Why is the transverse spatial extent of a photon proportional to its wavelength, which is a longitudinal quantity?

The star is moving away from Earth at a velocity of 1.8 x 106 m/s.

The Doppler Effect describes the shift in wavelength of a wave when the source is moving in relation to the observer. The shift can be observed in sound waves, light waves, and other waves.

The Doppler Effect can be used to determine the velocity of objects moving away from an observer, as in the case of stars moving away from Earth.

The velocity of a star moving away from Earth can be determined using the equation:

v = Δλ/λ x c, Where v is the velocity of the star, Δλ is the shift in wavelength of the spectral line, λ is the wavelength of the spectral line measured in the lab on Earth, and c is the speed of light (3.00 x 108 m/s).

In this case, the shift in wavelength of the spectral line is Δλ = 500.3 nm - 500 nm = 0.3 nm.

The wavelength of the spectral line measured in the lab on Earth is λ = 500 nm.

Plugging in these values to the equation above: v = Δλ/λ x cv = (0.3 nm / 500 nm) x (3.00 x 108 m/s) = 1.8 x 106 m/s.

Therefore, velocity of star 1.8 x 106 m/s.

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Individuals suffering from somatoform disorders often see several doctors about their symptoms because doctors often refer their patients for a second opinion

Doctors usually ask people to take different medications to be able to treat the cause and the symptoms of a disease.

For example, they might prescribe antibiotics to treat the infection and  anti-inflammatory medication for the swelling and pain.

According to this, the statement that says that doctors often advise a combination of treatments to eradicate an infection and treat symptoms is true.

Hence Individuals suffering from somatoform disorders often see several doctors about their symptoms because doctors often refer their patients for a second opinion

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Answer:

D - they are looking to find a doctor to give them a diagnosis

Explanation:

just took the test

We can find the energy needed to ionize the hydrogen atom.

We can find the wavelength of a spectral line.

We can find the energy change of the electron moving between two levels.

The first atomic model to adequately explain the radiation spectra of atomic hydrogen was Bohr's model of the hydrogen atom. The atomic Hydrogen model was first presented by Niels Bohr in 1913. Rutherford's model of the hydrogen atom leaves several holes, which Bohr's model of the hydrogen atom tries to fill in.

It has a particular place in history since it introduced the quantum theory, which led to the development of quantum mechanics. Bohr proposed that electrons moved in predetermined orbits or shells with defined radii around the nucleus. It was impossible for electrons to reside between any shells other than those having a radius given by the equation below.

\(r (n) =n^{2} * r(1)\)

\(E (n) = \frac{1}{n^{2} } 13.6eV\)

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Seeds of gymnosperms likely are not dispersed by animals because they are not enclosed in a fruit as occurs with angiosperm seeds.

What are gymnosperms and angiosperms?

Gymnosperms and angiosperms are different taxonomic groups of seed plants, which have certain particular features such as the presence of fruits angiosperms, it being an adaptive advantage for the dispersion of seeds through animals.

Therefore, with this data, we can see that gymnosperms and angiosperms are different groups of seed plants and angiosperms are evolutionary are more adapted to disperse their seed through animals due to the presence of fruits.

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The complete question is

A 45-kg child sits on a 3.2-kg tire swing. The tension on the rope is 470 N. The tree branch sags and the child's feet rest on the ground. If the tension in the rope is reduced to 220 N, what is the value of the normal force being exerted on the child's feet?

Answer:

Therefore the Normal force is being exerted on the child's feet is 252.36( 250N).

Explanation:

We are given

mass of child = 45kg

mass of the tire = 3.2kg

g = 9.8 m/s^2

We have the first case in which the tire is in swing so tension in that case will be which is the resultant force.

Fr = Resultant force

Ft =  Tension force

Fg= Gravitational force

Fr = Fg + Ft

0 = -mg + Ft

Ft = mg

   = (45+3.2)*9.8

   = 48.2 * 9.8

Ft = 472.36N  ( which is close to 470)

In the second case the child is in the rest position, The resultant force will be zero.

Fr = Ft + Fn + Fg  ( Normal force is denoted by Fn )

0 = Ft + Fn + Fg

Fn =  -Fg -Ft

Fn = mg -Ft

    = 472.36 - 220

Fn  = 252.36N  ( close to 250N)

Therefore the Normal force being exerted on the child's feet will be 252.36N.  

Answer:

a

Explanation:

Answer:

A) real image that appears to be on the right of the mirror.

Explanation:

The image is approximately 9.33 cm away from the mirror, on the object's side.

