Explain the principles of electromagnetism (discuss permeability, reluctance, and magnetomotive force. Describe a basic electromagnet. Also discuss how current is induced in a conductor. What are some applications that use electromagnets?
Answers
Motors, generators, electromechanical solenoids, relays, loudspeakers, hard drives, MRI machines, scientific instruments, and magnetic separation equipment all employ electromagnets as components.
What are some applications that use electromagnets?Every magnet has a north and a south pole. Like poles repel, but opposite poles attract.
Electrons in magnet atoms spin predominantly in one direction around the nucleus, which is how the two poles are formed. Magnetic force goes from the magnet's north pole to its south pole.
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A liquid with a specific gravity of 2. 6 and a viscosity of 2. 0 cP flows through a smooth pipe of unknown diameter, resulting in a pressure drop of 0. 183 lb/in? for 1. 73 mi. What is a pipe diameter in inches if the mass rate of flow is 7000 lb/h?
Answers
Let us list the parameters given to solve for the diameter of the pipe based on the information. The pipe diameter will be 3.48 inch.
The specific gravity of the liquid (SG) = 2.6
The density of the liquid = (S.G × density of water) = 2.6 × 1000 kg/m³
= 2600 kg/m³
Using the standard conversion rates:
The viscosity = 2.0 c P = 0.002 kg/m. s
The pressure drop ΔP = 0.183 l b f/in²
Since 1 l b f/in² = 6894.76 N/m²
∴
The pressure drop ΔP = 0.183 I b f/in² = 1261.74 N/m²
The length of the pipe = 1.73 mi = 2784.165 m
Mass flow rate = 7000 l b/h = 0.882 kg/s
Let us begin by calculating the volumetric flow rate of the liquid in the pipe using the information provided.
The volumetric flow rate(Q)=mass flow rate/density of the liquid
Q=0.882 kg/s/2600 kg/m3
Q=0.00034 m3/S
Using the pressure drop formula to estimate the pipe diameter in a cylindrical flow pipe, we have:
Δp/p g=8fLQ2/π^2gd^5....(1)
where (f) can be computed as;
f=64/p v d/u
f=64/p Q d/Au
replacing the values from the above-listed parameters, we have:
f=64/2600x0.00034xd/π/4(d)2x0.002
f=64/2600x0.00034xdXπ/4(d)2x0.002/1
F=0.1137d
From equation (1), Recall that
Δp/p g=8fLQ2/π^2gd^5
Δp/p =8fLQ2/π^2d^5
Replacing the values, we have;
1261.74/2600=8x0.1173(d)x(2784)x(0.00034)^2/π^2(d)^5
0.48528=2.966X10^-5/(d)^4
D^4=2.966x(10)^-5/0.48528
D^4=6.11193538x10^-5
d=4√6.11193538x10^-5
d=0.0884m
since 1 mm = 0.0393701 inch
∴
88.4 mm will be = 3.48 inches
Therefore, we can conclude that the diameter of the pipe = 3.48 inches.
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Computing wind turbine output power with linear regression.
A wind turbine manufacturer provides the power produced by the turbine (outputPwrData) given various wind speeds (windSpeedData). A straight line fits the measured output power well for mid-range wind speeds (6-12 m/s). Use linear regression to fit a first-order polynomial (straight line) to estimate output power given a mid-range input windSpeed.
Isolate the measured values used for fitting:
Assign windSpeedFitData with windSpeedData in mid range of wind speeds (6-12 m/s)
Assign outputPwrFitData with outputPwrData in mid range of wind speeds (6-12 m/s)
Calculate the first-order polynomial coefficients that fits the isolated values:
Assign outputPwrCoefs with linear regression coefficients
Make use of coefficients to calculate the value of the polynomial at input windSpeed
Assign outputPwrEst with estimate calculated using linear regression coefficients
Answers
To compute wind turbine output power with linear regression, we first need to gather data on various parameters such as wind speed, blade length, and rotation speed. Once we have collected the data, we can use linear regression to build a model that predicts the output power of the turbine based on these parameters.
