Matrix Keypad Scan (5 points). Explain why we have to use external pull-up on the column pins in the keypad lab, instead of internal pull-up provided by each GPIO pin. 3.3V +3.3V +3.3v R2 Output Port (Output from rocsso R3 R4 C1 C2 C3 Input Port (Input to the processor)

Performance-Based Engineering (PBE) is an approach used to design building structures that consider how the structure responds in case of fire. By using this approach, it can be established the effectiveness of fire safety measures and if these measures meet the safety objectives of the building owner and local fire authorities.

There are two different example projects where performance-based engineering could add value to the project. These examples are not real but show how performance-based design could be a better option than prescriptive fire design.

Example 1: High-rise office building The first project is a 20-story high-rise office building that is still in the planning phase. This building has been designed to meet the minimum fire safety requirements of the building codes. The design is based on traditional methods where the objective is to protect the occupants from fire until the fire department arrives.

Example 2: Healthcare facility The second project is a new hospital that is under construction. This hospital will have several departments, including an emergency room, surgery rooms, and patient wards. Due to the complexity of the hospital, the building codes have been difficult to implement in the design of the hospital. Performance-based engineering could be used to demonstrate how the hospital can meet the safety objectives of the building owner and local fire authorities.

The key considerations to take into account include the cost and time required to conduct a performance-based analysis, determining the level of safety objectives, and taking into account the needs of the occupants and staff during an emergency.

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A Mealy machine alters its output in accordance with its input and status at the time. The output of a Moore Machine can only be determined by its current condition.

The current input is unrelated to it. Mealy and Moore State Machine construction takes place in Verilog. FSM definition Mealy and Moore State Machine construction takes place in Verilog. FSM definition A type of computer model known as a finite state machine, or FSM, simulates or explains sequential logic. What results from a Moore FSM? The current environment is the only element affecting the results of Moore FSM. Along with the current state, the current input also has an impact on the outputs. Mealy and Moore FSM share the same fundamental structure. To do this with a Finite State Machine controller, three states are required (3). In a finite state machine, only one state or event can happen at once.

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The design and implementation of a Read-only memory (ROM) using a BJT Transistor in LTspice allows for storing and displaying phone numbers for each student on a 7-segment display based on switch inputs.

Transistor to store phone numbers for each student and displaying them on a 7-segment display can be achieved through the following steps:

Step 1: Circuit Design

To begin, we need to design the circuit using a BJT Transistor and a 7-segment display. The ROM circuit will consist of multiple switches, each connected to a specific phone number for a student. When a switch is pressed, the corresponding phone number will be displayed on the 7-segment display.

Step 2: Implementation in LTspice

Once the circuit design is finalized, we can proceed with the implementation in LTspice. LTspice is a widely used circuit simulation software that allows us to test and verify the functionality of our circuit before actual implementation.

Step 3: Simulating the Circuit

Using LTspice, we can simulate the circuit and observe the desired behavior. By pressing each switch, we can check if the corresponding phone number is displayed correctly on the 7-segment display. This step ensures that the ROM is functioning as intended.

By following these steps, we can design, simulate, and test the implementation of a ROM using a BJT Transistor to store phone numbers for each student and display them on a 7-segment display.

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Answer:

control loop unit

Explanation:

Edmentum/Plato

Answer:

Option C, 10Base2, has the shortest specified cable length among the given options.

Explanation:

Answer:

C. Current will lead the voltage in the circuit.

Explanation:

The correct option is - C. Current will lead the voltage in the circuit.

Reason -

In the Resistive Capacitive load , current will lead the voltage by 90° .

So, the correct option is Current will lead the voltage in the circuit.

Answer:

Explained below

Explanation:

Perfect Elastic Plastic in steel design is simply a method whereby the structural members are selected using the criteria of the overall ultimate capacity of the system. However, when safety is considered, the applied loads are usually increased by factors of safety as prescribed in the relevant steel design codes. Therefore, this model of design is just based on the yield capacity of the steel.

The minimum coefficient of lift required at the point where the aircraft just lifts off the ground is approximately 0.806.

