Which 802.11 standard functions in both the 2.4-GHz and 5-GHz bands?a. 802.11gb. 802.11acc. 802.11bd. 802.11n

In physics, momentum is defined as the product of an object's mass and velocity. It is a vector quantity that describes the motion of an object and its resistance to a change in motion.

The SI unit of momentum is kilogram-meter per second (kg·m/s). and Mathematically, momentum (p) can be expressed as: p = m * v where m is the mass of the object and v is its velocity.

Momentum is conserved in a closed system, meaning that the total momentum of the system remains constant unless acted upon by an external force.  This principle is known as the law of conservation of momentum and is commonly used in the study of collisions and other types of interactions between objects.

Momentum conservation is a fundamental principle in physics that states that the total momentum of a closed system remains constant unless acted upon by an external force. This principle is derived from Newton's laws of motion and is an important concept in the study of mechanics.

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Answer:

The electromagnets are installed on the top or the side of the track

Explanation:

i think

600 kilograms is equal to 1322.4 pounds.

While measuring weight, various units like kilograms (kg) and pounds (lbs) are some commonly used units of measurement of weights. In order to understand and do all the conversion of kilograms to pounds, it is very important to know that there are 2.20462 pounds which makes up one kilogram.

Formula used:

lbs = Kg x 2.204

lbs= 600 x 2.204

So, to convert 600 kilograms to pounds, there is a requirement of  multiplying 600 to 2.20462. When this calculation is done, we obtain 1322.4 pounds.

In summary, to need to convert kilograms to pounds and thereafter, we simply need to multiply the number of kilograms by numerical value of 2.20462. 600 kg is equal to 881.848 pounds. 200 kg is equal to 440.924 pounds and consequently 300 kg is equal to 661.386 pounds.

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Answer:

Explanation:

We can use the formula for average velocity to calculate the student's velocity during the second time interval:

Average velocity = (final position - initial position) / time

During the first time interval, the student moved a distance of 4.0 m in 2.0 seconds, so her average velocity during that time was:

Velocity = 4.0 m / 2.0 s = 2.0 m/s

During the second time interval, the student moved a distance of 1.0 m, and the total time she moved was 4.0 seconds. Therefore, the time for the second interval was:

Time = Total time - First time interval = 4.0 s - 2.0 s = 2.0 s

We can now use the formula for average velocity again to calculate the student's velocity during the second time interval:

Average velocity = (final position - initial position) / time

Velocity = 1.0 m / 2.0 s = 0.5 m/s

Therefore, the student's velocity during the second time interval was 0.5 m/s.

a. The y component of the normal force is [tex]F_N(y) = F_N \times sin(\theta)[/tex]

b. The x component of the normal force is    [tex]F_N(x) = F_N \times cos(\theta)[/tex]

c. The magnitude of the normal force written in terms of the force of gravity, Fg, and the angle θ is FN = Fg / cos(θ)

d. The magnitude of the normal force written in terms of the gravitational force, Fg, acceleration due to gravity, g, the radius of the track, r, and the velocity that the car is traveling, v is FN = (Fg / g) × √((v^2)/(r^2) + 1)

e. The angle θ is approximately 30 degrees

From the question, we are to determine y component and the x component of the normal force

a) The y component of the normal force, FN, is given by:

[tex]F_N(y) = F_N \times sin(\theta)[/tex]

where θ is the angle at which the track is banked.

b) The x component of the normal force, FN, is given by:

[tex]F_N(x) = F_N \times cos(\theta)[/tex]

where θ is the angle at which the track is banked.

c) The magnitude of the normal force, FN, can be written in terms of the force of gravity, Fg, and the angle θ as:

FN = Fg / cos(θ)

d) The magnitude of the normal force, FN, can also be written in terms of the gravitational force, Fg, acceleration due to gravity, g, the radius of the track, r, and the velocity that the car is traveling, v, as:

FN = (Fg / g) × √((v^2)/(r^2) + 1)

e) Given that the car is moving at 15 m/s and the radius of the track is 130 m, we can use the equation from part (d) to solve for the angle θ:

FN = (Fg / g) × √((v^2)/(r^2) + 1)

FN = (mg / g) × √((v^2)/(r^2) + 1)

FN = mg × √((v^2)/(r^2) + 1)

FN = (m × g) × √((15^2)/(130^2) + 1)

Where m is the mass of the car, and g is the acceleration due to gravity.

