PART I We want to build a data warehouse to store information on country consultations. In particular, we want to know the number of consultations, in relation to different criteria (people, doctors, specialties, etc. This information is stored in the following relationships: PERSON (Person_id, name, phone, address, gender) DOCTOR (Dr_id, tel, address, specialty)
CONSULTATION (Dr_id, Person_id, date, price) Tasks :
1. What is the fact table? 2. What are the facts? 3. How many dimensions have been selected? What are they? 4. What are the dimension hierarchies? Draw them. 5. Propose a relational diagram that takes into account the date, the day of the week, month, quarter and year.

Answer:

Bluray

DVD

CD

Explanation:

Blu ray can hold 25gb per layer

Dvd can hold 4.7GB on a single layer

Cd can hold around 737 mb

Also, dvds can go up to 2 layers

Blu ray can go up to 4

Answer:

CD

 ↓

DVD

  ↓

Blu-ray

Explanation:

The compression ratio and the mean effective pressure is 1448.9 kpa.

What is pressure?
The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure (symbol: p or P). The pressure relative to the surrounding air is known as gauge pressure, also written gauge pressure. Pressure is expressed using a variety of units. Some of these come from dividing a unit of force by a unit of area; the standard unit of pressure inside the imperial and U.S. customary systems is the pound-force per square inch (psi), which is equivalent to one newton per square metre (N/m2) in the SI. The atmosphere (atm), which is equal to this pressure, and the torr, which is defined as 1760 of this, are two other ways to describe pressure.

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Correct question is;

An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and a humidifier that supplies wet steam (saturated water vapor) at 100°C. Air enters the heating section at 10°C and 70 percent relative humidity at a rate of 35 m3/min, and it leaves the humidifying section at 20°C and 60 percent relative humidity. Determine (a) the temperature and relative humidity of air when it leaves the heating section, (b) the rate of heat transfer in the heating section, and (c) the rate at which water is added to the air in the humidifying section.

Answer:

A) Temperature at state 2: T2 = 19.5°C and Relative Humidity at state 2: Φ2 = 37.8%

B) Q' = 420.01 KJ/min

C) m'w = 0.1472 Kg/min

Explanation:

This question depicts a steady state process and as such the mass flow rate of dry air will remain constant during the entire process.

A) Now, from the psychometric chart attached, at temperatures of T1 = 10°C & T3 = 20°C, Relative humidities; Φ2 = 70% & Φ2 = 60% and at pressure of 1 atm, we have;

Enthalpy at state 1;h1 = 23.5 Kj/kg dry air

Absolute humidity at state 1;ω1 = ω2 = 0.0053 kg of water per kg dry air

Enthalpy at state 3;h3 = 42.3 KJ/Kg dry air

Absolute humidity at state 3; ω3 = 0.0087 kg of water per Kg dry air

Specific volume at state 1;υ1 = 0.809 m³/kg

The formula for energy balance for the humidifying is given as;

h3 = h2 + hg(ω3 - ω2)

Where hg is the enthalpy of wet steam.

From second table attached, hg at 100°C is 2675.6 KJ/kg

Thus;

Making h2 the subject, we have;

h2 = h3 + hg(ω2 - ω3)

Plugging in the relevant values we have;

h2 = 42.3 + 2675.6(0.0053 - 0.0087)

h2 = 33.2 KJ/kg

Still using the psychrometric chart attached at ω2 = 0.0053 and h2 = 33.2 KJ/kg, we have;

Temperature at state 2: T2 = 19.5°C and Relative Humidity at state 2: Φ2 = 37.8%

B) to determine the rate of heat transfer, let's first find the mass flow rate first;

m' = V1'/υ1

Thus, m' = 35/0.809

m' = 43.3 kg/min

Thus, rate of heat transfer is given by;

Q' = m'(h2 - h1)

Plugging in the relevant values, gives;

Q' = 43.3(33.2 - 23.5)

Q' = 420.01 KJ/min

C) the rate at which water is added to the air in the humidifying section is given by;

m'w = m'( ω3 - ω2)

m'w = 43.3(0.0087 - 0.0053)

m'w = 0.1472 Kg/min

As a local hardware store employee, I have concerns about the long-term consequences and risks of a gene drive for eliminating West Nile Virus.

