How can the motion of an object that is already moving change?
An object that is already moving can . . .

The minimum energy required to excite the electron is 1.51 eV.

The energy levels of a hydrogen atom can be calculated using the formula:

\(E_n\) = -13.6/\(n^2\) eV

where \(E_n\) is the energy of the nth energy level and n is the principal quantum number. The energy required to excite an electron from one energy level to another is given by the difference in energy between the two levels. Therefore, the minimum energy required to excite an electron in a hydrogen atom from the 1st to the 6th energy levels can be calculated as follows:

\(E_6 - E_1\)= (-13.6/\(6^2\)) - \((-13.6/1^2) eV\)

\(E_6 - E_1 = -1.51 eV\)

Therefore, the minimum energy required to excite an electron in a hydrogen atom from the 1st to the 6th energy levels is 1.51 eV.

The energy levels of hydrogen are quantized, and the energy of each level can be calculated using the Rydberg formula, which is a function of the principal quantum number (n). The formula gives the energy difference between the energy level of interest and the reference level (usually the ground state). In this case, we are interested in the energy difference between the 6th and 1st energy levels. We can calculate these energies using the Rydberg formula:

\(E_6 = -13.6/6^2 eV\)

\(E_1 = -13.6/1^2 eV\)

Subtracting E_1 from E_6 gives the energy required to excite the electron from the 1st to the 6th energy level:

\(E_6 - E_1 = (-13.6/6^2) - (-13.6/1^2) eV = -1.51 eV\)

Therefore, the minimum energy required to excite the electron is 1.51 eV.

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Answer:

\(v = \sqrt{ \frac{2gm}{r} } \)

where, g = universal gravitational constant,G

The answer is C, 5.2

When an ideal gas increases in volume at constant pressure, the average kinetic energy of the gas molecules, does not change. The correct answer is C.

This is because the temperature of the gas also remains constant. The average kinetic energy of the gas molecules is directly proportional to the temperature of the gas, so if the temperature does not change, the average kinetic energy will also not change.

This is described by the equation KE = 3/2 kT, where KE is the average kinetic energy, k is the Boltzmann constant, and T is the temperature of the gas.

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Answer:

yes it is C

Explanation:

Answer:

it is dddd

Explanation:

Explanation:

Vector, in physics, a quantity that has both magnitude and direction. It is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantity's magnitude.

Based οn the infοrmatiοn prοvided in the biοgraphy abοut Geοrge Washingtοn Carver, we can infer several traits abοut his persοnality and character.

He was a highly mοtivated and determined individual whο οvercame significant οbstacles tο achieve his gοals. He was alsο deeply passiοnate abοut his wοrk and dedicated his life tο imprοving the lives οf οthers thrοugh scientific innοvatiοn.

Additiοnally, he demοnstrated humility and a cοmmitment tο helping οthers, as evidenced by his decisiοn tο turn dοwn high-paying jοb οffers in οrder tο cοntinue his wοrk at Tuskegee.

Overall, Carver's biοgraphy suggests that he was a highly intelligent and driven individual whο was cοmmitted tο making a pοsitive impact οn the wοrld arοund him.

BIOGRAPHY:

Geοrge Washingtοn Carver was an African American bοtanist, inventοr, and educatοr bοrn intο slavery in the mid-19th century. Despite facing numerοus οbstacles, he οbtained an educatiοn and became knοwn fοr his research in agriculture, particularly in finding new uses fοr crοps such as peanuts, sweet pοtatοes, and sοybeans. Carver's wοrk helped Sοuthern farmers diversify their crοps and reduce their reliance οn cοttοn, which had depleted the sοil. He was alsο an advοcate fοr sustainable agriculture and sοil cοnservatiοn. Carver's legacy cοntinues tο inspire peοple tοday, and he is remembered as οne οf the mοst impοrtant agricultural scientists οf the 20th century, as well as an icοn οf Black histοry and achievement.

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Explanation:

x = 16.7 m

v₀ = 2.75 m/s

t = 8.90 s

Find: v

x = ½ (v + v₀) t

16.7 m = ½ (v + 2.75 m/s) (8.90 s)

v = 1.00 m/s

Answer:

9 times

Explanation:

luminosity decreases to the square of the distance

v(speed) = wavelenght x frequency

v = 0.579 m x 4 hz = 2.32 m/s

The value of the current and the resistance will be 12.5 amperes and 9.6 ohms, respectively.

