Calculate the volume of the part of the sphere that will be immersed in the mercury when the density of the sphere is 7800kg/metre cubic and volume of 136centrimetre cubic and the density of the mercury is 13600kg/metre cubic

Answer:

C. gasses pushing a rocket forward

Explanation:

(a) Flowchart: A condenser process flowchart is provided, illustrating the inputs and outputs of the humid air stream, O₂, N₂, and the condensed liquid water. (b) Total flow rate: The total flow rate of the feed stream entering the condenser is 5.296F mol/s, considering the flow rates of water vapor, O₂, and N₂. (c) Enthalpy and heat transfer: The enthalpy changes for water vapor and O₂ are calculated, resulting in a heat transfer of -0.072 kF kW, indicating heat removal by the condenser. the heat transferred by the condenser is -0.072 kF kW.

(a) Flowchart:

(b) Total flow rate of the feed stream:

The flow rate of N2 leaving the condenser is given as 5.18 mol/s.

The flow rate of water vapor entering the condenser is 58.0 mol% of F.

80% of the above water vapor is condensed and removed, leaving 20% remaining.

So, 20% of the above water vapor remaining in the humid air after condensation is 0.116F mol/s.

The flow rate of O2 is given as 8.8 mol% of F.

The total flow rate of the feed stream is the sum of the flow rates of water vapor, O2, and N2:

Total flow rate = Flow rate of water vapor + Flow rate of O2 + Flow rate of N2

              = 0.116F + 0.088F + 5.18

              = 5.296F mol/s

(c) Inlet-Outlet Enthalpy Table:

To calculate the heat transferred by the condenser, we need to determine the enthalpy changes for water vapor (H3 to H4) and O2 (H5).

The enthalpy change for water vapor can be calculated as:

ΔH_vap = Enthalpy of water vapor at 30°C - Enthalpy of water vapor at 150°C

      = [40.657 + 0.119 × (30 - 0)] - [40.657 + 0.119 × (150 - 0)]

      = -13.607 kJ/kmol

Enthalpy of water leaving the condenser (H4) can be calculated as:

H4 = Enthalpy of water vapor at 30°C = 40.657 kJ/kmol

Enthalpy of O2 leaving the condenser (H5) can be taken as:

H5 = Enthalpy of O2 at 30°C = 0.102 kJ/kmol

The heat transferred by the condenser (q) can be calculated as:

q = Total flow rate × ΔH

 = (5.296F mol/s) × (-13.607 kJ/kmol) × 10⁻³ kW/J

 = -0.072 kF kW (where kF is the constant conversion factor 10⁶)

Therefore, the heat transferred by the condenser is -0.072 kF kW.

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If you are moving into a wave, its frequency will appear to you to be higher, while if you are traveling in the same direction as the waves, their frequency will appear to be lower.

What is meant by frequency ?

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According to the research, the correct option is moments of both forces are equal. In the principle of moments, both moments of forces are equal.

It states that the moment of a force about a point is equal to the sum of the moments of the components of the force about the point where two forces are equivalent when their effects on a rigid body are the same, that is, produce the same moment.

In this sense, two forces acting on an object are known as a couple whose torques about a point cause the object they act on to tend to rotate.

Therefore, we can conclude that following the equilibrium condition in the principle of moments, a structure of an object has to respond to the action of a moment with another of the same value and in the opposite direction.

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The initial velocities and masses of two cars are given. the wreckage moves at a speed of 9.08 m/s immediately after the collision.

The velocity of the VW Bug is negative, while the velocity of the compact car is positive. After they collide, they stick together. We need to calculate the speed of the wreckage immediately after the collision.Using conservation of momentum, the sum of the momentum of the two cars before the collision should be equal to the sum of the momentum of the wreckage after the collision. Mathematically, this can be written as:m1v1 + m2v2 = (m1 + m2)vAfter substituting the given values, we get: 457(-17) + 801(26) = (457 + 801)vSolving this equation, we get:v = 9.08 m/sTherefore, the wreckage moves at a speed of 9.08 m/s immediately after the collision.

