what is the mechanism of hydraulic machine ​

false. According to NEC 378.21, conductors larger than the maximum size permitted by the wireway shall not be installed in the wireway.

This is because conductors that are too large can cause overheating and damage to the wireway, as well as potentially create a fire hazard.According to NEC 378.21, conductors larger than the maximum size permitted by the wireway shall not be installed in the wireway It is important to follow the manufacturer's instructions and guidelines for wireway installation and ensure that the conductors being installed are within the maximum size limits specified. Additionally, it is important to consider the ampacity and temperature ratings of the conductors to ensure they are appropriate for the intended application. Conductors that are too small may also create a hazard by overheating and causing a fire. Therefore, it is essential to choose the appropriate conductor size and follow all applicable codes and standards to ensure safe and reliable electrical installations.

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As we go down the earth, we are moving towards the centre of the earth therefore the distance between us and center of the earth reduces and hence there is reduction in force acting on us by earth i.e gravity.

Answer:

The speed of the ball can be found using the formula:

v = sqrt(Fc / m) = sqrt(23 N / 0.48 kg) = sqrt(23 / 0.48) m/s

v = approximately 4.53 m/s

The speed of the ball is approximately 9.01 m/s.

The centripetal force acting on a moving object in a circular path is given by the formula:

F = (mv²) / r

where F is the force, m is the mass of the object, v is its speed, and r is the radius of the circular path.

In this case, we know the mass of the ball is 0.48 kg, the centripetal force acting on the ball is 23 N, and the radius of the circular path is 1.7 m. Solving the formula for v, we get:

v = sqrt((Fr) / m)

Plugging in the given values, we get:

v = sqrt((23 N * 1.7 m) / 0.48 kg)

v = sqrt(81.167) m/s

v ≈ 9.01 m/s

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Answer:

576

Explanation:

48*12=576

hope this helps

The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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In order to use the efficiency of a car engine in an optimal way, a maximum engine speed of 2500 RPM for shifting is recommended for gas engines.

A car's fuel efficiency is determined by how well it converts the energy in its fuel into kinetic energy for movement.

Most of the time, it's advisable to maintain a speed below 2500 rpm for economic reasons.

Range of 2000-2500 rpm is the best for shifting as

1) It is the most favorable range for the engine due to economic reasons.

2) It saves fuel.

3) It also keeps the engine heavy.

After this range, the economy usually declines.

Even though moving gears doesn't significantly affect engine life due to technological developments, but shifting for gas engines is recommended at 2000-2500 rpm.

Hence, 2500 rpm is the maximum engine speed recommended for gas engines for shifting.

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When a pulse encounters a fixed point, such as a wall or a rigid boundary, it undergoes reflection. Reflection occurs when the pulse bounces back upon reaching the fixed point.

During reflection, the pulse experiences a change in direction but retains its original shape and properties. The incident pulse approaches the fixed point and interacts with it. As a result, an equal and opposite pulse is generated and travels back in the opposite direction.

The behavior of the reflected pulse depends on the nature of the incident pulse and the properties of the medium it travels through. If the pulse is inverted (upside-down) before reflection, the reflected pulse will also be inverted. Similarly, if the incident pulse is right-side-up, the reflected pulse will maintain the same orientation.

The reflection process follows the law of reflection, which states that the angle of incidence (the angle between the incident pulse and the normal to the fixed point) is equal to the angle of reflection (the angle between the reflected pulse and the normal). This law ensures that energy and momentum are conserved during the reflection process.

In conclusion, when a pulse encounters a fixed point, it undergoes reflection, resulting in the generation of an equal and opposite pulse traveling in the opposite direction. The reflected pulse retains the same shape and properties as the incident pulse, following the law of reflection.

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Moment of inertia is a measure of an object's resistance to rotational motion and is determined by the object's mass and its distribution relative to the axis of rotation. Its unit is kilogram square meter (kg m^2).

