some incandescent light bulbs are filled with argon gas. what is for argon atoms near the filament, assuming their temperature is 2500 k?

Answer:

Pressure and velocity are inversely proportional to each other because if pressure increase, the velocity decrease to keep the algebraic sum of potential energy, kinetic energy and pressure constant.

Answer:

177.87

Explanation:

acellus

The potential difference between the points A and B is 177.9 V.

Potential difference between any two points is the amount of work required to move a unit positive charge along any path from point A to point B without accelerating is referred to as the electric field.

Here,

The charge on the particle, q = +0.00235 C

The change in electric potential energy, ΔU = 0.418 J

The potential difference can be defined as the electric potential energy per unit charge.

Therefore, the potential difference between A and B,

V = ΔU/q

V = 0.418/0.00235

V = 177.9 Volt

Hence,

The potential difference between the points A and B is 177.9 V.

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When liquid water freezes and then melts again, there is no loss of water during or after it changes form.

As liquid water freezes into ice, ice takes up more space because it has less density, but when the ice melts into liquid water, it is the same amount of water as it was there before although some of it may be in the form of water vapour during the process of melting.

The process by which a liquid changes its form to solid phase is called freezing.

The process by which a solid form of a substance changes into its liquid form is called melting.

Density is the substance's mass per unit of volume.

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Maximum error in the result of the sum of measurement is equal to the sum absolute error of the individual observed measurements

(a) The maximum error in D is 0.09

(b) The standard error in D is approximately 0.034

The procedure for arriving at the above values is as follows;

The given measurements and the sited errors are;

A = 15.21 + 0.01

B = 10.82 + 0.05

C = 11.00 + 0.03

D = A + B + C

(a) Required parameter;

To calculate the maximum error in D

The equation for the propagation of error in addition is presented as follows;

Given that we have;

x = a + b

Therefore;

x + ±Δx = (a ± Δa) + (b ± Δb) = a + b ± (Δa + Δb)

∴ Δx = Δa + Δb

From the above formula, we have;

Where;

D = A + B + C

The maximum error in D = The sum of the maximum error in A, B, C

∴ The maximum error in D = 0.01 + 0.05 + 0.03 = 0.09

(b) Required parameter:

To find the standard error in D

The standard error is the sampling distribution's standard deviation, SD

Variance = SD²

The combined variance, SD² = The sum of the squares of individual standard deviations

Given that the standard errors represents the standard deviation, we get;

The combined variance, SD² = 0.01² + 0.05² + 0.03²

The combined variance, SD = √(0.01² + 0.05² + 0.03²) = 0.059

\(Standard \ error = \dfrac{SD}{\sqrt{n} }\)

Where n = 3, for the three measurement, we get;

\(Standard \ error = \dfrac{\sqrt{0.01^2 + 0.05^2 + 0.03^2} }{\sqrt{3} } \approx 0.034\)

The standard error in D is approximately 0.034

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The resistance of R1 is 90ohms when three battery's are connected together in series with different voltages passing different currents.

Given the voltage of unknown battery = V1

The resistance of resistor = R1

The voltage of second battery (V2) = 9V

The battery's are  connected in series.

The voltage across R1 is now = V1+V2

The current through resistor R1  is (I1) = 0.3A

The voltage of third battery (V3) = 9V

The third battery is connected in series with the first two.

The voltage across R1 = V1 + V2 + V3

The current through R1 is (I2) = 0.4A

We know that from Ohms law V = IR such that V is directly proportional to Resistance R then:

In series the voltage of battery's (Vs) = V1 + V2 + V3

Initially when I = 0.3A then:

R1 = (V1 + V2)/I1 = (V1 +9)/0.3

when I = 0.4A then:

R1 = (V1 + V2 + V3)/I2 = (V1 + 9 + 9)/0.4

(V1 +9)/0.3 = (V1 + 9 + 9)/0.4

0.4V1 + 3.6 = 0.3V1 + 5.4

0.1V1 = 1.8

V1 = 18V

Then R1 = (18 + 9)/0.3 = 90ohms

Hence the resistance in resistor R1 = 90 ohms

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Answer:

The image of the bottle should appear larger than the actual bottle.

Explanation:

A concave mirror is a kind of lens that diverges towards the center, creating its focus into a reflected image that is larger in size. This is the reason why concave mirrors are known as divergent mirrors because the way the lens is constructed diverges in the middle.

Answer:A trust me

its a because it is A

Answer: lodestone

An example of a natural magnet is the lodestone, also called magnetite. Other examples are pyrrhotite, ferrite, and columbite.

Classification of Magnets

Lodestones are a common example of natural magnets. Artificial magnets – Artificial magnets can be produced by man-made means and have a stronger magnetic field. They can also be shaped as required. When an artificial magnet is shaped in the form of a bar, it is called a bar magnet.

