relative velocity: a small boat is moving at a velocity of 3.35 m/s when it is accelerated by a river current perpendicular to the initial direction of motion. if the acceleration of the current is 0.750 m/s2, what will be the new velocity of the boat after 33.5 s?

It takes light approximately 39.5 minutes to travel the distance from the Sun to Jupiter.

Since it takes light approximately 8 minutes to reach the Earth from the surface of the sun, we know that the distance between the sun and the Earth is 1 astronomical unit (1 au).

Therefore, to find out how long it takes light to travel 5 au (the distance between Jupiter and the sun), we can use the following formula:

time = distance ÷ speed of light

The speed of light is approximately 299,792,458 meters per second.

So,

time = 5 au x 149,597,870,700 meters/au ÷ 299,792,458 meters/second
time = 39.5 minutes

Therefore, it takes approximately 39.5 minutes for light to travel from the surface of the sun to Jupiter.

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The mass, 0.950 kg mass spun in a circle on a string of radius 60.0 cm and  centripetal force is 12.0 N, travels at a velocity of 2.75 m/s.

To find the velocity of the 0.950 kg mass, we can use the formula for centripetal force:

Fc = m * v² / r

where Fc is the centripetal force (12.0 N), m is the mass (0.950 kg), v is the velocity, and r is the radius (0.60 m).

1. Rearrange the formula to solve for velocity (v):

v² = (Fc * r) / m

2. Substitute the given values into the equation:

v² = (12.0 N * 0.60 m) / 0.950 kg

3. Calculate the result:

v² = 7.578947368

4. Take the square root of the result to find the velocity (v):

v = √7.578947368 ≈ 2.75 m/s

So, the velocity of the 0.950 kg mass is approximately 2.75 m/s.

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The period of the pendulum on this planet would be 2.51 seconds to three significant digits.

The period of a pendulum is given by the formula:

T = 2π√(L/g)

where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity.

Since the length of the pendulum is not changing, we can see that the period is directly proportional to the square root of the acceleration due to gravity.

On the other planet, the acceleration due to gravity will be:

[tex]g' = (GM')/r'^2[/tex]

where G is the gravitational constant, M' is the mass of the planet, and r' is the radius of the planet.

We are told that this planet has 2.5 times the mass of the Earth and 2 times the Earth's radius. Therefore,

[tex]M' = 2.5M[/tex]

[tex]r' = 2r[/tex]

Substituting these values into the formula for g', we get:

[tex]g' = (GM')/r'^2 = (G(2.5M))/(4r^2) = (5/8)g[/tex]

So the acceleration due to gravity on this planet is (5/8) times the acceleration due to gravity on Earth.

Using the formula for the period of a pendulum, we can see that the period of the pendulum on this planet would be:

[tex]T' = 2π√(L/g') = 2π√(L/(5/8)g) = 2.51s[/tex]

Therefore, the period of the pendulum on this planet would be 2.51 seconds to three significant digits.

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The speed of current of the river is 2.5 km/hr and the motorboat can travel at a speed of 20 km/hr in still water, allowing it to travel 20 km against the current and 180 km with the current in 8 hours.

Let the speed of current be represented by v and the speed of the motorboat in still water be represented by b.

We know that the distance traveled is equal to the rate multiplied by the time:

distance = rate x time

Against the current:

20 = (b - v) x 8

With the current:

180 = (b + v) x 8

Solving these two equations simultaneously for b and v, we get:

b = 25 km/hr

v = 2.5 km/hr

Therefore, the speed of the current of the river is 2.5 km/hr.

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Option C) is correct in determining its mass from its gravitational pull on a spacecraft, satellite, or planet. Knowing the mass and size of an asteroid allows us to calculate its density.

Option A) is incorrect because reflectivity only tells us about the asteroid's surface properties, not its density. Option B) is incorrect because brightness variations during rotation do not give us enough information to determine density. Option D) and E) are methods of studying asteroids but are not directly related to determining density.