Assuming a typical mass for a race car of 1000 kg, we can calculate the angle θ as follows:

FN = (1000 kg * 9.81 m/s^2) * sqrt((15^2)/(130^2) + 1)

FN = 9644.4 N

Using the equation from part (c), we can solve for the angle θ:

FN = Fg / cos(θ)

cos(θ) = Fg / FN

cos(θ) = mg / FN

θ = cos⁻¹(mg / FN)

Plugging in the values, we get:

θ = cos⁻¹((1000 kg * 9.81 m/s^2) / 9644.4 N)

θ = 30.0 degrees

Therefore, the angle θ is approximately 30 degrees

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The property is called the rectilinear propagation of light

The rectilinear propagation of light refers to the fact that light travels in straight lines in a uniform medium, such as air or vacuum. This means that if a beam of light is not obstructed or refracted by a medium, it will continue to travel in a straight line.

This property of light was first described by the ancient Greeks, and it is a fundamental principle of geometric optics. The rectilinear propagation of light allows us to use simple geometrical methods, such as ray tracing, to predict how light will behave when it interacts with lenses, mirrors, and other optical devices.

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Yes, an impulse is defined as the change in momentum of an object. When an external force is applied to an object for a period of time, the object's momentum changes.

The impulse is equal to the change in momentum, and it is equal to the force multiplied by the time over which the force was applied. Mathematically, the impulse is given by the formula:

Impulse = Force x Time

And the momentum of an object is given by the formula:

Momentum = Mass x Velocity

So, if a force is applied to an object for a time period and the object's velocity changes as a result, then the impulse experienced by the object is equal to the change in momentum. This can be expressed as:

Impulse = Final Momentum - Initial Momentum

where the final momentum is the momentum of the object after the force is applied, and the initial momentum is the momentum of the object before the force is applied.

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Both Galileo and Johannes Kepler contributed to find the features of solar systems. It was Kepler who first discovered the solar centric system and revolution of planets around.

Galileo used logical reasoning to confront the issues with the Earth's rotation and revolution. Despite their great speed, bodies do not fly off the Earth since the planet is not actually rotating quickly.

Any object on Earth is moving very slowly in terms of rotations per minute and has little tendency to take off into space. Galileo came to the conclusion that once the planets are in motion in circles, they stay in motion forever.

Copernican orbits are thus real. Galileo never acknowledged Kepler's ellipses since doing so would have required him to give up on his Copernican issue solution.

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Approximately 2.2 g of iodine-135 would remain after 19.8 hours at the given half life.

To solve this problem, we can use the formula for radioactive decay:

N = N0 * (1/2)^(t/T)

Where;

We are given that the initial amount of iodine-135 is 11.2 g, the half-life is 6.6 hours, and the elapsed time is 19.8 hours.

Using the formula, we can find the amount of iodine-135 remaining after 19.8 hours:

N = 11.2 * (1/2)^(19.8/6.6)

N ≈ 2.2 g

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The electron transport chain and oxidative phosphorylation are closely related but are not the same process.

The electron transport chain and oxidative phosphorylation are two separate processes that occur during cellular respiration. The electron transport chain involves a series of electron carriers that transfer electrons from NADH and FADH2 to oxygen, creating a proton gradient across the mitochondrial inner membrane.

Oxidative phosphorylation, on the other hand, is the process by which ATP is synthesized using the energy from the proton gradient created by the electron transport chain.

While the electron transport chain and oxidative phosphorylation are closely related and dependent on each other, they are distinct processes that occur in different locations within the mitochondria. The electron transport chain occurs in the inner mitochondrial membrane, while oxidative phosphorylation occurs in the mitochondrial matrix.

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Chemistry is referred to as the central science because it intersects with and connects other natural sciences.

Chemistry is referred to as the central science because it connects and bridges many different scientific fields. It forms the foundation of many other sciences, including physics, biology, geology, materials science, and engineering.