Explanation:

Answer:

1.02 m

Explanation:

We are here given that ,

We need to find out the compression in the spring. As we know that,

\(\longrightarrow E = \dfrac{1}{2}kx^2 \\\)

where \(x\) is the compression in the spring. So that,

\(\longrightarrow 30,000 J = \dfrac{1}{2}\times 50,000 \times x^2 \\\)

\(\longrightarrow x^2=\dfrac{60,000}{50,000} \\\)

\(\longrightarrow x^2=\dfrac{6}{5}= 1.2m^2\\\)

\(\longrightarrow x=\sqrt{1.2} m \\\)

\(\longrightarrow \underline{\underline{ x \approx 1.02 \ m }} \\\)

and we are done!

None of the options listed is a negative externality. A negative externality is an unintended consequence of an economic activity that affects a third party who is not directly involved in the activity.

If I were to choose: Businesses would not necessarily increase hiring rates.

This could be considered a negative externality because the grant funding is intended to fund job training in order to increase employment opportunities, but if businesses do not increase their hiring rates despite having a pool of trained workers, then the intended benefit of the grant may not be fully realized. This could result in a loss of resources and a missed opportunity to address unemployment in the community.

Both lunar and solar eclipses occur due to the alignment of the Sun, Moon, and Earth, but the specific conditions required for each type of eclipse are slightly different.

For a lunar eclipse to occur, three conditions are necessary:

Full Moon: A lunar eclipse can only occur during a Full Moon when the Moon is on the opposite side of the Earth from the Sun.

Alignment: The Earth, Moon, and Sun must be aligned in a straight line, with the Earth in the middle.

Angle: The Moon's orbit around the Earth is tilted at an angle of about 5 degrees to the Earth's orbit around the Sun. Therefore, for a lunar eclipse to occur, the Moon must pass through the Earth's shadow, which only happens when the alignment is just right.

For a solar eclipse to occur, three different conditions are necessary:

New Moon: A solar eclipse can only occur during a New Moon, when the Moon is between the Earth and the Sun.

Alignment: The Earth, Moon, and Sun must be aligned in a straight line, with the Moon in the middle.

Distance: The Moon's distance from the Earth can affect whether or not a solar eclipse occurs. The Moon's orbit around the Earth is elliptical, meaning that it is not always the same distance from Earth. If the Moon is too far away, it appears smaller in the sky and cannot completely block the Sun's disk, resulting in an annular solar eclipse. If the Moon is closer to the Earth, it appears larger and can fully block the Sun, resulting in a total solar eclipse.

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According to Ampère's law as extended by Maxwell, the integral of the magnetic field (B) dotted with an infinitesimal element of the closed path (dl) around a closed loop (∮B⃗⋅dl⃗) is equal to the permeability of free space (μ₀) times the current enclosed by the loop\((I_enc)\).

This law relates the magnetic field to the current flowing through a circuit.In the case of a charged capacitor, when the electric field (E) and the electric flux (Φ) between the plates change, it induces a changing current. This changing current, in turn, produces a magnetic field according to Ampère's law.

The induced magnetic field helps to maintain the conservation of energy and to satisfy the laws of electromagnetism. It is a manifestation of Faraday's law of electromagnetic induction, which states that a changing magnetic field induces an electric field. In this case, the changing electric field induces a changing magnetic field, completing the electromagnetic interaction.

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image distance = 4.975 cm

The distance of the object's image from the mirror is approximately 4.975 cm.

To determine the distance of the object's image from the mirror, we can use the mirror formula for concave mirrors:

1/f = 1/v - 1/u

where f is the mirror's focal length, v is the image distance, and u is the object distance.

Given that the mirror's radius of curvature is 13.5 cm, we can deduce that the focal length (f) is half the radius of curvature:

f = R/2 = 13.5 cm / 2 = 6.75 cm

The object distance (u) is given as 18.9 cm.

Plugging these values into the mirror formula, we have:

1/6.75 = 1/v - 1/18.9

Simplifying the equation:

1/v = 1/6.75 + 1/18.9

To solve for v, we can find the common denominator and add the fractions:

1/v = (18.9 + 6.75) / (6.75 * 18.9) = 25.65 / 127.575 = 0.201 cm^-1

Taking the reciprocal of both sides, we find:

v = 1 / (0.201 cm^-1) ≈ 4.975 cm

Therefore, the distance of the object's image from the mirror is approximately 4.975 cm.

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The tangential speed of a point on the Ferris wheel is approximately 2.01 m/s.  the magnitude of the centripetal acceleration of a point on the Ferris wheel is approximately 0.106 m/s².

The tangential speed of a point on the Ferris wheel is given by the formula:

v = (2πr) / T

where v is the tangential speed, r is the radius of the Ferris wheel (half the diameter), and T is the time taken to complete one revolution.

