Third Law of Motion
For every action, there is an equal and opposite reaction .
I hate physics ! Hope you guys can help !

Initially, the two capacitors are charged up to the same voltage V, so the charge on the capacitor of capacitance C is Q = CV, and the charge on the capacitor of capacitance 2C is Q' = 2CV.

When the battery is removed and a dielectric medium of constant K is inserted between the plates of the first capacitor (of capacitance C), the capacitance of this capacitor becomes KC. The capacitance of the second capacitor remains the same at 2C.

The total charge on the capacitors remains the same, as no charge is lost or gained during this process. Therefore, we have:

Q = Q' = 2CV

After the insertion of the dielectric medium, the potential difference across the two capacitors will be different, as their capacitances have changed. Let V1 be the new potential difference across the capacitor of capacitance KC, and V2 be the potential difference across the capacitor of capacitance 2C.

We know that the total charge on the capacitors remains the same, so we can write:

Q = C1V1 + C2V2

where C1 = KC is the capacitance of the first capacitor (after insertion of the dielectric), and C2 = 2C is the capacitance of the second capacitor.

Substituting the values of C1, C2 and Q, we get:

CV = KV1 + 2CV2

Simplifying, we get:

V1 = (C/K) V - 2V2

But we also know that the potential difference across the two capacitors must be the same, i.e., V = V1 + V2. Substituting the value of V1 in this equation, we get:

V = [(C/K) V - 2V2] + V2

Simplifying, we get:

V2 = (1/3) V/K

Therefore, the potential difference across the capacitor of capacitance KC (after insertion of the dielectric) is:

V1 = (C/K) V - 2V2 = (5/3) V - (2/3) V/K

Thus, the potential on each capacitor after the insertion of the dielectric is V1 = (5/3) V - (2/3) V/K for the capacitor of capacitance KC, and V2 = (1/3) V/K for the capacitor of capacitance 2C.

(a) Time taken, T is 11.83 s

(b) Acceleration is 1.428 m/s²

A body is said to be in uniform acceleration when it is moving in a straight line with an increase in velocity in equal intervals of time.

Here,

s = 100 m

v = u + at

a = (v - u)/t = (10 - 0)/7

a = 10/7 m/s²

(a) s = ut + 1/2 at²

   100 = 0 + 1/2 x 10/7 x t²

    t² = 140

    t = √140 = 11.83 s

(b) Acceleration, a = 10/7 =1.428 m/s²

Hence,

(a) Time taken, T is 11.83 s

(b) Acceleration is 1.428 m/s²

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Answer:

Since the net torque is negative, this means that the counterclockwise torque is greater than the clockwise torque. As a result, the wheel will rotate in the counterclockwise direction. Therefore, the answer is:

The wheel will rotate counterclockwise.

Explanation:

To determine the resulting motion of the wheel, we need to calculate the net torque acting on the wheel. Clockwise torque is positive, while counterclockwise torque is negative. Therefore, the net torque can be calculated as follows:

Net torque = (Clockwise torque) - (Counterclockwise torque)

Net torque = (24.4 N) x (0.22 m) - (7.9 N) x (0.74 m)

Net torque = 5.368 Nm - 5.846 Nm

Net torque = -0.478 Nm

Self-care can be demonstrated in a healthy way by recalling a happy memory.

The first step toward self-care is allowing yourself to be honest and vulnerable. Through self-reflection, you can at last let out all that you've been keeping down. Your journal is your very own private platform on which you can record your successes, anxieties, and worries.

Taking care of oneself exercises can go from proactive tasks, for example, practicing and practicing good eating habits, to mental exercises like perusing a book or rehearsing care, to otherworldly or social exercises, for example, imploring or getting lunch with a companion.

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The gravitational potential energy of the object is -176J. Option 4 is the answer.

The gravitational potential energy (U) of an object of mass (m) at a height (h) relative to a reference point where gravitational potential energy is defined to be zero is given by:

U = mgh

where g is the acceleration due to gravity (9.81 m/s^2).

In this problem, the object is 3.00 m below the ground relative to a point 5.00 m below the ground. So, the height of the object relative to the reference point is:

h = -3.00 m - (-5.00 m) = 2.00 m

Note that we use a negative sign for h because the object is below the reference point.