To do this, we will need to first determine the coefficients for our linear regression equation. This can be done using various techniques such as ordinary least squares (OLS) or gradient descent. Once we have determined the coefficients, we can then use them to estimate the output power of the turbine based on new data.To assign outputPwrEst with an estimate calculated using linear regression coefficients, we will need to plug in the values for the relevant parameters into our linear regression equation. This will give us an estimated output power for the turbine based on the data we have collected. We can then use this estimate to make decisions about the performance of the turbine or to optimize its operation.Overall, using linear regression to compute wind turbine output power can be a valuable tool for engineers and operators looking to optimize the performance of these important energy-generating machines. By carefully collecting and analyzing data, we can build accurate models that help us to predict the behavior of the turbine and optimize its output power.For such more qusetion on parameters
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To compute wind turbine output power with linear regression, you first need to isolate the measured values used for fitting.
This involves assigning windSpeedFitData with windSpeedData in the mid-range of wind speeds (6-12 m/s) and outputPwrFitData with outputPwrData in the mid-range of wind speeds (6-12 m/s).
Next, you need to calculate the first-order polynomial coefficients that fit the isolated values. This can be done using linear regression coefficients, which can be assigned to outputPwrCoefs.
Once you have the coefficients, you can use them to calculate the value of the polynomial at the input wind speed. This estimate can be assigned to outputPwrEst.
In summary, to compute wind turbine output power with linear regression, you need to isolate the measured values used for fitting, calculate the first-order polynomial coefficients that fit the isolated values using linear regression, and use these coefficients to calculate the value of the polynomial at the input windSpeed.
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Which of the following can not be used to store an electrical charge?
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How often might ergonomic training be offered in the workplace
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Answer:
'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?
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Explanation:
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Assume that a pond has a single outlet in the form of a small stream. The flow rate of that stream 2.3 m3/s. If the flow rate does not change, how many gallons of water will be lost in a week?
1b) Calculate the density of a 347.5 g sample of copper if it has a volume of 41.8 cm3.
Answers
1) The number of gallons of water lost in a week would be approximately (2.3 m³/s * 604,800 seconds) * (1000 liters/m³) * (0.264172 gallons/liter).
2) The density of the copper sample is approximately 8.32 g/cm³ (347.5 g / 41.8 cm³).
To calculate the number of gallons of water lost in a week, we first need to determine the volume of water that flows through the stream in one week.
Given:
Flow rate of the stream = 2.3 m³/s
To convert the flow rate to the volume of water in one week, we need to convert the time unit from seconds to weeks. There are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 7 days in a week.
1 week = 7 days * 24 hours * 60 minutes * 60 seconds = 604,800 seconds
Volume of water in one week = Flow rate * Time
Volume of water in one week = 2.3 m³/s * 604,800 seconds
Now, let's convert the volume from cubic meters (m³) to gallons.
1 cubic meter = 1000 liters
1 liter = 0.264172 gallons
Volume in gallons = (Volume in cubic meters) * (1000 liters/m³) * (0.264172 gallons/liter)
Finally, we can calculate the number of gallons of water lost in a week.
Volume in gallons = (2.3 m³/s * 604,800 seconds) * (1000 liters/m³) * (0.264172 gallons/liter)
Please note that the flow rate might change due to various factors, but for the given scenario and assumptions, this calculation provides an estimate.
1b) To calculate the density of the copper sample, we'll use the formula:
Density = Mass / Volume
Given:
Mass of the copper sample = 347.5 g
Volume of the copper sample = 41.8 cm³
Density = 347.5 g / 41.8 cm³
=8.32 g/cm³
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shorter wavelength in radical photo initiator means:
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Shorter wavelength in a radical photo initiator means that the energy level of the light used to activate the initiator is higher. This is because the wavelength and energy of light are inversely proportional, meaning that shorter wavelengths correspond to higher energies.
In the context of radical photo initiation, this higher energy is necessary to break apart the initiator molecule and create free radicals, which are highly reactive species that can start polymerization reactions. The choice of wavelength used for radical photo initiation is important because it determines the depth of penetration of the light into the material being polymerized. Shorter wavelengths, which have higher energies, can penetrate deeper into the material and activate initiators that are farther away from the surface. This can be advantageous for certain applications, such as coating or printing, where uniform polymerization throughout the thickness of the material is desired. However, shorter wavelengths can also cause unwanted side reactions or damage to the material being polymerized. Overall, the choice of wavelength in radical photo initiation should be carefully considered based on the specific application and desired polymerization characteristics.
