Q2- The figure below shows a closed tank holding water and oil. Air pressure is P kPa is
the air pressure above the oil. Calculate the pressure at the bottom of the container?
What is the pressure at the bottom of the container?
Use your last three digits of your ID the pressure values
0.25 m
Air
0.50 m
Oil
(sg = 0,85)
0,75 m
Water
18 m
1.2 m
ID:306

This problem can be solved using the pascal principle, which is applied for both pressures and volumes. In this case we use the definition of volumes, which says that the volume displaced fluid on one side of the Pistons should be equal to the volume displaced on the other side of the piston.

The force exerted at the large piston will be double in magnitude in comparison with the force applied at the smaller piston.

We know, according to the pascal's law,

The pressure applied at any point in the incompressible fluid is equal in magnitude at each and every point.

So,

P = Force/Area

Where P is pressure,

If pressure is same, then we can write,

F₁/A₁ = F₂/A₂

Where,

F₁ is the force applied at the small piston,

A₁ is the area of the smaller piston,

F₂ is the force at the larger piston,

A₂ is the area of the larger piston,

It is also given that, area if the larger piston is two times the area of the smaller piston so,

A₂ = 2A₁

So, putting the values we get,

F₂/F₁ = 2

So, F₂ = 2F₁

It means that the force exerted by the larger piston will be double in magnitude.

Therefore, In this case we use the definition of volumes, which says that the volume displaced fluid on one side of the Pistons should be equal to the volume displaced on the other side of the piston.

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It is true that program-data dependence refers to the coupling of data stored in files and software programs that use this data such that changes in programs require changes to the data.

Program-data dependence refers to the coupling of data stored in files and the specific programs required to update and maintain those files such that changes in programs require changes to the data. Every traditional computer program has to describe the location and nature of the data with which it works.

Data Independence is defined as a property of DBMS that helps you to change the Database schema at one level of a database system without requiring to change the schema at the next higher level. Data independence helps you to keep data separated from all programs that make use of it.

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Answer:

A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer. Modern personal computers universally use switched-mode power supplies

Answer:

Volt is the SI (Standard International) unit of electrical potential of the..

Explanation:

Answer:

Orange signs

Explanation:

Got it right on the test

The angle between the chord line of an airfoil and the relative wind is known as the angle of incidence.

Explanation:

Chord line: The chord line of an airfoil is a straight line that connects the leading edge to the trailing edge of the airfoil. It represents the reference line of the airfoil's shape.

Relative wind: The relative wind is the airflow experienced by an airfoil as it moves through the air. It is the result of the combined effects of the aircraft's forward motion and the surrounding air.

Angle of incidence: The angle of incidence is the angle between the chord line of an airfoil and the relative wind. It is measured in degrees and determines the orientation of the airfoil with respect to the airflow.

Angle of attack: The angle of attack, sometimes confused with the angle of incidence, is the angle between the chord line of an airfoil and the oncoming airflow. It is measured based on the direction of the airflow approaching the airfoil, rather than the relative wind.

In summary, the angle between the chord line of an airfoil and the relative wind is known as the angle of incidence, not the angle of attack or lift.

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Answer: Substitutional Impurity

Explanation:

Substitutional impurity is a defect that occurs when a non-matrix atom replaces a matrix atom as did the zinc atoms in brass did to some copper atoms. These non-matrix atoms will then be called substitutional impurity atoms.

For this to happen, the non-matrix atoms have to be close in size to the matrix atom that they are replacing which in general means within a range of 15%.

Answer:

The correct option is D

D) At minimum 10-20 minutes

Explanation:

After the car is jump started, the car should be allowed to run atleast for 10-20 minutes, this will help charge the battery of the car. If you don't do it and shut down the car immediately, the battery won't get charged and you will need another jump start. Apart from, parts of the car which are running from the battery e.g headlights, music player etc, should be turned off so it doesn't drain away the battery which is being charged.

Answer:

D. at minimum 10-20 minutes

Explanation: I got it right on FLVS

The maximum value of rolling resistance over which a loaded scraper can maintain in a speed of 11 mph is 275 lb/ton

The maximum rolling resistance is the maximum rolling friction that can cause the motion of a body or a substance to resist the force when rolled on a flat surface.