Plugging in the values, we get:

U = (9.00 kg) x (9.81 m/s^2) x (-2.00 m) = -176.22 J

Rounding off to two significant figures, the gravitational potential energy of the object is -176 J. Therefore, the answer is -176J.

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Answer: 900 m

Explanation: If you walk at a speed of 5 meters per second for 3 minutes, or 180 seconds, then you will have walked 900 meters. This can be seen in the equation [tex]x=x_{0}+v_{x0}t+\frac{1}{2} a_{x}t^2[/tex]. As the velocity is constant (no acceleration) and the initial position is zero, plugging in known values for v and t, you can solve for x of 900 m.

Answer:

d

Explanation:

Write a function that takes in two parameters and returns the average of those two parameters.

Parameters are variables that are used to control or adjust the behavior of a particular system or model. They are used to improve the accuracy of a model or to establish baseline values for comparison. Parameters may be used to adjust the size or complexity of a system, the level of accuracy of a model, or the range of a system's inputs. Parameters can also be used to identify specific characteristics of a system, such as its maximum or minimum values, or to monitor its performance. Parameters are an important tool in helping to understand and control the behavior of a system.

The function below takes in two parameters, a and b, and returns the average of those two parameters.
function avg(a, b) {return (a + b) / 2;}

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Answer:

46.6 m/s in the positive y-direction.

Explanation:

The change in momentum of the ball is 1.0 kg m/s [E].

The change in momentum of the ball can be calculated using the formula:

Δp = p₂ - p₁

where Δp is the change in momentum, p₂ is the final momentum, and p₁ is the initial momentum.

The momentum of an object is defined as the product of its mass and velocity, so we can calculate the initial and final momenta of the ball as follows:

p₁ = m₁v₁ = (0.1 kg)(5 m/s [W]) = -0.5 kg m/s

p₂ = m₁v₂ = (0.1 kg)(5 m/s [E]) = 0.5 kg m/s

Substituting these values into the formula for Δp, we get:

Δp = p₂ - p₁ = (0.5 kg m/s) - (-0.5 kg m/s) = 1.0 kg m/s [E]

Therefore, the change in momentum of the ball is 1.0 kg m/s [E] using Δp = p₂ - p₁.

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Answer:40m East

Explanation:

Answer & Explanation:

Friction is useful in the following situations:

The brakes on a bike: Friction is necessary in the brakes of a bike as it allows the brake pads to grip onto the rim or disc, which helps to slow down or stop the bike.

Inside the hub of the wheel on a bike: Friction is necessary to prevent the wheel from spinning too freely, which could lead to loss of control or accidents. The hub's bearings require just the right amount of friction to keep the wheel spinning freely but not too fast.

Friction is a nuisance in the following situation:

The moving parts of the chain and gears: Friction between the moving parts of the chain and gears can cause the bike to lose efficiency and require more effort from the rider. This can cause wear and tear on the bike and make it harder to ride.

Newton's Law of Cooling states that the rate of cooling of an object is proportional to the temperature difference between the object and its surroundings.

dQ/dt = -k(T - Troom)

where Q is the amount of heat in the water, t is time, k is a constant, T is the temperature of the water, and Troom is the room temperature.

Using the given information, we can set up the following system of equations:

100 = k(100 - 21) (at t = 0) 65 = k(100 - 21) e⁽⁻¹⁰⁾k (at t = 10)

Solving for k in the first equation gives k = 1/79. Plugging this value into the second equation and solving for T gives T = 36.1 degrees Celsius.

Now, to find the temperature after an additional 5 minutes, we can use the same equation with a new time value:

T = (65 - Troom) e^(-k(10+5)) + Troom

Plugging in the values we know gives T = 30.4 degrees Celsius.

Therefore, the temperature of the water after an additional 5 minutes of cooling is approximately 30.4 degrees Celsius

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If object 1 and 2 attracts each other with an electrostatic force of 18N and is separated by some distance, Then if that distance will be halved then the electrostatic force will be = 18×4=72N.

It states that" The force between two charges is directly proportional to the product of their magnitude and inversely proportional to the square of the distance between the charges and acts along the line joining the two charges."

Mathematically,

F∝q1×q2

F∝1/[tex]r^{2}[/tex]

i.e

F= k [tex]\frac{q1 *q2}{ r^{2} }[/tex]

Where q1, q2= magnitude of the charge in C.

and r = the distance between them in m.

k= constant of proportionality.

