence that electromagnetic radiation can be described by the wave model?(1 point)

Atoms absorb and emit electromagnetic radiation at discrete energy values.

Light from a flashlight spreads out to illuminate a dark room.

Electromagnetic radiation loses energy when it scatters off charged particles.

Light travels from faraway stars to Earth.

Answers

Answer:

Light travels from faraway stars to earth.

Answer:

light from a flashlight spreads out to illuminate a dark room

Explanation:

just took the quiz

A bus is traveling at 25 m/s, and a cyclist is traveling at 5 m/s behind the bus, in the same direction. the frequency of a sound coming from the bus is observed by the cyclist to be 1000 hz. approximately what is the frequency of the sound as perceived by the bus driver

Answers

Answer:

Approximately [tex]1061\; {\rm Hz}[/tex] (rounded to the nearest whole number,) assuming that the speed of sound in the air is [tex]330\; {\rm m \cdot s^{-1}}[/tex].

Explanation:

Let [tex]v[/tex] denote the speed of this sound wave: [tex]v = 330\; {\rm m\cdot s^{-1}}[/tex] by assumption.

Let [tex]\Delta v[/tex] denote the speed at which the source (the bus) moves away from the observer (the cyclist.) In this question, [tex]\Delta v = 25\; {\rm m\cdot s^{-1}} - 5\; {\rm m\cdot s^{-1}} = 20\; {\rm m\cdot s^{-1}}[/tex].

Let [tex]d[/tex] denote the distance between the source (the bus) and the observer (the cyclist) when the first crest leaves the source. At a speed of [tex]v[/tex], it would take [tex]d / v[/tex] before the first crest arrive at the observer.

Let [tex]T[/tex] denote the period of this wave. If a crest of this wave leaves the source at [tex]t = 0[/tex], the very next one would leave at [tex]t = T[/tex]. Since the source is moving away from the observer at [tex]\Delta v[/tex], the distance between the two would have since increased from [tex]d[/tex] to [tex](d + \Delta v\times T)[/tex]. At a speed of [tex]v[/tex], this crest would now need [tex](d + \Delta v\times T) / v[/tex] to reach the observer.

In summary:

The first crest leaves the source at [tex]t = 0[/tex] and arrives at the observer at [tex]t = d / v[/tex].The second crest leaves the source at [tex]t = T[/tex] and arrives at the observer at [tex]t = T + (d + \Delta v\times T) / v[/tex].

The time difference between the two crests is [tex]T[/tex] at the source. However, at the observer, this difference would have become:

[tex]\begin{aligned} &T + \frac{d + \Delta v\times T}{v} - \frac{d}{v} \\ =\; & T + \frac{\Delta v\times T}{v} \\ =\; & T\times \frac{v + \Delta v}{v}\end{aligned}[/tex].

Therefore, the ratio between the period at the source and at the observer would be:

[tex]\begin{aligned}\frac{T(\text{observer})}{T(\text{source})} &= \frac{\displaystyle T \times \frac{v + \Delta v}{v}}{T} \\ &= \frac{v + \Delta v}{v}\end{aligned}[/tex].

The frequency [tex]f[/tex] of a wave is equal to the reciprocal of its period [tex]T[/tex]. In other words, [tex]f = (1 / T)[/tex]. Therefore:

[tex]\begin{aligned}\frac{f(\text{observer})}{f(\text{source})} &= \frac{T(\text{source})}{T(\text{observer})} \\ &= \frac{v}{v + \Delta v}\end{aligned}[/tex].

Since [tex]f(\text{observer}) = 1000\; {\rm Hz}[/tex], [tex]\Delta v = 20\; {\rm m\cdot s^{-1}}[/tex], and [tex]v = 330\; {\rm m\cdot s^{-1}[/tex] by assumption:

[tex]\begin{aligned} & f(\text{source})\\ =\; & f(\text{observer}) \times \frac{v + \Delta v}{v} \\ =\; & 1000\; {\rm m\cdot s^{-1}} \times \frac{330\; {\rm m\cdot s^{-1}} + 30\; {\rm m\cdot s^{-1}}}{330\; {\rm m\cdot s^{-1}}} \\ \approx\; & 1061\; {\rm m\cdot s^{-1}}\end{aligned}[/tex].