First, let's calculate the weight of the aircraft. We know that it is loaded to 92% of its maximum take-off weight. Let's assume the maximum take-off weight of the Boeing 777-200LR is 347,450 kg (764,000 lbs).

Weight = 0.92 * 347450 kg = 319,594 kg

Using the barometric formula, we can calculate the air density at the given elevation:

ρ = ρ0 * (1 - (0.0065 * h) / T0)^(g / (R * 0.0065))

Plugging in the values:

ρ = 1.225 * (1 - (0.0065 * 24.4) / 288.15)^(9.81 / (287.05 * 0.0065))

ρ ≈ 1.163 kg/m³

The wing area (S) of the Boeing 777-200LR is approximately 427.8 m^2.

Now, let's convert the takeoff speed from km/h to m/s:

V = 376 km/h * (1000 m/km) / (3600 s/h) = 104.4 m/s

Finally, we can substitute the values into the coefficient of lift equation:

CL = (2 * 319594 kg) / (1.163 kg/m³ * 427.8 m² * (104.4 m/s)²)

CL ≈ 0.806

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The primary hardware component of a computer that is responsible for routing data and instructions to and from the various components of a computer is the: bus.

A computer hardware can be defined as a physical component of an information technology (IT) or computer system that can be seen and touched.

Some examples of the hardware components of a computer system and these include:

A data bus can be defined as a type of hardware (wire) that is designed and developed so as to enable the transfer (routing) of data across the motherboard of a computer system.

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Java program that demonstrates the use of arraylist constructors. An output image of the program screen is attached. Correct answer: Option A (II only)

import java.util.*;

public class Main

{

 public static void main (String args[])

 {

   NumSequence c = new NumSequence ();

     c.inicialize (4);

}}

class NumSequence

{

 private ArrayList < Double > seq;

 public NumSequence ()

 {

   seq = new ArrayList < Double > ();

 }

 {

   for (int i = 0; i < numberOfValues; i++)

     {

seq.add (new Double (Math.random ()));

     }

   Iterator d = seq.iterator ();

   while (d.hasNext ())

     System.out.println (d.next ());

 }

}

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True, it should come from behind the electrode and

between the base metal and the electrode.

True is the correct answer.

The airstream should penetrate or come between the base metal and the electrode from the back during the CAC-A operation.

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Answer:

true

Explanation:

the answer is true because if u don't have a valid license when operating a vehicle and you get pulled over you will get in trouble i know this because my parents got in trouble for it once

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.

Answer:

The moment of inertia is basically a physical quantity which describes how easy it is for a body to rotate itself around a given axis.

In easier wording: Moment of Inertia is a body and when it starts rotating or moving, it will keep doing so until we stop it by force.

Explanation:

For example, a car that is moving and active will continue to move even if you were to switch the engine off.

The total cost of the 100−kW unit= Cost of 100−kW unit + Additional cost of the pre-compressor= $166,786 + $10,000= $176,786.

Given: Cost of 80-kW diesel-electric set six years ago = $145,000Cost index for this class of equipment six years ago = 187Cost index for this class of equipment now = 194Cost of 120−kW unit of the same general design to power a small isolated plant = $200,145

The plant engineering staff is considering a 100−kW unit of the same general design to power a small isolated plant.Cost of adding pre-compressor = $10,000

To determine the total cost of the 100−kW unit, we need to find the cost of the 80-kW diesel-electric set at present, the cost of the 100−kW unit, and the additional cost of the pre-compressor.Cost of 80-kW diesel-electric set at present= Cost of 80-kW diesel-electric set six years ago × (Cost index for this class of equipment now / Cost index for this class of equipment six years ago)= $145,000 × (194 / 187)= $150,816.34Cost per kW of the 80-kW diesel-electric set= Cost of 80-kW diesel-electric set at present / 80= $150,816.34 / 80= $1,885.20

Cost per kW of the 120−kW unit= Cost of 120−kW unit / 120= $200,145 / 120= $1,667.87The cost of the 100−kW unit of the same general design= 100 × Cost per kW of the 120−kW unit= 100 × $1,667.87= $166,786

Additional cost of the pre-compressor= $10,000. Hence, the total cost of the 100−kW unit is $176,786.