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The reading on the 0 to 25 mm micrometer provided is
A. 15.20
B. 15.70
C. 15.45
D. 0.1520
Answers
Based on the image attached, the reading of micrometer is= 15.20.
What do the numbers on a micrometer represent?You will see a line of numbers running down the barrel of your micrometer, starting with the barrel scale. On the barrel scale, each number corresponds to 0.100. Looking at the barrel, 1 equals 0.100, 2 equals 0.200, 3 equals 300, and so on. The distance between each tick mark and the larger numbers on the barrel is 0.025, or 25 thousandths.
Note that micrometer is one that is also referred to as a micrometer screw gauge—is a tool with a calibrated screw that is frequently used for precise measurement of components in mechanical engineering, and others.
Looking at the image, you will see the stop ends at 15 and and 20 so adding them together will be option A. 15.20.
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A cylindrical bar of metal having a diameter of 19.2 mm and a length of 207 mm is deformed elastically in tension with a force of 52900 N. Given that the elastic modulus and Poisson's ratio of the metal are 61.4 GPa and 0.34, respectively, determine the following:
a. The amount by which this specimen will elongate in the direction of the applied stress.
b. The change in diameter of the specimen. Indicate an increase in diameter with a positive number and a decrease with a negative number.
Answers
Answer:
1)ΔL = 0.616 mm
2)Δd = 0.00194 mm
Explanation:
We are given;
Force; F = 52900 N
Initial length; L_o = 207 mm = 0.207 m
Diameter; d_o = 19.2 mm = 0.0192 m
Elastic modulus; E = 61.4 GPa = 61.4 × 10^(9) N/m²
Now, from Hooke's law;
E = σ/ε
Where; σ is stress = force/area = F/A
A = πd²/4 = π × 0.0192²/4
A = 0.00009216π
σ = 52900/0.00009216π
ε = ΔL/L_o
ε = ΔL/0.207
Thus,from E = σ/ε, we have;
61.4 × 10^(9) = (52900/0.00009216π) ÷ (ΔL/0.207)
Making ΔL the subject, we have;
ΔL = (52900 × 0.207)/(61.4 × 10^(9) × 0.00009216π)
ΔL = 0.616 × 10^(-3) m
ΔL = 0.616 mm
B) Poisson's ratio is given as;
υ = ε_x/ε_z
ε_x = Δd/d_o
ε_z = ΔL/L_o
Thus;
υ = (Δd/d_o) ÷ (ΔL/L_o)
Making Δd the subject gives;
Δd = (υ × d_o × ΔL)/L_o
We are given Poisson's ratio to be 0.34.
Thus;
Δd = (0.34 × 19.2 × 0.616)/207
Δd = 0.00194 mm
based on elasticity theory, the stress is predicted to be infinite at a re-entrant corner of a plane stress model. to avoid false answers using the finite element method based on linear elastic material model assumptions, what must be done to the model?
Answers
"Use a theory that accounts for material yielding" to avoid false answers that use the method of finite elements based on linear elastic material model assumptions.
What is termed as the elasticity theory for stress?The ability of solid materials to deform when subjected to an external force and then return to their initial shape after forces have been removed is referred to as elasticity. The external force acting on a specific area is referred to as stress, and the degree of deformation is referred to as strain.Linear elasticity's fundamental "linearizing" assumptions are: infinitesimal strains or "limited" deformations (or strains), and linear relationships between stress and strain components. Furthermore, linear elasticity is only valid for stress states that don't result in yielding.Thus, "Use a theory that accounts for material yielding" to avoid false answers that use the method of finite elements based on linear elastic material model assumptions.
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A driver counts 21 other vehicles using 3 EB lanes on one section of I-80 between her rented car and an overpass ahead. It turned out to be 0.78 mile to the overpass from the point at which she started her vehicle count. The vehicles were moving at approximately 52 mph at the time. Traffic was distributed evenly over the three EB lanes.
Required:
a. Calculate the vehicle density per lane (excluding the driver's rental vehicle) on that stretch of EB I-80.
b. What was the flow rate for that section of I-80?