Question given data,

F1=18N

let r=x (say)

then F1=18=k [tex]\frac{q1 *q2}{ x^{2} }[/tex].....................(1)

if r is halved i.e r=x/2

now new force

F2=k[tex]\frac{q1 *q2}{ (x/2)^{2} }[/tex]

F2=4×k[tex]\frac{q1 *q2}{ x^{2} }[/tex]

F2=4×F1....................(∵F1=k [tex]\frac{q1 *q2}{ x^{2} }[/tex])

=4×18..............................(∵F1=18)

F2=72N

Hence The force between two charged particles when the distance between them is halved is 72N.

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The change in momentum of the ball is 1.0 kg m/s [E].

The change in momentum of the ball can be calculated using the momentum equation:

Δp = pf - pi

Where

The momentum of an object can be calculated as the product of its mass and velocity:

p = mv

Where

Using the given values, we can calculate the initial momentum of the ball:

pi = mvi = (0.1 kg)(5 m/s [W]) = 0.5 kg m/s [W]

Similarly, we can calculate the final momentum of the ball:

pf = mvf = (0.1 kg)(5 m/s [E]) = 0.5 kg m/s [E]

Substituting these values into the momentum equation, we get:

Δp = pf - pi = 0.5 kg m/s [E] - 0.5 kg m/s [W] = 1.0 kg m/s [E]

Therefore, the change in momentum of the ball is 1.0 kg m/s [E].

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The location at the point where electric field becomes zero is at 3.6m, when a positive point charge Q1= 2.6×10−5 C is fixed at the origin and a negative point charge Q2= −5.1×10−6 C is fixed at 2.0m.

Electric field is field around electrically charged particle where columbic force of attraction or repulsion can be experienced by other charged particles. It is denoted by letter E and it's SI unit is V/m Volt per meter or N/C newton per coulomb.

Electric field comes inward to the center of the negative charge and it is going outward for positive charge.

Given,

Q₁= 2.6×10⁻⁵ C

Q₂= −5.1×10⁻⁶ C

x = 2.0m,

In this case there are two charges, one at the origin and other is at 2m distance from origin. Both these charges are kept along positive x axis. looking at the situation there are 2 cases

Case 1 ( electric field in between two charges)

in this case direction of the resultant electric field in between two charges is along positive x direction (direction of electric field of positive charge is outward along x axis which is along positive x direction and direction of electric field of negative charge is inward along x axis which is also in positive x direction).

Case 2 ( right side of the negative charge)

In this case direction of electric field of positive charge is outward along x axis which is along positive x direction and direction of electric field of negative charge is inward along x axis but which is in opposite direction of electric field due to positive charge.

Hence our electric field is zero at right side of the negative charge.

on right side, electric fields due to both charges are opposite to each other then we can write mathematically E₁ - E₂ = 0 at the point where resultant electric field is zero. Where E₁ is elctric field due to positive charge and E₂ is electric field due to negative charge.

E₁ - E₂ = 0

E₁ = E₂

[tex]\frac{kQ_{1}}{x^{2}} = \frac{kQ_{2} }{(x+2)^{2}}[/tex]

[tex]\frac{Q_{1}}{x^{2}} = \frac{Q_{2} }{(x+2)^{2}}[/tex]

[tex]\frac{Q_{1}}{Q_{2} }} = \frac{x^{2} }{(x+2)^{2}}[/tex]

(2.6×10⁻⁵ C ÷ -5.1×10⁻⁶ C)  [tex]= \frac{x^{2} }{(x+2)^{2}}[/tex]

[tex]\frac{x^{2} }{(x+2)^{2}}[/tex] = 5.098 ≅ -5.1

x² = 5.1 (x+2)²

x = 2.25(x+2)

x=2.25x + 4.5

x(1-2.25) = 4.5

x(-1.25) = 4.5

x = 3.6m

Hence Electric field is zero at 3.6m from origin.

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The correct responses are C because opals are found in sedimentary and metamorphic rocks.

3 Location There are two different varieties of opal that are found: volcanic opal, which fills vesicles and fissures in igneous rocks, and the more well-known sedimentary or sandstone type, which is found in Australia's major areas. Volcanic opal makes up the majority of deposits around the world, and a lot of it is prone to crazing.