To understand moment of inertia, imagine a wheel and a solid cylinder of the same mass and size. If you apply the same force to both, the wheel will rotate much easier than the cylinder. This is because the mass of the wheel is farther from the axis of rotation, making it have a larger moment of inertia.

The moment of inertia of an object is determined by the object's mass and its distribution relative to the axis of rotation. For example, the moment of inertia of a sphere is different from that of a thin rod.

When calculating the moment of inertia of a more complex object, such as a human body, the moment of inertia of each individual body part must be calculated and then combined to find the total moment of inertia.

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The projectile launch relations allow to find the results for the maximum height of the jump of the cat is 0,, 287 m

The projectile launch studies the movement of the body near the earth, let's use the relationship

             \(v_y^2 = v_o_y - 2 g y\)  

Where v_y is the vertical velocity, v_[oy} the initial vertical velocity, g the acceleration of gravity (g = 9.8 m / s²) and t the time

They indicate that the cat jumped with an initial velocity of v₀ = 2.74 m / s and an angle of θ = 60º, let's use trigonometry to find the components of the velocity

         v₀ₓ = v₀ cos 60

         \(v_o_y\) = v₀ sin 60

         \(v_o_y\) = 2.74 sin 60 = 2.37 m / s

In the point highest trajectory the vertical speed must be zero (v_y = 0), in the attached we can see a diagram of the speeds of the cat

          0 = \(v_{oy}^2\)  - 2g y

          y =  \(\frac{v_{oy}^2 }{2g}\)

Let's calculate

         y = \(\frac{2.37^2}{2 \ 9.8 }\)  

         y = 0.287 m

In conclusion with the projectile launch relations we can find the results for the maximum height of the cat jump is 0,, 287 m

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Answer:

2.9 Hrs

Explanation:

Time = Distance/velocity

6265  / 2150 ≈ 2.9 hrs

The time taken for the passenger jet to move from 5 km/h to 460 km/h on the run way during the take off is 10.03 s

From the question given above, the following data were obtained:

The time taken for the the passenger jet to move from 5 km/h to 460 km/h can be obtained as follow:

a = (v – u) / t

12.6  = (127.78 – 1.39) / t

12.6 = 126.39 / t

Cross multiply

12.6  × t = 126.39

Divide both sides by 12.6

t = 126.39 / 12.6

t = 10.03 s

Thus, we can conclude that the time taken is 10.03 s

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Answer:

\(a=\dfrac{v-u}{t}\)

Explanation:

The acceleration of an object is the rate of change of velocity. The mathematical expression for the acceleration of an object is given by :

\(a=\dfrac{v-u}{t}\)

Where

v and u are final and initial velocities

t is time

or we can write acceleration as :

\(a=\dfrac{\Delta v}{\Delta t}\)

Hence, this is the required solution.

Answer:

Following are the solution to this question:

Explanation:

Please find the complete question and its solution in the attached file.

The car's speed at 10 s would be 20 m/s, and the final speed would be 40 m/s.

During the first 20 s, the car accelerates at a rate of 2 m/s², so its speed increases linearly. We can calculate the final speed at 20 s as follows:

a = 2 m/s²

t = 20 s

v = a * t = 2 m/s² * 20 s = 40 m/s

From 20 s to 60 s, the car continues at a constant speed, so the graph is a horizontal line at 40 m/s.

Therefore, the car's speed at 10 s is:

t = 10 s

v = a * t = 2 m/s² * 10 s = 20 m/s

And its final speed is 40 m/s

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As a main-sequence star burns its core supply of hydrogen, helium builds up in the core.

During the main sequence stage of a star's life, hydrogen fusion occurs in the core, converting hydrogen into helium. As the hydrogen in the core depletes, the core contracts under gravity, increasing its temperature and pressure. However, the core temperature may not be high enough to initiate helium fusion. Instead, the core becomes denser as helium accumulates. Option d correctly describes the process. Helium builds up in the core as hydrogen fusion decreases. This buildup of helium sets the stage for further stellar evolution, potentially leading to the next phase of stellar fusion or other changes in the star's structure and behavior.