Answers
Answer:
vehicle density = 28.205 veh/mile
flow rate = 0.909 veh/hr
Explanation:
given data
count n = 21
distance = 0.78 miles
speed = 52 mph
solution
we get here vehicle density that is express as
vehicle density = n ÷ distance ...............1
vehicle density = ( 21 + 1 ) ÷ 0.78
vehicle density k = 28.205 veh/mile
and
now we get here flow rate that is express as
flow rate = k × vs .................2
flow rate = 28.205 × ( 52 × 0.00062 ÷ 1m )
flow rate = 0.909 veh/hr
Refrigerant-134a enters a 28-cm-diameter pipe steadily at 200 kPa and 20°C with a velocity of 5.5 m/s. The refrigerant gains heat as it flows and leaves the pipe at 180 kPa and 40°C. The specific volumes of R-134a at the inlet and exit are 0.1142 m3/kg and 0.1374 m3/kg. Determine (a) the volume flow rate of the refrigerant at the inlet, (b) the mass flow rate of the refrigerant, and (c) the velocity and volume flow rate at the exit.
Answers
Answer:
(a) The volume flow rate of the refrigerant at the inlet is 0.3078 m3/s
(b) The mass flow rate of the refrigerant is 2.695 kg/s
(c) The velocity and volume flow rate at the exit is 6.017 m/s
Explanation:
According to the given data we have the following:
diameter of the pipe=d=28 cm=0.28 m
inlet pressure P1=200 kPa
inlet temperature T1=20°C
inlet velocity V1=5.5 m/s
Exit pressure P2=180 kPa
Exit Temperature T2=40°C
a. To calculate the volume flow rate of the refrigerant at the inlet we would have to use the following formula:
V1=AV1
=π/4(0.28∧2)5
V1=0.3078 m3/s
b. To calculate the mass flow rate of the refrigerant we would have to use the following formula:
m=p1 V1
m=V1/v1
=0.3078/0.11418
=2.695 kg/s
c. To calculate the velocity and volume flow rate at the exit we would have to use the following formula:
m=m1=m2
V1/v1=V2/v2
V2=(v2/v1)v1
=(0.13741/0.11418)5
=6.017 m/s
Is it possible to get the Laplace of the Heat transfer equation?
If so what is it?
Q = mc* T/dt
Thanks in advance
Answers
Yes, it is possible to obtain the Laplace transform of the heat transfer equation.
The Laplace transform is an essential tool in solving differential equations because it converts differential equations into algebraic equations that can be quickly solved.The heat transfer equation is given by:Q = mc(T)/dtTaking the Laplace transform of both sides, we have:L(Q) = L(mc(T))/L(dt)Using the property of the Laplace transform, L(d/dt f(t)) = sL(f(t)) - f(0), we have:L(Q) = L(mc(T))/sThe Laplace transform of mc(T) can be evaluated as follows: L(mc(T)) = m*c* L(T)Applying the Laplace transform on both sides of the equation dT/dt = Q/mc, we have:L(dT/dt) = L(Q/mc)Using the property of the Laplace transform, L(d/dt f(t)) = sL(f(t)) - f(0), we have:sL(T) - T(0) = L(Q)/mcRearranging, we get:L(T) = (1/ms)(L(Q)/c + T(0))Thus, the Laplace transform of the heat transfer equation is:L(T) = (1/ms)(L(Q)/c + T(0))
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The company PureNSafe is designing a portable, solar-powered disinfection system for Army use only. The system is simply an inlet pipe, a pump, a mixing chamber and an outlet pipe. The water is continuously pumped into the chamber where it is irradiated with UV light before it exits through the the appropriate tube into a collection vessel. The disinfection rate constant rate of disinfection with UV light is 7.80 s.1 and the amount of bacteria has to be reduced by 99.9%. be reduced by 99.9%. Since the Army requires an object that can be carried in a backpack, it requires that the chamber of the apparatus must not hold a capacity greater than 2 L. How much water will the system be able to produce during 10 hours of sunshine?
Answers
Solution :
The treatment system will operate as the well mixed chamber.