Knowing the size of an asteroid alone is not enough to determine its density, as different materials can have different densities at the same size. By measuring the gravitational pull of the asteroid on a spacecraft, satellite, or planet, we can determine its mass. Once we have the mass and the size, we can calculate the asteroid's density. Methods such as radar mapping and spectroscopic imaging can provide additional information about the asteroid's composition, but they are not directly used to determine its density.

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C) calculating its mass based on the gravitational attraction it exerts on a satellite, planet, or spacecraft.

We can determine an asteroid's mass by observing the gravitational pull it has on a neighbouring body, like a planet, satellite, or spacecraft. We can determine the asteroid's density once we know its mass and size. The gravitational force of an object will be stronger the denser it is. As a result, an asteroid must be denser the more massive it is for a given size.

The density of an asteroid can be determined using this method, which is especially helpful for small or erratic-shaped asteroids that are challenging to see using other techniques like radar mapping or spectroscopic imaging. Additionally, it can offer crucial details on the asteroid's makeup and structure, which can aid researchers in understanding the asteroid's formation and evolution.

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Answer:

The mass of the apple is 0.49kg

Explanation:

Potential energy=mgh

P=mgh

6=m×1.22×10

6=12.2m

divide both sides by 12.2

m=6/12.2

m=0.49kg

To determine the fraction of the wood submerged in water, we need to compare the density of the wood to the density of water.

The density of water is 1.000 g/cm3 at standard temperature and pressure.

If the wood has a density of 0.600 g/cm3, it is less dense than water, which means it will float on water.

To determine the fraction of the wood submerged in water, we can use the following formula:

fraction submerged = (volume submerged) / (total volume)

Since the wood floats on water, the volume of water displaced by the wood is equal to the volume of the submerged portion of the wood.

The total volume of the wood is equal to its mass divided by its density:

total volume = mass / density

We don't have the mass of the wood, but we can use any arbitrary value to determine the fraction submerged.

Let's assume the wood has a mass of 100 g.

total volume = mass / density = 100 g / 0.600 g/cm3 = 166.67 cm3

Now, let's assume that when the wood is submerged in water, it displaces 80 cm3 of water.

fraction submerged = (volume submerged) / (total volume) = 80 cm3 / 166.67 cm3 = 0.48

Therefore, approximately 48% of the wood is submerged in water.

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The period of the asteroid in terms of Earth years is approximately 8.13 years. This means that it takes the asteroid 8.13 years to complete one orbit around the sun, while the Earth takes one year to complete its orbit.

To determine the period of an asteroid orbiting the sun, we can use Kepler's Third Law, which states that the square of the period of an object in orbit around the sun is proportional to the cube of its average distance from the sun. Mathematically, this can be expressed as:

[tex]\frac{(T_{\text{asteroid}})^2}{(T_{\text{earth}})^2} = \left(\frac{d_{\text{asteroid}}}{d_{\text{earth}}}\right)^3[/tex]

where T is the period of the asteroid and earth respectively, and d is the average distance from the sun.

Given that the asteroid is 4.5 times farther from the sun than the Earth, we can plug this ratio into the equation:

[tex]\frac{(T_{\text{asteroid}})^2}{(1 \text{ year})^2} = 4.5^3[/tex]

Solving for T asteroid, we get:

[tex](T_{\text{asteroid}})^2 = 4.5^3[/tex]

[tex]T_{\text{asteroid}} = \sqrt{4.5^3}[/tex] = 8.13 years

It is important to note that this calculation assumes a circular orbit, which is not always the case for asteroids.

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The two forces on Earth that could change the motion of an object are friction and gravity.

Friction is a force that opposes the motion of an object when it is in contact with another surface. It can cause an object to slow down or come to a stop.

Gravity is a force of attraction between two objects, and it can cause an object to accelerate toward the center of the earth or towards another massive object. The gravitational force on an object depends on its mass and the distance between it and the other object.

Speed and acceleration are not forces, but rather measures of motion. Heat and light are also not forces that can change the motion of an object, but rather forms of energy that can be transferred to an object and affect its temperature or behavior. Direction and time are not forces, but concepts related to an object's motion.