Using Rimpull Performance Chart for wheel-tractor scraper;

The total resistance = (gross+rolling) resistance

25% = 0% - rolling resistance

rolling resistance = 25%

The maximum rolling resistance = rolling resistance percentage × speed

The maximum rolling resistance \(\mathbf{=25\% ( \dfrac{11 \ lb/ton}{1 \% \ resistance})}\)

The maximum rolling resistance = 275 lb/ton

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Answer:

a) 5.62 Nm^2/C

b) 87.25°

Explanation:

Electric field strength E = 26 N/C

Radius r = 29 cm = 0.29 m

θ = 35°

Area of the loop = \(\pi r^{2}\) = 3.142 x \(0.29^{2}\) = 0.2642 m^2

a) Electric flux  ϕ = EAcosθ

ϕ = 26 x 0.2642 x cos 35°

ϕ = 26 x 0.2642 x 0.81915 = 5.62 Nm^2/C

b) for the flux through the loop to be 0.33 Nm^2/C

from  ϕ = EAcosθ

0.33 = 26 x 0.2642 x cos θ

0.33 = 6.8692 x cos θ

cos θ = 0.33/6.8692 = 0.048

θ = \(cos^{-1}\) 0.048

θ = 87.25°

A) The electric flux that passes through the loop is; ϕ = 6.8692 N.m²/C

B) The angle relative to the x-axis that the normal of the loop should be rotated so that ϕ = 0.33 N.m²/C is; θ = 87.25°

We are given;

Magnitude of electric field; E = 26 N/C

Radius; R = 29 cm = 0.29 m

Angle above the x-axis; θ = 35°

A) Formula for the Electric flux is; ϕ = EAcosθ

Where A is Area = πr²

A = π × 0.29²

A = 0.2642 m²

Thus;

ϕ = 26 × 0.2642 × cos 35

ϕ = 6.8692 N.m²/C

B) We are told that the electric flux is now ϕ = 0.33 N.m²/C

Thus;

0.33 = 26 × 0.2642 × cos θ

cos θ = 0.33/(26 × 0.2642)

cos θ = 0.048

θ = cos^(-1) 0.048

θ = 87.25°

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Answer:

Their company address

When their last tax period started

How often they have to file a tax return

When they started collecting sales tax for the agency

Explanation:

For setup the sales tax information in Quickbooks online for a client who only does business in their home state, we need these information which are given below:

1. Their company addresses

2.  Last Tax Time period started

3.  How frequently they filed the tax return

3. when they begin to received sales tax

Therefore all the other options are not valid. Hence, ignored it

Modern petrol engines employ ignition coils in all ignition systems for the same fundamental purpose: to produce the high voltage necessary to ignite a spark at the spark plug.

An electric spark is used in a gasoline engine's ignition system to start the fuel-air combination, which burns in the cylinders to create the motive force.

A storage battery, an induction coil, a device to timing high-voltage discharges from the induction coil, a distributor, and a set of spark plugs are the essential parts of the ignition system. The mechanism converts the low voltage electric current from the storage battery, which is typically 12 volts, to high voltage (some 40,000 volts). The distributor sends the high-voltage pulses in succession to each spark plug in the firing order.

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Answer:

transmitter hope thus helped!

Explanation:

Raceway is the answer

"A raceway is an enclosed conduit that forms a physical pathway for electrical wiring."

The required cross-sectional area of both bars AB and AC is 125000 mm^2.

To determine the required cross-sectional area of bars AB and AC, we need to calculate the maximum load that each bar can withstand with a factor of safety of 3.2, and then use the maximum load to calculate the cross-sectional area.

First, let's consider bar AB. We can analyze the forces acting on the truss to find the maximum load on bar AB. Since the truss is in static equilibrium, the sum of the forces in the x and y directions must be zero. In the y direction, we have:

F_AB + F_BC = W

where F_AB and F_BC are the forces acting on bars AB and BC, respectively, and W is the weight acting downwards at the joint C. Since the truss is symmetric, we can assume that F_AB = F_BC.