Understanding chemistry is essential for understanding the behavior and properties of matter and the interactions between different substances, as well as for developing new materials, medicines, and technologies. Chemistry also plays a critical role in solving many of the world's biggest challenges, such as climate change, energy production and storage, and sustainable development.

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--The complete question is, Why is chemistry referred to as the central science?--

The capacitance of the parallel plate capacitor is calculated as 35.4 nF.

Capacitor is a device for storing electrical energy and consisting of two conductors in close proximity and insulated from each other.

Capacitance of a parallel plate capacitor : C = ε₀A/d

ε₀ is permittivity of free space, A is area of the plates, and d is distance between them.

Given A = 6 m², d = 1.5 mm = 0.0015 m

V = 10 V

value of ε₀ is approximately 8.85 x 10⁻¹² F/m (farads per meter).

Using the formula for capacitance:

C = ε₀A/d = (8.85 x 10⁻¹² F/m)(6 m²)/(0.0015 m) = 35.4 x 10⁻⁹ F

Therefore, the capacitance of the parallel plate capacitor is 35.4 nF.

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Fluted filter paper is often used in gravity filtration because it allows for faster filtration rates and greater particle retention than regular flat filter paper.

The fluted shape of the paper creates channels or grooves that increase the surface area and provide more space for the filtered material to flow through. This design also prevents the filter paper from clogging, allowing air to escape and helps to maintain a steady flow of liquid through the filter.

Gravity filtration is a common laboratory technique used to separate a solid from a liquid mixture by allowing the mixture to pass through a filter under the influence of gravity. The process relies on gravity to pull the liquid through the filter paper while leaving behind the solid particles.

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The value that completes the box plot distribution of wind speed statement is 48 km/h.

To determine the value that completes the statement, locate the median, which represents the 50th percentile. From the plot, the median (50th percentile) is at approximately 42 km/h.

The box extends from the first quartile (25th percentile) to the third quartile (75th percentile), so determine the range of speeds that contains 50% of the measurements by finding the difference between the median and the first quartile, and then adding it to the median.

The plot estimates that the difference between the median and the first quartile is approximately 6 km/h. Therefore, 50% of the speeds are between 36 km/h and (42 + 6) km/h, which simplifies to 36 km/h and 48 km/h.

So the value that completes the statement is 48 km/h.

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Type 1 construction is defined as demanding that all structural members be made of noncombustible or minimally combustible materials with high fire-resistance ratings.

Construction of type 1 is also referred to as fire-resistant construction and is built to endure intense fire exposure. It primarily consists of noncombustible structural components consisting of concrete, steel, or masonry, which are commonly covered in fire-resistant materials like gypsum board, spray-on protective coatings, or fire-resistant insulation. The term combustible refers to any material that has the ability to burn or ignite when exposed to heat, flame, or other sources of ignition. Combustible materials include a wide range of substances, including wood, paper, plastics, gasoline, propane, and natural gas

High-rise constructions, hospitals, schools, as well as other facilities requiring a high level of fire protection frequently adopt type 1 construction.

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The amount of strength that is applied to the rope in a pulley to raise the object is called tension.

Basically use a rope to pull an object by the means of pulley system.

When we raise an object to a certain height a strength forces developed in the rope that is called tension in the rope.

We use the pulley and rope system in order to distribute the weight of an object evenly on all the pulleys in the system.

When lifted directly vertically the tension in the string is equal to the weight of the object that it is lifting.

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The answer is Hangers. The "hangers" connect the cables to the deck in order to pull on the cables, which transfer the pull on the towers and anchors.

Hangers also said as "Hooks" are metal elements used to attach cables to the bridge. Hooks are usually made of a metal, like stainless steel, and are attached to the deck with bolts or screws.

The cables are then passed through the lines which allow them to be taut and transmit power to the towers and the anchors. With the ropes, the cables can be stretched and securely connected to the deck. The hooks also help protect the cables from wear and tear on the caused by cable tension and movement.

Hangers are essential to any cable suspension bridge as they ensure that the cables are properly connected to the deck and can withstand the loads required for the bridge to operate safely.