Participant: A local hardware store employee

Post:

As a local hardware store employee, I have a vested interest in the well-being of the Phoenix community. I understand that the scientists from ASU are proposing the development of a gene drive to eliminate West Nile Virus in our area, and I believe it's crucial to have an open discussion about this research vision.

Firstly, I want to emphasize that I am not an expert in genetics or public health. However, I do have concerns and questions regarding the potential implementation of a gene drive for such a purpose.

My main concern revolves around the long-term consequences and potential risks associated with altering the genetic makeup of organisms, even if it is for a positive outcome like eliminating West Nile Virus. While the eradication of this disease is undoubtedly a worthy goal, we must ensure that the benefits outweigh any unintended negative effects.

Before I can fully support or oppose this research, I would like to better understand the safeguards that would be put in place to prevent any unintended ecological disruptions. What are the contingency plans if the gene drive were to have unintended consequences on non-target species? Are there measures in place to address potential resistance to the gene drive in the West Nile Virus-carrying mosquitoes? These are critical questions that must be answered to assess the feasibility and safety of this project.

Additionally, it would be crucial to involve a diverse range of stakeholders in the decision-making process. Engaging with experts in genetics, public health officials, and environmentalists, along with community members, will help ensure that all perspectives are taken into account. Transparency and inclusivity are key to fostering trust and ensuring that the decision ultimately made serves the best interests of our community.

In conclusion, while I recognize the importance of addressing the issue of West Nile Virus, I approach the proposal for a gene drive with caution. My starting position is one of skepticism and the need for further information. I believe a comprehensive risk assessment, robust stakeholder engagement, and a thorough examination of potential unintended consequences are necessary before making a final determination on supporting or opposing the project.

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To improve the acoustics in auditorium, a sound reflector with mass of 200 kg is suspended by a chain from the ceiling thus thet force (magnitude and direction) does the chain exert on it =1960 N.

Ths  0.33 regulation states that for each movement (pressure) in nature there's an identical and contrary response. If item A exerts a pressure on item B, item B additionally exerts an identical and contrary pressure on item A. In different words, forces end result from interactions.

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Answer:

The  average reactive power is \(I_{rms}V_{rms} cos \phi\)

Explanation:

For a single-phase AC circuit;

the peak current in the circuit is given as  \(I_o\)

the root-mean-square current is given by;

\(I_{rms} = \frac{I_o}{\sqrt{2}}\)

the peak voltage in the circuit is given as \(V_o\)

the root-mean-square voltage is given by;

\(V_{rms} = \frac{V_o}{\sqrt{2} }\)

The average reactive power is given by

\(P_{avg} = I_{rms}V_{rms} cos \phi\)

where;

\(cos \phi \ is \ the \ power \ factor\)

Therefore, the  average reactive power is \(I_{rms}V_{rms} cos \phi\)

The technique that allows for architects/engineers to build super-tall skyscrapers is by using a steel frame.

What is architect?
A person who plans, designs, and supervises the construction of buildings is known as an architect. To practise architecture is to offer services related to the planning of structures with a primary focus on human habitation or use, as well as the spaces within and around those structures. The qualifications needed to practise architecture vary by location. Because an architect's choices have an impact on public safety, they must complete specialised training that includes advanced education as well as a practicum (as well as internship) to gain real-world experience. Different jurisdictions have different practical, technical, as well as academic requirements to become an architect, but formal academic study of architecture has been essential to the growth of the field as a whole.

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Answer:

Connect your computer to the OBD(On-Board Diagnostics) port and see whats wrong

Explanation:

im a mekanic

mechanik

mecanic

meckanic

nvm, I fix cars

Answer:

Follows are the solution to the given question:

Explanation:

In the environment of the piles of earth, its spacecraft faces extreme temperatures:

Therefore, to prevent satellite build sustainability, a temperature control system must be used.