Therefore,

F_AB = W/2 = (1000 kg)(9.81 m/s^2)/2 = 4905 N

To find the maximum load that bar AB can withstand with a factor of safety of 3.2, we can use the formula:

maximum load = ultimate load / factor of safety

maximum load = 120 kN / 3.2 = 37.5 kN = 37500 N

Now we can use the maximum load to calculate the required cross-sectional area of bar AB:

maximum stress = maximum load / cross-sectional area

From the stress-strain curve of the alloy, we can assume that the ultimate stress is equal to the yield stress, since the bar will deform plastically beyond the yield stress. Let's assume that the yield stress of the alloy is 300 MPa.

maximum stress = 37500 N / cross-sectional area <= 300 MPa

cross-sectional area >= 37500 N / 300 MPa = 0.125 m^2

Therefore, the required cross-sectional area of bar AB is:

cross-sectional area = 0.125 m^2 = 125000 mm^2

For bar AC, we can repeat the same analysis to find the maximum load and then the required cross-sectional area. Since bar AC is inclined at an angle of 45 degrees, we need to resolve the forces into components in the x and y directions. We have:

F_AC = W/sin(45) = (1000 kg)(9.81 m/s^2)/sin(45) = 6945 N

maximum load = 120 kN / 3.2 = 37.5 kN = 37500 N

maximum stress = 37500 N / cross-sectional area <= 300 MPa

cross-sectional area >= 37500 N / 300 MPa = 0.125 m^2

Therefore, the required cross-sectional area of bar AC is:

cross-sectional area = 0.125 m^2 = 125000 mm^2

So the required cross-sectional area of both bars AB and AC is 125000 mm^2.

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The relationship between the concrete compressive strength and its flexural strength and splitting tensile strength is that; these strengths are interrelated and their values are dependent on one another.

The compressive strength of concrete is defined as the maximum compressive load that can be applied on a test specimen, to fail in compression. It is expressed in MPa or psi. It is one of the most important properties of concrete and is essential in designing a structure because it defines the concrete’s ability to resist compressive stresses.

A flexural strength test is performed on concrete to determine the strength of concrete in resisting bending stresses. In other words, the test determines the ability of the concrete to withstand bending stresses without cracking. A flexural strength test is important in the design of structural elements like beams, slabs, and other such components that are subjected to bending forces.

The splitting tensile strength of concrete is determined by applying a load on a cylindrical or cubical test specimen of concrete. It is the ability of the concrete to withstand tensile forces that tend to split or rupture the test specimen. It is an important property of concrete because it defines the concrete’s ability to resist tension and shear forces.

The relationship between these three strengths of concrete is that they are interrelated and their values are dependent on one another. In general, the compressive strength of concrete is higher than its flexural strength and splitting tensile strength. However, flexural strength and splitting tensile strength are important in determining the overall strength of concrete, and they are used in the design of structural elements like beams, slabs, and other such components.

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The ceramic compound that is most responsible for the initial, most significant, and most rapid hardening of cement within concrete during the induction stage of curing is calcium silicate hydrate (C-S-H).

During the hydration process, cement particles react with water molecules to form C-S-H, which then begins to precipitate and fill the spaces between the cement particles, forming a strong and durable material. This process occurs quickly and is responsible for the initial hardening of the concrete.

In addition to C-S-H, other ceramic compounds such as calcium hydroxide and ettringite also contribute to the hardening of concrete. However, these compounds form at a slower rate and are less significant in terms of initial hardening.

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Answer:

Explanation:

In Shunt DC Motors, the speed can be controlled using the following techniques:

Armature voltage control - By varying the armature voltage, the magnetic field produced by the armature current can be controlled, which affects the speed of the motor. Thus, the speed of the motor can be regulated by controlling the armature voltage.

Field resistance control - The speed of the motor can also be controlled by varying the field resistance. By increasing the field resistance, the flux produced by the field winding is decreased, and the speed of the motor increases. Conversely, reducing the field resistance increases the flux and decreases the speed.

Armature resistance control - In this method, the resistance of the armature circuit is varied. By increasing the armature resistance, the current in the motor reduces, leading to a decrease in the speed of the motor.

In Series DC Motors, the speed can be controlled using the following techniques:

Armature voltage control - Similar to shunt motors, the speed of the series motor can be regulated by varying the armature voltage.

Field flux control - As the name suggests, the flux produced by the field winding can be controlled by varying the field winding resistance. By increasing the field resistance, the flux reduces, leading to an increase in speed. Conversely, decreasing the field resistance increases the flux and decreases the speed.

Armature resistance control - By varying the armature resistance, the current in the motor can be controlled. Increasing the resistance decreases the current, leading to an increase in speed.

