The amount of force equal to 1 kg•m/s2 defines what SI unit?

Newton's third law of motion states that every action has an equal and opposite reaction. Similarly, when a rocket moves, it exerts a force on the gases to propel them backward. This in turn exerts an equal and opposite reaction force to move the rocket forward.

Answer:foucovfirfvuhivufhijifs

The process that water redeposit into a lake in the form of rain is precipitation.

Water runoff occurs when there is more water than land can absorb.

The water flows across the surface of the land and into nearby creeks, streams, or lakes.

Runoff can come from both natural processes and human activity.

When rain falls to the earth from clouds and runs downhill into rivers and lakes.

During evaporation, the water turns from liquid into gas, and moves from oceans and lakes into the atmosphere where it forms clouds.

Precipitation is any liquid (rain) or frozen water that forms in the atmosphere and falls back to the Earth, for example it could fall on land or into lakes and rivers.

Thus,  the process that water redeposit into a lake in the form of rain is precipitation.

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Two waves have the same amplitude but they can have different frequencies. The wave with a higher frequency will have greater energy. Therefore, the given statement is correct.

The frequency of electromagnetic waves or any wave can be described as the number of oscillations in one second. The frequency can be represented as per second or hertz.

The wavelength of the wave can be defined as the distance between two crests or troughs on a wave that is separated by a distance known as wavelength. The wavelength of the waves is expressed in meters.

The relationship between frequency (ν) and energy of the wave:

E = hν

The frequency of the waves has a direct relation with the energy of the waves. Therefore, the wave which has a higher frequency will carry greater energy whether they have the same amplitude.

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The angle between the two vectors is 126° 52' 11".

The given parameters;

vector A = 3.00i + 1.00j

vector B = 1.00i + 3.00j

The angle between the two vectors is calculated as follows;

\(cos \theta = \frac{A.B}{|A|.|B|}\)

The dot product of vectors A and B is calculated as;

A.B = ( 3i + 1j ) . ( 1i +3j )

      = ( 3 × 1 ) + ( 1  × 3 )

      = 3 + 3

      = 6

The magnitude of vectors A and B is calculated as;

|A|  = \(\sqrt[]{3^2 + 1^2} = \sqrt[]{10} \\\)

|B| = \(\sqrt[]{1^2 + 3^2} = \sqrt[]{10} \\\)

The angle between in two vectors is calculated as;

\(Cos \theta = \frac{6}{\sqrt[]{10}\sqrt[]{10} } \\\\Cos \theta = \frac{6}{\ 10 }\\\\Cos \theta = 0.6\\\\\theta = cos^-^1 (0.6)\\\\\theta = 126\\\)

Therefore, the angle between the two vectors is 126° 52' 11".

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The magnitude of the velocity is 2 m/s, and the direction is south, which is opposite to April's initial position. Option D.

To determine April's velocity, we need to calculate the displacement and divide it by the time taken.

April's initial position is 5 m north of her front door, and her final position is 3 m south of her front door. The displacement is the difference between the final and initial positions, which in this case is:

Displacement = Final position - Initial position

Displacement = (-3 m) - (5 m)

Displacement = -8 m

The negative sign indicates that the displacement is in the opposite direction of her initial position. Since we are interested in the magnitude of the velocity, we disregard the negative sign.

Now, we divide the displacement by the time taken:

Velocity = Displacement / Time

Velocity = (-8 m) / (4 s)

Velocity = -2 m/s

The negative sign indicates that the velocity is in the opposite direction of her initial position, which is north.

Therefore, the correct answer is option D: 2 m/s south.

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The Big Bang was not an explosion that flung debris throughout space. Rather, it was an event that marked the beginning of the universe as we know it.

The universe was created from a hot and dense state, and it rapidly expanded and cooled over time.

The Big Bang theory is the prevailing cosmological model for the observable universe, meaning it describes how the universe evolved after its initial creation. It states that the universe started out as a singularity, a point of infinite density and temperature, and it expanded and cooled from there.

As the universe expanded, it cooled down enough for subatomic particles to form, followed by atoms and eventually stars and galaxies. The universe is still expanding today, and we can observe this expansion through a number of astronomical observations.

In summary, the Big Bang was not an explosion that flung debris throughout space, but rather an event that marked the beginning of the universe and its subsequent evolution over time.

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Answer:

Shed

Explanation:

Snakes have to shed, or else their skin will become really crusty and flaky. Especially the ones that live in a desert. The sun destroys their skin, as it isn't as strong as ours.  

Answer:

I think the answer should be C. I am not sure

Answer: c

Explanation: im pretty sure it’s C, because thermodynamics is the movement of heat. Kinda like an EMF Reader. (Electric Magnetic Feild reader). It’s complicated to explain how it works, but hey it works!

We will have that the picture that shows the highest average kinetic energy is image B.

