What do you guys like about school

Answer:

The baseball was falling during 1.733 seconds.

Explanation:

The baseball experimented a free fall, which is a particular case of uniformly accelerated motion, in which object is accelerated by gravity. In this case, we need to determine the time spent by the ball before hitting the ground (\(t\)), measured in seconds, which is determined by the following kinematic formula:

\(t = \frac{v-v_{o}}{g}\) (1)

Where:

\(v_{o}\), \(v\) - Initial and final speeds of the baseball, measured in meters per second.

\(g\) - Gravitational acceleration, measured in meters per square second.

If we know that \(v_{o} = 0\,\frac{m}{s}\), \(v = 17\,\frac{m}{s}\) and \(g = 9.807\,\frac{m}{s^{2}}\), then the time spent by the baseball is:

\(t = \frac{17\,\frac{m}{s}-0\,\frac{m}{s} }{9.807\,\frac{m}{s^{2}} }\)

\(t = 1.733\,s\)

The baseball was falling during 1.733 seconds.

Answer: 6.0 m/s/s

Explanation: If the net force acting on an object is halved, the acceleration of the object will also be halved. Therefore, if the object has an acceleration of 12.0 m/s/s and the net force acting on it is halved, the new acceleration of the object would be 12.0 m/s/s / 2 = 6.0 m/s/s.

Answer:

La fuerza ejercida sobre el piso del elevador hacia abajo es aproximadamente 1,004.075 N

Explanation:

Fuerza = Masa × Aceleración

El peso de la caja = 800 N

La velocidad hacia abajo = 5.0 m / s

Tomando la aceleración debida a la gravedad, g = 9,8 m / s²

La masa del cuerpo, m = 800 N / g = 800 N / (9,8 m / s²) ≈ 81,63 kg

La fuerza ejercida sobre el piso del ascensor durante la aceleración hacia arriba, 'N', se da como sigue;

N = m · g + m · a

a = 2,5 m / s²

∴ N = 81,63 kg × 9,8 m / s² + 81,63 × 2,5 m / s² = 800 N + 81,63 × 2,5 m / s² ≈ 1,004,075 N

La fuerza ejercida sobre el piso del ascensor hacia abajo ≈ 1,004.075 N

Answer: It's D

Explanation:

The maximum wavelength of light capable of dissociating the f–f bond in one molecule of fluorine if the bond energy, or bond dissociation energy, is 157 kJ/mol is 7.625 × 10⁻⁵ meters.

Given:  

Bond dissociation energy = 157 kJ/mol.

we know,

Avogadro's number = 6.023 × 10²³ mole⁻¹

Speed of light = 3 × 10⁸ms⁻¹

Planck constant = 6.626 × 10⁻³⁴ Js

To calculate the maximum wavelength of light capable of dissociating the f–f bond in one molecule of fluorine,

The energy required to break one f--f bond is calculated as,

⇒ Bond energy / Avogadro's number

= 157 × 10³/ 6.023 × 10²³

= 26.067 × 10⁻²⁰ Joules

Let the wavelength of the light required to break one f -f bond be λ.

We find the maximum wavelength by using Einstein's equation for photon energy.

Einstein's equation for photon energy is represented mathematically by the following formula:

E = hf = hc / λ

In this equation,

Substituting the values in the formula,

⇒ 26.067 × 10⁻²⁰ = ( 6.626 × 10⁻³⁴ × 3 × 10⁸) / λ

⇒  λ = ( 6.626 × 10⁻³⁴ × 3 × 10⁸) / 26.067 × 10⁻²⁰

       =  7.625 × 10⁻⁵ m

Hence, the maximum wavelength is 7.625 × 10⁻⁵ m.

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Answer:

20

Explanation:

20m= 1 seconds

40m= 2 seconds

180÷9=20

Answer:

W = 19.845 J

Explanation:

Work is defined as W = Fdcos\(\theta\), where F is the force exerted and d is the distance. Because the direction the ball is falling is the same direction as the force itself, \(\theta\) = 0 deg, and since cos(0) = 1, this equation is equivalent to W = Fd. In this case, the force exerted is the weight force, which is equivalent to m * g. Substituting you get:

W = mgd = 0.810 kg * 9.8 m/s^2 * 2.5m

W = 19.845 J

Answer:

/////////////////////////////////////////////////

Explanation:

When the ball is in contact with the floor for 0.0300 seconds, the average force (in N) the floor exerts on the ball is 0 N. F = (Δp) / Δt

where Δp is the change in momentum of the ball and Δt is the time interval during which the change in momentum occurred.

Δp = mvf - mvi

where mvf is the final velocity of the ball and mvi is the initial velocity of the ball.

In this case, the ball is dropped from a certain height and comes to rest on the ground. This means that its initial velocity (mvi) is zero.

Hence:Δp = mvf - mvi

                 = mvf - 0

                 = mvf

The momentum is conserved in the vertical direction, which means that the final momentum (mvf) of the ball after bouncing is equal in magnitude but opposite in direction to its initial momentum.