Its skin must be rather permeable in physiological terms.

Its shuttle's surface should have adhered to both the material well.

Whether it gets broken, it ought to be easy to repair.

All tile mostly on the cutter is composed of silicon dioxide particles, that are bonded and create a tile of very low density.

Its heat transfer is so small that even a person may hold a burning hot side on one side of the tile.

Skin that uses a rubber resin to ensure that perhaps the powers may not release the cutting that heat-treated will then the internal body.

The design requirements that led to the combination of ceramic tiles and aluminium materials for the hull of shuttle space are; discussed below.

The space shuttle experiences extreme temperatures during re-entry into the earths atmosphere. Thus, as a result, a thermal protection system must be provided to help prevent damage of the shuttle structure.

Therefore, the skin must be made up of material that has an exceptionally low thermal conductivity and also the material must be able to be firmly attached to the skin and also be able to be easily repaired in case of any damage.

Secondly, the tiles used on the space shuttle will have to be composed of silica fibers that are bonded together to generate a ceramic of low density. The thermal conductivity of the ceramic would have to be low such that if you touch one end while the other is very hot, you will not feel the hotness.

Now, the tiles will be attached to the shuttle skin with the aid of a rubbery polymer which ensures that the forces don't break the tile loose which will then expose the underlying skin to high temperatures.

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Answer:

The appropriate answer will be "2353.8 K". A further solution is given below.

Explanation:

The given values are:

Ultimate capacity,

= 1700kN

Resistance factor,

F.S = 0.65

According to the the LRFD, the allowable bearing pressure will be:

⇒ \(Pallo w = \phi_c\times \frac{Pn}{F.S}\)

On substituting the values, we get

⇒             \(=0.9\times \frac{1700}{0.65}\)

⇒             \(=2353.8 \ K\)

According to the the ASD, the allowable bearing pressure will be:

⇒ \(Pallow=\frac{Pn}{\Omega \times F.S}\)

On substituting the values, we get

⇒             \(=\frac{1700}{1.67\times 0.65}\)

⇒             \(= \frac{1700}{1.0855}\)

⇒             \(=1845.35 \ K\)

Answer:

a. True

Explanation:

The study of fluids in a state of rest or in motion and the forces involved in it is called fluid mechanics. Fluid mechanics has a wide range of applications in the field of mechanical engineering as well as civil engineering.

When we study the flow of fluid between any two flat plates that is indefinitely flat and is parallel, the flow of the fluid is known as plane Poiseulle flow. The profile of a plane Poiseulle flow is parabolic.

The velocity profile of a plane Poiseulle flow is :

\($\frac{u(y)}{U_{max}}=1-\left(\frac{2y}{h}\right)^2$\)

Thus the answer is TRUE.

It is uncommon for electrocution to cause crane incidents: False.

Electrocution can be defined as a process through which a certain amount of electric current (electricity) passes through the body of a living organism, thereby, leading to death or severe injury.

According to the occupational safety and health administration (OSHA), it is very common for electrocution to cause crane incidents and accidents when adequate safety precautions are not adopted.

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Note that the magnitude of the resultant active thrust on the wall is 876.69 kN.

To calculate the magnitude of the resultant active thrust on the wall, we need to use Rankine's theory of earth pressure.

Let's assume that the wall height is also 5.4 meters, and the angle of wall friction is zero.

Then, the total active thrust (Q) is given by:

Q = Ka * H * gamma * H/2

Where,

Ka = Active earth pressure coefficient

H = height of the wall

gamma = unit weight of soil

The active earth pressure coefficient can be calculated using the following formula:

Ka = (1 - sin(phi)) / (1 + sin(phi))

Where, phi = angle of shearing resistance of soil

Substituting the given values, we get:

phi = 30 degrees

H = 5.4 meters

gamma = 19.8 kN/m^3

Ka = (1 - sin(30)) / (1 + sin(30)) = 1/3

Q = Ka * H * gamma * H/2 = (1/3) * 5.4 * 19.8 * 5.4/2 = 876.69 kN

Therefore, the magnitude of the resultant active thrust on the wall is 876.69 kN.