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Answer:

day if you workout without Zero billing that means you're not sweating. Sweating you're not losing anything that means you have zero outcomes

Explanation:

Answer

The skateboarder applies pressure to the trucks and gives/releases pressure on the levers. Second, the wheels and the axles are also examples of simple machines. They help the skater ride, spin, grind, and do a bunch of other radical movements on a skateboard.:

Explanation:

Answer:

the first one is the correct answer

Answer:

the first one would be correct

Explanation:

Answer:

False

Explanation:

It can only survive outside of the body for six days

Solution :

Given :

h = 2 cm

Diameter of the tube , d = 1 mm

Diameter of the hose, D = 6 mm

Between 1 and 2, by applying Bernoulli's principle, we get

As point 1 is just below the free surface of liquid, so

\($P_1=P_{atm} \text{ and} \ V_1=0$\)

\($\frac{P_{atm}}{\rho g}+\frac{v_1^2}{2g} +h = \frac{P_2}{\rho g}$\)

\($\frac{101.325}{1000 \times 9.81}+0.02 =\frac{P_2}{\rho g}$\)

\($P_2 = 111.35 \ kPa$\)

Therefore, 111.325 kPa is the gas supply pressure required to keep the water from leaking back into the tube.

Velocity at point 2,

\($V_2=\sqrt{\left(\frac{111.135}{\rho g}+0.02}\right)\times 2g$\)

   = 1.617 m/s

Flow of water,  \($Q_2 = A_{tube} \times V_2$\)

                               \($=\frac{\pi}{4} \times (10^{-3})^2 \times 1.617 $\)

                               \($1.2695 \times 10^{-6} \ m^3/s$\)

Minimum air flow rate,

\($Q_2 = Q_3 = A_{hose} \times V_3$\)

\($V_3 = \frac{Q_2}{\frac{\pi}{4}D^2}$\)

\($V_3 = \frac{1.2695 \times10^{-6}}{\pi\times 0.25 \times 36 \times 10^{-6}}$\)

    = 0.0449 m/s

b). Reynolds number in hose,

\($Re = \frac{\rho V_3 D}{\mu} = \frac{V_3 D}{\nu}$\)

υ for water at 25 degree Celsius is \($8.9 \times 10^{-7} \ m^2/s$\)

υ for air at 25 degree Celsius is \($1.562 \times 10^{-5} \ m^2/s$\)

\($Re_{hose}=\frac{0.0449 \times 6 \times 10^{-3}}{1.562 \times 10^{-5}}$\)

           = 17.25

Therefore the flow is laminar.

Reynolds number in the pipe

\($Re = \frac{V_2 d}{\nu} = \frac{1.617 \times 10^{-3}}{8.9 \times 10^{-7}}$\)

                = 1816.85, which is less than 2000.

So the flow is laminar inside the tube.

Answer:

The theoretical efficiency of the Otto engine is 59.4 percent.

Explanation:

The theoretical efficiency for Otto engine (\(\eta\)), dimensionless, is obtained by this formula after supossing that fluid is an ideal gas:

\(\eta = 1-\frac{1}{r^{\gamma -1}}\)

Where:

\(r\) - Compression ratio, dimensionless.

\(\gamma\) - Heat capacity ratio, dimensionless.

Given that \(r = 9.50\) and \(\gamma = 1.40\), the theoretical efficiency of the Otto engine is:

\(\eta = 1 - \frac{1}{9.50^{1.40-1}}\)

\(\eta = 0.594\)

The theoretical efficiency of the Otto engine is 59.4 percent.

When the process is in control but does not meet specification, it is referred to as a special cause error.

In statistical process control, a process is considered to be in control when it operates within the defined limits and shows only random variations. However, when a process is in control but does not meet the desired specifications, it indicates the presence of a special cause error.