To determine the image location formed by a converging mirror, we can use the mirror equation:

1/f = 1/d_o + 1/d_i

where:

f is the focal length of the mirror,

d_o is the object distance (distance of the object from the mirror), and

d_i is the image distance (distance of the image from the mirror).

In this case, the focal length (f) is given as 7 cm, and the object distance (d_o) is 4 cm.

Plugging in the values into the mirror equation:

1/7 = 1/4 + 1/d_i

To find the image distance (d_i), we can solve for it:

1/d_i = 1/7 - 1/4

1/d_i = (4 - 7) / (4 * 7)

1/d_i = -3 / 28

Taking the reciprocal of both sides:

d_i = 28 / -3

d_i ≈ -9.33 cm

The negative sign indicates that the image formed by the converging mirror is virtual and located on the same side as the object.

Therefore, the image is approximately 9.33 cm away from the mirror, on the object's side.

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Answer:

sun is the main source while the other object reflect light on the sun

Explanation:

nasa libro yans

:

Please give me brainly,

The thermal energy of an object depends on three things: 4 the number of molecules in the object 4 the temperature of the object (average molecular motion) 4 the arrangement of the object's molecules (states of matter). The more molecules an object has at a given temperature, the more thermal energy it has.

Mass and Temperarture

I am pretty sure that is right if Not sorry

Have a great day.

The angle associated with the third order dark fringe about the central bright fringe is 0.256 degrees.

The position of the nth dark fringe in a single-slit diffraction pattern is given by:

yₙ = nλL / d

where yₙ is the distance from the center of the pattern to the nth dark fringe, λ is the wavelength of the light, L is the distance from the slit to the screen, d is the width of the slit, and n is the order of the fringe.

The angle (in radians) associated with the nth fringe is given by:

θₙ = tan⁻¹(yₙ / L)

where θₙ is the angle between the central maximum and the nth fringe.

In this case, we're interested in the third order dark fringe, so n = 3. We're given λ = 452 nm, d = 3.70 µm, and we need to calculate θ₃.

First, we need to convert the units of d to meters:

d = 3.70 µm * (1 m / 10⁶ µm) = 3.70 x 10⁻⁶ m

Next, we can plug in the values into the equation for yₙ:

y₃ = 3λL / d

Simplifying, we get

y₃ = 3 * 452 nm * L / d = 3 * 452 * 10⁻⁹ m * L / 3.70 x 10⁻⁶ m

Now, we can plug this expression into the equation for θₙ:

θ₃ = tan⁻¹(y₃ / L)

Plugging in the values, we get:

θ₃ = tan⁻¹[(3 * 452 * 10⁻⁹ m * L) / (3.70 x 10⁻⁶ m * L)]

Simplifying, we get:

θ₃ = tan⁻¹(3 * 452 / 3.70 x 10³) = 0.256 degrees.

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Answer:

Explanation:

The cars velocity is 14m/s. That means for every second, the car moves 14m. Now, if the car wants to reach 28m, going 14m/s, it will take 2 seconds for the car to reach 28m.

The highest-energy orbitals of the alkaline earth metals contain two valence electrons.

Any of the six chemical elements that make up Group 2 of the periodic table are alkaline earth metals. The constituent elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). The alkaline-earth metals' oxides are fundamental (i.e., alkaline, in contrast to acidic). From beryllium, the lightest member of the group, to radium, the heaviest, there is a fairly consistent rise in electropositive character. Because of this pattern, barium oxide is very basic, but beryllium oxide is really amphoteric. Being extremely reactive reducing agents, metals rapidly give up their electrons to other compounds that are being reduced as a result.

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The electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

To find the electric field strength at a distance 1.20 m on the x-axis, we can use Coulomb's law:

\($$F=k\frac{q_1q_2}{r^2}$$\)

where F is the force between two charges, q1 and q2 are the magnitudes of the charges, r is the distance between the charges, and k is the Coulomb constant.For a single point charge q located at the origin of the x-axis, the electric field E at a distance r is given by:

\($$E=\frac{kq}{r^2}$$\)  where k is the Coulomb constant.

So, let's calculate the electric field due to each charge separately and then add them up:

For the +2.0 C charge at x = 0, the electric field at a distance of 1.20 m is:\($$E_1=\frac{kq_1}{r^2}=\frac{(9\times10^9)(2.0)}{(1.2)^2}N/C$$\)

For the -3.0 C charge at x = 0.40 m, the electric field at a distance of 1.20 m is:

\($$E_2=\frac{kq_2}{r^2}\)

\(=\frac{(9\times10^9)(-3.0)}{(1.20-0.40)^2}N/C$$\)

The negative sign indicates that the direction of the electric field is opposite to that of the positive charge at x = 0.