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The acceleration of the box is [tex]4.02 m/s^2[/tex]to the right.

To find the net force acting on the box, we need to add up the individual forces acting on it. The horizontal forces cancel each other out (9.5 N to the right - 6.2 N to the left = 3.3 N to the right), and the vertical forces also cancel each other out (8.0 N up - 8.0 N down = 0 N).

So the net force acting on the box is 3.3 N to the right. We can use Newton's second law of motion, which states that force equals mass times acceleration (F=ma), to find the acceleration of the box.

Rearranging the equation, we get a = F/m. Plugging in the values, we get

a = 3.3 N / 0.82 kg

a = [tex]4.02 m/s^2 to the right[/tex]

Therefore, the acceleration of the box is[tex]4.02 m/s^2[/tex] to the right.

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The box is under a net force of 1.3 N to the right. The box accelerates to the right at a rate of 1.6 m/s2.

By deducting the forces acting to the left (6.2 N) and the forces acting to the right (9.5 N), we can get the net force, which is 3.3 N to the right. In order to get a net force of 0 N in the vertical direction, we must first subtract the forces acting upward (8.0 N) from the forces acting downward (8.0 N). The box won't accelerate vertically because there is no net force acting in that direction. The box will therefore move more quickly to the right due to the net force of 3.3 N. We may calculate the acceleration to be 1.6 m/s2 to the right using Newton's second law, F = ma.

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The maximum altitude of the rocket is 1,542 km. The result is obtained by using the kinematical equation.

There are 3 main kinematical equations. They are

Where vf is the final velocity, vi is the initial velocity, g is the acceleration due to gravity, and h is the displacement.

We have initial velocity 5.5 km/s. The question is to find the maximum altitude.

Let's convert the initial velocity from km/s to m/s.

5.5 km/s = 5,500 m/s

In this case, at the maximum altitude, the final velocity is zero, vf = 0. While the acceleration due to gravity is g = -9.81 m/s².

We can use the second equation to get the maximum altitude, h
vf² = vi² + 2gh

0 = 5,500² - 2(9.81)h

30,250,000 = 19.62 h

h = 1,541,794 meters

h ≈ 1,542 km

Therefore, the maximum altitude the rocket will reach is approximately 1,542 km.

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The orbital period of the Earth around the Sun is determined by its distance from the Sun and its mass. If the Earth had twice its present mass but orbited at the same distance from the Sun, its gravitational attraction to the Sun would be stronger, resulting in a longer orbital period. Using Kepler's third law of planetary motion, we can calculate the new orbital period as follows:

T^2 = (4π^2/G) x (r^3/m)

where T is the orbital period, G is the gravitational constant, r is the distance from the Earth to the Sun, and m is the mass of the Earth.

Plugging in the values, we get:

T^2 = (4π^2/6.6743 x 10^-11) x [(149.6 x 10^6)^3 / (2 x 5.9722 x 10^24)]
T^2 = 1.085 x 10^20
T = √(1.085 x 10^20)
T = 1.09 x 10^10 seconds

Converting this to years, we get:
T = 346 years

Therefore, if the Earth had twice its present mass but orbited at the same distance from the Sun as it does now, its orbital period would be approximately 346 years.

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The minimum energy input necessary to place the satellite in orbit at the equator is the sum of the gravitational potential energy and kinetic energy.

To determine the minimum energy input necessary to place a satellite in orbit starting from the Earth's surface at the equator, we will use these terms: gravitational potential energy (GPE), kinetic energy (KE), and escape velocity.

1: Calculate gravitational potential energy (GPE)
GPE = m * g * h
where m is the mass of the satellite, g is the gravitational acceleration (9.81 m/s²), and h is the height above Earth's surface (the Earth's radius, 6371 km).

2: Calculate the necessary orbital velocity
Orbital velocity, [tex]v_{orbit} = \sqrt{G * M / (R + h)}[/tex]
where G is the gravitational constant (6.674 x 10⁻¹¹ N m²/kg²), M is the mass of the Earth (5.972 x 10²⁴ kg), R is Earth's radius, and h is the height above Earth's surface.

