Most of the mass of our Galaxy lies
a) in the bright spiral arms.
b) between Earth and the Galactic center.
c) outside the luminous part of the Milky Way Galaxy.
d) within the bulge.
e) at the galactic center.
c) outside the luminous part of the Milky Way Galaxy.

The magnitude of the displacement vector refers to the length or amount of the displacement vector. Displacement is the change in position of an object. Displacement is a vector quantity, which means it has both magnitude and direction. In this question, a figure skater is gliding along a circular path of radius 3.93 m.

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Answer:

it's b  

a\p\e\x\

Explanation:

Answer:

it is energy resulting in charged particles

Electricity a form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current

Due to years of practice and repetition, Marcus has most likely begun to use unconscious processes when swinging his golf club.

The unconscious is the process that proceeds outside the person's awareness and plays a major role in directing thoughts, feelings, behavior, and mental illness.

When Marcus goes to play golf, he steps up to his ball and swings the club without thinking at all about his technique, so the signs about the unconscious process.

Therefore, Marcus has most likely begun to use unconscious processes when swinging his golf club.

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\( \qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star\)

\(\textsf{ \underline{\underline{Explanation} }:}\)

The given picture shows a dam, and as we know dam ises water current to produce electricity. as the water current has high kinetic energy, so when it hits and rotates the turbine, the generator produces electricity.

Hence, the correct option will be :

❖ D. Kinetic energy to electrical energy

Answer:

Cell membrane helps to enclose the cell organelles and cytosol inside a cell. A cell wall is a ridgid, protective layer and it covers the cell membrane

Explanation:

Charge will flow, option B: from sphere 1 to sphere 2 because sphere 2 has smaller electric potential and the charge flows from higher electric potential to lower.

The difference between the two spheres' potentials is the solution. The potential on the inner sphere will be higher than that of the outer sphere if the inner sphere is positively charged, regardless of whether it is larger or smaller than the charge that exists on the surface of the outer sphere. Charges move from higher potential to lower potential, as you are likely aware. The electric potential in a conducting sphere can be related as:

V = kQ/R

From here, we get that electric potential is inversely proportional to the radius, or size of the sphere. Thus, the charge would be flowing from sphere 1 to sphere 2.

Also, if the inner sphere had a negative charge, the charge would move the other way.

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\(\\ \sf\longmapsto T=2a\)

\(\\ \sf\longmapsto mg=2a\)

\(\\ \sf\longmapsto (2+m_2)(10)=2(3)=6\)

\(\\ \sf\longmapsto m_2+2=\dfrac{6}{10}=0.6\)

\(\\ \sf\longmapsto m_2=0.6+2\)

\(\\ \sf\longmapsto m_2=2.6kg\)

The mass of 0.88 Kg should be suspended on the other end of the string in order to get an acceleration of 3 m/s².

The tension is produced when the rope on the pulley experiences a pulling force on the ends of the rope.

The two bodies of different masses m₁ and m₂  are connected at the ends of a string and mass m₂ is placed on a horizontal, frictionless plane and frictionless pulley.

m₁a + m₂a = m₂g

(m₁ + m₂) a = m₂g

Given the mass placed at the horizontal plane, m₁ = 2 Kg

The acceleration obtained, a = 3 m/s²

The acceleration due to gravity acting, g = 9.8m/s²

(m₁ + m₂) a = m₂g

(2 + m₂) × 3 = m₂ ×9.8

6 + 3m₂ = 9.8 m₂

9.8 m₂ - 3m₂ = 6

6.8 m₂ = 6

m₂ = 0.882 Kg

Therefore, the mass of 0.882 Kg should be suspended to obtain an acceleration of 3 m/s².

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Answer:

The answer of this question is windmill

Answer: 42 N-s

Explanation: The area under the curve is equal to the impulse, so you take the area of the two triangles and add it to the area of the rectangle.

Area of a triangle: 1/2bh

Area of a rectangle: bxh

2(1/2x2x7)=14+(4x7)=42 N-s

The force of magnitude F acting in the x-direction on a 3.5 kg particle varies in time as shown in the graph given in question, the impulse of this force is 42 N-s.

The integral of a force, F, over the time period  which it acts, t, is referred to as the impulse. Impulse is a vector quantity because force is one as well. When an item receives an impulse, its linear momentum also changes in the opposite direction in an analogous vector.

S.I unit of impulse is Newton-second (Ns).

From the graph given in question area under the curve is equal to the impulse, so  take the area of the two triangles and add it to the area of the rectangle.

Area of a triangle = 1/2bh

Area of a rectangle = bxh

total area,

impulse = 2(1/2x2x7)

             = 14+(4x7)

             = 42 N-s

Impulse of the force is 42 N-s.

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Answer:

Explanation:

Functionalism: According to functionalism, social inequality is necessary for the smooth functioning of society. This means that even if all the world's wealth and assets were equally divided, people's skills, abilities, and efforts would still differ, leading to differences in income and wealth. Moreover, social positions that require more education, training, and skills would still be rewarded more highly than those that require less. Therefore, some people would still be motivated to achieve more than others and occupy higher social positions. Additionally, some people might not want to work hard and would be content with their share, while others might want to invest their share and accumulate more wealth. This would lead to differences in wealth and income over time, leading to the re-emergence of social stratification.