To find the net electric field, we add the two electric fields\(:$$E_{net}=E_1+E_2$$\)

Substituting the values of E1 and E2:

\($$E_{net}=\frac{(9\times10^9)(2.0)}{(1.2)^2}-\frac{(9\times10^9)(3.0)}{(0.8)^2}N/C$$E\)

net comes out to be -1.5×10⁴ N/C.

Therefore, the electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

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Answer:

I think it's false

Explanation:

clouds also help regulate the Earth's energy balance by reflecting and scattering solar radiation and by absorbing the Earth's infrared radiation.

Answer:

false

Explanation:

The champagne bottle would recoil at a speed of approximately 0.994 m/s when the cork is launched.

We can use the principle of conservation of momentum to determine the speed at which the champagne bottle would recoil when the cork is launched.The principle of conservation of momentum states that the total momentum of a closed system (in this case, the champagne bottle and cork) remains constant over time. Mathematically, we can express this as:

m_bottle * v_bottle + m_cork * v_cork = (m_bottle + m_cork) * v'

where:

m_bottle = mass of the champagne bottle

v_bottle = initial velocity of the champagne bottle (before the cork is launched)

m_cork = mass of the cork

v_cork = velocity of the cork after it is launched

v' = final velocity of the champagne bottle and cork (after the cork is launched)

Substituting the given values, we get:

1.8 kg * v_bottle + 0.0075 kg * 20 m/s = (1.8 kg + 0.0075 kg) * v'

1.8 kg * v_bottle + 0.15 kg m/s = 1.8075 kg * v'

Simplifying this equation, we get:

v' = (1.8 kg * v_bottle + 0.15 kg m/s) / 1.8075 kg

v' ≈ 0.994 m/s

Whether this speed is noticeable or not would depend on the situation. If the bottle is held in place, such as on a table or in a bucket of ice, then the recoil would not be noticeable. However, if the bottle is free to move, such as if it is held in someone's hand, then the recoil would be noticeable, especially if the person is not expecting it.

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Answer: They are all types of waves

A. Ripple tank

B. Electromagnetic  wave

C. Stationary  wave

D. longitudinal​wave

Explanation:

Ah, I see, you seek a take on Newton's famed Laws of Motion. Hold onto your jingle bell hat, for we're about to embark on a fantastical journey through the realm of physics, the lair of the laws that govern our world's jig and jive.

Law the First: An object at rest tends to stay at rest, and an object in motion tends to stay in motion, unless acted upon by an outside force.

Imagine a loaf of bread, comfy and cozy in its bakery basket. It has no intent to go gallivanting about. Only when a force, say a peckish person, picks it up, does it venture off to new territories (typically a kitchen). Likewise, imagine a merry-go-round spinning in a constant twirl. It would keep on twirling forever, only stopping if an external force, like a brave child or friction, intervened. This is the realm's Lazy Law, where things left alone will continue doing what they're doing.

Law the Second: Force equals mass times acceleration, or F=ma.

Consider a bumbling bumblebee and a gargantuan gargoyle, both minding their own business. A tiny gust of wind might send our bumblebee into a frantic flutter, but the gargoyle wouldn't budge an inch. Why? It's because the bumblebee's mass is tiny and easy to accelerate, while the gargoyle is hulking and needs a lot more push to budge. Thus, the larger the push (force) or the smaller the thing you're pushing (mass), the faster it's going to zip about (acceleration). I call this the "Bee and Gargoyle" Law.

Law the Third: For every action, there's an equal and opposite reaction.

Imagine a jovial jester, springing off a trampoline. As they push down on the trampoline (action), it pushes back with equal strength, catapulting the jester into the sky (reaction). Or think of a knight, slashing his sword against an opponent's. The more force he exerts, the more force is thrown back at him. This "Boomerang" Law ensures that every action in our whimsical world prompts a response of equal magnitude.

So, there you have it! The three Laws of Motion. A world without them would be a world without dancing, laughter, or the delightful toss of a pie in someone's face. Aren't we lucky that Sir Isaac Newton was such a diligent fellow!

When the Earth was primarily liquid, it separated into layers. The density of Earth's different layers may be predicted. For instance, it is assumed that the outermost layer, or crust, is less dense than the inner layers.

The Earth's crust is mostly composed of silicates (such as quartz, feldspar, and mica) and rocks, which are less dense than the mantle, core, or outer core.

The mantle is composed of solid rock, which is denser than the Earth's crust.