3: Calculate the necessary kinetic energy (KE)
[tex]KE = 0.5 * m * v_{orbit}^2[/tex]

4: Calculate the minimum energy input
Minimum energy input = GPE + KE

By following these steps and plugging in the specific values for your satellite's mass and desired orbit, you can determine the minimum energy input necessary to place the satellite in orbit starting from the Earth's surface at the equator.

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The energy needed to reach Earth's escape velocity, or around 11.2 km/s, is the minimal amount of energy required to launch a satellite into orbit.

A satellite needs to be moving at what is known as orbital velocity in order to remain in orbit around the Earth. The amount of energy needed to reach this velocity varies according to the mass of the Earth and the orbit's altitude. The escape velocity at the surface of the Earth is roughly 11.2 km/s. This means that the energy needed to reach this speed, which can be supplied by a rocket or other propulsion system, is the lowest energy input required to launch a satellite into orbit. As long as there are no other forces acting upon the satellite after it achieves this speed, it will be able to maintain its orbit without requiring any extra energy.

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To calculate the average deceleration of the bus, we can use the following formula:

Here, the initial velocity (v1) is 60 km/h, the final velocity (v2) is 40 km/h, and the time taken (t) is 8 seconds. To make the units consistent, we'll convert the velocities from km/h to m/s.

Now, we can plug the values into the formula:

Now, we'll find a common denominator for the fractions and simplify:

So, the average deceleration of the bus is approximately -150/216 m/s².

The frequency of red light when the wavelength is 700 NM is 4.29 x 1014 Hz.

Given: Wavelength 700NM.

To Find: Frequency of red light.

Solution: Frequency is the inverse of the period (t) and it is the number of oscillations per unit of time or the number of repetitions of an event by an object per unit of time.

Frequency can also be calculated in terms of wavelength and speed of light.

The formula for frequency is given by the equation:

frequency c (in ms-2) wavelength in m Here,c = speed of light in ms-2 = 3x 108 wavelength = 700 × 10-9 m

The formula for frequency = [tex]\frac{speed }{wavelengh}[/tex]

Frequency = [tex]\frac{3\times 10^{8} }{700\times 10^{-9} } = \frac{30}{7}\times 10^{14} =4.29\times 10^{14}[/tex]

Henceforth, the frequency of red light when the wavelength is 700 NM is 4.29 x 1014 Hz.

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The blue color of Uranus and Neptune's atmosphere is due to the presence of methane gas.

Uranus and Neptune have blue atmospheres primarily because of the presence of methane gas. Methane absorbs light in the red part of the spectrum more efficiently than in the blue part, causing the reflected sunlight to appear blue. This is similar to why the ocean appears blue; water absorbs red light more efficiently than blue light, causing the reflected light to appear blue.

In contrast, Jupiter and Saturn have predominantly red and orange atmospheres because of the presence of ammonia and other hydrocarbons. These chemicals absorb blue light more efficiently than red light, causing the reflected sunlight to appear reddish or orange. Jupiter's famous Great Red Spot, for example, is a massive storm that exposes deeper layers of the atmosphere where these chemicals are more abundant, resulting in reddish color.

Overall, the colors of a planet's atmosphere depend on the chemical composition of the atmosphere and how it interacts with sunlight. Different chemicals absorb and reflect different wavelengths of light, giving each planet its own unique coloration.

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If you push a book on a desk with a force of 5 N but the book does not move, it means that the force of static friction between the book and the desk is equal and opposite to your applied force. Therefore, the static frictional force must also be 5 N in magnitude.

Static friction is the force that resists the relative motion between two surfaces in contact that are not moving relative to each other. The maximum value of static friction is determined by the normal force (the force exerted by the surface perpendicular to the book) and the coefficient of static friction between the two surfaces.

The coefficient of static friction depends on the nature of the two surfaces in contact and is a measure of the amount of friction generated between them when they are not moving relative to each other.

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static friction is 5 N.

Static friction is a force that hinders the movement of an object moving along the path. When two fabrics slide over each other, this friction occurs. There's friction all around us. When we walk, for instance, our feet are in touch with the floor.

