The total amount of carbon dioxide in the atmosphere is estimated to have decreased by 10 to 15 percent since 1900.


True False

Answers

Answer 1

Answer: False

Explanation:  


Related Questions

someone help me! you get 27 points if you get it right

Answers

Answer:

1. D

2. D

3. A

The reason why your body goes right and the car car goes left is because your body tries to stay where it was, which is on the right. Your upper body doesn't feel a force and because of that continues in the same direction. Your lower half is pulled out from under you by seat friction to the left, leaving you leaning to the right.

what is the velocity at 11 seconds

Answers

Answer:

should be A

Explanation:

there isn't a 3, so it must be his deceleration, which would be 5-3=2

Why are force fields necessary to describe electric force? 0 A. Electric force acts at a distance. O B. Electric force can only attract objects. C. Electric force is a form of gravity. D. Electric force attracts two poles.​

Answers

Answer:

A. Electric force acts at a distance.

Explanation:

"Electric force," just like gravitational force is a "non-contact force." This means that even at a distance, two objects with no physical contact will create movement with the help of electric force. This leads to the concept of "force fields or field force" that explains why a charge object alters the region surrounding it. Once an object enters the region, it immediately experiences its force. An example of this is holding out one's hand near a "Van de Graaff generator." The electric force compels the hair strands to stand up.

PLEASE SOMEONE HELP!!! ANSWER IF YOU KNOW PLEASE!!! LOTS OF POINTS!!!

Answers

Answer:

i think that magnet can cause kinetic because

it is made of iron or steel that attract other magnetic things

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Accounts for about 70% of the mass-energy content of the universe. It acts in opposition to gravity.
a
pressure eventually become, causing nuclear fusion
b
objects shift toward red on the spectrum & objects are moving away
c
Spiral galaxies appear to be a rotating disk of stars and dust

Answers

I think it’s b because gravity pulls down or tword and that says moving away I could be wrong but I think it’s b

the gravitational force produced between any two
objects kept at 2.5*10^km apart is 580N. at what distance
should they be kept so that the gravitational force becomes
half?​

Answers

Answer:

The two objects should be kept at a distance of [tex]3.535\times 10^{4}[/tex] kilometers.

Explanation:

From Newton's Law of Gravitation, gravitational force ([tex]F[/tex]), measured in newtons, between two objects is inversely proportional to the square of distance ([tex]r[/tex]), measured in meters. That is:

[tex]F \propto \frac{1}{r^{2}}[/tex] (1)

[tex]F = \frac{k}{r^{2}}[/tex] (2)

Where [tex]k[/tex] is the proportionality ratio, measured in newtons-square meter.

Now we eliminate the proportionality by constructing the following relationship:

[tex]\frac{F_{2}}{F_{1}} = \left(\frac{r_{1}}{r_{2}}\right)^{2}[/tex] (3)

If we know that [tex]\frac{F_{2}}{F_{1}} = \frac{1}{2}[/tex] and [tex]r_{1} = 2.5\times 10^{7}\,m[/tex], then the distance between the two objects so that gravitational force becomes half is:

[tex]\frac{1}{2} = \frac{(2.5\times 10^{7}\,m)^{2}}{r_{2}^{2}}[/tex]

[tex]r_{2}^{2} = 1.25\times 10^{15}\,m^{2}[/tex]

[tex]r_{2} = 3.535\times 10^{7}\,m[/tex]

[tex]r_{2} = 3.535\times 10^{4}\,km[/tex]

The two objects should be kept at a distance of [tex]3.535\times 10^{4}[/tex] kilometers.

2. A sled with no initial velocity accelerates at a rate of 1.1 m/s down a hill. How
long does it take the sled to go 13 m to the bottom?

Answers

Answer:

Time, t = 4.862 seconds

Explanation:

Given the following data;

Initial velocity = 0

Acceleration = 1.1m/s²

Distance = 13m

To find the time, we would use the second equation of motion;

S = ut + ½at²

Substituting into the equation, we have;

13 = 0*t + ½*1.1*t²

13 = 0.55t²

t² = 13/0.55

t² = 23.64

Taking the square root of both sides, we have;

Time, t = 4.862 seconds

Calculate the horizontal force that must be applied to a 1,300 kg vehicle to give it an acceleration of 2.6 m/s² on a level road.