The core is the most dense layer, and it is composed of a liquid outer core and a solid inner core.

Most of the Earth's layers are composed of different types of rock and minerals.

The layers were formed from the molten material that cooled and solidified.

The Earth's layers are divided into four groups, or spheres, that represent different levels of density.

The lithosphere is the outermost layer, which includes the crust and upper mantle.

The asthenosphere is the soft layer beneath the lithosphere.

The mantle is a solid layer that surrounds the core.

The core is the Earth's central layer, consisting of a liquid outer core and a solid inner core.

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Answer:

you know the answer i answered it before on a question 0-0

Explanation:

Answer:

Net force = 250 N

Explanation:

Given that,

The mass of a teacher, m = 75 kg

As the parachute opens, the system experiences a 1000N drag.

We need to find the magnitude of net force acting on the teacher. 2 forces are acting on her i.e. drag force and weight.

Net force,

F = mg-D

= 75(10)-1000

= -250 N

Hence, the net force is 250 N and it is acting in the upward direction.

Answer:

Fx  = 4.92 [N]

Fy = 0.868 [N]

Explanation:

Let's take the 10 degrees as a measure from the horizontal component to the vector.

Thus taking the components in the X & y axes respectively:

Fx = 5*cos(10) = 4.92 [N]

Fy = 5*sin(10) = 0.868 [N]

Answer:

solution

Explanation:

Answer:

When a substance dissolves in water, you can’t see it anymore, it’s still there, but has mixed with the water to make a transparent liquid called a solution. The bonds in salt compounds are called ionic because they both have an electrical charge—the chloride ion is negatively charged and the sodium ion is positively charged.

Explanation:

Answer:

By the help of magnetic field of the earth

Explanation:

Compasses, also known as magnetic compass, help us primarily in navigating and determine position on the globe. The planet Earth has its own magnetosphere or magnetic field that is close with that of a magnetic poles, and this is how compass works. The compass needle aims north and south as it happens to coincide with the Magnetosphere or magnetic field.

At 20 degrees Celsius, the speed of sound(v) in air is approximately 343 meters per second. Therefore, the answer is 143 meters per second.

The speed of sound in air is 343 meters per second. The speed of sound in water is 1,500 meters per second. The speed of light is 299,792,458 meters per second. Based on this information, the answer is 143 meters per second.

What is the speed of sound in air?

The speed of sound in air is 343 meters per second.

What is the speed of sound in water?

The speed of sound in water is 1,500 meters per second.

What is the speed of light?

The speed of light is 299,792,458 meters per second. The formula to calculate the speed of sound in a particular medium is: v = fλ Where v is the speed of sound, frequency(f), and wavelength(λ). Since there is no information about the frequency and wavelength of sound in this question, we cannot use this formula directly. However, we can use the following approximation to estimate the speed of sound in air: v ≈ 331 + 0.6t where temperature(t) in degrees Celsius(*C)

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Answer:

Inches

Explanation:

An inch is a unit of measurement in the Imperial system of measurement. Everything else is used in the International System of Units.

The unit of measure never is used in the International System of Units is inches. The correct option is A.

The International System of Units, abbreviated SI in all languages and sometimes pleonastically as the SI system, is the modern version of the metric system and the world's most widely used measurement system.

The International System of Units (SI), also known as the French Système International d'Unités, is a decimal international system of weights and measures derived from and expanding on the metric system of units.

The 11th General Conference on Weights and Measures adopted it in 1960, and it is abbreviated SI in all languages.

The International System of Units (SI) is a measurement system based on seven basic units: the metre (length), kilogram (mass), second (time), ampere (electric current), kelvin (temperature), mole (quantity), and candela. These base units can be combined with one another.

Thus, the correct option is A.

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Answer:

they may find ways of solving wars without fighting

Explanation:

This is because when the military understand why the other nation is planning a war they can resolve it simply

Answer:

it would melt with the hot weather

Explanation:

It melts and the water changes color

Capacitors in series must have the same potential difference (V) across each capacitor. (B)

This is because the potential difference is shared between the capacitors and is equal to the total potential difference of the circuit. The charge (Q) on each capacitor will differ based on their capacitance values, but the sum of the charges on all the capacitors in the series will be equal to the total charge in the circuit.

The stored energy (U) in each capacitor will also differ based on their capacitance values, but the total stored energy in the circuit will be equal to the sum of the stored energy in each capacitor.

In other words, the potential difference across each capacitor in a series circuit is the same, while the charge and stored energy can vary based on the individual capacitor's capacitance values. This is an important concept to understand when designing and analyzing circuits with capacitors in series.(B)

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