Governments have the most economic power in which economic system?
A Command economy
B. Mixed economy
C. Traditional economy
D Market economy

The distance between your eye and the image of the butterfly in the mirror is: the same as the distance between your eye and the actual butterfly

The distance between your eye and the image of the butterfly in the mirror is the same as the distance between your eye and the actual butterfly, which is the sum of the distance from your eye to the mirror and the distance from the mirror to the butterfly.

To calculate this, we need to measure the distance from your eye to the mirror, which can be done using a ruler or tape measure, and then measure the distance from the mirror to the butterfly, which can be done using a ruler or tape measure as well. Once we have these two measurements, we can simply add them together to get the total distance between your eye and the image of the butterfly in the mirror.

To clarify further, let's use an example. If your eye is 10 cm away from the mirror and the butterfly is 30 cm away from the mirror, then the total distance between your eye and the image of the butterfly in the mirror is 40 cm. This is because 10 cm (from your eye to the mirror) + 30 cm (from the mirror to the butterfly) = 40 cm.

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Answer:

b

Explanation:

The magnitude of the angular acceleration of the fan is approximately 0.74 rad/s². The fan turns approximately 1800 degrees while slowing down during the 5.00 s. Meanwhile, if the angular acceleration does not change, it would take the fan approximately 0 seconds to stop after being turned off.

(a) To find the magnitude of the angular acceleration of the fan, we can use the formula for angular acceleration:

\(angular acceleration (a) =\frac{d (change in angular speed)}{time}\)

Initial angular speed (ω1) = 10.0 rad/s

Final angular speed (ω2) = 6.30 rad/s

Time (t) = 5.00 s

Using the formula:

\(a = \frac{w2 - w1}{t} \\a =\frac{6.30 rad/s - 10.0 rad/s}{5.00 s}\)

Calculating the expression, we find:

α = -0.74 rad/s^2

The magnitude of the angular acceleration of the fan is approximately 0.74 rad/s^2.

(b) To determine the angle through which the fan turns while slowing down, we can use the formula for angular displacement:

\(angular displacement (θ) =\frac{initial angular speed + final angular speed}{2 x time} \\\)

θ = (ω1 + ω2) / 2 x t

θ = (10.0 rad/s + 6.30 rad/s) / 2 x 5.00 s

Calculating the expression, we find:

θ = 31.5 rad

To convert the angle from radians to degrees:

θ_degrees = θ x (180° / π rad)

θ_degrees = 31.5 rad x (180° / π rad)

Calculating the expression, we find:

θ_degrees ≈ 1800°

Therefore, the fan turns approximately 1800 degrees while slowing down during the 5.00 s.

(c) If the angular acceleration does not change, we can use the formula for time to stop:

time to stop = (final angular speed) / (angular acceleration)

Final angular speed (ω2) = 0 rad/s (when the fan stops)

Using the formula:

time to stop = ω2 / α

time to stop = 0 rad/s / -0.74 rad/s^2

Calculating the expression, we find:

time to stop ≈ 0 s

Therefore, if the angular acceleration does not change, it would take the fan approximately 0 seconds to stop after being turned off. 0.74 rad/s² is the magnitude of the angular acceleration of the fan. While slowing down during the 5.00 s, the fan turns approximately 1800 degrees.

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a. The dimensions that minimize weight, the base length should be equal to one-eighth of the height.

b. We can achieve a design that minimizes the weight of the tank while still meeting the required specifications.

To find the dimensions that will make the tank weigh as little as possible, we need to consider the relationship between the dimensions, surface area, and volume of the tank. A smaller surface area would require fewer stainless steel plates, reducing the weight of the tank. Additionally, minimizing the height would decrease the volume, resulting in less steel needed overall.

a. To determine the dimensions that minimize weight, we can start by considering a square base for the tank. Let's assume the base has sides of length x. In this case, the surface area of each of the four sides of the tank would be 500 ft² (since the total surface area is 4 times the base area).

Using the formula for the surface area of a rectangular tank:

Surface Area = 2lh + lw + lh

For our square base tank, this simplifies to:

Surface Area = 4x² + xh

To minimize weight, we want to minimize the surface area. Taking the derivative of the surface area with respect to x, we can find the critical points. Differentiating the equation with respect to x yields:

d(Surface Area)/dx = 8x + h

Setting this derivative equal to zero and solving for x, we get:

8x + h = 0

x = -h/8

Since both x and h should be positive (as they represent lengths), we can conclude that x = h/8.