500 N

3,380 N

1,302.6 N

0.002 N

Answers

The answer is 3,380 N

The horizontal force must be applied to a vehicle of mass 1300 kg and of acceleration of 2.6 m/s² will be 3380 N. Hence, option B is correct.

What is Acceleration?

The rate of change in an object's velocity concerning time is known as acceleration in mechanics. The vector quantity of accelerations. The direction of the net force that is acting on an object determines its acceleration.

Since acceleration has both a magnitude and a direction, it is a vector quantity. Velocity is a vector quantity as well.

According to the question, the given values are :

Mass, m = 1300 kg

Acceleration, a = 2.6 m/s²

Force = 1300 × 2.6 m/s²

F = 3380 N.

So, the force applied will be, 3380 N.

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Which is characteristic of uneven growth during late childhood?
a. fast growth of hands and feet
b. increase in hip width
c. widening of the shoulders
d. lengthening of the torso

Answers

Answer:

B

Explanation:

The others are natural growth developments

please help!!! 50 POINTS
1) The diagram below models the energy involved in a reaction that changes methane gas and oxygen into carbon dioxide and water.

The graph shows a certain level of energy of reactants C H2 + 2 O2, which increases on the breaking of bonds as the atoms are separated. The energy is then consumed when the making of bonds decreases the energy of products, C O2 + 2 H2 O, to a level much lower than the energy of reactants. The energy change of negative delta H depicts the exothermic reaction.

Which observations about the energy released in making the bonds are correct?
a) It is greater than the energy absorbed in breaking the bonds. The excess is converted to chemical energy.
b) It is greater than the energy absorbed in breaking the bonds. The excess is converted to thermal energy.
c) It is less than the energy absorbed in breaking the bonds. The excess is converted to thermal energy.
d) It is less than the energy absorbed in breaking the bonds. The excess is converted to chemical energy.

2) Carbon dioxide is an example of a molecule where the component atoms of carbon and oxygen are held together by chemical bonds. Which statement correctly describes the reason for these chemical bonds?
a) The nuclei and electrons of the atoms are attracted to each other.
b) The strong nuclear energy bonds the atoms together.
c) The combination of chemical energy stored in each atom makes the bonds strong.
d) The structure of atoms increases their atomic energy, which creates the bonds.

3) When burning fuel for cooking, the pan and the food absorb energy and heat up. In this process, which form of energy is chemical energy converted into?(1 point)
a) thermal energy
b) atomic energy
c) mechanical energy
d) radiant energy

4) Which of the following statement/s about the energy involved in a chemical reaction is/are correct?
I. The energy stored in chemical bonds is kinetic energy.
II. The total energy is conserved during a chemical reaction.
III. Chemical energy can be converted to other forms of energy.
IV. Energy is needed to both break bonds and form new bonds.
a) III and IV only
b) II and III only
c) II, III, and IV only
d) I only

5) Burning coal results in several energy transformations to generate electricity. Which statement is correct about the chemical energy stored in chemical bonds between atoms when coal is burned?
a) It allows the bonds to form and then break.
b) It helps transform kinetic energy to potential energy.
c) It increases the number of atoms.
d) It converts to thermal energy.

thank you!!

Answers

Answer:

Explanation:

1. It is greater than the energy absorbed in breaking the bonds. The excess is converted to thermal energy.

2. The nuclei and electrons of the atoms are attracted to each other

3. thermal energy

4. II and III only

5. It converts to thermal energy.

When a government pays ranchers to reduce the number of milk cows they have, it is known as a what ?
O Subsidy
O Tax Break
O Productivity Schedule
O Resource Cost

Answers

I say a subsidy because the government is controlling how many cows they have.

Answer:

Subsidy

Explanation:

When a government pays ranchers to reduce the number of milk cows they have, it is known as a subsidy.

Subsidy is an incentive given by a government in form of cash or raw materials in order to achieve a common goal.

It might be to increase production of certain commodities or phase out a particular product in the market.

The subsidy helps in paying part of the production costs

Billy is driving a bumper car for 5 minutes. In this time, Billy crashes into three other cars.

The first car is carrying another small child, the second is carrying a large adult, and the third is empty. Each car is sitting still when Billy hits it at full speed. Place the crashes in order of how much force Billy feels, from smallest to largest.

empty car
large adult
small child
<

Answers

Answer:Its empty car, small child, and then adult.