The static friction between the book and the desk is equal to the force you applied, which is 5 N. This means that the force of static friction is equal and opposite to your pushing force and is preventing the book from moving. Therefore, the static friction is 5 N.

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Answer:

The answer for Work done is ≈224J or 224Nm

Explanation:

Work done=F×D

F=mg

F=W

d=15×22=330cm=3.3m

W=67.8×3.3

W=223.74J or 223.7Nm

W≈224J or 224 Nm

If the electric field moves the charge from A to B by doing 0.052 J of work, we must determine the potential difference between a and B. That much is clear. The voltage differential is 9122.8 volts as a result.

Moving a +5.7-C charge between A and B causes the electric field to exert 0.052 J of work. When a charge q is transported from point A to point B, the potential difference between the two points is defined as the change in potential energy of the charge divided by the charge, or V = VB - VA. Voltage, also known as potential difference, is frequently abbreviated to V.

The SI unit for electric potential is volt (V). Potential difference is calculated using the method V = W/Q. Joules and Coulombs are the equivalent SI units for work and positive charge, respectively. Consequently, the formula can be written as VB-VA = WA B/Q.

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Polaris and Kochab's apparent magnitude of 2 and their proximity to the celestial pole make them appear larger in a photo or planetarium simulation compared to other stars.

A comparatively brilliant star as compared to other stars in the night sky, Kochab and Polaris both have an apparent magnitude of 2, making them both bright stars. In addition, they are both close to the celestial pole, which gives them a motionless appearance in the sky while giving the impression that other stars are rotating around them.

They stand out in the night sky because of their fixed location and brightness, and because of their brightness and proximity to the celestial equator, they look bigger than other stars in pictures or planetarium simulations.

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If a plunge pool undercuts the support of the resistant rock layer above and causes it to collapse, then this can result in a potentially dangerous situation, the collapse can cause erosion of the surrounding soil and vegetation, leading to further instability of the area.

The collapse of the resistant rock layer can lead to a landslide or rockfall, which can cause significant damage to the surrounding area and pose a threat to anyone in the vicinity. Additionally, the collapse can cause erosion of the surrounding soil and vegetation, leading to further instability of the area.

To prevent such occurrences, it is important to properly design and maintain plunge pools. The proper design includes ensuring that the pool is not located near a resistant rock layer or if it is, that measures are put in place to prevent the pool from undercutting the rock.

This may include reinforcing the rock layer, installing retaining walls or other support structures, or moving the pool to a different location.

Regular maintenance of the plunge pool is also crucial to prevent erosion and undercutting of the rock layer. This may involve monitoring the pool for signs of erosion or instability and taking corrective action if necessary, such as repairing or reinforcing the surrounding area.

Overall, it is important to ensure that plunge pools are designed and maintained properly to prevent the undercutting of resistant rock layers and potential collapses, which can have serious consequences.

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The  evaluated net water flow is 0.08 MPa under the context  that 0.15 mpa is selected as the root tissue and placed it in a 0.1 m solution of sucrose ψ = -0.23 mpa.

Then water potential of root tissue = -0.15 MPa, now  that of a 0.1 M solution of sucrose = -0.23 MPa. Then water potential gradient is

Δψ = ψ1 - ψ2

here

Δψ = water potential gradient,

ψ1 = water potential of root tissue

ψ2 = water potential of a 0.1 M solution of sucrose

Staging the values in the formula

Δψ = (-0.15) - (-0.23)

Δψ = 0.08 MPa

Hence, the level of  sucrose solution has a lower in comparison to  water potential present in the root tissue, therefore water will flow from the sucrose solution into the root tissue.

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The total estimated amount of fluid to be infused in the first 8 hours would be 14,040 mL.

The total estimated amount of fluid to be infused during the first 8 hours of a burn injury can be calculated using the Parkland formula:

For a 65 kg male with burns to the front and back of the trunk and front and back of both arms, the TBSA burned can be estimated using the Rule of Nines:

Thus, the total estimated amount of fluid to be infused in the first 8 hours would be:

Note that this formula is only an estimate and fluid requirements may vary depending on the individual patient's response to treatment. Close monitoring and adjustment of fluid therapy is essential in burn patients.