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The second law of thermodynamics is a fundamental principle in physics that relates to the direction of energy transfer in a system. In general, the second law states that the total entropy of a closed system cannot decrease over time.

Energy is a fundamental concept in physics that refers to the ability of a system to do work.

In simpler terms, the second law of thermodynamics implies that energy spontaneously flows from regions of higher concentration to regions of lower concentration and that this flow will result in an overall increase in the system's entropy or disorder. This is often described as the "arrow of time," as it explains why time seems to only move forward, and not backward.

The second law also implies that energy cannot be completely converted from one form to another without some energy being lost to the environment, due to the fact that some energy is always converted to heat and dispersed into the surroundings. This is known as the law of energy conservation or the principle of energy degradation.

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Mass is an extensive physical property because it is dependent on the amount or quantity of matter present in a system.

Mass is a measure of the total amount of matter that is present in an object or substance, and it is directly proportional to the number of atoms or molecules that make up that object or substance.

Intensive properties, on the other hand, do not depend on the amount of matter present in a system. Examples of intensive properties include temperature, density, and specific heat. These properties remain constant regardless of the size or quantity of the sample.

In contrast, if you combine two objects, the total mass will be equal to the sum of the individual masses of the objects. This is what makes mass an extensive property. The more mass there is in a system, the more extensive the property becomes.

Therefore, mass is an essential parameter for describing many physical phenomena, such as momentum, energy, and force. It is an essential factor in the laws of physics, and it plays a crucial role in determining the behavior of objects in motion.

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From radio wave to gamma ray, the electromagnetic waves are grouped as Radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays on the basis of frequencies present in the electromagnetic spectrum.

The electromagnetic spectrum is a frequency system that indicates the wavelengths and intensities of electromagnetic radiation.

It is a frequency representation of photon energies, wavelengths, and electromagnetic radiation.

the colours violet, indigo, blue, green, yellow, orange, and red of the electromagnetic spectrum.

In order to make sense of how electromagnetic waves are organised from radio waves to gamma rays,

Examples of frequencies present in the electromagnetic spectrum include radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma rays.

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AC is used for long distance power transmission instead of DC because it is more convenient to step up/down voltage for AC than DC.

The risk of shock from a power source depends on the voltage, current, and resistance of the circuit. In a DC circuit, the voltage and current remain constant, so if there is greater resistance, the current will be higher, leading to a greater risk of shock. In an AC circuit, the voltage and current vary with frequency, so even at higher resistances, the current will remain lower. This means that there is less risk of shock compared to a DC circuit. For example, if there is a 10 ohm resistance in a DC circuit with 100V, the current will be 10A, resulting in 1000W of power dissipation. In an AC circuit with the same resistance and voltage, the current will be much lower because of the frequency of the waveform, resulting in less power dissipation and a lower risk of shock.

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The skaters' momentum is equal but in the opposite direction if they push apart from one another. From the given option, option B is correct.

The momentum is given by the expression p = m×v. Here, the mass is denoted by m and velocity by v. By Newton's third law of motion, when there is a collision between two objects, they both experience force. And this force is equal in terms of magnitude. But opposite in terms of direction.

So one object will gain momentum while the other object loses momentum. In the given situation, the third law of motion comes into action. Therefore, the momentum between the two skaters will be equal but they are in opposite directions. The correct statement is option B.

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The complete question is -

Two skaters stand facing each other. One skater’s mass is 60 kg, and the other’s mass is 72 kg. If the skaters push away from each other without spinning,

A. the 60kg skater travels at a lower momentum.

B. their momentum is equal but opposite.

C. their total momentum doubles

D. their total momentum decreases.

Initial speed of the mug was approximately 3.34 m/s, which is option E. We use conservation of energy.

To solve this problem, we can use the conservation of energy principle to relate the initial speed of the mug to its final position after sliding off the counter.

When the mug slides off the counter, it has some potential energy due to its height above the base of the counter, and some kinetic energy due to its motion. When it lands on the floor, it has lost all of its potential energy but gained some additional kinetic energy due to the work done by gravity.