Explanation:

i took it

Answer:

Its empty car, small child, and then adult.

What are the factors of works?

Answers

Answer:

Explanation:

The seven factors are work load, family life, transportation, compensation policy and benefits, colleagues and supervisor, working environment and working condition and career growth.

A 2.5 –g bullet traveling at 350 m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree’s trunk. What force was exerted on the bullet in bringing it to rest?

Answers

Answer:

A 2.5 g bullet traveling at 350 m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree's trunk. What is the initial kinetic energy of the bullet? 153.125 J Correct: Your answer is correct.Jan 8, 2020

Explanation:

The specific heat capacity of oxygen is 918 J/kg °C. That means that it takes 918 J of energy to raise _____ kg of oxygen by 1°C. What number completes the sentence?

Answers

Answer:

In this case, the specific heat capacity of oxygen is 918 J/kg °C. That means that it takes 918 J of energy to raise 1 kg of oxygen by 1°C.

Explanation:

Specific heat is the amount of heat required to raise the temperature of a unit mass of a substance by one degree. Specific heat is also known as specific heat capacity or specific heat capacity.

In other words, it is defined as the amount of energy that we must contribute to increase its temperature.

The specific heat or heat capacity of a certain body is called by the letter "c".

The expression to calculate the specific heat of a substance is:

c = Q / m.Δt

where Q represents the heat energy transfer between the system and its environment, m the mass of the system and Δt the temperature variation to which it is subjected.

In this case, the specific heat capacity of oxygen is 918 J/kg °C. That means that it takes 918 J of energy to raise 1 kg of oxygen by 1°C.

The number that completes the sentence is 1 kg

What is specific heat capacity?

Specific heat capacity is the amount of heat required to raise 1kg of the substance by 1 °C or 1 K. The S.I unit of specific heat capacity is J/kg°C

The substance in question is oxygen.

From the question,

If the specific heat capacity of oxygen is 918 J/kg°C, It means that it takes 918 J of energy to raise 1 kg of oxygen by 1°C.

Hence, The number that completes the sentence is 1 kg.

Learn more about specific heat capacity here: https://brainly.com/question/21406849

Describe how sound at a concert is different from the front row and the back.

Answers

In the front is where the bass of everything comes from so it’s generally louder up there and toward the back there’s not as much bass to the music more just hearing the singer and other people screaming

Which electromagnetic waves have the shortest wavelength and the highest frequency?

waves

Answers

Answer: Gamma rays (violet) have the shortest wavelengths and the highest frequencies.

Explanation: The wavelength of the gamma rays is less than 0.01 nanometers. The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength.

The electromagnetic waves have the shortest wavelength and the highest frequency is Gamma rays (violet).

What are gamma rays?

Gamma radiation, from gamma rays (γ), is a type of electromagnetic radiation usually produced by radioactive elements. Gamma rays, due to their high energy, are able to penetrate matter more deeply than alpha or beta radiation.

Gamma ray is a type of high frequency electromagnetic radiation usually produced by radioactive elements.

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A 4 kg object is moving at a speed of 5 m/sec. How much kinetic energy does the object have? A. 10 joules B. 20 joules C. 50 joules D. 100 joules

Answers

Answer:

A. 10 joules

Explanation:

Given parameters:

Mass of object  = 4kg

Speed  = 5m/s

Unknown:

Kinetic energy of the the object  = ?

Solution:

Kinetic energy is the energy due to a moving body.

So;

           mathematically;

    K.E  = [tex]\frac{1}{2}[/tex] x m v²

m is the mass

v is the velocity

  K.E  =  [tex]\frac{1}{2}[/tex]  x 4 x 5  = 10J

The kinetic energy of the given moving object is 50 J. The  Kinetic energy of an object is the energy due to its motion.

What is Kinetic energy?

The  Kinetic energy of an object is the energy due to its motion. It can be given as

[tex]KE = \dfrac 12 mv^2[/tex]

Where,

[tex]m[/tex] - mass = 4 kg

[tex]v[/tex] - velocity =  5 m/sec.

Put the values in the formula,

[tex]KE = \dfrac 12 4 \times 5^2\\\\KE = 50 \rm \ J[/tex]

Therefore, the kinetic energy of the given moving object is 50 J.

Learn more about  kinetic energy:

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Explain how are position time, velocity, and acceleration related to each
other?

