Why has the earth experienced natural climate changes?.
Answers
Natural climate changes occur as a result of different factors. The earth has undergone natural climate changes for several reasons, some of which are still being studied. These natural climate changes have been in effect since the formation of the earth itself.
Some of the major factors that cause natural climate change include volcanic eruptions, changes in the earth's orbit, and the greenhouse effect.
Volcanic eruptions: Volcanic eruptions are known to cause climate change. The volcanoes emit a lot of carbon dioxide, sulfur dioxide, and other gases into the atmosphere, causing the global temperature to drop. Volcanoes are capable of emitting large quantities of ash and sulfur dioxide into the atmosphere. These particles can block the sun's rays and cause the earth's temperature to drop.
Changes in the Earth's orbit: The earth's orbit is not circular, it is elliptical. As a result, the earth moves closer or farther from the sun at various times of the year. These changes are known to cause climate change. When the earth is closest to the sun, it receives more energy from the sun, causing temperatures to rise. Similarly, when the earth is farthest from the sun, it receives less energy from the sun, causing temperatures to drop.
The Greenhouse Effect: The greenhouse effect is a natural process that warms the earth's surface. It occurs when certain gases, such as carbon dioxide, water vapor, and methane, trap heat in the atmosphere. These gases are known as greenhouse gases. They are essential for life on earth.
These are the three major factors that cause natural climate changes. Natural climate changes are inevitable, and they can have significant consequences. The changes in climate can affect ecosystems, weather patterns, and food supplies, among other things.
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Related Questions
two identical cylindrical vessels with their bases at the same level each contain a liquid of density 1.17 g/cm3. the area of each base is 2.94 cm2, but in one vessel the liquid height is 0.906 m and in the other it is 1.50 m. find the work done by the gravitational force in equalizing the levels when the two vessels are connected.
Answers
The work done by the gravitational force in equalizing the levels when the two vessels are connected is 0.03733 J.
The work done by the gravitational force in equalizing the levels when the two vessels are connected can be found using the formula:
Work = force x distance
where force is the weight of the liquid and distance is the difference in height between the two vessels. The weight of the liquid in each vessel can be calculated as the product of the volume and density of the liquid, and the difference in height can be found by subtracting the height of the lower vessel from the height of the higher vessel.
The weight of the liquid in each vessel can be calculated as:
Weight = density x volume x gravity
where density is 1.17 g/cm³, volume is the product of the area of the base and height of the liquid, and gravity is 9.81 m/s².
For the vessel with a liquid height of 0.906 m, the volume can be calculated as:
Volume = area of base x height of liquid = 2.94 cm² x 0.906 m = 0.00266244 m³
So, the weight of the liquid in this vessel is:
Weight = 1.17 g/cm³ x 0.00266244 m³ x 9.81 m/s² = 0.031105 N
Similarly, for the vessel with a liquid height of 1.50 m, the volume can be calculated as:
Volume = area of base x height of liquid = 2.94 cm² x 1.50 m = 0.00441 m³
So, the weight of the liquid in this vessel is:
Weight = 1.17 g/cm³ x 0.00441 m³ x 9.81 m/s² = 0.051456 N
The difference in height between the two vessels is:
Height difference = 1.50 m - 0.906 m = 0.594 m
Therefore, the work done by the gravitational force in equalizing the levels when the two vessels are connected is:
Work = force x distance = (0.051456 N + 0.031105 N) x 0.594 m = 0.03733 J
Therefore, the work done by the gravitational force in equalizing the levels when the two vessels are connected is 0.03733 J.
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What is the frequency of ocean waves that have a speed of 18 m/s and wavelength of 50 m/s?
Answers
Answer:
What is the frequency of ocean waves that have a speed of 18 m/s and wavelength of 50 m/s?
0.36hz
The frequency of the wave is 0.36 Hz.
What is meant by frequency of a wave ?Frequency of a wave is defined as the number of oscillations completed by the wave in one second.
Here,
Speed of the wave, v = 18 m/s
Wavelength of the wave, λ = 50 m
We know that, the equation for the speed of a wave is given as,
v = fλ
where f is the frequency of the wave.
Therefore, frequency,
f = v/λ
f = 18/50
f = 0.36 Hz
Hence,
The frequency of the wave is 0.36 Hz.