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The hotter an object is, the brighter and redder it appears, while cooler objects appear dimmer and bluer.

The question is asking about the relationship between an object's temperature and its brightness, color, and speed. The correct answers are that the hotter an object is, the brighter it appears and the redder it appears.

This is because hot objects emit more light, including more of the red end of the spectrum. The opposite is also true, meaning that cooler objects appear dimmer and bluer.

The speed of an object is not directly related to its temperature, so that answer is incorrect. However, it is important to note that the temperature of an object can affect its movement and velocity in certain situations.

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The minimum number of slits required is 393.

The minimum number of slits required to resolve two wavelengths [tex]\rm \( \lambda_1 \)[/tex] and [tex]\rm \( \lambda_2 \)[/tex] in a diffraction grating can be found using the formula [tex]\rm \( N = \frac{R}{m} \)[/tex], where [tex]\rm R = \frac{\lambda_{\text{avg}}}{\Delta \lambda} \)[/tex] and m is the order of the interference.

Given [tex]\( \lambda_1 = 471.0 \) nm and \\\\\( \lambda_2 = 471.6 \) nm, the average \( \lambda_{\text{avg}} \) is \\\\\( \frac{471.0 \, \text{nm} + 471.6 \, \text{nm}}{2} = 471.3 \) nm. \\\\The difference \( \Delta \lambda \) is \( 471.6 \, \text{nm} - 471.0 \, \text{nm} = 0.6 \) nm\\Calculate \( R = \frac{\lambda_{\text{avg}}}{\Delta \lambda} = \frac{471.3 \, \text{nm}}{0.6 \, \text{nm}} \\\\= 785.5 \).[/tex]

Now, substitute R into the formula for N:

[tex]\rm \[ N = \frac{R}{m} \\\\= \frac{785.5}{2} \\\\= 392.75 \][/tex]

Since N must be a whole number, the minimum number of slits required is N = 393.

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To find the magnetic field of a wire with a diameter of 9.76 mm and a uniformly distributed current, you'll need to know the current (I) flowing through the wire, and the distance (r) from the center of the wire to the point where you want to measure the magnetic field. You can use Ampere's Law to determine the magnetic field (B).

1. Convert the diameter of the wire to meters: 9.76 mm = 0.00976 m.
2. Calculate the wire's radius: radius = diameter / 2 = 0.00976 m / 2 = 0.00488 m.
3. Determine the current (I) flowing through the wire. This information should be provided in the problem.
4. Determine the distance (r) from the center of the wire to the point where you want to measure the magnetic field.
5. Use Ampere's Law to calculate the magnetic field (B): B = (μ₀ * I) / (2 * π * r), where μ₀ is the permeability of free space (μ₀ = 4π x 10⁻⁷ Tm/A).
6. Plug in the values of I, μ₀, and r into the equation and solve for B.

Once you have followed these steps with the appropriate values for I and r, you will have found the magnetic field at the desired distance from the wire's center.

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The magnetic force acting on the charged particle is -0.707 N in the k direction and 0.707 N in the j direction.

In this problem, the charge of the particle is given as 1 C, and the velocity of the particle is 1 m/s at an angle of 45 degrees to the positive x-axis. We can break down the velocity vector into its x and y components as follows:

vx = vcos(45) = 0.707 m/s

vy = vsin(45) = 0.707 m/s

The magnetic field is given as 1 T in the negative x direction.

Substituting these values into the formula for the magnetic force, we get:

F = q * (vxi + vyj + 0k) x (-Bi)

where I, j, and k are the unit vectors in the x, y, and z directions, respectively.

Expanding the cross product, we get:

F = q*(-vxB)k + qvyB*j

Substituting the values for q, vx, vy, and B, we get:

F = (1 C) (-0.707 m/s) (1 T) k + (1 C) (0.707 m/s) *(1 T) *j

Simplifying, we get:

F = -0.707 k + 0.707 j

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