You are riding a bicycle. if you apply a forward force of 172 n, and you and
the bicycle have a combined mass of 51 kg, what will be the forward
acceleration of the bicycle? (assume there is no friction.)
o a. 3.37 m/s2
b. 1.67 m/s2
c. 1.85 m/s2
d. 0.30 m/s2

Answers

Answer: D. 3.37m/s

Explanation:Just qnswerd iit

Sally and Suzy are moving into their first college dorm together. They are loading all their furniture onto a truck with a ramp that is 8 feet long.

How far is the back of the truck off the ground if the mecanical advantage of this ramp is 2?


A) .25 ft
B) 4 ft
C) 8 ft
D) 16 ft​

Answers

Answer:

B

Explanation:

Formula

Mechanical advantage = length of the ramp / height

Givens

Length of the ramp = 8

Mechanical advantage = 2

height = ?

Solution

2 = 8feet / height                                  Multiply both sides by height

2* height = 8 feet * height / height      Combine

2* height  = 8 feet                                 Divide by 2

2*height/2 = 8 feet/2                              

height = 4 feet.

Try moving the magnet in the different ways described in the table below,. Record your observations in the second column of the table. MotionMove the magnet straight through the coil, leading with the north pole. Once the magnet is completely through, move it back to its original position. Move the magnet straight through the coil, only this time leading with the south pole. Once the magnet is completely through, move it back to its original positionPut the magnet in the center of the coil, but don't move it. Put the magnet on the outside of the coil. Repeatedly move it up and down while outside of the coil. Keeping the magnet outside of the coil. Repeatedly move it back and forth horizontally.Place the magnet back inside of the coil. Now repeatedly switch the polarity of the magnet by pressing the button toward the bottom-right of the page over and over again.

Answers

Base on the experiment, we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

What is Faraday's law of electromagnetism?

Faraday's law of electromagnetism states that the negative rate of change of time (Δt) of the flux of the magnetic field (∅) through a surface is directly proportional to the flux (∅) of the electric field through a surface that has the loop as its boundary.

Electric generators are primarily designed and developed to use the properties of electromagnetism to convert kinetic energy (KE) that is possessed due to motion, into electrical energy. Thus, we can deduce that the mode of operation or working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

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Answer:we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

Explanation:

Suppose that you want to heat a gas so that its temperature will be as high as possible. Would you heat it under conditions of constant pressure or constant volume

Answers

According to Gay - Lussac's law, you should heat it under conditions of constant volume.

Ideal Gas

An ideal gas obeys the equation of state PV = nRT at all pressures, volume and temperatute.

According to Boyle's law, the volume of a gas is inversely proportional to the pressure while temperature is constant.

Also, according to Gay - Lussac's law, increase in temperature is direclty proportional to increase in pressure while volume remains constant.

Suppose that you want to heat a gas so that its temperature will be as high as possible. According to Gay - Lussac's law, you should heat it under conditions of constant volume.

Therefore, to heat a gas so that its temperature will be as high as possible, you should heat it under conditions of constant volume.

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part b
The EPA examines six air pollutants to assess air quality. These pollutants are listed in the table. To learn more about them, conduct research using the search term "EPA six common air pollutants." Use your research to fill in the table.
part c
In 1970, the US Congress passed the Clean Air Act to combat increasing levels of harmful pollution in the atmosphere. The law was amended in 1977 and 1990 to make major improvements. Read a brief summary about the Clean Air Act. Then read about how our nation's air status and trends have changed since this law was passed. As you’re reading and scrolling through the nation’s air quality trends, list three positive or negative outcomes of the Clean Air Act.
part d
This image from the EPA shows the projected benefits and costs from the most recent amendments to the Clean Air Act. A net improvement in economic welfare is projected because cleaner air leads to better health and productivity for American workers. It also reduces medical expenses for air pollution-related health problems.

Answers

Answer:

Part C is the first one and Part D is the second one. hope this helps you a lot because i did for me and I got a A+

Explanation:

Positive Outcome :

Cleaner lungs.