In this case, the diameter of the Ferris wheel is 76 m, so its radius is 38 m. It completes one revolution every 20 min, so the time taken is T = 20 min = 1200 s. Substituting these values in the formula, we get:

v = (2π × 38 m) / 1200 s

≈ 2.01 m/s

The centripetal acceleration of a point on the Ferris wheel is given by the formula:

a = v² / r

where a is the magnitude of the centripetal acceleration, v is the tangential speed, and r is the radius of the Ferris wheel.

In this case, we have already calculated the tangential speed to be approximately 2.01 m/s, and the radius of the Ferris wheel is 38 m. Substituting these values in the formula, we get:

a = (2.01 m/s)² / 38 m

≈ 0.106 m/s²

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Given data:

* The mass of the student is m = 65 kg.

* The distance covered by the student is d = 100 m.

* The time taken by the student to cover the distance is t = 12 seconds.

Solution:

(a). The velocity of the student is,

Thus, the velocity of the student is 8.33 meters per second.

(b). The kinetic energy of the student is,

Thus, the kinetic energy of the student is 2255.14 J.

(c). The mechanical energy of the student is the energy acquired by the student during its motion.

Thus, the mechanical energy of the student is 2255.14 J.

Answer: 0.75 hour(s) or 45 minutes

Explanation:

1 unit of electricity = 1kwh

Amount of energy consumed by 1kw load in one hour

Price per unit = ₹10

Air conditioner rating(power) = 1.2Kw

Given that balance = ₹9

Therefore, supriya's total energy cost = energy balance = ₹9

Total energy cost = power in kilowatt × time of operation (in hour) × cost per unit

₹9 = 1.2kw × time × ₹10

₹9 = 12 × time

Time = 9 / 12

Time = 0.75 hours

0.75 × 60 = 45 minutes

Answer:

all subjective study or experiment if the correct answer of given statement

Answer:

science is a practical yet knowledge based subject based of the way of subtle nature and way everything works . neither theory nor law . science is a thing that constitutes both in a way further understandable and easy . hope it solved you query

The electric fields is always directed from higher potential to the lower potential.

The electric fields always aiming from the region of higher potential to the region of lower potential. So the force of electrostatic and the direction of the travel of electrons will be always from lower potential to the region of higher potential.

An electric field is defined as the physical field which covers the electrically charged particles and also they can apply force on all other charged particles.

So we can conclude that the electric fields is always directed from higher potential to the lower potential.

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Answer:

2.066 atm

Explanation:

PV = nRT      increase T    volume and n and R remain constant

30 C = 303.15 K      40 C = 313.15

P  prop to T      new P   will be   313.15/303.15 * 2 atm = 2.066 atm

The range of motion for wrist flexion can vary depending on the individual and their flexibility. On average, the normal range of motion for wrist flexion is about 80 to 90 degrees. This means that when you flex your wrist, you can bring your hand closer to the inside of your forearm by about 80 to 90 degrees.

To better understand this, you can perform a simple experiment. Start by placing your arm on a table with your palm facing down. Then, bend your wrist upward as much as you can, trying to bring your palm closer to your forearm. The angle formed between your forearm and your hand is the range of motion for wrist flexion.
It's important to note that some individuals may have a larger or smaller range of motion due to factors such as flexibility, joint health, and previous injuries. Additionally, different activities and sports may require greater or more specific ranges of motion for wrist flexion.
Overall, the range of motion for wrist flexion is the degree to which you can bend your wrist upward towards your forearm, typically ranging from 80 to 90 degrees.

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Answer:

The height reached is 20m, The time taken to reach 20m is 2 seconds

Explanation:

Observing the equations of motion we can see that the following equation will be most helpful for this question.

\(v^{2} = u^{2} + 2as\)

We are given initial velocity, u

We know that the stone will stop at its maximum height, so final velocity, v

Acceleration, a

And we are looking for the displacement (height reached), s

Substitute the values we are given into the equation

\(0^{2} = 20^{2} + 2(10)s\)

Rearrange for s

\(0^{2} -20^{2} =20s\)

\(-400=20s\)

\(\frac{-400}{20} =s\)

s = -20 (The negative is just showing direction, it can be ignored for now)

The height reached is 20m

Use a different equation to find the time taken

\(s = vt - \frac{1}{2} at^{2}\)

Substitute in the values we have

\(-20=(0)t - \frac{1}{2} (10)t^{2}\)

Rearrange for t

\(-20 =0 -5 t^{2}\)

\(\frac{-20}{-5} =t^{2}\)

\(4 = t^{2}\)

t = 2s

The time taken to reach 20m is 2 seconds

Answer:

Explanation:

Density = mass / volume

density = 2.4

volume = 100 cm^3

2.4 = m / 100     Multiply both sides by 100

2.4 * 100 = m

m = 240 grams

A 20 kg box at rest on a horizontal surface  with acceleration at 3.5 m/s2 when someone pushes on it horizontally with a force of 150 n. Static friction has a coefficient of 0.8.