The line of action of the resultant active thrust on the wall will be at one-third of the height of the wall from the bottom. Therefore, the line of action of the active thrust will be at a height of 1.8 meters from the bottom of the wall.

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Answer:

l/blouoojiklnkjhljm,jl,mj l, j/ll

Answer:

This program uses the int 16h interrupt to query an integer from the keyboard and store it in the al register. The program then enters a loop, in which it calculates the next day of the week using the add, mov, div, and cmp instructions, and displays the appropriate message using the int 21h interrupt. The program exits the loop and ends when the user presses the ESC key (ASCII code 27).

In snooker, the maximum number of points that can be scored during a single frame is 147. This is achieved by potting all 15 red balls, each worth 1 point, and subsequently potting the colored balls in sequence: yellow (2 points), green (3 points), brown (4 points), blue (5 points), pink (6 points), and black (7 points). Each color is then returned to its original position and can be potted again for additional points.

The angle and wind speed mentioned in your question are not relevant to determining the maximum number of points in a snooker frame. The speed and direction of the balls are controlled by the player's shots, and the rug coating on the table doesn't affect the scoring.

So, regardless of the angle, wind speed, or table surface, the maximum number of points that can be scored in a frame of snooker is 147.

The transfer function can be calculated using the given equation as follows: R (s) = 1/S S + 9/(S+3) (S+8) (S+1) C(s)The transfer function of a system is defined as the ratio of the Laplace transform of the output variable to the Laplace transform of the input variable with all initial conditions equal to zero.

Transfer function H(s) can be calculated as follows: H(s) = C(s)/R(s)Hence, H(s) = C(s)/R(s)H(s) = R (s)/[S{S + 9/(S+3) (S+8) (S+1)}] The transfer function of a system is defined as the ratio of the Laplace transform of the output variable to the Laplace transform of the input variable with all initial conditions equal to zero. Transfer function H(s) can be calculated as follows: H(s) = C(s)/R(s)Hence, H(s) = C(s)/R(s)H(s) = R (s)/[S{S + 9/(S+3) (S+8) (S+1)}]The transfer function can be calculated using the given equation. The transfer function H(s) is the ratio of the Laplace transform of the output variable to the Laplace transform of the input variable.

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False. Fire extinguishing equipment cannot be frozen according to Ref. 213/91.

According to Ref. 213/91, fire extinguishing equipment cannot be frozen. Fire extinguishers are essential safety devices designed to combat fires effectively. They contain pressurized agents that are specifically formulated to extinguish different types of fires. Freezing temperatures can significantly impair the functionality of fire extinguishers and render them ineffective in emergency situations.

When fire extinguishing equipment freezes, several issues can arise. First, the contents of the extinguisher may expand as they freeze, potentially leading to ruptures or leaks in the container. This can cause the extinguisher to malfunction or become hazardous when used. Second, freezing temperatures can affect the performance of the extinguishing agent itself. Certain agents, such as water-based solutions, can solidify or lose their effectiveness when exposed to extreme cold.

It is crucial to store fire extinguishers in suitable environments that are above freezing temperatures. This ensures that the equipment remains in optimal condition and is ready for immediate use during emergencies. Regular inspections and maintenance are also essential to identify any signs of damage or deterioration that may compromise the functionality of fire extinguishers.

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This query would display a table with two columns: Year and Row_N. The Year column would contain the year in which the Summer Olympic games were held, and the Row_N column would contain a sequential number assigned to each year. The resulting table would be ordered by year in ascending order.