Answer:be narsanda

Explanation: 456

A balloon expands as you blow into it because of the increase in pressure inside the balloon caused by the air you are blowing into it. When you blow air into a balloon, the air molecules inside the balloon are pushed closer together, increasing the pressure inside the balloon. As the pressure inside the balloon increases, the balloon stretches and expands to accommodate the extra air.

The balloon is made of a flexible material, such as rubber or latex, which allows it to stretch and expand as the pressure inside it increases. The balloon's material has elastic properties, which means that it returns to its original shape when the pressure is released.

The process of blowing air into a balloon can be compared to filling a tire with air. As you inflate a tire with a pump, the air molecules inside the tire are pushed closer together, increasing the pressure inside the tire. This causes the tire to expand and become larger, until it reaches the desired pressure.

In summary, a balloon expands as you blow into it because of the increase in pressure inside the balloon caused by the air you are blowing into it. The balloon's material has elastic properties, which allows it to stretch and expand as the pressure inside it increases.

Researchers begin their study by identifying the rock type and then dating the meteorite

Explanation:

.

Answer:

B

Explanation:

testes produce testosterone for producing sperm

Answer:

The answer is electrons.

The conclusion that you might arrive at is that the speed of the car affects the gas mileage.

We know that an experiment is the only way that we can be able to establish cause and effect relationship. We know that the speed would affect the consumption of the gas. By varying the speed of the car, we can be able to obtain the effect that it has on the mileage.

Thus, the conclusion that you might arrive at is that the speed of the car affects the gas mileage.

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Answer:

14metre squared

Explanation:

acceleration=force/mass

Explanation:

Exoplanets are very hard to see directly with telescopes. They are hidden by the bright glare of the stars they orbit. So, astronomers use other ways to detect and study these distant planets.

Exoplanets are difficult to detect because they are a star 'wobbles' as it orbits the center of mass, changing the wavelength of light it emits.

Option b) Stomach is most likely to have the most muscles.

There are five main muscles in stomach pyramidalis, rectus abdominus, external obliques, internal obliques, and transversus abdominis.

Muscles circulate frame parts by contracting after which relaxing. muscular tissues can pull bones, however, they cannot push them to return to their unique role. so they paintings in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.

The muscle groups that circulate our frame elements are called skeletal muscles, and they're a form of striated muscle. We will actively manipulate those with our brains. another sort of striated muscle is those that maintain our hearts pumping, which we are not able to actively control.

Muscles pull at the joints, allowing us to move. a couple of muscular tissues are used for any sort of motion of a bone. Although we are sitting flawlessly nevertheless, muscle tissues at some point in the frame are constantly shifting.

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Answer:

Explanation:

For entropy change the formula is

ΔS = ΔQ / T

ΔQ = Δ H

ΔS = Δ H / T

Given

Δ H = + 162.8 kJ

We can take equilibrium temperature as average temperature of the whole process

So, T = 273 + 87 = 360 K

ΔS = Δ H / T

=  162.8 kJ  / 360

= +  0.508 kJ / K .

When the magnitude of the heat transfer for the process is 162.8 kJ, Then the entropy change for the mixing process, in kJ/K is = + 0.508 kJ / K

For The entropy change, the formula is

Then ΔS = ΔQ / T

After that ΔQ = Δ H

Then ΔS = Δ H / T

Given as per question are:

Then Δ H = + 162.8 kJ

Now We can take equilibrium temperature as average temperature of the whole process are:

So, T is = 273 + 87 = 360 K

Then ΔS = Δ H / T

After that = 162.8 kJ / 360

Therefore, = + 0.508 kJ / K.

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The core of a highly evolved high mass star, depending on the type of stellar remnant, can be as small as the size of the Earth (for a white dwarf) or as compact as about 10 kilometers (for a neutron star).

The core of a highly evolved high mass star is typically a compact object known as a stellar remnant. There are two main types of stellar remnants that can form depending on the mass of the star: white dwarfs and neutron stars.

A white dwarf is the remnant of a star with a mass up to about 8 times that of the Sun. Its core is about the size of the Earth, which is much smaller compared to the original size of the star.

On the other hand, a neutron star is formed when a star with a mass greater than about 8 times that of the Sun undergoes a supernova explosion. The core of a neutron star is incredibly dense and compact, with a radius typically on the order of 10 kilometers (6.2 miles). Neutron stars are composed primarily of tightly packed neutrons and are extremely massive.

In summary, the core of a highly evolved high mass star, depending on the type of stellar remnant, can be as small as the size of the Earth (for a white dwarf) or as compact as about 10 kilometers (for a neutron star).

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The formula is used to determine the work done by a force: work = force x distance. It is necessary to multiply the force by the distance moved by the object in the direction of the force. The force is expressed in newtons, and the distance is expressed in meters.