Disinfection rate constant for the UV light, k is 7.80 /s. Number of bacteria in water need to be reduced by 99.9%
Percent reduction of bacteria should be \($(1-10^{0.99}) \times 100 =89.7\%$\)
Volume of the unit chamber is fixed at 2L
Assume the inlet concentration, \($C_0$\) as 1000
The outlet concentration of bacteria, C should be \($1000-\left(1000 \times \frac{89.7}{100}\right)$\)
= 103
The well mixed chamber will then follow a completely mixed flow reactor model.
Compute the time required :
\($t=\frac{1}{k}\left(\frac{C_0}{C}-1\right)$\)
\($t=\frac{1}{7.8}\left(\frac{1000}{103}-1\right)$\)
= 1.115 s
Flow through the system is \($\frac{2 \ L}{1.115 \ s}$\) = 1.79 L/s
The amount of water treated during the 10 hours of sunlight is 1.79 x 10 x 60 x 60 = 64440 L
if the average speed of a car is 45 km/jr, how far can it travel in 40 minutes?
Answers
Answer:
30km
Explanation:
speed = distance ÷ time
how to fill osprey hydraulics lt
Answers
To refill the reservoir:
Disengage the Slide-Seal™ mechanism and unfurl the PourShield™, allowing it to fulfill its purpose.Gently compress the PourShield™ with one hand, generating a broad aperture, while maintaining stability by grasping the carry handle with your other hand.Reinstate the Slide-Seal™ to its rightful position and invert the reservoir, diligently inspecting for any insidious leaks. Moreover, expel surplus air to curtail superfluous agitation within the reservoir.What are hydraulics?Hydraulics, a mechanical function that operates through liquid pressure. Within the realm of hydraulics-driven systems, the captivating dance of mechanical motion unfolds, intricately woven by the sheer might of encapsulated, propelled fluid.
It is this symphony of forces that breathes vitality into machinery, propelling the very essence of motion through the graceful interplay of hydraulic cylinders, orchestrating the eloquent journey of pistons.
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a transformer is connected as a step-down transformer with a 10:1 turns ratio. if the primary voltage is 100 v, what is the voltage of the secondary? question 1 options: vsec
Answers
The correct answer is 600v is the voltage of the secondary of a transformer.
A transformer is an electrical apparatus that manipulates the level of voltage flowing through any point in a power grid. In a distribution system, the transformer decreases the voltage traveling through power lines to a level more suitable for residential and commercial use.An electrical device that can change the A.C. current is known as a transformer. Principle – A transformer works on the principle of mutual induction. Mutual induction is the phenomenon by which when the amount of magnetic flux linked with a coil changes, an E.M.F. is induced in the neighboring coil.
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__________ material allowed for the construction of huge, glass-fronted skyscrapers.
Answers
steel material allowed for the construction of huge, glass-fronted skyscrapers.
What are steel materials?The compound referred to as "Steel" consists mainly of two elements: iron and carbon, wherein molten iron receives added amounts of the latter component during production. The quantity of said element included influences essential attributes like malleability (low levels) or hardness (high levels).
Its sturdy composition renders this versatile material ideal for constructing buildings that need substantial support; furthermore, its affordability compared to other materials made it an economically sound choice for numerous developers worldwide.
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The bonus rates for each salesperson are determined by sales amounts using the following scale: Sales greater than $35,000 earn a bonus rate of 5%, sales greater than $25,000 earn a bonus rate of 4%. All other sales (any amount greater than 0) earn a bonus rate of 2%. With the sheets still grouped, in cell C5 use an IFS function to determine the commission rate for the first salesperson whose sales are in cell B5. Fill the formula down through cell C8.
Answers
Assuming that cell B5 contains the sales amount for the first salesperson, the IFS function to determine the commission rate in cell C5 is:
=IFS(B5>35000, 0.05, B5>25000, 0.04, B5>0, 0.02)
This formula checks the sales amount in B5 against each threshold amount in descending order (starting with $35,000), and returns the corresponding bonus rate if the sales amount is greater than that threshold. If the sales amount is less than or equal to zero, it returns a bonus rate of 0%.
To fill the formula down through cell C8, select cell C5 and drag the fill handle down to cell C8. This will copy the formula to the other cells in the group, adjusting the cell references as needed.