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Complete the following concept map using the following terms: generator, back-EMF, and Lenz’s law.
Answers
When a generator is turned, it produces a voltage that creates a current flow. However, as the current flows through the coils of the generator, it creates a magnetic field that opposes the original magnetic field.
According to Lenz's law. This opposition to the magnetic field is known as back-EMF, which can reduce the overall voltage produced by the generator.
To complete the concept map using the terms generator, back-EMF, and Lenz's law, you can follow these steps:
1. Place the term "generator" at the center of the concept map. Generators are devices that convert mechanical energy into electrical energy.
2. Draw an arrow from the generator to a box labeled "back-EMF." Back-EMF, or back electromotive force, is the voltage that opposes the change in current within a generator.
3. Next, draw another arrow from the back-EMF box to a box labeled "Lenz's law." Lenz's law is a fundamental principle that explains the origin of back-EMF. It states that the direction of the induced current will always be such that it opposes the change in magnetic field that created it.
4. Finally, draw an arrow from Lenz's law back to the generator. This connection illustrates the relationship between Lenz's law and the generator's functioning, as Lenz's law is essential in maintaining the balance between input mechanical energy and output electrical energy.
By connecting these terms, you have created a concept map that illustrates the relationship between a generator, back-EMF, and Lenz's law.
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How does the theory of plate tectonics support the theory of seafloor spreading?
Answers
The theory of plate tectonics states that the Earth's outer shell is made up of several large, rigid plates that move and interact with each other. These plates can move away from each other, towards each other, or past each other.
The theory of seafloor spreading is a specific aspect of plate tectonics that explains how new oceanic crust is created at mid-ocean ridges, where plates move away from each other. As the plates move apart, magma rises up from the mantle and cools, forming new crust on the seafloor. Over time, this process can create a long chain of underwater mountains, or mid-ocean ridge.
The theory of plate tectonics supports the theory of seafloor spreading because it provides a mechanism for how the plates move and interact with each other, which ultimately leads to the creation of new oceanic crust at mid-ocean ridges. In other words, plate tectonics provides a framework for understanding how the Earth's outer shell behaves and how the continents and oceans have evolved over time.
what does have a correct observation of the photoelectric effect experiment and supports the quantum mechanical atomic model
Answers
The only way to understand the photoelectric effect is through the quantum theory of radiation.
Explain about the photoelectric effect?
When a substance absorbs electromagnetic radiation, the photoelectric effect, a phenomenon, occurs where electrically charged particles are emitted from or within the material. The phenomenon is frequently explained as the release of electrons from a metal plate when light strikes it.
We now employ solar panels, electric eye door openers, light meters for photography, and photostatic copying thanks to applications of the photoelectric effect.
There is no lag time, photoelectrons' kinetic energy is independent of the intensity of incident radiation, and there is a cut-off frequency, which are three significant properties of the photoelectric effect that cannot be described by classical physics.
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1) Billy bought 1 board game, 2 action figules and 1 toy car at the toy store. The board game cost $5.85, the action
figures cost $4.45 a piece and the toy car was $5.15. If he paid with a twenty dollar bill, how much change should she
get back?
Answers
Let’s say board game is represented by b, the action figures are represented by a, and the toy car is represented by c.
5.85b+4.15a+5.15c
Insert the amount of each
5.85(1)+4.15(2)+5.15(1)
Adding these together gives a total of $19.30.
To find what change he gets,
20-19.30= 0.70
$0.70 back.
Hope this helps!! :)
How much work is done in the vertical direction if 125 N of force is needed to hold an object at shoulder height as a person walks 2 m forward
Answers
Work is the product of force multiplied by the distance moved, but since the distance moved in the vertical direction is zero
Work Done = 0 joules
Given data
Force = 125N
Horizontal Distance = 2 m
Vertical distance = 0 m
Formula for workWork = Force * Distance
Solution
substitute the given information
Work Done in the horizontal direction= 125*2
Work Done = 250 Joules
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If it took Beth 2 hours to drive her truck 60 miles, what was her average speed?
Explain, using words, the steps you took to calculate Beth's average speed.
What are some objects that have faster or slower average speeds than Beth's truck?
Answers
where does the potential energy of rocket goes when it escape from the influence of the earth
Answers
The potential energy of a rocket increases when its escapes from the influence of the earth. It increases when it escapes the earth's boundary.