A heater is a device that provides heat, such as a radiator or a recirculation pump. These heating systems only generate heat when it is required.

The current is calculated as,

W = I² R

W = I × V

1500 = I × 120

I = 12.5 Amperes

Then the resistance is calculated as,

1500 = (12.5)² R

1500 = 156.25 R

R = 9.6 ohms

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Answer:

La carrera es importante para ganarse la vida, el respeto en la sociedad y cumplir el sueño.

Explanation:

La carrera es importante por las siguientes razones principales

a) Es una forma de ganar para alimentarse a sí mismo y a su familia y asegurar su futuro.

b) Permite ser considerado como una persona respetable en la sociedad.

c) Es importante ya que también brinda la oportunidad de cumplir el sueño.

Answer:

P = 0.2 W

Explanation:

Given that,

Force, F = 4 N

Displacement, d = 1 m (say)

Time, t = 20 s

We need to find the power output. Power is the rate of doing work. So,

P = W/t

\(P=\dfrac{Fd}{t}\\\\P=\dfrac{4\times 1}{20}\\\\P=0.2\ W\)

So, the required power is 0.2 W.

The differential heating of Land and water depends on amount of solar energy reaching earth.

Land is a better conductor of heat than water, heating up and cooling down faster than water.

In summer, amount of solar radiation is highest hence difference of water and land temperature is highest. Air over land heats up and expands hence the air rises above. This rising air is replaced with the surrounding air rich in moisture content from over ocean surface. The degree of differential heating depends on amount of solar energy reaching earth's surface.

This results in Sea Breeze which is from a large body of water towards landmass due to difference in pressure created.

Land Breeze blows towards sea from land at night. It is due to difference in rate of cooling of land and ocean.

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Any object with mass and space-occupying properties is referred to as Anything with mass and space is considered matter.

Both mass and space are occupied by matter. Electromagnetic energy, such as heat, electricity, and other types, has no measured mass and cannot be confined in a volume. Energy can be transformed into matter and vice versa. Energy and matter can frequently be found together.

Air has substance, or mass, therefore it is not merely empty space. The molecules in air move all the time. Air being attracted by Earth's gravity and given weight since it has mass. It exerts pressure because it is heavy and indeed the air are continually rubbing against objects.

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Answer:

Answer in Observational evidence (b)

The evidence needed to formulate a hypothesis is observational evidence. From keen observations, we are formulating a scientific hypothesis.

Hypothesis is a plausible scientific statement which predicts a process or result of an experiment based on observations. Hypothesis can be made from well established scientific records also.

Some are formulating hypothesis based on some intuitions, while some others are formulated based on inductions or  deductions. An experiment starts from a clear cut hypothesis.

A hypothesis must be testable, falsifiable. A scientific hypothesis must be based on a strict observation and for a considerable time and the observations must support for the statement derived for the solution.

Hence, the evidence is needed for a or a hypothesis to be supported or not supported is observational evidence.

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The gravitational force that two 100 kg persons exert on each other when standing 1 m apart is approximately 6.672 × \(10^{(-7)}\) N. Option D is the correct answer.

The gravitational force between two objects can be calculated using the formula:

F = G × (m1 × m2) / r²

Where:

F is the gravitational force

G is the gravitational constant (approximately 6.672 × \(10^{(-11)}\) N·m²/kg²)

m1 and m2 are the masses of the two objects (100 kg each in this case)

r is the distance between the centers of the two objects (1 m in this case)

Plugging in the values, we get:

F = (6.672 × \(10^{(-11)}\) N·m²/kg²) × (100 kg × 100 kg) / (1 m)²

Simplifying the calculation:

F = (6.672 × \(10^{(-11)}\) N·m²/kg²) × 10,000 kg² / 1 m²

F = (6.672 × \(10^{(-11)}\) N·m²) × 10,000

F = 6.672 × \(10^{(-7)}\) N

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Answer:

Explanation:

We will use the KE equation you wrote here and fill in what we are given:

\(36=\frac{1}{2}m(12)^2\) and isolating the m:

\(m=\frac{2(36)}{12^2}\) which gives us

m = .50 kg

Answer:

whattt

Explanation:

Any substance that possesses mass and volume is considered to be matter. In general, atoms and anything composed of them are considered to be "matter."