To find the work done by the force in moving an object 10 meters, it is necessary to calculate the area beneath the graph of the force function between x = 0 and x = 10. The area beneath the graph corresponds to the work done by the force moving the object. To find the area beneath the graph, you can split it into small rectangles and sum their areas. The width of each rectangle is the distance between the two consecutive points on the x-axis, and each rectangle's height is the force's value at that point. The work done by the force can be expressed as follows: work = force x distance work = area beneath the graph of the force function between x = 0 and x = 10. The area beneath the graph can be calculated using the trapezoidal rule or Simpson's rule, but the exact method depends on the graph's shape.

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Answer:

After three half-lives, the fraction of the original sample that would remain is 1/8 or 0.125.

This is because each half-life reduces the amount of radioactive material by half. So, after one half-life, there will be 1/2 of the original amount remaining. After two half-lives, there will be 1/4 of the original amount remaining. After three half-lives, there will be 1/8 of the original amount remaining.

To put this in perspective, let's say we start with 100 radioactive atoms. After one half-life, we would have 50 atoms remaining. After two half-lives, there would be 25 atoms remaining. And after three half-lives, there would be 12.5 atoms remaining.

This exponential decay is the basis for radioisotope dating methods, where scientists can use the remaining fraction of a sample to determine how long ago it was formed or last exposed to sunlight or heat, amongst other things.

Electrical conductors exist created up of metals such as copper, aluminum, etc. These metals exist utilized to create wires. Most wires exist created out of copper because it produces electricity with high flexibility and extremely little resistance.

Therefore, the correct answer is option b) a metallic conductor with free electrons surrounded by a rubber insulator lacking free electrons.

"A conductor, or electrical conductor, exists a substance or material that authorizes electricity to rush through it. In a conductor, electrical charge carriers, usually electrons or ions, shift smoothly from atom to atom when voltage exists used."

"Electricity exists both a fundamental aspect of nature and one of the most widely used structures of energy. The electricity that we use exists as a secondary energy source because it exists created by transforming primary sources of energy such as coal, natural gas, nuclear energy, solar energy, and wind energy, into electrical power."

Therefore, the correct answer is option b) a metallic conductor with free electrons surrounded by a rubber insulator lacking free electrons.

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Answer:

B - a metallic conductor with free electrons surrounded by a rubber insulator lacking free electrons

Explanation:

Energy is conserved as the block slides down because kinetic energy is converted to heat energy.

We are looking at the principle of the conservation of energy. We know that the principle of the conservation of energy states that energy can neither be created nor destroyed but it can be converted from one form to another.

Now we know that the energy of the block would remain constant. Given the fact that energy is not created or destroyed, we can see that as the block is sliding down, the block would be loosing energy thus it would become slower. This is because of the fact that friction is working against the movement of the block and the energy that is lost is converted to heat.

Thus we can say that the energy is converted to heat as the the block is slowing down thus energy is conserved.

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Answer:

B

Explanation:

The dot product is 25, the angle is \(\theta = cos^{-1} \frac{25}{\sqrt{35} \times \sqrt{21}}\), the cross product is 1i + (-6)j + (-7)k, and the area of the parallelogram spanned by vectors A and B is \(\sqrt{86}\).

Given,

A = 5i + 3j + k

B = 4i + j + 2k

i. Dot Product (A · B):

The dot product of two vectors A and B is given by the sum of the products of their corresponding components.

\(A.B = (A_x \times B_x) + (A_y \times B_y) + (A_z \times B_z)\\A.B = (5 \times 4) + (3 \times 1) + (1 \times 2) \\= 20 + 3 + 2 \\= 25\)

ii. Angle between vectors A and B:

The angle between two vectors A and B can be calculated using the dot product and the magnitudes of the vectors.

\(cos\theta = (A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} ((A.B) / (|A| \times |B|))\\A = \sqrt{(5^2 + 3^2 + 1^2)} =\\ \sqrt{35}\\B = \sqrt{(4^2 + 1^2 + 2^2)} \\= \sqrt{21}cos\theta = \frac{(A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} \frac{25}{\sqrt{35} \times \sqrt{21}}}\)

iv. Cross Product (A × B):

The cross product of two vectors A and B is a vector that is perpendicular to both A and B and its magnitude is equal to the area of the parallelogram spanned by A and B.

\(A\times B = (A_y \timesB_z - A_z \timesB_y)i + (A_z \timesB_x - A_x \timesB_z)j + (A_x \times B_y - A_y \times B_x)k\\A\times B = ((3 \times 2) - (1 \times 1))i + ((1 \times 4) - (5 \times 2))j + ((5 \times 1) - (3 \times 4))k\\= 1i + (-6)j + (-7)k\)

Area of the parallelogram spanned by vectors A and B:

The magnitude of the cross product A × B gives us the area of the parallelogram spanned by A and B.

Area = |A × B|

Area of the parallelogram spanned by vectors A and B:

Area = |A × B| =

\(\sqrt{(1^2 + (-6)^2 + (-7)^2}\\\sqrt{1+36+49\\\\\sqrt{86}\)

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Answer:

Viruses, bacteria, fungi, protozoa, helminths(worms)