Overall, these techniques enable the speed control of shunt and series DC motors, allowing them to be used in a wide range of applications where variable speed control is required.

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It takes one complete revolution of the crankshaft to complete one 2-stroke cycle.

In a 2-stroke engine, the crankshaft is responsible for converting the reciprocating motion of the piston into rotational motion. The crankshaft is connected to the piston through a connecting rod, and as the piston moves up and down within the cylinder, it transfers this motion to the crankshaft.

A 2-stroke cycle consists of two primary strokes: the compression stroke and the power stroke. During the compression stroke, the piston moves upward, compressing the air-fuel mixture within the cylinder. As the piston reaches the top of its stroke, the spark plug ignites the compressed mixture, initiating the power stroke. The combustion of the fuel-air mixture creates a rapid expansion of gases, driving the piston downward.

The movement of the piston is directly connected to the rotation of the crankshaft. As the piston moves downward during the power stroke, it transfers its linear motion to the crankshaft, causing it to rotate. This rotation continues until the piston reaches the bottom of its stroke and starts moving upward again for the next cycle.

Since one complete rotation of the crankshaft corresponds to one cycle of the engine, it takes one full revolution of the crankshaft to complete one 2-stroke cycle. This is in contrast to a 4-stroke engine, where it takes two revolutions of the crankshaft to complete one full cycle (combustion, exhaust, intake, and compression). The simpler design of the 2-stroke engine allows for a higher power output per revolution, but it also leads to higher fuel consumption and emissions compared to a 4-stroke engine.

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Answer: The organism is an amoeba belonging to the protist kingdom.

Explanation: The organism cannot be placed in the plantae kingdom because the organism does not contain a cell wall or chloroplasts. The organism also cannot be bacteria or Archaebacteria because it has a nucleus. The organism cannot belong to the fungi or animalia kingdom because it contains psedupodium.

Answer:

Alternator

Explanation:

A device which converts mechanical energy into electrical energy.

I hope it helps.

(a) To determine the thermal efficiency of the power plant, we first need to calculate the heat input and the net work output.

The heat input can be calculated using the mass flow rate of steam and the enthalpy difference between the steam entering the turbine and the saturated liquid exiting the condenser:Q_in = m_dot * (h_in - h_cond)where:m_dot = mass flow rate of steamh_in = specific enthalpy of steam at the turbine inlet (from steam tables)h_cond = specific enthalpy of saturated liquid at the condenser exit (from steam tables)Using steam tables, we can find that h_in = 3466.2 kJ/kg and h_cond = 497.4 kJ/kg. Assuming a mass flow rate of 1 kg/s for simplicity, we have:Q_in = 1 * (3466.2 - 497.4) = 2968.8 kW

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I don't know

Explanation:

cfffffffffggg

Answer:

they agreed to reduce nuclear weapons

Answer:

A

Explanation:

Edu 2023

Answer:

As the impurity concentration in solid solution is increased, the tensile and yield strengths increases.

Explanation:

The addition of impurities in solid solutions shows an improved tensile and yield strength due to the grain refinement and obstacles to the motion of dislocation.

Example, the addition of carbon as impurity into iron, which forms steel shows a significant increase in the tensile and yield strengths of iron.

Blacksmiths also use work hardening to introduce dislocation into solid solutions in order to increase their  tensile and yield strengths.

Therefore, as the impurity concentration in solid solution is increased, the tensile and yield strengths increases.

A solid solution is a mixture of crystalline solids and is soluble over the partial or evenly complete range.

Hence the option Increases is correct.

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Sin 20 degrees has a value of 0.3420201. Sin (20° /180°), often known as sin (/9) or sin 20 degrees, is expressed in radians (0.349065. . .). With the use of examples, we will go over how to calculate sin 20 degrees in this post.

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Answer:

The correct option is - A categorical syllogism argues that A and B are both members of C whereas a conditional syllogism argues that if A is true then B is also true.

Explanation:

As,

Categorical syllogisms follow an "If A is part of C, then B is part of C" logic.

Conditional syllogisms follow an "If A is true, then B is true" pattern of logic.

So,

The correct option is - A categorical syllogism argues that A and B are both members of C whereas a conditional syllogism argues that if A is true then B is also true.

This is an image file for a labeled sewing machine. Its easy and understandable too, with correct names and structures.