Initial block movement requires the greatest force possible, which equals the amount of static friction. As the initial maximum force needed to move the block was equal to 160N (0.8*20*10)

Applying 150 N of force

The box must be set in motion with a force no less than 160N, which is the magnitude of static friction.

Once it is running, the force needed to move the box at a constant speed is 0.4*20*10, or 80 N, which is the maximum amount of kinetic friction. The applied force is more than the amount of static friction.

Therefore box will Acceleration and friction acting on the box will be kinetic friction, therefore net force = 150-80 = 70N

Acceleration = 70/20 = 3.5 m/s^2.

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Answer:

The correct answer is A. hanging wall.

In a normal fault, the block of rock that lies above the fault plane is called the hanging wall. The hanging wall moves downwards relative to the block of rock below the fault plane, called the footwall. This type of faulting occurs where there is tensional stress in the Earth's crust, which causes the hanging wall to drop down along the fault plane. Normal faults are common in areas of extension, such as along divergent plate boundaries and in rift zones.

Explanation:

Answer:

Mars is approximately 141.6 million miles away from the Sun, which can be calculated using Kepler's law of planetary motion.

To solve this problem using Kepler's third law, we can set up a proportion between the periods and distances of Earth and Mars. Let's denote the distance of Mars from the Sun as "d" (in miles).

According to Kepler's third law:

(Period of Earth)² / (Distance of Earth)³ = (Period of Mars)² / (Distance of Mars)³

Substituting the given values:

(365.2 days)² / (93×10⁶ miles)³ = (687 days)² / d³

Simplifying the equation:

(365.2)² / (93×10⁶)³ = (687)² / d³

Now we can solve for "d" by cross-multiplying:

(365.2)² x d³ = (93×10⁶)³ x (687)²

Taking the cube root of both sides:

d³ = [(93×10⁶)³ x (687)²] / (365.2)²

Taking the cube root of the right side:

d = ∛[(93×10⁶)³ x (687)²] / (365.2)²

Evaluating the expression:

d ≈ 141.6 × 10⁶ miles

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The Trade Mart was a large exhibition hall in Dallas, Texas, originally built in 1936 and became significant after hosting the International Trade Mart luncheon on November 22, 1963, attended by President John F. Kennedy before his assassination.

What is the Trade Mart in Dallas, and why is it significant in relation to the assassination of President John F. Kennedy?

The Trade Mart was a large exhibition hall located in Dallas, Texas, USA. It was originally built in 1936 as part of the Texas Centennial Exposition and was designed to showcase Texas industry and agriculture. Over the years, the Trade Mart became a popular venue for trade shows, conventions, and other events.

One of the most significant events to take place at the Trade Mart was the International Trade Mart luncheon on November 22, 1963. This event was attended by President John F. Kennedy, who was assassinated later that day while riding in a motorcade through Dealey Plaza in Dallas.

After the assassination, the Trade Mart became a site of controversy and speculation. Some conspiracy theorists suggested that the Trade Mart was part of a larger conspiracy to assassinate Kennedy, while others believed that evidence related to the assassination was hidden there. However, there is no evidence to support these claims.

In the decades since the assassination, the Trade Mart has continued to serve as a venue for events and has undergone several renovations and updates. Today, it remains an important part of Dallas's cultural and commercial landscape.

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Answer:

F = 159.07 N

Explanation:

Given that,

Mass of a tennis ball, m = 54.9 g = 0.0549 kg

It accelerates from rest to a speed of 45.1 m/s.

The impact with the racket gives the ball a constant acceleration over a distance of 35.1 cm = 0.351 m

We need to find the magnitude of net force acting on the ball.

Let a be the acceleration of the ball. Using third equation of motion to find it.

\(v^2-u^2=2ad\\\\a=\dfrac{v^2-u^2}{2d}\\\\a=\dfrac{(45.1)^2-(0)^2}{2\times 0.351}\\\\=2897.45\ m/s^2\)

Net force,

F = ma

F = 0.0549 kg × 2897.45 m/s²

= 159.07 N

Hence, the net force acting on the ball is 159.07 N.

The ball's potential energy is completely changed into its kinetic energy (E k), which is equal to 250 J, when it hits the ground.

If v is the speed the ball was traveling at when it hit the ground, then

E(k) = 1 /2 mv^2

V= √2Ek/m

V= √2*250/ 2

V= 15.81 m/s

potential energy, which is a form of stored energy that depends on the relative positions of different components in a system. When a spring is compressed or stretched, its potential energy increases. If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy.

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