Special cause errors are attributed to specific factors or events that cause the process to deviate from the expected outcome. These errors are typically unpredictable and require investigation and corrective action to bring the process back within the desired specifications.

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Evaluation is the methodical determination of a subject's validity, worth, and relevance using standards-based criteria.

Thus, It can help an organization, program, design, project, or any other intervention or initiative evaluate any goal, realizable concept or proposal, or any alternative, to aid in decision-making; or to determine the level of achievement or value in relation to the goal and objectives, as well as the outcomes of any such action that has been taken.

In addition to providing insight into past or current projects, evaluation's main goal is to promote introspection and help identify potential areas for future improvement.

In a variety of human endeavours, such as the arts, criminal justice, and other fields, evaluation is frequently used to describe and evaluate topics of interest.

Thus, Evaluation is the methodical determination of a subject's validity, worth, and relevance using standards-based criteria.

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The basic requirement of measurements is to have a standard or reference point against which to compare the quantity being measured. This standard or reference point should be well-defined and stable, and the measurement process should be repeatable and consistent. Additionally, it is important to ensure that the measurement equipment is calibrated and in good working condition.

Answer:

The most basic requirement for measurements is the presence of a standard or reference point against which the quantity being measured can be compared. The measurement process should be repeatable and consistent, and the standard or reference point should be well-defined and stable. Furthermore, ensure that the measurement equipment is calibrated and in good working order.

Explanation:

Answer:

b. American Society of Mechanical Engineers

Explanation:

The "American Society of Mechanical Engineers" (ASME) is an organization that ensures the development of engineering fields. It is an accreditation organization that ensures parties will comply to the ASME Boiler and Pressure Vessel Code or BPVC.

The BPVC is a standard being followed by ASME in order to regulate the different pressure vessels and valves. Such standard prevents boiler explosion incidents.

Answer:

The final velocity of the rocket is 450 m/s.

Explanation:

Given;

initial velocity of the rocket, u = 0

constant upward acceleration of the rocket, a = 18 m/s²

time of motion of the rocket, t = 25 s

The final velocity of the rocket is calculated with the following kinematic equation;

v = u + at

where;

v is the final velocity of the rocket after 25 s

Substitute the given values in the equation above;

v = 0 + 18 x 25

v = 450 m/s

Therefore, the final velocity of the rocket is 450 m/s.

The materials which are possible candidates are brass, stainless steel, aluminum and copper is to be subjected to a tensile load.

Tensile load, also known as tension, is a force applied to an object in order to extend, deform, or disrupt the object. Tensile load is the opposite of compressive load, which compresses or squeezes an object. Tensile load is often used in engineering and material science to measure the strength of a material or object. When a material is subjected to a tensile load, it will stretch and deform until it reaches its breaking point. The amount of force it takes to cause the material to reach its breaking point is known as the tensile strength of the material.

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yes it will

Explanation:

The concentration of chloride ions in the solution can be calculated by using the Nernst equation.

The Nernst equation is used to calculate the potential of an electrochemical cell under non-standard conditions. It relates the electrode potential to the concentrations of the species present in the solution.

The Nernst equation is:E = E° - (RT/nF) ln(Q)where, E is the cell potential under non-standard conditions,E° is the standard electrode potential, R is the gas constant, T is the temperature, n is the number of moles of electrons transferred, F is the Faraday constant, and Q is the reaction quotient.In this case, the standard cell potential (E°) is 0.115 V, and the measured cell potential (E) is 0.0925 V.

The reaction is given as:2AgCl(s) + 2e- → 2Ag(s) + 2Cl-(aq)We can see that n = 2 (two electrons are transferred in the reaction).The Nernst equation can be rearranged to solve for the concentration of chloride ions (Cl-) in the solution:ln(Cl-) = (E° - E)/(0.0592/n)ln(Cl-) = (0.115 - 0.0925)/(0.0592/2)ln(Cl-) = 0.378M[Cl-] = e^0.378M[Cl-] = 1.46 MTherefore, the concentration of chloride ions in the solution is 1.46 M.

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