A synthetic stone may be flawlessly flat since the two pieces are flattened so they may be bonded together, however the majority of real strong opals have an imperfection in this area that is curved or bumpy due to their natural development.

Thus it's obvious that Position 3 in the image depicts where opal is located.

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Complete question -

The locations of mineral and gem formation depend on different Earth processes. Some gems need heat, extreme pressure, or even a certain type of rock layer to form.

Which location in the figure shows where opal is most likely to form?

Select the correct location.

To lift an object off the ground a distance of 3m, Grace applies 50N of force and generates 75J/s. The time taken by Grace for the lift is 2 seconds.

A force is an effect that changes, or accelerates, the velocity of a mass-moving object (such as one that is travelling from a state of rest). It is a vector quantity since it can be a push or a pull and always has magnitude and direction. It is denoted by the letter F and is measured in newtons (N), the SI unit of force.

According to Newton's second law, an object's net force is equal to the speed at which its momentum is changing over time. This rule suggests that the acceleration of an object is directly proportional to the net force exerted on the object, is in the direction of the net force, and is inversely proportional to the mass of the object if its mass is constant.

According to the equation,

P = [tex]\frac{W}{t}[/tex]

where,

P is the power,

W is the work done and,

t is the time taken.

W = F×S

where,

F is the applied force and

S is the distance.

Substituting the values and solving for t,

time taken = 2 seconds

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The angle of application of the force ​ is theta = arccos(500 J / (F * 20 m))

We can use the work-energy principle to solve this problem. The work done by the gardener's force is equal to the change in kinetic energy of the mower. Since the mower starts from rest, the initial kinetic energy is zero. Therefore, the work done by the gardener's force is equal to the final kinetic energy of the mower:

Work = Change in kinetic energy

500 J = (1/2)mv^2

where m is the mass of the mower and v is its final velocity.

Since we don't know the mass of the mower or its final velocity, we cannot directly solve for the angle of application of the force. However, we can use the fact that the work done by a force is equal to the product of the magnitude of the force, the displacement, and the cosine of the angle between the force and the displacement:

Work = Fd cos(theta)

where F is the magnitude of the force, d is the displacement, and theta is the angle between the force and the displacement.

Substituting the given values, we have:

500 J = F(20 m) cos(theta)

Solving for the cosine of the angle:

cos(theta) = 500 J / (F * 20 m)

Since we don't know the magnitude of the force, we cannot directly solve for the angle. However, we can rearrange the equation to isolate the angle:

theta = arccos(500 J / (F * 20 m))

Therefore,  we need to know the magnitude of the force to find the angle of application.

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NASA's Juno spacecraft has been orbiting Jupiter since 2016, providing scientists with unprecedented views of the gas giant. One of the most striking features of Jupiter is its Great Red Spot, a massive storm that has been raging for centuries.

What is Great Red Spot?

On Jupiter, a huge storm known as the Big Red Spot has been raging for at least 400 years and possibly longer. It is a zone of persistently high pressure that is present in the planet's southern hemisphere. The storm, which is thought to be around two to three times the size of our globe, is so enormous that it could easily devour the entire planet.

When it began orbiting Jupiter in 2016, NASA's Juno probe has given scientists hitherto unheard-of pictures of the gas giant. The Great Red Spot, a huge storm that has been raging for ages, is one of Jupiter's most stunning characteristics. The polar regions of Jupiter are however home to numerous additional storms, including sizable and intricate cyclones.

The scale and intricacy of the cyclones on Jupiter's poles, especially a centre cyclone on the north pole known as "Jupiter's North Pole Hexagon," first astounded scientists. These storms can endure for decades or even centuries and are more larger and better organised than any cyclones on Earth.

It's not apparent to me which tornado you're referring about in particular. But, researchers looking at Jupiter's The variety and complexity of these storms have probably fascinated storms, and they may be attempting to comprehend the underlying physical mechanisms. Jupiter's storms can be studied to learn more about planetary weather, including our own.

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The terminal velocity of the block is approximately 2.08 m/s when it is traveling downward with a drag coefficient of 0.822.

How to calculate terminal velocity?