The provided SQL query assigns a number to each year in which Summer Olympic games were held using the ROW_NUMBER() function. The query first selects the distinct years from the Summer_Medals table, orders them in ascending order, and then assigns a row number using ROW_NUMBER() function. The resulting table, Table 1.2, displays the first 10 records of Summer Olympic game years along with their assigned row numbersTo assign a number to each year in which Summer Olympic games were held, you can use the ROW_NUMBER() function in a SELECT statement. First, you would need to create a subquery that selects distinct years from the Summer_Medals table and orders them in ascending order. Then, you would use the ROW_NUMBER() function to assign a sequential number to each year. The resulting query would look something like this: SELECT
Year,-- Assign numbers to each year ROW_NUMBER() OVER () AS Row_N FROM (SELECT DISTINCT Year FROM Summer_Medals ORDER BY Year ASC) AS Years ORDER BY Year ASC;

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The query uses SELECT and DISTINCT to retrieve a list of unique years from the Summer_Medals table, ordered by Year in ascending order. The ROW_NUMBER() function is used to assign a number (Row_N) to each year.

To assign a number to each year in which Summer Olympic games were held, you can use the following SQL query:
SELECT
Year,
-- Assign numbers to each year
ROW_NUMBER() OVER () AS Row_N
FROM (
SELECT DISTINCT Year
FROM Summer_Medals
ORDER BY Year ASC
) AS Years
ORDER BY Year ASC;

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The determination of magnetic forces and torques is a significant aspect of physics that has many practical applications.

It is incredibly useful in understanding how magnetic fields interact with current-carrying conductors and loops. Knowing the magnetic forces on a current-carrying conductor allows us to understand how it will move in the presence of a magnetic field.

This is important in many areas of technology, such as electric motors and generators, which rely on magnetic forces to produce motion.

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The density of the object is 3333.33 kg/m³. The density of an object is a measure of how heavy it is for a given size, i.e. the mass of material per unit volume.

Gravity, also known as gravitational force, pulls objects with mass toward each other. We frequently consider the force of gravity from Earth. This force is responsible for keeping your body on the ground. Any object with mass, on the other hand, exerts a gravitational force on all other objects with mass.

Density: This can be defined as the ratio of the mass of a body to its volume.

The unit of density is kg/m³.

From Archimedes principle,

R.d = W/U = D/D'

Where R.d = relative density, W = weight of the object in air, u = upthrust in water, D = Density of the object, D' = Density of water.

W/U = D/D'

making D the subject of the equation

D = D'(W/U).......................... Equation 1

Given: W = 5.0 N, U = 5.0 -3.5 = 1.5 N, D' = 1000 kg/m³

U = lost in weight = weight in air - weight in water

Substitute into equation 1

D = 1000(5/1.5)

D = 3333.33 kg/m³

Thus the density of the object = 3333.33 kg/m³

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Answer:

The outer diameter of the ball is 6.2138 cm

Explanation:

The formula to apply is ;

Heat loss ,

\(Q/t=kA*\frac{( T_1-T_2)}{d}\)

where ;

Q/t=total heat loss from the ball = 1600 w

k=coefficient of heat transmission through the ball= 2.75 W/m.˚C

A=area in m² of the ball with the coefficient of heat transmission

T₁=Hot temperature

T₂=Cold temperatures

d=thickness of the ball

Area of spherical ball using internal diameter, 3cm= 0.03 m will be

Radius = half the diameter = 0.03/2 = 0.015

Area = 4 *π*r²

Area = 4*π*0.015² = 0.002827 m²

Apply the formula for heat loss to get the thickness as:

1600 = {2.75 * 0.002827 *(250-30 ) }/d

1600 =1.711/d

1600d = 1.711

d=1.711/1600 = 0.001069 m

d= 0.1069

Using internal radius and the thickness to get outer radius as;

3 + 0.1069 = 3.1069 cm

Outer diameter will be twice the outer radius

2*3.1069 = 6.2138 cm

Binary operators are defined as those that operate on two operands.

A simple method for assessing numerical values and character strings is provided by operators, which are stated using special characters.

In computer science, an operator is a letter or group of letters that determines the action to be executed or the elements to be considered. Arithmetic players, relation operations, and logical operators are the three main types of operators used by programmers.

To put it another way, an operator is a symbol that tells the compiler to do specific logical, mathematical, or conditional operations. It performs as a symbol on an integer or even a variable. The operators to utilize, for instance, are + and -.

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Sorry sir i don't know the answer