Energy is the power to effect change or carry out work.

The connection between energy and matter is determined by the speed of light, per the theory of relativity. E = M x C^2, where E is energy, M is mass, and C is the speed of light, describes how matter and energy are related.

Matter and Energy - How are they inter-related?

The variation in a body's mass is inversely proportional to the square of the speed of light and directly correlated with the amount of energy released during the conversion process. An energy conversion process can be carried out by a system using this kind of transformations, in which some of the body's intrinsic energy is converted into thermal energy or radiant light. Also implied by this process is a loss of mass. At the atomic level, the shift of mass is significant because it demonstrates that matter is not an immutable property of the body and that it may, in fact, "disappear," releasing energy to the outside.

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An electron-positron pair has 12800eV of Ex then the photon frequency that produced the electron-positron pair with 12800 eV of energy is approximately 3.10 x \(10^1^8\) Hz.

To determine the photon frequency that produced an electron-positron pair with 12800eV of energy, we can use the relationship between energy and frequency given by the equation:

E = hf

Where:

E is the energy of the photon,

h is Planck's constant (6.626 x J·s), and

f is the frequency of the photon.

First, we need to convert the energy from electron volts (eV) to joules (J). We know that 1 eV is equal to 1.602 x \(10^-^1^9\) J, so:

E = 12800 eV * (1.602 x\(10^-^1^9\) J/eV)

E = 2.05 x \(10^-^1^5\) J

Now, we can rearrange the equation to solve for the frequency:

f = E / h

f = (2.05 x \(10^-^1^5\)J) / (6.626 x \(10^-^3^4^\) J·s)

f ≈ 3.10 x \(10^1^8\) Hz

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Answer:

GPE = m*g*h.

so 25000 J = m * 9.81m/s^2 * 46m

implying the diver's mass is 55.4 kg. precisely what you got.

and from there his/her weight is m*g, which is 55.4kg * 9.81m/s^2 = 543.5 N

Explanation:

At any instant, the potential energy is equal to the product of the weight of an object and the height of an object. So, the required weight of the diver is 543.47 N.

The energy possessed by an object by virtue of its position is known as potential energy.

Given data -

The height from the surface of the water is, h = 46 m.

The magnitude of gravitational potential energy is, U = 25,000 J.

The mathematical expression for the gravitational potential energy of the diver is given as,

U = mgh

here,

g is the gravitational acceleration.

m is the mass of diver

And the weight of diver is given as,

W = mg

Then, the potential energy is also expressed as,

U = W × h

Solving as,

25,000 = W × 46

W = 25,000/46

W = 543.47 N

Thus, we can conclude that the weight of diver is 543.47 N.

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A photon is a quantum of light is the correct answer.

A photon is tiny packets of energy of electromagnetic radiation. This concept is presented by Albert Einstein in order to explain the photoelectric effect. Photon is also known as light quantum because it is related to light.

So we can conclude that photon is a quantum of light is the correct answer.

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Answer:

a quantum of light

Explanation:

I got it right on the test.

The position vector of the particle is r(t) = (4t^3/3 - cos(t) + C1)i + (-cos(t) + C2)j + (sin(2t)/2 + C3)k.

To find the position vector of a particle given its acceleration, initial velocity, and initial position, we integrate the acceleration function twice.

In the given problem, the acceleration function is a(t) = 12ti + sin(t)j + cos(2t)k. Integrating with respect to time, we obtain the velocity function v(t) = 6t^2i - cos(t)j + sin(2t)/2k, where C1 is the constant of integration.

Integrating the velocity function with respect to time once again, we get the position function r(t) = (2t^3 - cos(t) + C1)i - sin(t)j + sin(2t)/2 + C2k, where C2 is the constant of integration.

Given the initial velocity v(0) = i, we can find the constant C1 by substituting t = 0 into the velocity function. Therefore, C1 = 0.

Given the initial position r(0) = j, we can find the constant C2 by substituting t = 0 into the position function. Therefore, C2 = 0.