What is escape speed?Escape velocity or escape speed is the minimum speed required for a free, non-propelled object to escape from the gravitational pull of the main body and reach an infinite distance from it in celestial physics.
It is commonly expressed as an ideal speed, neglecting atmospheric friction.
If a spacecraft is launched from the moon at the escape speed of the earth then the value of escape speed will be the difference in both the velocities.
An object's height above the zero position directly relates to its gravitational potential energy.
The kinetic energy of motion is converted into gravitational potential power as your rocket ascends.
The rocket possesses gravitational potential energy as it climbs because it is becoming farther away from the Earth's surface, much as a positive and negative charge moving apart.
The potential energy of a rocket increases when its escapes from the influence of the earth. It increases when it escapes the earth's boundary.
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The area around an electric charge that experiences the force exerted by the electric
charge.
electric field
electric force
electric poles
electric charge
Answers
because:
It's the region of space in which an electric charge will experience a force.
A corporation issued 210 shares of its $5 par value common stock in payment of a $2,900 charge from its accountant for assistance in filing its charter with the state. The entry to record this transaction will include:
Answers
The entry to record the transaction of a corporation issuing 210 shares of its $5 par value common stock in payment of a $2,900 charge from its accountant for assistance in filing its charter with the state would include the following:
Debit: Organization Costs Expense (or Professional Fees Expense) - $2,900
Credit: Common Stock (Par Value) - $5 x 210 shares - $1,050
Credit: Additional Paid-in Capital (or Paid-in Capital in Excess of Par Value) - $2,900 - $1,050 = $1,850
Explanation:
The debit to Organization Costs Expense (or Professional Fees Expense) records the expense incurred for the accountant's assistance in filing the charter.
The credit to Common Stock accounts for the par value of the shares issued. In this case, it would be $5 multiplied by the 210 shares.
The credit to Additional Paid-in Capital (or Paid-in Capital in Excess of Par Value) accounts for the difference between the total payment made ($2,900) and the par value of the shares issued ($1,050). This represents the amount contributed by shareholders above the par value.
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Based on its location on the periodic table, which element is the best
electrical insulator?
A. Iron (Fe)
O B. Sulfur (S)
O C. Calcium (Ca)
D. Silver (Ag)
Answers
Answer:
B
Explanation:
Nonmetal is better insulator than metals
Answer:
B
Explanation:
Just took the quiz.
Which of the following occurs during meiosis ll?
Choose 1 answer:
A
Crossing over of homologous pairs
B
The separation of sister chromatids
С
The formation of two diploid daughter cells
D
The doubling of genetic information
Answers
Answer:
(b)The separation of sister chromatids
Explanation:
khan academy showed this after getting wrong lol
write 10 names of water sources
Answers
Explanation:
rainfallwater reservoirs pondlakesriveroceanglacierswell ground waterstreamsAcceleration is a change in what quantity Over time?A- speed B- distance C- force D- displacement
Answers
To find
Acceleration is a change in what quantity Over time?
Explanation
Acceleration is defined as the change in velocity with respect to time interval.
Conclusion
The required quantity is
A. speed
a man of mass 60 60 kg, runs up the stairs of total height 5 5 meters in 4 4 seconds. how much power is exerted by the man?
Answers
The power exerted by the man is 735 watts.
To find the power exerted by the man, we need to use the formula for power, which is:
Power = Work / Time
Work is the product of force and displacement, so we can write the formula as:
Power = (Force × Displacement) / Time
We know that the displacement is 5 meters and the time is 4 seconds. To find the force, we need to use the formula for weight, which is:
Weight = Mass × Acceleration
The acceleration in this case is the acceleration due to gravity, which is 9.8 m/s². So the weight of the man is:
Weight = 60 kg × 9.8 m/s² = 588 N
Now we can plug in the values into the formula for power:
Power = (588 N × 5 m) / 4 s = 735 Nm/s = 735 W
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how much potential energy is required to lift the 9000 kg soyuz vehicle from earth's surface to the height of the iss, 400 km above the surface
Answers
Approximately 3.529 x 10¹³ joules of potential energy are required to lift the 9000 kg Soyuz vehicle from Earth's surface to the height of the ISS, which is 400 km above the surface.