Therefore, for the dimensions that minimize weight, the base length should be equal to one-eighth of the height.

b. To take weight into account, we considered the relationship between surface area, volume, and weight. By minimizing the surface area, we reduce the amount of stainless steel required to construct the tank, thereby reducing its weight. Additionally, minimizing the height of the tank decreases its volume, which further reduces the weight by reducing the amount of steel needed.

By optimizing the dimensions based on these considerations, we can achieve a design that minimizes the weight of the tank while still meeting the required specifications.

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The eccentricity of an orbit when both focal points are located at the sun is zero.

What is an orbit?

An orbit is the trajectory, or path, of an object that revolves around another object, the center of mass or a gravitational point. All planets orbit the sun, and the moon orbits the earth, for example, An elliptical orbit is the shape of many planetary orbits.

As a result, the eccentricity of the orbit is significant.

What is Eccentricity?

The degree of circularity of an orbit is referred to as its eccentricity. When the distance between the two foci is divided by the length of the major axis, eccentricity is calculated.

A perfectly circular orbit has an eccentricity of zero.

An ellipse with an eccentricity of 1 is a parabolic orbit. When eccentricity is greater than one, the orbit is hyperbolic.

The eccentricity of an orbit when both focal points are located at the sun:

Since there is only one focus, and the center of the sun is located there, the eccentricity of such an orbit is zero. Because there is only one focus, the distance between the two foci is also zero.

As a result, a planet's orbit with a sun-centered focus is always circular.

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The ship travels with a velocity of 15 km/h within 2 hours. The distance travelled is the velocity times the time taken that is 30 km to the north.

Velocity is a physical quantity measuring the distance travelled by an object per unit time. Velocity is the rate of speed and it is a vector quantity having both magnitude and direction. The unit of velocity can be m/s, km/h, ft/s etc.

Velocity is the ratio of the change in distance to the change in time. The change in distance is sometimes called the displacement.

then velocity  = displacement / time

Given that velocity = 15 km/h

time taken = 2 hours

then displacement = velocity × time

= 15 × 2 = 30 Km

Therefore, the displacement of the ship is 30 km to the north.

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Sara pushed a box of lab equipment along the ground, displacing it by 1 meter. she has done work on the box of lab equipment.

When a force is applied and an object is moved over a specified distance, a work has been completed. The following formula is used to calculate an object's work,

W = Fd

Where, F is the applied force, and d is the object's displacement.

Therefore ,Sara has therefore completed her work on the box of lab equipment when she moves it by 1 m.

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The urban legend of the car thief is an example of A Cautionary Tale.

A cautionary tale makes reference to a given tale aimed at the warning the person of some type of danger, which is generally used to alert about a given behavior and may be very useful to modify a behavior pattern in children.

Therefore, with this data, we can see that A cautionary tale is based on warning and can help to modify certain behavior in c children depending on the ability to create conscious.

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Answer:

During a star-studded but socially safe ceremony for the 10th Annual NFL Honors, Green Bay Packers quarterback Aaron Rodgers earned the prestige of being the 2020 NFL Most Valuable Player (MVP).

Explanation:

modern quantum mechanics explains these periodic trends in properties in terms of electron shells. the filling of each shell corresponds to a row in the table

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{700}{600} = \frac{7}{6} \\ = 1.1666666...\)

We have the final answer as

Hope this helps you

Yes, an object can have zero displacement even if it has moved through a distance.

Displacement is a vector quantity that represents the change in position from the initial point to the final point.Yes, an object can have zero displacement even if it has moved through a distance. It takes into account the direction of motion as well as the magnitude.To illustrate this, consider a scenario where an object moves in a circular path and returns to its initial position. In this case, the object has covered a certain distance along the circumference of the circle. However, since it ends up at the same position it started, the displacement is zero because there is no change in its position relative to the initial point.

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Answer:

The Louisiana Purchase eventually doubled the size of the United States, greatly strengthened the country materially and strategically, provided a powerful impetus to westward expansion, and confirmed the doctrine of implied powers of the federal Constitution.

Answer:

Hello your question lacks some very vital information hence I will give you a general equation where you can input the missing values and get your answer

answer :  mass of Bananas ( m ) = \(\frac{A^2}{V^2} * K\)

To calculate for weight of Bananas  = m * g      where g = 9.8

Explanation:

Given an amplitude ( A )= 29.8981

Spring constant = x ( unknown )

maximum speed of Bananas( v ) = wA  ( unknown )

question : calculate the weight of the bananas

First  step : calculate the period of oscillation

T = \(\frac{2\pi }{vA}\) --- ( 1 )

next step : express T in terms of mass ( m ) of the bananas

= \(2\pi \sqrt{\frac{m}{k} } = \frac{2\pi }{vA}\)

∴ m/k = A^2 / v^2

hence  mass of Bananas ( m ) = \(\frac{A^2}{V^2} * K\)

To calculate for weight = m * g

Answer:

They are all composed of gases.