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The total energy of one particle as measured in the rest frame of the other is given by E_rest = 2γm0c², where γ is the Lorentz factor, m0 is the rest mass of each particle, and c is the speed of light.

When two particles of equal rest mass m0 approach each other with equal and opposite velocity v in the laboratory frame, we can determine the total energy of one particle as measured in the rest frame of the other.

In the laboratory frame, the energy of a particle with rest mass m0 and velocity v is given by the relativistic energy equation:

E_lab = γm0c²

where γ is the Lorentz factor and c is the speed of light.

In the rest frame of one particle, the relative velocity between the two particles is 2v. The Lorentz factor γ' for this relative velocity is given by:

γ' = 1 / sqrt(1 - (2v/c)²)

To calculate the total energy of one particle in the rest frame of the other, we multiply the rest mass m0 by the Lorentz factor γ' and the square of the speed of light c²:

E_rest = γ'm0c²

Substituting the value of γ' into the equation:

E_rest = (1 / sqrt(1 - (2v/c)²)) * m0 * c²

Simplifying further:

E_rest = (1 / sqrt(1 - 4v²/c²)) * m0 * c²

Therefore, the total energy of one particle as measured in the rest frame of the other is given by E_rest = 2γm0c².

The total energy of one particle as measured in the rest frame of the other is obtained by multiplying the rest mass of each particle (m0) by the Lorentz factor (γ) and the square of the speed of light (c²). This expression, E_rest = 2γm0c², provides the relationship between the velocities, masses, and energies of the particles in their respective frames of reference.

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Answer:

From spectral lines astronomers can determine not only the element, but the temperature and density of that element in the star. The spectral line also can tell us about any magnetic field of the star. The width of the line can tell us how fast the material is moving. We can learn about winds in stars from this.

Explanation:

To find the current in the resistor, we can use Ohm's Law and the concept of equivalent resistance. Thus, option A is correct.

First, let's calculate the equivalent resistance of the three cells connected in parallel. When resistors are connected in parallel, the reciprocal of the equivalent resistance is equal to the sum of the reciprocals of the individual resistances:

1/Req = 1/R1 + 1/R2 + 1/R3

Given that R1 = R2 = R3 = 22 Ω (internal resistance of each cell), we can substitute the values:

1/Req = 1/22 + 1/22 + 1/22

1/Req = 3/22

Taking the reciprocal of both sides, we find:

Req = 22/3 Ω

Now we can use Ohm's Law to calculate the current (I) in the resistor. Ohm's Law states that the current flowing through a resistor is equal to the voltage across it divided by its resistance:

I = V/R

Given that V = 1.1 V (emf of each cell) and R = 32 Ω (resistance), we can substitute the values:

I = 1.1/32

Calculating this value, we find:

I ≈ 0.034375 A

Therefore, the current in the resistor is approximately 0.034375 A.

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When earth catches up to a slower-moving outer planet and passes it in its orbit, in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet exhibits retrograde motion.

Retrograde motion is the apparent change in movement of any planet in the sky. It is not real such that the planet doesn't make any movement physically in its orbit.

The planet just appears to be in a movement because the relative positions of that planet and our planet, Earth and how these two planets  move around the Sun.

Therefore, Retrograde motion is actually an illusion which is related to the movement of this Earth-based observer.

One familiar example occurs when an individual passes a car on a freeway, the car that passed appears to have moved backwards, relative to that individual.

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Jupiter and Neptune are both gas giants, meaning they have a thick atmosphere composed mainly of hydrogen and helium.

What is Planet?

A planet is a celestial body that orbits a star, is roughly spherical in shape, and has cleared its orbit of other debris. In our solar system, there are eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. These planets vary in size, composition, and other characteristics.

They also have strong winds and storms, and both have a system of rings and numerous moons. In terms of size, Jupiter is the largest planet in our solar system, while Neptune is the fourth largest.

Mercury and Venus are rocky planets, similar in composition to Earth. Mercury is the smallest planet in our solar system, while Venus is similar in size to Earth but has a very thick and hot atmosphere.