The accumulation of excess electrical charges on an object is known as?
Answers
The accumulation of excess electrical charges on an object is known as electrostatics.
The excess electrical charges on an object can either be positive or negative. The negative charge has an excess of electrons while the positive charge has a lack of electrons. The term electrostatics was first used by British scientist William Gilbert in 1600 to describe the study of electrical charges at rest.Electrostatics is important because it helps us to understand the fundamental principles of electrical charges, which is a significant part of the science of physics. Electrostatics is also used in everyday life.
For example, electrostatics can be used to remove dust from furniture and floors, as well as in photocopying machines and air filters. It is also used in industrial applications such as painting, where a charged spray of paint is directed towards an object that is grounded, causing the paint to stick to the object.There are different types of electrostatics. The first is static electricity, which is the buildup of electric charges on an object at rest. The second is current electricity, which is the flow of electric charges through a conductor.
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The mechanical energy of an object is a combination of its potential energy and its
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The mechanical energy of an object is a combination of its potential energy and its kinetic energy.
The toxicity of DDT (C14H9Cl5) led to a ban on its use in the United States in 1972. Determinations of DDT concentrations in groundwater samples from Pennsylvania between 1969 and 1971 yielded the following results:
tion Mass of DDT 0. 0290 mg 0. 0340 mg 0. 600 mg ample Size 48 mL Orchard Residential Residential after a storm 1. 79 L 9. 0 mL
Express these concentrations in millimoles per liter
1st attempt
Part 1 (1 point)
Orchard ________mmol/L
Part 2 (1 point)
Residential ______mmolVL
Part 3 (1 point)
Residential after a storm ________mmol/L
Answers
In surface water, DDT will form a bond with water-borne particles, settle, and eventually be deposited in the sediment. DDT is absorbed by fish and other aquatic life.
Is DDT present in the air, water, and soil?DDT and its metabolites also enter the atmosphere through the volatilization of residues in soil and surface water, the majority of which are the result of previous use. The ground will be covered in these substances.
How much time does DDT remain in the soil?DDT remains in soil for a very long time. The majority of the DDT in soil will decompose within two to fifteen years. Microscopic plants and animals, sunlight, and/or evaporation into the atmosphere break down DDT in soil or surface water.
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Question 2 Resilience engineering is concerned with adverse external events that can lead to system failure. Resilient systems are flexible and adaptable so that they can cope with the unexpected. As a software engineer you need to educate system developers of four characteristics as outlined by Hollnagel (2010) that reflect the resilience of an organisation. Make sure to also include an example for each characteristic
Answers
These four characteristics, as outlined by Hollnagel (2010), are critical in developing resilient systems that can cope with unexpected situations and adverse external events. Software engineers must educate system developers about these characteristics to develop more resilient systems.
Resilience engineering is about developing adaptable systems that can handle unexpected situations and are able to cope with the effects of adverse external events that might cause system failure. As a software engineer, you need to inform system developers about the following four characteristics that reflect the resilience of an organization, as described by Hollnagel (2010):Maintainability: This characteristic reflects the degree to which a system can be maintained or repaired after it has been damaged. In other words, it assesses the system's ability to remain in good working order or quickly recover from damage. An example of maintainability would be the ability to quickly repair an engine that has been damaged during an accident.Flexibility: This characteristic reflects the degree to which a system can be modified or adapted to cope with changing circumstances. Flexibility is essential for resilience because it enables a system to respond to new challenges and adapt to different circumstances. An example of flexibility would be the ability to change the specifications of a car to adapt to different driving conditions.Redundancy: This characteristic reflects the degree to which a system can continue to function even if some of its components fail. Redundancy is important because it ensures that the system can continue to operate even if one or more components are not working properly. An example of redundancy would be having a backup generator in case the primary generator fails.Responsiveness: This characteristic reflects the degree to which a system can respond to changing circumstances or threats. Responsiveness is important because it enables a system to quickly and effectively respond to unexpected events. An example of responsiveness would be the ability of an air traffic control system to quickly respond to changing weather conditions to ensure the safety of airplanes in the area.