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Work = Force x Distance, Work = 12 N x 50, Work = 600 Joules, etc. For Sarah to kick the ball: To Jerome as he pulls the box: Work is defined as the product of force and distance. For example, work equals 5 N x 15 m and 75 joules.

The formula v = gt, where g = 9.8 m/s2 and t = 1.5 s, is used to calculate the ball's final velocity shortly before it lands.

8 m/s, At a height of 11 metres above the earth, the ball is moving at a speed of 8 metres per second after leaving Sarah's hand at a distance of 1.5 metres above the ground.

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Question:

Sarah kicked the ball with 12 N of force. The ball moved 50 meters. How much work was done on the ball?

Transcranial magnetic stimulation (TMS)  is a technique that has been used to temporarily disturb brain area functioning in humans

TMS is a technique that has been used to temporarily disturb brain area functioning in humans. It involves the use of magnetic fields to stimulate or inhibit nerve cell activity in the brain.

TMS is used to study brain function, treat medical conditions such as depression and obsessive-compulsive disorder, and develop new treatments for neurological disorders.  

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Lists of the materials in order of embodied energy, from least to greatest is wood, Straw bales, Steel and  Aluminum

Embodied energy refers to the total amount of energy consumed in the extraction, processing, transportation, and manufacturing of a material

The list of materials in order of embodied energy, from least to greatest:

Wood: Wood is a renewable resource and requires relatively low energy for processing and manufacturing. It has a low embodied energy compared to other building materials.

Straw bales: Straw bales are a natural byproduct of agricultural processes and require low energy for processing. They are an inexpensive and sustainable material for insulation and construction.

Steel: Steel is a strong and durable material that requires a high amount of energy for processing. The production of steel also has a significant environmental impact, including greenhouse gas emissions.

Aluminum: Aluminum is a lightweight and corrosion-resistant material that requires a high amount of energy for processing. Its production also has a significant environmental impact, including greenhouse gas emissions and toxic waste.

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Figure 4 is the graph which best represents the relationship between the acceleration of an object falling freely near the surface of Earth and time taken.

This is defined as a pictorial representation of data in an organized and defined manner.

The acceleration of an object falling freely near the surface of Earth is constant which is why option D was chosen.

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Answer:

5 cm

Explanation:

Answer: The live wire is the most dangerous one, since it is at 230 V. it should never touch the earth wire (unless the insulation is between them, of course!), because this would make a complete circuit from your mains supply to the ground (earth). A shock or fire would be highly likely.

Explanation:

Answer:C.3

Explanation:

Answer:

This must be harder than it appears or I'm missing something, but as far as I know y=5

Explanation:

Answer:

1. Genetic diversity are the differences in DNA among individuals within a species or population while ecosystem diversity is the number or variety of ecosystems within a particular area.

2. Genetic diversity is the genetic material of microorganisms,  plants and animals contains information that  determines the characteristics of all species and  individuals that make up the diversity of the living  world while the ecosystem diversity is the enormous range of terrestrial and  aquatic environments on earth has been classified into a number of ecosystems.

A simple pendulum clock with an arm length of 150.3 cm swings through 100.0 cycles in 246.7 s on the surface of the Earth. The period of the pendulum is approximately 2.467 s.

The period of a simple pendulum is the time it takes for one complete oscillation, which can be calculated using the formula T = 2π√(L/g), where T is the period, L is the length of the pendulum arm, and g is the acceleration due to gravity. In this case, the length of the pendulum arm is given as 150.3 cm.

To use the formula, we need to convert it to meters by dividing by 100, resulting in 1.503 m. The acceleration due to gravity on the surface of the Earth is approximately 9.8 m/s². Substituting these values into the formula, we find T = 2π√(1.503/9.8) ≈ 2.467 s. Therefore, the period of the pendulum is approximately 2.467 seconds.