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A frictionless piston-cylinder device contains 7.5 liters of saturated liquid water at 275 kPa. An electric resistance is turned on until 3050 kJ of energy is transferred to the water.

i) The mass of water can be determined by using the specific volume of saturated liquid water at the given pressure and volume. By using the specific volume data from the steam tables, the mass of water is calculated to be 6.66 kg.

ii) To find the final enthalpy of water, we need to consider the energy added to the water. The change in enthalpy can be calculated using the energy equation Q = m(h2 - h1), where Q is the energy transferred, m is the mass of water, and h1 and h2 are the initial and final enthalpies, respectively. Rearranging the equation, we find that the final enthalpy of water is 454.55 kJ/kg.

iii) The final state and the quality (x) of water can be determined by using the final enthalpy value. The final enthalpy falls within the region of superheated vapor, indicating that the water has completely evaporated. Therefore, the final state is a superheated vapor and the quality is 1 (x = 1).

iv) The change in entropy of water can be obtained by using the entropy equation ΔS = m(s2 - s1), where ΔS is the change in entropy, m is the mass of water, and s1 and s2 are the initial and final entropies, respectively. The change in entropy is found to be 10.13 kJ/kg.

v) The process described is irreversible because the water started as a saturated liquid and ended up as a superheated vapor, indicating that irreversibilities such as heat transfer across a finite temperature difference and friction have occurred. Therefore, the process is irreversible.

On a P-v diagram, the process can be represented as a vertical line from the initial saturated liquid state to the final superheated vapor state, crossing the saturation lines.

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The velocity of canoe will be 27 m/s.

According to the rule of conservation of momentum, absent an external force, the combined momentum of two bodies operating upon one another in an isolated system kept static. As a result, momentum cannot be gained or lost.

Given, mass of the woman, m = 54 kg

mass of canoe, M = 48 kg

velocity of woman, v = 2 m/s

The principle of momentum conservation results in,

pi = pf

 0 = mv - Mu

mv = Mu

 u = mv/M

 u = 54×2/48

 u = 27 m/s

The velocity of canoe will be 27 m/s.

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Answer:

where is the question ??/dude

The voltage of the resistor of resistance 10 ohms is 50 V. The correct option is d. 50 Volts.

Voltage describes the “pressure” that pushes electricity.

To calculate the voltage of the resistor, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the voltage of the resistor is 50 V. Correct option d. 50 volts.

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Scientific sociology is one of the three methods of sociological investigation that fits the topic the best.

It is possible to define sociology as the scientific study of society, which includes a complete analysis of both internal and external elements that can have an impact on social structures and interaction patterns.

It should be noted that while the sociology field is very broad and full of opportunities that are required to complete the study that is being discussed in the work, this study focuses on social interaction and culture, which help to determine the things that can be used to learn more about the society.

In conclusion, of the three methods of sociological inquiry, scientific sociology is the most effective for the study of society.

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Answer:

x = 1.6 + 1.7 t^2      omitting signs

a) at t = 0     x = 1.6 m

b) V = d x / d t = 3.4 t

at t = 0     V = 0

c) A = d^2 x / d t^2 = 3.4     (at t = 0  A = 3.4 m/s^2)

d)  x = 1.6 + 1.7 * (4.4)^2 = 34.5    (position at 4.4 sec = 34.5 m)

Answer:

Higher frequencies of light have shorter wavelengths.

The correct vectors in the given list are displacement, average velocity, and time. Option A is correct.

The vectors are quantities that have both magnitude and direction. Displacement is a vector quantity that represents the change in position from an initial point to a final point. It includes both magnitude (how far an object has moved) and direction (the path taken). Average velocity is a vector quantity that represents the displacement divided by the time taken.

It includes both magnitude (the average speed) and direction (the average direction of motion). Time is not a vector quantity. It is a scalar quantity that represents the duration or interval between two events. Time does not have a direction associated with it. Speed and distance traveled are scalar quantities that only have magnitude and no specific direction associated with them. Option A is correct.

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