Let's assume that there is negligible air resistance during the motion of the mug. Then we can use the conservation of energy principle to write:

[tex]mgh + (1/2)mv^2 = (1/2)mv_f^2[/tex]

where m : mass of the mug, g : acceleration due to gravity, h : height of counter, v : initial speed of mug, and v_f : final speed of mug before landing on floor

Since the mug slides off the counter horizontally, it has constant horizontal velocity throughout motion. We use the horizontal distance traveled by the mug to find time of flight:

d = v_f t

d : horizontal distance traveled, and t: time of flight.

Utilize time of flight to calculate final speed of mug before landing:

[tex]h = (1/2) g t^2 = > t = sqrt((2h)/g)v_f = d / t = (d / sqrt((2h)/g))[/tex]

Substitute v_f into conservation of energy eqn and find v:

[tex]mgh + (1/2)mv^2 = (1/2)mv_f^2mgh + (1/2)mv^2 = (1/2)md^2 / t^2[/tex]

Substituting values:

[tex]mgh + (1/2)mv^2 = (1/2)md^2 g / (2h)[/tex]

Simplifying and solving for v, we get:

[tex]v = sqrt((2gh)/3) * sqrt(1 + 2d^2/(3h^2))[/tex]

Put values:

v = [tex]\sqrt{ ((2 * 9.81 m/s^2 * 0.86 m)/3)} * \sqrt{(1 + 2 * (1.4 m)^2 / (3 * (0.86 m)^2))}[/tex]

v ≈ 3.34 m/s

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350 Fahrenheit to Celsius is 177.78°C. The calculation to convert from Fahrenheit to Celsius takes the Fahrenheit temperature, subtracts 32 from it, and then multiplies the result by 5/9.

To convert from Fahrenheit (°F) to Celsius (°C), you can use the following formula:

[tex]C = (F - 32) * 5/9[/tex]

In this case, you would take 350°F and subtract 32 from it, then multiply that number by 5/9:

[tex]C = (350F - 32) * 5/9[/tex]

°C = (318) x 5/9

°C = 177.78°C

Therefore, 350°F is equal to 177.78°C.

This conversion formula takes into account the difference between the two temperature scales, with Fahrenheit being the higher temperature scale and Celsius being the lower temperature scale.

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The image will be located 5 cm to the right of the lens, 5 cm to the left of the object. The image will be inverted, magnified, and real, and it will be 10 cm tall.

Image is a visual representation of a physical object, person, scene, or text. It can be a two-dimensional picture such as a photograph or a drawing, or a three-dimensional picture such as a sculpture or a hologram. Images can also be digital, such as a JPEG file or a GIF file. Images can be used to express emotions, convey information, or capture a moment in time. They can be used for entertainment, education, or advertisement. Images can be found in all forms of media, including newspapers, magazines, books, television, movies, and the internet. Images can also be used to create a mood or atmosphere, or to tell a story.

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96 kg is equal to 211.6 lbs.

The fundamental mass unit in the metric system is the kilogramme (kg). A kilogramme and 1,000 cubic centimetres of water have fairly similar masses.

One pound is approximately equal to 454 grams. One kilogram is the same as 2.20462 lbs.

1 pound is equal to 0.45359237 kilograms.

To convert kilograms (kg) to pounds (lbs), you can use the following formula:

To convert kilograms to pounds, multiply your figure by 2.20462

To convert 96 kg to lbs, you can multiply 96 by 2.20462:

96 kg X 2.20462 lbs/kg

= 211.64472 lbs

Therefore, 96 kg is approximately equal to 211.6 lbs.

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Kilowatt hours are a unit of measurement for the energy required to heat a house. It is the amount of energy used every hour. Hence option B.

Power is a tangible measure of how much work or energy is expended in a certain amount of time. Therefore, power is the rate at which an object expends energy or performs work. Watt is the definition of power. The joule is a unit of both work and energy.

Kilowatts are the unit of measurement for power for higher energy usage. Power input and time are the components of work or energy.

W in J hence equals power in Watt/time in hours.

Kilowatts hours are the unit used to measure domestic energy use. Hence, option B is our answer.