Answers

I had this question before I think was it A or B.

Plz help 200 pts


In the movie Black Panther, Wakanda's economy focuses on the production and use of a fictional metal known as vibranium, which has amazing chemical and physical properties. If this metal actually existed, where do you think the metal would be placed in the periodic table? What would be the elemental symbol?​

Answers

Answer:

We just know that the metal is called Vibranium.

to place something is the table   we need to know its atomic number and its mass. so if we can get that we can ans it.

Explanation:

Your attitude has no influence on how regularly you exercise.

Answers

Answer:

False

Explanation:

Answer: False

Explanation:

correct on edge✅

During the previous year, Zach's weather station measured 0.8 yards of rain. Express this amount in cm.​

Answers

Answer:

73.152cm

Explanation:

We have been given:

          0.8yards of rain

Problem, convert to cm = ?

Solution:

The problem deals with the conversion from one length dimension to another.

 So:

           1 yard   = 91.44 cm

     So   0.8 yards  = 0.8 x 9.44 = 73.152cm

The solution to this problem is 73.152cm

2. If a spring has a spring constant of 400 N/m, how much elastic potential
energy is stored when the spring is stretched by 0.25 m?​

Answers

Answer:

The kinetic energy of a spring is equal to its elastic potential energy.

The elastic potential energy is 12.5N-m or 12.5 Joules.

Explanation:

[tex] = \frac{1}{2} k {x}^{2} \\ = \frac{1}{2} (400)( {.25)}^{2} \\ = 12.5[/tex]

A monkey increases its gravitational potential energy by climbing to the top of a tree. What happens to that potential energy if he climbs back down halfway?

Group of answer choices


It would decrease by three fourths.


It would double.


It would remain the same.


It would decrease by half.

Answers

It would decrease by half

Answer:

it would decrease by half.

Explanation:

Plants make food through photosynthesis, and photosynthesis takes place mostly in plant leaves, but when plants lose their leaves in the winter, they do not die. This is evidence that A. someone gives the plants food every day. B. plants can use heat in the ground to make food. C. plants store food for later use. D. photosynthesis also takes place in plant roots.

Answers

Answer:

The answer is not B or D because they need light co2 and water to make their food so B and D are out. and unless someone is walking during winter to feed it. It will not be A so the answer is C.

Explanation:

Plants can use heat in the ground to make food in winters. Plants make food through photosynthesis, and photosynthesis takes place mostly in plant leaves, but when plants lose their leaves in the winter, they do not die. Thus, the correct option is B.

What is Photosynthesis?

Photosynthesis is the process through which plants use the sunlight, which is trapped in the chlorophyll pigment present in the chloroplast of cells to convert water, and carbon dioxide to produce oxygen gas and energy in the form of sugar (carbohydrate).

Photosynthesis is the process in which energy transformation takes place. In this process, light energy from the sun is converted into chemical energy that is in the form of carbohydrate in the leaves of the plant.

Therefore, the correct option is B.

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what are the rocky planets? theres more in the attachment
HELP ME PLS

Answers

Answer:

Explanation:

The rocky planets include Mercury, Venus, Earth, and Mars. they are made up of rocks and metals and have solid surfaces.They are the closest four planets to the Sun. The gas giants are  Neptune, Uranus, Saturn, and Jupiter. they are further from the sun and are in the outer part of the solar system. I hope this helps!

a dog running across the field at a speed of 1.2 m/s with a mass 3.2 kg

Answers

Explanation:

=0.5×3.2×1.44

=2.304J

I hope it's helpful!

HELP PLEASE I NEED AN A FOR THIS TO PASS

Answers

Answer:

D: The velocity increases during the time periods labeled A and C

Explanation:

Since gravity pulls us down to Earth, it will pull down the ball faster when the ball is falling.

What are two main types of exercise???

Answers

Answer:

Endurance exercise and Strength exercise

Explanation:

Answer:

Aerob exercise and strength exercise

Explanation:

what is an amplitude??

Answers

Answer:

maximum extent of a vibration or oscillation measured from the position of equilibrium.

Answer:

the maximum displacement or distance moved by a point on a vibratng body or wave measured from its equilibrium position. it is equal to one-half lenght of the vibration path.