Hence: mvf = - mvi

                   = - m * v0

where m is the mass of the ball and v0 is its initial velocity (which is zero).

Substituting the above expression for mvf into the equation for the average force:

F = (- m * v0) / Δt

where Δt = 0.0300 seconds is the time interval during which the change in momentum occurred.

F = (- m * v0) / Δt

  = (- 0.250 kg * 0) / 0.0300 seconds

  = 0 N

Therefore, the average force (in N) the floor exerts on the ball is 0 N.

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Answer:

HOPE IT HELP YOU A LOT :)

I prove it also .

Answer:

Newtons Second law of motion states that"The rate of change of momentum is directly proportional to the force applied"

the absolute pressure is 1.061×10^5pa

The formula for pressure caused by a liquid's weight is given as P= ρ g h

where p=pressure,

h=depth of the liquid

ρ = density of the liquid

g = acceleration due to gravity.

We use the following expression to determine the absolute pressure at the bottom of the container:

P(absolute)= P• [ρ(water) × h(water)× g] + [ ρ(oil) × h(oil)× g]

Where

P•= absolute pressure=101325 Pa

ρ(water= 1000 kg/m³

h(water)= 17.0 cm = 0.17m

ρ(oil)= 0.500= 500kg/m^3

h(oil)= 33.0-cm= 0.33m

If we change the values in the previously stated expression, we get

P(absolute)=. 1.01×10^5 + (1000×0.17×9.8) + (500×0.33×9.8)

=1.061×10^5pa

As a result, the container's bottom has an absolute pressure of 1.061 x 10-5 pa.

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The pressure acting on the top and bottom faces is\(0.1635 N/cm^2\), the pressure acting on the side faces is\(0.4905 N/cm^2,\) and the pressure acting on the front and back faces is \(0.981 N/cm^2.\)

To compute the pressure acting on each face of the rectangular block, we need to know the weight of the block and the area of each face.

The weight of the block can be calculated as follows:

Weight = Mass x Gravity

Weight = 0.3 kg x 9.81 \(m/s^2\)

Weight = 2.943 N

The area of each face can be calculated as follows:

Top and bottom face: length x width = 6 cm x 3 cm = 18 \(cm^2\)

Side faces: length x height = 6 cm x 1 cm = 6 \(cm^2\)

Front and back faces: width x height = 3 cm x 1 cm = 3\(cm^2\)

Now we can calculate the pressure acting on each face:

Top and bottom face: Pressure = Weight / Area = 2.943 N / \(18 cm^2\) = \(0.1635 N/cm^2\)

Side faces: Pressure = Weight / Area = 2.943 N / \(6 cm^2\) = 0.4905 \(N/cm^2\)

Front and back faces: Pressure = Weight / Area = 2.943 N / 3 cm^2 = 0.981 N/cm^2

Therefore, the pressure acting on the top and bottom faces is\(0.1635 N/cm^2\), the pressure acting on the side faces is\(0.4905 N/cm^2,\) and the pressure acting on the front and back faces is \(0.981 N/cm^2.\)

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Answer:

d

Explanation:

Answer:

d

Explanation

a force solely dependent on the object’s mass

Answer:

3433.4m

Explanation:

Volume_submerged = (Density_mantle / Density_mountain) * Volume_exposed

Volume_submerged_meters = Volume_submerged / 1000000

Weight_submerged = Density_mantle * Volume_submerged_meters * g

Weight_submerged = Weight_exposed

Density_mantle * Volume_submerged_meters * g = Density_mountain * Volume_exposed * g

Volume_submerged_meters = (Density_mountain / Density_mantle) * Volume_exposed

Volume_submerged_meters = (3.2 g/cm^3 / 4.1 g/cm^3) * 4400 meters

Volume_submerged_meters = (0.7805) * 4400 meters

Therefore, the total height of the mountain is 3433.4 meters.

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Sometimes interactions between objects in motion are difficult to analyze during the process that causes changes in motion. In these cases, it can be easier to describe the overall change in motion rather than detail it step by step.

In some cases, analyzing the interactions that cause changes in motion can be challenging. In such scenarios, it is more convenient to describe the overall change in motion rather than detailing each step. This approach is often referred to as the principle of conservation of momentum. This principle states that the total momentum of an isolated system remains constant in the absence of external forces.

It can be applied to a wide range of physical phenomena, including collisions between objects, rocket propulsion, and fluid dynamics. By using this principle, scientists and engineers can make accurate predictions about the behavior of physical systems without needing to analyze every individual interaction.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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The one-dimensional diffusion equation or Fick's second law is the name of this equation. For the geographically and temporally variable concentration, it is solvable.

A diffusion explanation is what?

The movement of molecules along a concentration gradient is known as diffusion. It is a significant process that all living things go through. Diffusion facilitates the flow of materials into and out of cells.

Which definition of diffusion is the best?

Diffusion is the movement of molecules from a region where they are more concentrated to one where they are less concentrated. Therefore, "Movement of molecules from a region of their greater concentration to a region of their lower concentration" is the right response.

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you are so wise how do you do it?