Explanation:

The inner planets are mainly composed of types of rock. The surface and interior is rocky but the atmosphere is composed of gases. The outer planets happen to be composed mainly of gas, or in other terms, elements. The two primary elements that make up these planets are hydrogen and helium. Because the inner planets are made up of primarily, they have given the nickname the "Terrestial Planets" and the outer planets are called "Gas Giants" because of their gas (elements) composed atmospheres and overall interiors.

Answer: A: they are composed of gas

Explanation:

The Moon's escape velocity is less than the Earth's escape velocity.

We know that,

\(V_{e}\) = √ 2 G M / r

where,

\(V_{e}\) = Escape velocity

G = Universal gravitational constant

M = Mass of object

r = Radius of object

For the Moon,

G = 6.67 * \(10^{-11}\) N m² / kg²

M = 7.35 * \(10^{22}\) kg

r = 1737400 m

\(V_{e}\) = √ [ 2 ( 6.67 * \(10^{-11}\) * 7.35 * \(10^{22}\) ) / 1737400 ]

\(V_{e}\) = 2375.89 m / s = 5314.72 mil / hr.

Escape speed is the amount of speed required to escape the object's gravitational pull. The size or mass of the object trying to escape does not matter.

Therefore, the Moon's escape velocity is less than the Earth's escape velocity.

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a) Two other forces that act on thee sled are the weight of the daughter and the drag force

b) The drag force slows down the sled while the weight presses it down.

We know that motion is the result of the action of unbalanced forces. From the Newton's third law, we know that if the forces that are acting on an object are balanced that the object is not going to move from its state of rest.

In this case, we are told that a  father pushes his daughter and son on a sled down a hill. The fact that the led is moving is due to the fact that there are forces that are acting on the sled.

The forces that are acting on the sled apart  from the force that was applied in pushing the sled is the drag force and the weight of the son.

The drag force would determine how fast that the sled would move because it acts in opposition to the forward force and tries to slow down the sled as it is moving. The weight of the son does press the sled downwards.

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The birds' collective momentum is in the same direction as a goose's, i.e., the right way, but the goose's momentum is more than that of two ducks.

       0=-2md vd + mg vg

       2md vd/ mg = v g =2 (40) (1.1) /7.6kg

       vg =1.2m/s

       when total momentum is set to zero.

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The angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

To determine the angles θ and θ' in the given scenario, we can use Snell's Law, which relates the angles of incidence and refraction to the refractive indices of the media involved. Snell's Law can be stated as follows:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Where:

n₁ is the refractive index of the medium of incidence (in this case, air with a refractive index close to 1),

θ₁ is the angle of incidence,

n₂ is the refractive index of the medium of refraction (in this case, linseed oil with a refractive index of 1.48), and

θ₂ is the angle of refraction.

Let's solve for the unknown angles θ and θ' using the given information.

Given:

Angle of incidence θ = 1°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of refraction θ₂.

Using Snell's Law, we have:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

sin(θ₁) = n₂ * sin(θ₂)

Plugging in the values:

sin(1°) = 1.48 * sin(θ₂)

We can now solve for θ₂:

θ₂ = arcsin(sin(1°) / 1.48)

Calculating this value, we find:

θ₂ ≈ 0.688°

Now, let's determine the angle θ'.

Given:

Angle of refraction θ₂ = 0.688°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of incidence θ'.

Using Snell's Law, we have:

n₂ * sin(θ₂) = n₁ * sin(θ')

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

n₂ * sin(θ₂) = sin(θ')

Plugging in the values:

1.48 * sin(0.688°) = sin(θ')

Solving for θ', we find:

θ' = arcsin(1.48 * sin(0.688°))

Calculating this value, we get:

θ' ≈ 1.988°

Therefore, the angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

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The average typing speed is around 40 words per minute (wpm) for a novice typist, while the average for an experienced typist is around 65 wpm. However, these numbers can vary greatly depending on the individual and their typing experience.

Typing speed can be measured in two ways: words per minute (wpm) or characters per minute (cpm). Wpm measures the number of words typed in one minute, while cpm measures the number of characters typed in one minute. The difference between the two is that a word typically contains five or more characters, so a higher wpm count generally indicates a higher cpm count as well.