Conflict Theory: According to conflict theory, social inequality is the result of the struggle for power and resources between different social groups. Even if all the world's wealth and assets were equally divided, some people or groups would still try to monopolize the resources and accumulate more wealth and power than others. For example, some people might try to control the means of production, such as land, factories, and capital, while others might try to control the distribution of goods and services, such as markets, transportation, and communication. Moreover, some people might have more social and cultural capital, such as education, networks, and prestige, which would give them an advantage in achieving their goals. Therefore, social stratification would still exist, but in different forms and with different justifications.

Interactionism: According to interactionism, social inequality is the result of the symbolic meanings and interpretations that people attach to wealth, status, and power. Even if all the world's wealth and assets were equally divided, people would still have different attitudes, values, and beliefs about them, which would affect their behavior and interactions. For example, some people might feel more entitled to a higher share of the wealth and assets because of their race, gender, religion, or nationality, while others might feel less entitled or even resentful. Moreover, some people might use their wealth and assets as symbols of their identity, status, and prestige, while others might reject them as meaningless or corrupt. Therefore, social stratification would still exist, but in different symbolic forms and meanings.

Response to Post 1:

I agree with your analysis from the perspective of functionalism. Even if all the world's wealth and assets were equally divided, people's skills, abilities, and efforts would still differ, leading to differences in income and wealth. Moreover, some people might not want to work hard and would be content with their share, while others might want to invest their share and accumulate more wealth. This would lead to differences in wealth and income over time, leading to the re-emergence of social stratification. Additionally, social positions that require more education, training, and skills would still be rewarded more highly than those that require less. Therefore, the functionalist perspective suggests that social inequality is not only inevitable but also necessary for the smooth functioning of society.

Response to Post 2:

I appreciate your analysis from the perspective of conflict theory. Even if all the world's wealth and assets were equally divided, some people or groups would still try to monopolize the resources and accumulate more wealth and power than others. For example, some people might try to control the means of production, such as land, factories, and capital, while others might try to control the distribution of goods and services, such as markets, transportation, and communication. Moreover, some people might have more social and cultural capital, such as education, networks, and prestige, which would give them an advantage in achieving their goals. Therefore, social stratification would still exist, but in different forms and with different justifications. The conflict

Answer:

As mass increase acceleration decrease so the relationship is opposite

Answer:

It is an inverse relationship, if you increase one the other will decrease, and vice versa

Explanation:

Iron forms an oxide when exposed to air is a true property about this element.

This is an element which has magnetic properties and forms an oxide when exposed to air.

Iron forms ferric oxide in the presence of oxygen which is the brown like color seen in the form of rust.

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In our lives or possibly in countless lifetimes, non-renewable energy sources will deplete or cease to exist. Coal, petroleum, & natural gas make up the majority of non-renewable energy sources.

By most standards, biofuels, oil, and natural gas—cause significantly more damage than renewable energy sources, including air pollution, ill effects on human health, habitat loss for species, water use, land use, the global warming emissions.

Coal, nat gas, oil, & nuclear energy are examples of nonrenewable energy sources. Since we now depend on these resources for the majority of our energy, once they are depleted, they could be replaced, which poses a serious issue for humanity.

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The work done, by the force of friction on the box as the box moves a distance is 13.12 J.

The work done by force of friction is calculated from the product of force of friction and distance through which the object travelled and it is given as;

W = Fₙd

where;

W = μmg x d

Where;

W = 0.431 x 6.25 x 9.8 x 0.497

W = 13.12 J

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Answer:

it shows the gorwth

Explanation:

The answer is 1) The pressure at point D is 80 kPa. 2) The temperature at point D is 800 K. 3) The net work done on the gas over four cycles is zero. 4) The internal energy of the gas at point A is 100 J. 5) The total change in internal energy during four complete cycles is zero.

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The gravitational force between objects increases with an increase in mass and decreases with an increase in distance. So, a smaller distance and a greater mass result in a greater gravitational force.

The correct answers to this question are 'A. Smaller distance results in greater force' and 'D. Greater mass results in greater force'. According to the universal law of gravitation, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This means that as the mass of one or both objects increases, the gravitational force also increases. Conversely, as the distance between the objects increases, the gravitational force decreases. Hence, a smaller distance would result in a greater force and a greater mass would also result in a greater force.

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Answer:

The correct answer is - 2.10 eV.

Explanation:

To calculate the energy of a photon of  a specific wavelength light, the following formula can be used:

E = h * c / λ = h * f ,

where,

E = energy of a photon.

h = Planck constant,

c = speed of light,

λ = wavelength of a photon,

f = frequency of a photon.

Putting the given value of orange photon:

E = h * c / λ

= (6.626 x 10^-19)*(3*10^8)/590

= 3.36685738E-19 or 2.1014 eV

Answer:Presentism is a school of philosophy that holds that the future and the past exist only as changes that occurred or will occur to the present, and they have no real existence of their own. In this view, time travel is impossible because there is no future or past to travel to.