ATo calculate the potential energy required to lift the 9000 kg Soyuz vehicle from Earth's surface to the height of the ISS, which is 400 km above the surface, we need to use the following formula:
Potential Energy = Mass x Gravity x Height
where:
Mass = 9000 kg (mass of the Soyuz vehicle)
Gravity = 9.81 m/s² (acceleration due to gravity on Earth)
Height = 400 km = 400,000 m (height of the ISS above Earth's surface)
Therefore, the potential energy required to lift the Soyuz vehicle to the height of the ISS can be calculated as follows:
Potential Energy = 9000 kg x 9.81 m/s² x 400,000 m
Potential Energy = 3.529 x 10¹³ joules
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what is one effective way to calibrate a thermometer
Answers
Calibration can be defined as the way an instrument is adjusted such that the measurement the instrument gives after calibration is precise and accurate.
One effective way to calibrate a thermometer is the use of ice water.
A thermometer can be defined as the instrument used to measure the temperature of a person or a substance.
A thermometer should be calibrated regularly in order to maintain a high level of precision and accuracy.
One of the effective ways to calibrate a thermometer is through the use of ice water.
The steps to calibrate a thermometer are given below:
Get a bowl, place some ice cubes in it and add additional cold water to it. Place thermometer probe between 2 -3 inches deep in the water. For accurate calibration, make sure you prevent the thermometer from touching the sides of the glass. Stir and wait for a few seconds. The thermometer should be properly calibrated when you read the measurements and it says 32°FTo learn more, visit the link below:
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A load weighing 0.3 kg was suspended on the left edge of a homogeneous beam weighing 0.4 kg. At what distance from the left edge it is necessary to establish a fulcrum so that the lever is in balance, if the length of the beam is 70cm,
Answers
The "arm" of the lever is the handle or bar; it is the portion that you push or pull against. The point on which the lever rotates or balances is known as the "fulcrum.
What is a fulcrum and Lever?The pivotal point of the beam is known as the fulcrum. A load is applied at the other end of a lever when an effort is exerted to one end of the lever. A mass will be raised as a result.
Torque is essential to the operation of levers. The point on which the lever rotates or balances is known as the "fulcrum. Your hand's fingers serve as the fulcrum when using a fork. A lever's pivot point serves as an illustration of a fulcrum.To learn more about fulcrum refer to:
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Which of the following is not one of the basic properties by which we classify a subatomic particle?A. massB. spinC. temperatureD. charge (electrical)
Answers
Temperature is not one of the basic properties subatomic particle. The basic properties of a subatomic particle are its mass, spin, charge (electrical), and its interaction with other particles. Option C is Correct.
This means that regardless of how many interactions or reactions occur, the overall electric charge in a system never changes.
When subjected to an electromagnetic field, matter with an electric charge experiences a force. Objects with the same electric charge repel one another whereas those with differing charges attract one another. Electric charge can be positive or negative.
Subatomic particles like electrons and protons are capable of carrying electric charge, and the quantity of these particles in an object determines how much charge it has. Electric charge is conserved, which means that it can only be moved between objects and cannot be created or destroyed.
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For a particular transformer, the voltage E in the circuits is related to the number of windings W of wire around the core by the equation E = 40W. How many windings will produce a voltage of 760 V?
Answers
ANSWER
\(19\text{ windings}\)EXPLANATION
The voltage, E, is related to the number of windings, W, by the equation:
\(E=40W\)To find the number of windings that will produce 760 V, we have to solve for W when E is 760 V. That is:
\(\begin{gathered} 760=40W \\ \Rightarrow W=\frac{760}{40} \\ W=19\text{ windings} \end{gathered}\)That is the answer.
1. A force of ION causes aspring to extend by 20mm. find A.the spring constant of the spring in N/m
B.the extentsion of the spring in N/m
C. the force applied that causes an externos Of 9mm.
Answers
Answer:
F = - k x restoring force for spring constant k
k = F / x = 10 N / .02 m = 500 N / m force and x are in different directions
B. N / m = force / distance given as k
x = F / k = 10 N / 500 N / m = .02 m
C. F = -k x = 500 N / m * .009 m = 4.5 N
How could you increase the kinetic Energy of an object without changing
its mass or gravity? *
Answers
Answer: Height
Explanation:
You could raise it further off the ground.
an industrial load consumes 100 kw at 0.8 pf lagging. if an ammeter in the transmission line indicates that the load current is 200 a rms, find the load voltage
Answers
An industrial load consumes 100 kw at 0.8 pf lagging. if an ammeter in the transmission line indicates that the load current is 200 a rms, the load voltage is 625 volts.