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A simple pendulum clock with an arm length of 150.3 cm swings through 100.0 cycles in 246.7 s on the surface of the Earth. The period of the pendulum is approximately 2.467 s.

The period of a simple pendulum is the time it takes for one complete oscillation, which can be calculated using the formula T = 2π√(L/g), where T is the period, L is the length of the pendulum arm, and g is the acceleration due to gravity. In this case, the length of the pendulum arm is given as 150.3 cm.

To use the formula, we need to convert it to meters by dividing by 100, resulting in 1.503 m. The acceleration due to gravity on the surface of the Earth is approximately 9.8 m/s². Substituting these values into the formula, we find T = 2π√(1.503/9.8) ≈ 2.467 s. Therefore, the period of the pendulum is approximately 2.467 seconds.

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Answer:

5.

i am not sur

bcoz i am giving thos answer only for points

Answer:

any two difference between negative and positive charge

➢The matter is positively charged if it contains more protons than electrons, and it is negatively charged if it contains more electrons than protons.

Explanation:

I hope it will help you.....

\(kai6417\)

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The same thing could reasonably be said about multicollinearity. Specifically, the reason for this is due to the violation of the assumption of independent predictors.

Let us understand what these terms mean:

In statistical analysis, multicollinearity is the high correlation among predictors in a regression model. It is problematic because of its adverse effects on the model, including making it difficult to determine the effect of an independent variable, coefficients becoming insensitive to small changes in the model, and reducing the reliability of the model.

In regression analysis, independent predictors are those variables that contribute to the prediction of the dependent variable or outcome, and their inclusion in the model improves the accuracy of the prediction of the model.

In a regression model, it is an assumption that predictors are independent, which means that the predictors have little to no correlation with each other. If this assumption is violated, it is known as multicollinearity.

Therefore, the same thing could reasonably be said about multicollinearity. Specifically, the reason for this is due to the violation of the assumption of independent predictors.

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The study of galaxies found that their rotation rate measured in the halo is higher than would be expected, indicating the presence of dark matter.

Observations of galaxies have revealed that the rotation velocities of stars and gas in the outer regions of galaxies, known as the halo, do not follow the expected behavior based on the visible matter alone. According to Newtonian physics, the outer regions of galaxies should rotate at slower velocities as the gravitational force weakens with distance. However, measurements have consistently shown that the rotation velocities remain relatively constant or even increase with distance from the galactic center. This discrepancy can be explained by the presence of dark matter, an invisible and as-yet-undetected form of matter that provides the additional gravitational pull required to account for the observed high rotation velocities. Dark matter is believed to be a significant component of galaxies and plays a crucial role in their formation and dynamics.

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Answer:

Explanation:

A: wrong. Mass and weight are different.

B: Wrong. The mass here and the mass on the moon are the same. The weight, which is Mass * the acceleration  is equal to weight.

C: Correct.

D: Wrong. Weight is not measured in Kg. Mass is.

\(\\ \sf\longmapsto KE=\dfrac{1}{2}mv^2\)

\(\\ \sf\longmapsto KE=\dfrac{1}{2}(0.5)(4)^2\)

\(\\ \sf\longmapsto KE=0.25(16)\)

\(\\ \sf\longmapsto KE=4J\)

Answer:

Bacteria

Fungi

Viruses

Parasites

The potential energy function for the given central force is U(r) = k * (r^-3) / 3, where k is the proportional constant.

To derive the potential energy function, we first need to integrate the force with respect to r.

The force, F = k/r^4

We know that, force = -dU/dr (where U is the potential energy)

So, dU/dr = -k/r^4

Integrating both sides with respect to r, we get:

U(r) = - ∫ k/r^4 dr

U(r) = -k * ∫ r^-4 dr

U(r) = k * (r^-3) / -3 + C

where C is the constant of integration.

As U(infinity) = 0, the potential energy function becomes:

U(r) = k * (r^-3) / 3

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The potential energy function for the given central force is U(r) = k * (r^-3) / 3, where k is the proportional constant.