To calculate the terminal velocity of the block, we need to use the equation for terminal velocity which is:

v_terminal = sqrt((2mg)/(ρAC_d))

where:

First, let's convert the dimensions of the block from centimeters to meters:

width = 16.0 cm = 0.16 m

length = 19.0 cm = 0.19 m

height = 25.0 cm = 0.25 m

Next, let's calculate the cross-sectional area of the block:

A = width * length = 0.16 m * 0.19 m = 0.0304 m^2

Now we can substitute the values into the equation for terminal velocity:

v_terminal = sqrt((24.55 kg9.81 m/s^2)/(1.43 kg/m^30.0304 m^20.822))

v_terminal = 2.08 m/s

Therefore, the terminal velocity of the block is approximately 2.08 m/s when it is traveling downward with a drag coefficient of 0.822.

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Answer:

f =ma

hope helps ..... ...

If a clock expends 2 W of power from a 1.5 V battery, 1.3A of current is supplying the clock

What is meant byelectric current ?

When an external voltage is given to one of the conductor's ends, the movement of particles known as an electric current begins. As a result, the negatively charged electrons that are drawn to the positive terminal of the exterior voltage are subject to an electric field.

The current through a conductor is proportional to the voltage across the conductor, according to Ohm's rule. As long as the temperature (and other physical factors) stay constant, this is true for many materials, including metals. The connection between voltage, current, and resistance in an electrical circuit can be calculated using Ohm's Law.

P ⇒ IV

I ⇒ P/V ⇒ 2/1.5 i.e. 1.3A

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Sound waves can travel through a medium (such as air, water, or solid objects) and can reflect or diffract around obstacles, allowing them to be heard even when there is no direct path to the source of the sound.

When sound waves encounter an obstacle, they can either reflect or diffract. Reflection occurs when sound waves bounce off a surface and return in the direction they came from. Diffracton occurs when sound waves bend around an obstacle and continue in a different direction. This allows sound waves to travel around corners and through small openings.

For example, if someone is talking behind a wall, the sound waves they produce can diffract around the wall and reach your ears, allowing you to hear them. Similarly, when you hear an echo, it is because sound waves have reflected off a surface and reached your ears.

In some cases, sound waves can even travel through solid objects. This is known as vibration or bone conduction. For example, when you hear your own voice or a piece of music through a set of headphones, the sound waves are transmitted through the headphones and vibrate the bones in your ear, which sends signals to your brain that you perceive as sound.

In summary, sound waves can travel through a medium and reflect or diffract around obstacles, allowing them to be heard even when there is no direct path to the source of the sound.

Kinship charts, often known as kinship diagrams, show relationships. Similar to a family tree chart or a pedigree chart, you can use a kinship diagram to display your genealogy.

An illustration of relationships in a family, community, or culture is called a kinship diagram. Kinship charts resemble family trees in many ways. Therefore, kinship diagrams are used more broadly to comprehend how most families in a culture function rather than identifying individual names or modeling the diagram after one family.

Kinship diagrams enable cultural anthropologists to swiftly sketch out relationships between people throughout the interview process. Also, it offers a way to represent kinship patterns visually in cultures without the use of names, which can be confusing, and it protects people's privacy.

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When a ball leaves a ramp with a horizontal velocity, it will follow a curved path known as a projectile motion. The ball will move both horizontally and vertically, with the horizontal velocity remaining constant and the vertical velocity changing due to the force of gravity.

At the point where the ball leaves the ramp, it will have a certain height and horizontal distance from the starting point. As it moves through the air, it will travel a certain horizontal distance before landing on the ground at a lower height.

Projectile motion is a type of motion in which an object is launched or thrown into the air, and then moves under the influence of gravity and air resistance. In projectile motion, the object follows a curved path called a trajectory, which consists of both horizontal and vertical components.

The motion of a projectile can be described in terms of its velocity, acceleration, and displacement. At the instant of launch, the object has an initial velocity that can be broken down into horizontal and vertical components. The horizontal component of velocity remains constant throughout the motion, while the vertical component changes due to the effect of gravity.

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Answer:

1 Minutes =2Pi/60

21 Minutes=2Pi/60*21

so the answer is, 2.198

Explanation:

we know that

there is 60 min one hour

so the there is 2Pi radians

so 21 minutes is 21/60

and we know the clock hand will travel anticlock wise

and a full circle measures 2Pi radians

and we know that one minute =2Pi /60 radians

so, 21 minutes = (21Pi/60)*60

(Pi=3.14)

21 minutes = 2.19

The bike is going at a speed of 7.76 m/s (or about 28 km/h) while you are pushing it with a force of 190 N over a distance of 2.0 m.