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The term for the electrical force that occurs when two charges have a difference in potential is electric potential difference, or voltage.

When there is a difference in electric potential between two points in an electric circuit, electric charges will flow from the point of higher potential to the point of lower potential, creating an electric current. Voltage is a measure of the energy required to move a unit of electric charge between two points in a circuit.

The unit of measurement for voltage is the volt (V), named after Italian physicist Alessandro Volta. One volt is defined as the electric potential difference between two points in a circuit when one joule of energy is used to move one coulomb of electric charge between those points.

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The average density of white dwarf after sun exhausts its nuclear fuel is [tex]1.84 * 10^9 kg/m^3[/tex]

After sun exhausts its nuclear fuel, it will become a white dwarf and will have same mass and radius as Earth. White dwarf contains matter that is based on degenerated electrons, with high density, mass as much as sun, but volume like that of the sun. They have utilized entire Hydrogen reserves to convert into Nuclear fuel.

The average density of white dwarf = Vw = [tex]4/3 * \pi * w^3[/tex]

Let radius of white dwarf be Rw and radius of Earth be Re.

Density = Mass/Volume

Pw = MR/ ([tex]4/3 * \pi * Re^3[/tex])

Pw = [tex]1.99 * 10^(30)[/tex]/ ([tex]4/3 * \pi * (6.37 * 10^6)^3[/tex])

Pw = [tex]1.84 * 10^9 kg/m^3[/tex]

Therefore, density of White Dwarf equals to [tex]1.84 * 10^9 kg/m^3[/tex] as per scenario presented in question.

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Since, A monotonic gas is adiabatically compressed to 0.125 of its initial volume. Therefore, the rms speed of the system is 0.25 while Mean free path is 0.5 times the first mean free path.

a. The following temperature and volume relationship holds for the adiabatic process:

[tex]TV^{\alpha -1}[/tex] = constant

Therefore,

[tex]T_1V_1^{\alpha -1} = T_2V_2^{\alpha -1}[/tex]

This yields

[tex]\frac{T_2}{T_1} = (\frac{V_1}{V_2} )^{2}[/tex]

In the equation , it is given that V₁/V₂ = 0.125

So, V₁/V₂ = 1/0.125

The adiabatic exponent for monoatomic gases is 0.66. So,

   T₂/T₁ = (0.125)⁰⁶⁶⁻¹

⇒ T₂/T₁ = (0.125)⁰°⁶⁵

⇒ T₂/T₁ = 0.25

As a result, the temperature rises by a factor of ten in this procedure 0.25 .We know that V(rms) is proportional to √T. so we have

[tex]\frac{V_rms_1}{V_rms_2}[/tex] = [tex]\sqrt{\frac{T_2}{T_1} }[/tex] = √0.25 = 0.5

i.e. The rms speed increases by a factor of 0.5.

b. The mean free path is given by in the book

λ = [tex]\frac{V}{4\sqrt{2}\pi Nr^{2} }[/tex]

where

r is The effective radius of the molecule,

V is the volume of the gas and

N is the number of molecules.

All quantities in the λ formula except volume are constant in this process.

Since, λ ∞ ∨ decreases by a factor of 0.5, also decreases by a factor of 0.5.

C. A monoatomic gas's thermal energy is given by

[tex]E_th[/tex] = [tex]_nC_vT[/tex]

Both the number of moles  n , and ,

the molar specific heat at constant volume [tex]C_v[/tex] are constant in this process so the only thing that changes is the temperature.

Since [tex]E_th[/tex] ∞ T since we have found that the temperature increases by a factor of 0.25 then [tex]E_th[/tex] also increases by a factor of 0.25 .

d. The molar specific heat of a monoatomic gas is just a constant equal to [tex]C_v =[/tex] 0.5R.

So, it doesn't change in this process.

Therefore,

The rms speed of the system is 0.25 while Mean free path is 0.5 times the first mean free path.

Complete Question:

A monatomic gas is adiabatically compressed to 0.125 of its initial volume. Do each of the following quantities change?

A) What is rms speed?

B) What is the mean free path?

C) What is the thermal energy of gas?

D) What is the molar specific at a constant volume?

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