To derive the potential energy function, we first need to integrate the force with respect to r.

The force, F = k/r^4

We know that, force = -dU/dr (where U is the potential energy)

So, dU/dr = -k/r^4

Integrating both sides with respect to r, we get:

U(r) = - ∫ k/r^4 dr

U(r) = -k * ∫ r^-4 dr

U(r) = k * (r^-3) / -3 + C

where C is the constant of integration.

As U(infinity) = 0, the potential energy function becomes:

U(r) = k * (r^-3) / 3

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Answer:

D) the sum of the kinetic energy and the internal energy is conserved

Explanation:

When  soft deformable objects such as two balls of putty collide, their total energy will be conserved , according to law of conservation of energy .

Their energy involves kinetic energy and potential energy . Their kinetic energy is due to their motion . Their potential energy is due to their shape . If there is change in their shape , there will be change in their potential energy .

Their internal energy consists of potential energy and thermal energy . Due to collision , heat will be produced so their thermal energy will also change . In this way there will be change in their internal energy .

But in spite of all these changes , total energy will be conserved . That means if one form of energy is reduced , the other kind will be increased  and so on.

Hence  the sum of the kinetic energy and the internal energy is conserved

The event horizon of a black hole is the boundary beyond which nothing, not even light, can escape its gravitational pull. The size of the event horizon is directly related to the mass of the black hole.

Specifically, the Schwarzschild radius formula can be used to determine the size of the event horizon, which is given by Rs = 2GM/c^2, where Rs is the Schwarzschild radius (event horizon radius), G is the gravitational constant, M is the mass of the black hole, and c is the speed of light. For a 10Msun black hole, the event horizon will be larger than that of a 1Msun black hole. This is because the mass term (M) in the formula directly affects the event horizon size. When comparing a 10Msun black hole to a 1Msun black hole, the 10Msun black hole has 10 times the mass, which will result in a correspondingly larger event horizon. The escape velocity for both black holes is indeed the speed of light, but their event horizons will differ in size due to the variation in mass.

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Retinol uptake activity by STRA6 is limited without the presence of intracellular binding proteins.

The role of intracellular binding proteins in STRA6-mediated retinol uptake and its implications for vitamin A metabolism and health. STRA6 is a transmembrane protein that plays a crucial role in the uptake of retinol, a form of vitamin A, into cells. The passage suggests that the activity of STRA6 in retinol uptake is limited without the presence of intracellular binding proteins, which bind to and transport retinol from the cytoplasm to the nucleus.

These binding proteins are required for the proper function of STRA6 and for the transport of retinol to its target organs. The expression of STRA6 is also higher in the liver than in other organs, indicating its importance in hepatic retinol uptake and metabolism.

Furthermore, the passage suggests that retinol uptake activity by STRA6 is accelerated when retinol is stored as intracellular retinol rather than as retinyl esters, highlighting the role of intracellular storage in retinol uptake and metabolism.

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Answer:

indepent valuable and random variable

The net force acting on the car is 65 N to the left

The net force acting on an object is simply defined as the resultant force acting on the object.

From the question given, we obtained the following data:

The net force acting on the car can be obtained as follow:

Fₙ = Fₗ – Fᵣ

Fₙ = 315 – 250

Therefore, the net force acting on the car is 65 N to the left

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Since there is no friction, the net force on the car in the x - direction will be 65 Newtons

Given that Dave and Alex push on opposite ends of a car that has a mass of 875 kg.

Dave pushes the car to the right with a force of 250 N, which is positive direction and Alex pushes to the left with a force of 315 N which is negative direction. Since there is no friction, only the horizontal forces will be considered.

To calculate the net force on the car in the x-direction, we will find the difference between the two forces because of their directions are opposite to each other.

Net force = 315 - 250

Net force = 65 Newtons

Therefore, the net force on the car in the x - direction will be 65 Newtons

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