We can use the work-energy principle to determine the final velocity of the bike. The work-energy principle states that the net work done on an object is equal to its change in kinetic energy. In this case, the net work is done by the force that you apply to the bike over a distance of 2.0 m:

Net work = force x distance x cos(theta) = 190 N x 2.0 m x cos(0) = 380 J

The change in kinetic energy of the bike is given by:

[tex]Delta K = 1/2 mv^2 - 0[/tex]

where m is the mass of the bike and v is its final velocity.

Setting the net work equal to the change in kinetic energy, we have:

[tex]380 J = 1/2 (22 kg) v^2[/tex]

Solving for v, we get:

[tex]v = sqrt(2 x 380 J / 22 kg) = 7.76 m/s[/tex]

Therefore, the bike is going at a speed of 7.76 m/s (or about 28 km/h) while you are pushing it with a force of 190 N over a distance of 2.0 m.

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Explanation:

E1 = k Q1 / (0.075 m)^2

= 9 x 10^9 Nm^2/C^2 * 10 x 10^-9 C / 0.075^2 m^2

= 400 N/C

E2 = k Q2 / (0.075 m)^2

= 9 x 10^9 Nm^2/C^2 * (-3 x 10^-9 C) / 0.075^2 m^2

= -120 N/C

Since the electric fields due to the two charges are in opposite directions, we can find the net electric field at the midway point by taking the difference between the two:

E = E1 - E2

= 400 N/C - (-120 N/C)

= 520 N/C

At wavelengths [tex]$644.44 \mathrm{~nm}$[/tex] and[tex]$483.33 \mathrm{~nm}$[/tex], the stars [tex]$\mathrm{A}$[/tex] and B have maximum intensities. temperature of most intense star is 6,502.242K

Temperature of star [tex]$\mathrm{A}$[/tex] is [tex]$\mathrm{TA}[/tex]=4,500 [tex]\mathrm{~K}$.[/tex]

Temperature of star $B$ is TB $=6,000 [tex]\mathrm{~K}$.[/tex]

Wavelength of most intense star is [tex]$\lambda_0=446[/tex]

We have to find wavelengths corresponding to maximum intensity of stars at temperatures [tex]$T \wedge$[/tex]and TB and wavelength of most intense star.

From Wein's law, we have

[tex]$\lambda_{\mathrm{nm}}=\frac{2.90 \times 106}{\mathrm{Tk}_{\mathrm{k}}}$[/tex]

Where [tex]$\lambda_{\mathrm{nm}}$[/tex] is in nanometers and [tex]$\mathrm{T} k$[/tex] is in Kelvin.

For Star A, equation (1) becomes

[tex]$\lambda_{\mathrm{A}}=\frac{2.90 \times 106}{\mathrm{TA}}$[/tex]

Using values in (2), we get

[tex]\lambda_{\mathrm{A}}[/tex] & =[tex]\frac{2.90 \times 106}{4,500 \mathrm{~K}} \\[/tex]& =644.44 [tex]\mathrm{~nm}[/tex]

For Star B equation (1) becomes

[tex]$$\lambda_{\mathrm{B}}=\frac{2.90 \times 106}{\mathrm{Tr}}$$[/tex]

Let the temperature of the most intense star is[tex]$\mathrm{T} 0$.[/tex] Now, equation (1) for most intense star becomes [tex]$\lambda_0=\frac{2.90 \times 106}{T_0}$[/tex]

From above equation, we have

[tex]$\mathrm{T}_0=\frac{2.90 \times 106}{\lambda_0}$[/tex]

Using values in (3), we get

[tex]$$\begin{aligned}\lambda_{\mathrm{B}} & =\frac{2.90 \times 106}{6,000 \mathrm{~K}} \\& =483.33 \mathrm{~nm}\end{aligned}$$[/tex]

Using vales in (4), we get

[tex]\begin{aligned}\mathrm{T}_0 & =\frac{2.90 \times 10_6}{446 \mathrm{~nm}} \\= & 6,502.242 \mathrm{~K}\end{aligned}[/tex]

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