Thus, the position vector of the particle is r(t) = (4t^3/3 - cos(t))i - cos(t)j + sin(2t)/2k.

To graph the path of the particle, we can use a computer to plot the position vector as a function of time. By varying the time, we can visualize the trajectory of the particle in three-dimensional space.

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Answer:

The electric charge on the brush is now positive. This means that if the object it light enough (like a balloon) it would stick to the wall.

This is fun science actually.

Explanation:

May I have brainliest please? :)

Answer:

a) The athlete’s velocity just before reaching the pad is 3.038 m/s.

b)  The constant force exerted on the pole vaulter due to the collision is approximately 499.806 Newtons.

Explanation:

a) The athlete's velocity just before reaching the pad can be calculated using the equation v = gt, where g is the acceleration due to gravity (approximately 9.8 m/s²) and t is the time taken to come to rest after landing.

Using the given values, t = 0.31 s, we can calculate the velocity as v = 9.8 m/s² * 0.31 s = 3.038 m/s.

b) To calculate the constant force exerted on the pole vaulter due to the collision, we can use the impulse-momentum principle. The change in momentum is equal to the impulse exerted on the athlete, which can be calculated using the equation Δp = m * Δv, where m is the mass of the athlete and Δv is the change in velocity.

The initial velocity of the athlete is 0 m/s (as they fall from rest) and the final velocity is 3.038 m/s (from part a). Therefore, Δv = 3.038 m/s - 0 m/s = 3.038 m/s.

Substituting the given mass, m = 51 kg, we can calculate the force as F = Δp / Δt, where Δt is the time interval for the collision (0.31 s).

F = (m * Δv) / Δt = (51 kg * 3.038 m/s) / 0.31 s ≈ 499.806 N.

Therefore, the constant force exerted on the pole vaulter due to the collision is approximately 499.806 Newtons.

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So the strength of the electric field 2.0 cm from the surface of the sphere is 1.15 x 10^7 N/C.

To answer this question, we need to use Coulomb's law, which states that the electric field at a point due to a point charge is proportional to the charge and inversely proportional to the square of the distance from the point charge.

In this case, we have a charged sphere, but we can still treat it as a point charge as long as we are far enough away from the surface of the sphere. Since we are 2.0 cm from the surface of the sphere and the sphere has a radius of 5.0 cm, we can assume that we are far enough away for this approximation to be valid.

The first step is to calculate the total charge Q of the sphere. We know that the sphere is uniformly charged to 32 nc, which means that the charge per unit volume (the charge density) is constant throughout the sphere. We can use the formula for the volume of a sphere to find the total charge:

V = (4/3)πr^3

where r is the radius of the sphere. Plugging in r = 5.0 cm, we get:

V = (4/3)π(5.0 cm)^3 = 523.6 cm^3

Since the charge density is uniform, we can find the total charge Q by multiplying the charge density by the volume:

ρ = Q/V

Q = ρV = (32 nc/cm^3)(523.6 cm^3) = 16,592 nc

Now we can use Coulomb's law to find the electric field strength E at a distance of 2.0 cm from the surface of the sphere. The formula for Coulomb's law is:

E = kQ/r^2

where k is Coulomb's constant, Q is the charge of the sphere, and r is the distance from the center of the sphere. Plugging in the values we know, we get:

E = (9.0 x 10^9 N*m^2/C^2)(16,592 nc)/(7.0 cm)^2

E = 1.15 x 10^7 N/C

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Adaptive optics provides high-spatial-resolution images mainly because the deformable mirrors are used to correct the blurring caused by Earth's atmosphere. Therefore, the correct option is b) Deformable mirrors are used to correct the blurring due to Earth's atmosphere.

Adaptive optics is a system that improves the efficiency of an optical system by reducing the effects of wavefront distortions. It is accomplished by bending the shape of the lens so that incoming light is correctly focused. It is especially effective when observing astronomical objects from the ground because it reduces the effects of Earth's atmosphere on image quality. Adaptive optics utilizes deformable mirrors to alter the shape of the lens.Adaptive optics has been used to generate high-resolution images of astronomical objects, including stars and galaxies. It has also been used in medical imaging systems to improve image quality.

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