Explanation:

Answer:

\(I=1.83\ kg-m^2\)

Explanation:

Given that,

The angular acceleration of the wheel,\(\alpha =7.24\ rad/s^2\)

Net torque,\(\tau=13.3\ N-m\)

We need to find the total moment of inertia of the vase and potter's wheel. We know that,

Net torque,\(\tau=I\alpha\)

Where

I is the moment of inertia

So,

\(I=\dfrac{\tau}{\alpha }\\\\I=\dfrac{13.3}{7.24}\\\\I=1.83\ kg-m^2\)

So, the moment of inertia of the vase is equal to \(1.83\ kg-m^2\).

Answer:

Neuroscientists believed that neuroplasticity only manifested itself in childhood, but late 20th-century research suggests that many aspects of the brain can change (or become "plasticized") even in adulthood.

Explanation:

The expression for the tension in the spring A is T(A) = √[(-W cos(90 - θ))² + (W sin(90 - θ))²]

The tension in spring A can be determined by resolving the forces into x and y components as shown below.

The angle spring A makes with horizontal is calculated as;

A = 90⁰ - θ

The horizontal component of the tension on spring A;

T(Aₓ) = -W cos(A)

T(Aₓ) = -W cos(90 - θ)

The vertical component of the tension of spring A is calculated as;

T(Ay) = W sin(A)

T(Ay) = W sin(90 - θ)

The expression for the tension in spring A is calculated as;

T(A) = √[(T(Aₓ)² + T(Ay)²]

T(A) = √[(-W cos(90 - θ))² + (W sin(90 - θ))²]

Thus, the expression for the tension in the spring A is determined through resolution of vector components.

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Given

distance of the object  u = -40 cm.

radius of curvature of the refracting surface  R = -20 cm.

The height of the object  h = 1 cm.

To Find

The size of the image

Solution

We will now write the following data using the sign convention:

The object's distance is u = -40 cm.

The refracting surface has a radius of curvature of R = -20 cm.

The object's height is h = 1 cm.

We know that the lens maker formula is: n2vn1u=n2n1R.

v denotes the image formation distance.

The refractive index of the second medium is n2=1.33, and the refractive index of the first medium is n1=1.

In the preceding equation, we will now substitute the known values.

1.33v−1−40cm=1.33−1−20cmv=32.05cm

We know that the magnification ratio can be expressed as vu=Hh.

H denotes the height of the created image.

We'll now swap the given and obtained values.

⇒32.05cm divide by 40cm=H divide by 1cm

⇒H=0.6cm

As a result, the best choice is (B).

Further information: The rules of reflection apply to reflection from a concave mirror. The normal to the point of incidence is drawn along the radius of the mirror, that is, by connecting the point of incidence to the centre of curvature.

The development of an image in a concave mirror is mostly determined by the distance between the object and the mirror. The concave mirror produces both real and virtual images.  A virtual and magnified picture is generated when the object is placed very close to the mirror.

The complete question is -

Find the size of the image formed in the situation shown in figure.

photo

A) 0.5 cm

B) 0.6 cm

C) 1.2 cm

D) 1 cm

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The car is moving at approximately 12.5 meters per second.

The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * \(v^2\)

where

KE = kinetic energy,

m =Mass of the object, and

v = velocity.

In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .

Substituting the  values , we have:

125,000 J = 1/2 * 1600 kg *\(v^2\)

Now, we can solve for v by rearranging the equation:

\(v^2\) = (2 * 125,000 J) / 1600 kg

\(v^2\) = 156.25 \(m^2/s^2\)

Taking the square root, we find:

v = √156.25\(m^2/s^2\)

v ≈ 12.5 m/s

Therefore, the car is moving at approximately 12.5 meters per second.

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The gas's internal energy that expands from I to F changes by 1015 J.

Since the gas is expanding and energy is added to it by heat, the change in internal energy of the gas can be calculated using the first law of thermodynamics, which states that:

ΔU = Q - W

where ΔU = change in internal energy,

Q = heat added to the system, 465 J and

W = work done by the system.

Assuming that the process is quasi-static use approximation known as the "staircase approximation."

By adding up the work done in each step, find that the total work done by the gas is approximately -550 J. The negative sign indicates that work is done on the gas.

Therefore, using the first law of thermodynamics, we can calculate the change in internal energy of the gas as:

ΔU = Q - W

ΔU = 465 J - (-550 J)

ΔU = 1015 J

Therefore, the change in internal energy of the gas is 1015 J.

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Taking into account the scientific notation, the result of the sum is 6.363×10¹³.

Scientific notation is a quick way to represent a number using powers of base ten. The numbers are written as a product:

a×10ⁿ

where:

You want to add two numbers in scientific notation that not have the same base 10 exponent. So, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 13.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 8.30×10¹¹= 0.0830×10¹³

Taking the quantities to the same exponent, all you have to do is add what was previously called the number "a". In this case:

6.28×10¹³ +  0.0830×10¹³= (6.28+ 0.0830)×10¹³= 6.363×10¹³

Finally, the result of the sum is 6.363×10¹³.

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