Decreased asthma and allergies symptoms.

Improved skin appearance.

Helps digestion.

Psychological and emotional stabilizer.

Better mood and normalized sleep patterns.

Reduce chances of lung, heart, and arterial diseases.

Negative Outcome :

According to the EPA, when we are exposed to high levels of hazardous air pollutants for an extended period of time .

We face a greater risk of suffering serious health effects, including respiratory diseases, neurological disorders, reduced fertility, damage to our immune system, and increased risks of getting cancer.

One of the health hazards that suprised me is that outdoor pollution is associated with hearth attacks. I know that outdoor pollution causes lung problems whether that's asthma attacks or bronchitis, but I didn't know about heart attacks. Apparently, air pollution can trigger heart attacks, stroke, and irregular heart rhythms. People who are already at risk for these conditions are more likely to have any of those. Air pollution causes damage to the inside walls of your blood vessels, causing them to become narrower and harder. Along with that, there are many different positives and negatives that came from the Clean Air Act some of which are more of these one that I explained on the top.

A summary paragraph evaluating the Clean Air Act in terms of cost and effectiveness given below.

What is pollution?

The contamination of air or water or land by the human waste or chemicals is called as pollution.

Positive Outcomes are -

Cleaner lungs.Diminished asthma and sensitivities side effects.Further developed skin appearance.Helps absorption.Mental and close to home stabilizer.Better temperament and standardized rest designs.Lessen chances of lung, heart, and blood vessel illnesses.

Negative Outcome is -

As indicated by the EPA, when we are presented to elevated degrees of perilous air poisons for a lengthy timeframe .

We face a more serious gamble of experiencing serious wellbeing impacts, including respiratory sicknesses, neurological issues, decreased fruitfulness, harm to our insusceptible framework, and expanded dangers of getting malignant growth.

The outside contamination is related with hearth assaults. Open air contamination causes lung issues like asthma assaults or bronchitis . Air contamination can set off coronary episodes, stroke, and sporadic heart rhythms. Air contamination makes harm within walls of your veins, making them become smaller and harder.

Thus, the Clean Air Act is explained.

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While electric current is flowing through a wire, what surrounds the wire?.

Answers

A material that doesn't conduct electricity well - such as a plastic/rubber covering, acting as the electrical insulator.

Hope this helps!

Question 1 of 25 Which produces the most energy?

Answers

Answer:

electric stuff

Explanation:

I didn't see any option choices so srry

If military strategists understand wave behavior, what impact could that have on the armed forces?

Answers

Answer:

they may find ways of solving wars without fighting

Explanation:

This is because when the military understand why the other nation is planning a war they can resolve it simply

What objects have orbital paths? A. the sun and stars
B. meteors and asteroids C. the planets and moons

Answers

Answer:

The planets and moons.

Explanation:

Planets follow an elliptical path around the sun (kinda oval shaped). Moons do the same to planets.

Cause and Effect Reasoning Quick Check

1. Cells can repair small amounts of damage. In what situation-
[Answer: A person is exposed to large amounts of gamma rays.]
2. If a certain amount of time in the sun is dangerous for adults, what could-
[Answer: The adult and child would get the same damage per]
3. An individual must receive quite a lot of sun exposure over time to develop a high risk of cell damage. [Answer: A shorter exposure time to X-rays gives the same risk]
4. Ultraviolet light can damage a cell. Which exposure would most likely-
[Answer: 5 minutes of exposure to UVB light]
5. New vaccine studies are sometimes tested on pigs.
[Answer: Humans have an immune system very similar to pigs.]

Answers

The principle of cause and effect is applied in every life as is seen in damage caused to cells by exposure to large amounts of ultravoilet rays.

What is cause and effect?

Cause and effect refers to the principle in which for every effect received or observed, an underlying cause is present.

Based on cause and effect;

Cells can repair small amounts of damage caused when a person is exposed to large amounts of gamma rays.

If a certain amount of exposure time in the sun is dangerous for adults, would result in a similar damage to a child.

A lot of sun exposure over time will cause an individual to develop a high risk of cell damage just as a shorter exposure time to X-rays gives the same risk.