Explanation:

hope it helps

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n the poem, The Battle of Blenheim, Wilhelmine stated that the battle was a wicked thing while Kaspar said it was a great victory. Which position do you support? Do you think the battle was a wicked thing or a great victory? Why do support this position? Use evidence from the text to support your answer. PLEASE HELP FASTTTName two of the European countries who wanted Sub-Saharan Africa territory. please explain your answer( btw me and my family ahre an account so if u see omebody answer an question without the answer its my family lol) Task 6Jeff's weekly salary equals a commission of hissales plus a basic amount. If his sales are $849. heearns $417.92. If his sales are $1011, he earns$430.88.yoQ: Find Jeff's total earnings if his sales are$948. A carpenter worked 10 weeks on a particular job, 51/2 days per week and 7 3/4 hours per day. How many hours did the carpenter work on the job? The amount of time workers spend commuting to their jobs each day in a large metropolitan city has a mean of 70 minutes and a standard deviation of 20 minutes. Assuming nothing is known about the shape of the distribution of commuting times, what percentage of these commuting times are between 30 and 110 minutes which subatomic particle of an atom moves around the nucleus A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 6.50kg of water at 24.2C. During the reaction 88.2kJ of heat flows out of the flask and into the bath.Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is 4.18Jg1K1. Be sure your answer has the correct number of significant digits. What are the steps, in the correct order, to write and solve an equation? 1. Write an equation. 2. Identify the variable. 3. Identify the operation. 4. Solve the equation.5. Check the solution.1. Write an equation.2. Solve the equation.3. Check the solution.1. Identify the variable. 2. Write an equation.3. Solve the equation.1. Identify the variable.2. Identify the operation.3. Write an equation.4. Solve the equation.5. Check the solution. the ration of girls to boys in a movie club was 5:4 there were 24 boys how many girls were there in the club describe one way in which rocks formed on Mount Moran. Bilang nahalal na mga opisyales ng "Filipino Club", kayo ay nagtakdang isang seminar-workshop tungkol sa "Maayos na Pamumuno sa IsangSamahan" Pumili ng inyong magiging tagapagsalita at ipakilala siya gamitang iyong nasulat na bionote tungkol sa kanya. 10 yd?6 yd13 yd8 yd4 yd The defeat of Montreal took place in the Plains of Abraham.True False The difference betwen a biome and an ecosystem isO a biome is all ecosystems of one kindan ecosystem is all biomes of one kinda biome is all communities of one kindthe biosphere includes all biomes CHARGES FOR 2.5 HOUR PARKING= $6CHARGES FOR 1 MINUTE PARKING=? What is the complementary strand for the DNA sequence below? TAC CAG CCA Are -125 degrees and 225 degrees coterminal angles ? Arrange the sentences of the paragraph proof in the most logical order.Given: GH has a length of 16 cm.Prove: If point 7 is the midpoint of G, then GT = 8 cm.1. If point 7 is the midpoint of GH, then GT= TH by the definition of midpoint.2. Assume that I is the midpoint of GH and that GT+8 cm. Let GT= 5 cm.3. GH= GT+TH by the segment addition postulate. Therefore, GH= 5 cm + 5 cm = 10 cm. GH= 10 cm and GH = 16 cm,which is a contradiction.4. If GT= 8 cm, then a contradiction occurs. Therefore, the original statement is true by proof by contradiction.A 1, 2, 3, 4B. 2, 1, 3,4C. 2, 4, 1,3D. 4, 3, 1, 2 NEED HELP Based on the cell theory, which of the following is true? (5 points)All cells are too small to be seen.All living things are made of cells.Small organisms have more cells than large organisms.Large organisms have larger cells than small organisms.5. (04.02 LC) Anton Leeuwenhoek devised a primitive microscope to observe a sample of his tooth scrapings. How did this help contribute to cell theory? (5 points)It helped to show that cells cannot function independently.It helped to show that some bacteria can swim like fish.It helped to show that some bacteria are just one cell.It helped to show that cells can be created from thin air.6. (04.02 MC) A scientist eliminated all living organisms in a jar of soup by heating it. He then left the soup jar uncovered for some days. After a few days, he saw molds in the soup. What most likely formed the mold? (5 points)Mold spores present around the jarNonliving matter in the environmentWater molecules in the soupGlass particles in the jar7. (04.02 LC) A scientific theory is different than the way we use the word theory in common speech. Which of the following describes the way the term theory is used in everyday life? 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