Answer:

ANSWER BELOW I

                             I

                            V

Remember that w=mg where w is weight in Newtons, m is mass in kilograms, and g is gravity in

m/s2

. For example, for Earth, 445 N = 45.4 × 9.8

m/s2

:Notice that the x-axis values will be gravity in

m/s2

, which is already given in the table, and the y-axis values will be the weight in Newtons. Remember to round your weights to a whole number, and to enter the points starting with the lowest gravity (moon, then Mars, then Venus, then Earth).

Around 3 p.m., when the sun is sufficiently low in the sky, more heat is lost than is received.

Even though the sun's beams are most direct around noon, the afternoon is the warmest part of the day because air temperatures close to the earth's surface will continue to rise as long as incoming solar radiation outweighs outgoing longwave earth radiation.

Around 3 p.m., it gets the warmest. When the sun is at its zenith in the sky, or after midday, heat continues to accumulate as long as more heat is entering the earth than is leaving. When the sun is low enough in the sky, around 3 p.m., more heat is lost than is gained.

Many people believe that noon is when it gets the warmest. We receive the maximum energy from the sun at noon, which may make it feel hotter. But during the day, Earth is accumulating heat or energy from incoming sources. The air becomes warmer as the day goes on.

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The four interactions of electromagnetism are:

1. Electric Field Interaction: The electric field is created by electric charges and exerts a force on other charged particles.

2. Magnetic Field Interaction: The magnetic field is generated by moving electric charges or currents and exerts a force on other moving charges or magnetic materials.

3. Electromagnetic Induction: Electromagnetic induction occurs when a changing magnetic field induces an electric current in a conductor.

4. Electromagnetic Waves: Electromagnetic waves are a form of energy propagation that results from oscillating electric and magnetic fields.

The theory of electromagnetism describes the fundamental interactions of electromagnetism, which are based on the principles of electricity and magnetism. These interactions are explained by Maxwell's equations and the electromagnetic field theory. The four interactions of electromagnetism are:

1. Electric Field Interaction: The electric field is created by electric charges and exerts a force on other charged particles. According to Coulomb's law, like charges repel each other, while opposite charges attract. Electric field interactions play a crucial role in understanding the behavior of charged particles and electrically charged objects.

2. Magnetic Field Interaction: The magnetic field is generated by moving electric charges or currents and exerts a force on other moving charges or magnetic materials. According to the laws of magnetism, like poles repel each other, while opposite poles attract. Magnetic field interactions are responsible for various phenomena, including the behavior of magnets, electromagnetic induction, and the operation of electric motors and generators.

3. Electromagnetic Induction: Electromagnetic induction occurs when a changing magnetic field induces an electric current in a conductor. This phenomenon is described by Faraday's law of electromagnetic induction and is the basis for generating electricity in power plants and the operation of transformers.

4. Electromagnetic Waves: Electromagnetic waves are a form of energy propagation that results from oscillating electric and magnetic fields. These waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. Electromagnetic waves can travel through a vacuum and have various applications, including communication, imaging, and energy transmission.

These four interactions of electromagnetism are interconnected and form the foundation of numerous technological advancements and our understanding of the natural world. They have been extensively studied and tested, leading to the development of theories and applications in various fields such as electronics, telecommunications, energy, and medical imaging.

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Answer:

I Choose C, Because Genetically engineered bacteria and other microorganisms are currently used to produce human insulin, human growth hormone, a protein used in blood clotting, and other pharmaceuticals and the number of such compounds could increase in the future.

So Basically There Saying It Can Be Used To Remove Certain Diseases.

Answer:

analysis the force is zero

Explanation:

Let's apply Newton's second law

         F = m a

In this equation we see that the force is directly related to the acceleration, as they indicate that the rocket is far from any planet or star has no force applied to it, therefore they also relate it to zero.

Change we can analyze the exercise with Newton's first law, which indicates that an object maintains its constant speed in a straight line has no forces applied to it.

In either analysis the force is zero

The Factors include the following:

Capabilities and Security.

Nuclear weapons are a type of weapon that uses nuclear reactions to create destructive explosion.

When a nuclear weapon explodes, it gives off four types of energy: a blast wave, intense light, heat, and radiation.

The factors that may cause a country to obtain or not to obtain nuclear weapons are discussed below:

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Explanation:

ob 1 day

1day is the answer

Answer:

Yes

Explanation:

sorry if im wrong

A protein with an isoelectric point (pI) of 7.0 will have no net charge when the pH of the surrounding environment is also 7.0.

The isoelectric point (pI) of a protein is the pH at which the protein carries no net charge. At a pH below its pI, the protein will carry a net positive charge, while at a pH above its pI, the protein will carry a net negative charge.

In the case of a protein with a pI of 7.0, this means that at a pH below 7.0, the protein will carry a net positive charge, while at a pH above 7.0, the protein will carry a net negative charge. However, when the pH of the surrounding environment is 7.0, the protein will have no net charge and will be electrically neutral.

The charge of a protein can have important implications for its function and behavior, as it can affect its solubility, stability, and interactions with other molecules.

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