Ultraviolet light can damage a cell especially with over 5 minutes of exposure to UVB light.

New vaccine studies are sometimes tested on pigs because humans have an immune system very similar to pigs.

Therefore, cause and effect is applied in every activities.

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A toy train is going around a circular track of a radius of 1.2 m as shown on the diagram. The train takes 9 seconds to complete one lap of the circular track.
(a) Calculate the speed of the train

(B) on the diagram draw in the train's velocity and acceleration vectors at B. Label clearly.


(c) For the train to move in a circle like this there
must be a centripetal force acting on it.
Explain how this force is being produced

Answers

Explanation:

r=1.2, Period(T) = 9s

a) Speed(V) = ωr

ω = 2 x Pi(3.142) x frequency

frequency = 1/period

therefore; the frequency will be 1/9 = 0.1Hz

Therefore Speed(V) = 2 x 3.142 x 0.1 x 1.2=0.75m/s

C) Centripetal and centrifugal forces are the forces experienced by rotating objects. The centripetal force keeps an object moving in a circle and is always pointed toward the center of that circle. For instance, the gravitational force of the sun is a centripetal force that keeps the Earth orbiting around it. Its direction is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path.

why do we use dry cell in torch light ?

Answers

Answer:

The three reasons for this is because of high enrgy density, self-discharge, and small amount of energy.

Explanation:

These are why that happens.

Hope this helps!

-Justin

The potential energy of a swing is 200 j at its highest point and 50j as its lowest point energy is conserved ,what is the kinetic energy of the swing at its lowest point

Answers

Answer:

150J

Explanation:

yee thats it hope it helps

Infrared light is invisible because it has a wavelength that is ____________________ than the human eye can perceive.

Answers

Answer:

700 nanometer to one millimeter

The maximum distance particles of the medium move when a wave passes through them is wave:.

Answers

Answer:

Amplitude I believe.....

Explanation:

If a rock on a cliff starts with 3,000 J of GPE and 0 J of KE and ends with 0 J of GPE and 5,000 J of KE, what law of physics would this violate?

Answers

The law of physics that this scenario would violate is the law of conservation of energy.

What is the law of conservation of energy?

The law of conservation of energy states that energy possessed by an object or physical body can neither be created nor destroyed but can only be transformed from one form to another.

This ultimately implies that, the energy possessed by the rock at the beginning must be equal to the energy possessed by the rock at the end in accordance with the law of conservation of energy.

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What kind of particles exert electric force?

Answers

The particles which are in the field of forces means in the field line of forces they experience electric force.

Explanation:

Koto traveled 5,000 meters north from her house with an average velocity of 4.5 m/s. what was the time of her trip? (there are 60 seconds in 1 minute.) 18.5 minutes 20.4 minutes 2 hours 3 hours

Answers

Answer:

20.4 minutes

Explanation:

5000 m / (4 m/s) = 1250 seconds  

   1250 seconds / 60 seconds/minute = ~ 20.4 minutes

Time taken by Koto during her trip is (a) 18.5 minutes.  

The details given in the question:

The distance travelled by Koto = 5000 meters

Koto's average velocity = 4.5 meters/second

To calculate time of Koto's trip following formulae is used:

Time = Distance/Velcoity

Time = 5000 meters/4.5 meters*[tex]Seconds^{-1}[/tex]

Time = 1111.11 seconds or 18.5 minutes

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If a 2 meter diameter ball representing the Sun were placed in Center Circle in Indianapolis, how far away should the Earth be placed?

Answers

By applying the correspondent change of scale, we will see that Earth should be placed 214.8m away from the scale sun.

How far the Earth should be placed?

The real radius of the Sun is:

R = 696,340 km

And the radius of the scale Sun is 1m, then we have the relation:

1m = 696,340 km

1 = (1m/696,340 km)

Now, the real distance between the Sun and Earth is:

d = 149,600,000 km

If we apply the change of scale we have above, we will get:

d =  149,600,000 km*(1m/696,340 km) = 214.8m

So the Earth should be placed at 214.8m of the ball that represents the sun.

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