There are many factors that can affect typing speed, including the individual's typing experience, the type of keyboard they are using, and the type of text they are typing. For example, typing on a qwerty keyboard versus a dvorak keyboard can affect typing speed. Similarly, typing on a touch screen device may be slower than typing on a physical keyboard.

One way to improve typing speed is through typing practice and exercises. There are many typing practice websites and software available, which can help to improve typing speed and accuracy. Some of these programs are designed to teach touch typing, which is a method of typing where the typist uses all ten fingers to type, rather than just their index fingers. This method can increase typing speed, as the typist is able to type faster with more fingers.

Overall, typing speed can vary greatly from person to person and can be affected by many factors. However, with practice and dedication, typing speed can be improved.

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Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Magnitude and direction of vector (a):

(a) Magnitude: 63 units

(b) Direction: Due west

Vector (a) has a magnitude of 63 units and points due west. The magnitude represents the length or size of the vector, which in this case is 63 units. The direction indicates the orientation or angle at which the vector is pointing.

To determine the direction of vector (a) relative to due west, we need to consider that due west is a horizontal line in the negative x-direction. Since vector (a) also points due west, its direction relative to due west would be 0 degrees or straight towards the negative x-axis.

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Answer:

1000m

Explanation:

Distance = speed x time = 50x20 = 1000

Answer:

The answer is 1000m

Explanation:

Now,

D = 50m/s × 20s

D = 1000 m

Thus, The car travels 1000 m.

-TheUnknownScientist 72

Answer:

A         Em

     1          ½ K

     2         ½ k 4 = 2k

     3         ½ k 9 = 4.5 k

     4         ½ k 16 = 8k

Explanation:

The total mechanical energy of a simple harmonic movement is constant in time, let's look for the energy at one end of the movement, where the velocity of the body is zero.

        Em = U = ½ k x²

at the end x = A

        Em = ½ k A²

Let's build a table for the energy and as a function of the amplitudes of the movement

     A         Em

     1          ½ K

     2         ½ k 4 = 2k

     3         ½ k 9 = 4.5 k

     4         ½ k 16 = 8k

as a function of the lowest energy

      1            Eo = ½ k

      2           4Eo

      3           9 Eo

      4          16Eo

Ahoy.

Avast.

Calm seas and prosperous voyage, Mr. Campbell.

Thanks for sharing.

Haul up the top sheet, and spanker.

Thar she blows.

The magnitude of the force of the object which has the power of 4 watts and a velocity is 2 m/s is 2N.

The power of the object = 4 Watts

The velocity of the object = 2 m/s

The force of the object can be found using the formula,

               P = Fv

where P is the power

           F is the force

           v is the velocity

Let us rearrange the equation,

              F = P/v

Let us substitute the known values in the above equation, we get

              F = 4 / 2

                  = 2 N

The magnitude of the force of the object is 2N.

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The youngest age that this person can be and legally operate a boat powered by a motor of more than 35 hp will be 12 years of age.

It is the rate of the electric work done. Its unit is the watt. Horsepower is the unit of power.

A person under the age of 12 may only legally operate a boat with a motor that has more than 6 horsepower but no more than 35 horsepower

if they meet two requirements: they have a boating safety certificate, which they must have on board; and they are being closely watched by an adult who is at least 16 years old.

Hence the youngest age that this person can be and legally operate a boat powered by a motor of more than 35 hp will be 12 years of age.

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The stockroom worker must exert a force of approximately 24.696 N to push the box with a constant speed of 3.30 m/s on the horizontal surface.

Calculating the force required to push the box with a constant speed. To do this, we need to consider the forces acting on the box.

Determine the weight of the box:
The weight of an object can be calculated by multiplying its mass by the acceleration due to gravity. In this case, the    mass of the box is given as 12.0 kg, and the acceleration due to gravity is approximately \(9.8 m/s^2\). So the weight of the box is:
 

Weight = mass x acceleration due to gravity is

\(12.0 kg x 9.8 m/s^2 = 117.6 N\)

Calculate the force of kinetic friction:
  The force of kinetic friction can be calculated using the equation:
  Force of kinetic friction = coefficient of kinetic friction x normal force
  The normal force is equal to the weight of the box since it is on a horizontal surface. So the force of kinetic friction is:
  Force of kinetic friction

0.21 x 117.6 N = 24.696 N

Determine the applied force:
Since the box is being pushed with a constant speed, the applied force must be equal in magnitude and opposite in direction to the force of kinetic friction. Therefore, the applied force is also 24.696 N.

The stockroom worker must exert a force of approximately 24.696 N to push the box with a constant speed of 3.30 m/s on the horizontal surface.

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