We are provided with information about an industrial load, specifically its power consumption, power factor, and current. Our goal is to determine the load voltage. First, we calculate the apparent power (S) using the formula S = P / PF, where P is the power and PF is the power factor. The power is given as 100 kW (kilowatts), and the power factor is stated as 0.8 (lagging). Dividing 100 kW by 0.8 gives us an apparent power of 125 kVA (kilovolt-amperes). Next, we utilize the relationship between apparent power, voltage, and current. The apparent power (S) is given by the formula S = V * I, where V represents voltage and I represents current. Rearranging the formula, we find V = S / I.
Plugging in the values we have, we substitute 125 kVA for S and 200 A (amperes) for I. Dividing 125 kVA by 200 A, we calculate the load voltage to be 625 V (volts). Therefore, based on the given power consumption of 100 kW at a power factor of 0.8 lagging and an ammeter reading of 200 A rms, we conclude that the load voltage is 625 volts.
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What is a large celestial body that is composed of gas and emits light.
Answers
Answer:
a star
Explanation:
Two football players are running towards each other in a straight line (exact opposite directions). Player A is running at 3.3 m/s and has a mass of 105 kg. Player B is 126 kg. The players collide and their net momentum after the collision is 0 Ns. How fast was Player B running before they collided? QUESTION 2 If the gauge pressure reads 33psi and the ambient pressure is 13psi, what is the absolute pressure? Not enough information to determine. 20psi
46psi
33psi
QUESTION 3 If fluid pressure through an artery is high, that means that more blood volume flows through the artery every second. True False
Answers
Two football players are running towards each other in a straight line (exact opposite directions). Player A is running at 3.3 m/s and has a mass of 105 kg. Player B is 126 kg.
The players collide and their net momentum after the collision is 0 Ns. How fast was Player B running before they collided? The law of conservation of momentum states that in a closed system, the total momentum remains constant. Therefore, the total momentum of both players before collision equals the total momentum of both players after collision. This means: mA * VA + mB * VB = (mA + mB) * V, where VA and VB are the initial velocities of A and B, respectively, and V is their final velocity after the collision (which is 0).
So, we can rearrange the above equation to solve for VB. VB = (mA * VA) / mB Here, mA = 105 kg and VA = 3.3 m/s, and mB = 126 kg. Substituting the values, we get: VB = (105 * 3.3) / 126= 2.75 m/s Therefore, Player B was running at 2.75 m/s before they collided.
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Determine whether the forces are balanced or unbalanced for the free-
body diagram below. *
Answers
Answer:
the answer for your question is that they are unbalanced
Which of these statements did you include in your answer? check all that apply the two main parts of an atom are the nucleus and the electron cloud. the three subatomic particles of an atom are protons, neutrons, and electron
Answers
Both given statements are true. An atom has a nucleus, an electron cloud, and subatomic particles.
There are two main parts of an atom i.e. nucleus (protons + neutrons) and the electron cloud which is composed of three subatomic particles: electrons, protons, and neutrons.
An electron is a subatomic particle having a negative charge on it.
While protons are positively charged particles and are found in the nucleus of an atom due to strong nuclear forces.
On the other hand, a neutron, as the name suggests, is a neutral subatomic particle having no charge at all.
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Superman is off to visit Lois lane. He sees he's late and increases his flying speed. I know he defies the laws of physics anyway, but let's pretend, okay? If our lead-phobic super hero accelerates uniformly from 1210 m/s to 1600 m/s in 0.40 seconds, then what is his rate of acceleration
Answers
Answer:
975 m/s^2
Explanation:
The formula for rate of acceleration is
(Final velocity - intial velocity)/ time taken
If you plug in your data you will get 975 m/s^2
(1600 m/s -1210 m/s )/.4 s = 975 m^2
what is ultrasound ?
Answers
An ultrasound is a scan of a pregnant womens stomach, to see the baby. Typically they do this to see if the baby is healthy and okay.