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Which of the following workers are not likely to be paid during an election?
campaign press secretary
volunteer coordinator
poll worker
director of communications
Answers
Answer:
volunteer coordinator
Explanation:
because they are volunteering for that and in most of the cases they do not expect to be paid
Project stem unit 0 lesson 5
Answers
Answer: Project STEM
Explanation: Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere
Calculate the equivalent capacitance of the three series capacitors in Figure 12-1
Answers
The question is incomplete! Complete question along with answer and step by step explanation is provided below.
Question:
Calculate the equivalent capacitance of the three series capacitors in Figure 12-1
a) 0.01 μF
b) 0.58 μF
c) 0.060 μF
d) 0.8 μF
Answer:
The equivalent capacitance of the three series capacitors in Figure 12-1 is 0.060 μF
Therefore, the correct option is (c)
Explanation:
Please refer to the attached Figure 12-1 where three capacitors are connected in series.
We are asked to find out the equivalent capacitance of this circuit.
Recall that the equivalent capacitance in series is given by
\($ \frac{1}{C_{eq}} = \frac{1}{C_{1}} + \frac{1}{C_{2}} + \frac{1}{C_{3}} $\)
Where C₁, C₂, and C₃ are the individual capacitance connected in series.
C₁ = 0.1 μF
C₂ = 0.22 μF
C₃ = 0.47 μF
So the equivalent capacitance is
\($ \frac{1}{C_{eq}} = \frac{1}{0.1} + \frac{1}{0.22} + \frac{1}{0.47} $\)
\($ \frac{1}{C_{eq}} = \frac{8620}{517} $\)
\($ C_{eq} = \frac{517}{8620} $\)
\($ C_{eq} = 0.0599 $\)
Rounding off yields
\($ C_{eq} = 0.060 \: \mu F $\)
The equivalent capacitance of the three series capacitors in Figure 12-1 is 0.060 μF
Therefore, the correct option is (c)
are trains cool because if they are then my dad didn't beat me
Answers
Answer:
I think trains are pretty awesome. There's a train in japan that levitates slightly and runs on magnetism. Pretty amazing. It's super fast too
_____________ processes are actions that create physical solutions to problems.
a
Production Processes
b
Medical Processes
c
Agricultural Processes
d
Communication Process
Answers
Answer:
yes answer d is correct
Communication Process are actions that create physical solutions to problems. The correct option is d.
What is Communication Process?Human existence and organisational survival both depend on effective communication. It is a process of generating and disseminating thoughts, facts, opinions, and sentiments from one place, individual, or group to another. The Management function of Directing depends on effective communication.
The sending party, message encoding, channel selection, message receipt by the recipient, and message decoding are all aspects of the communication process.
Feedback is when the recipient communicates something back to the original sender. These procedures are actions that result in tangible fixes for issues.
Thus, the correct option is d.
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Your front lawn measures 60 feet by 25 feet. How many ources of herbicide would be needed if the label rate is expressed as 3.75 pounds/acre? ( pound-16 ounces)
Answers
Approximately 0.006500392 ounces of herbicide would be needed to cover your front lawn, given the label rate of 3.75 pounds/acre.
To determine the number of ounces of herbicide needed for your front lawn, we first need to calculate the area of your lawn in acres. Here are the steps to calculate it:
1. Convert the dimensions of your front lawn from feet to acres:
- Length: 60 feet ÷ 1 acre = 0.015625 acres
- Width: 25 feet ÷ 1 acre = 0.00694444 acres
2. Multiply the length and width to obtain the area in acres:
- Area: 0.015625 acres × 0.00694444 acres = 0.000108506 acres
Now that we have the area in acres, we can calculate the amount of herbicide needed based on the label rate provided, which is expressed as 3.75 pounds per acre.
3. Multiply the label rate (3.75 pounds/acre) by the area of your lawn (0.000108506 acres):
- Amount of herbicide needed: 3.75 pounds/acre × 0.000108506 acres = 0.0004062745 pounds
Finally, we need to convert pounds to ounces since the herbicide is typically measured in pounds and ounces.
4. Convert pounds to ounces:
- 1 pound = 16 ounces
- Amount of herbicide needed: 0.0004062745 pounds × 16 ounces/pound = 0.006500392 ounces
It's important to note that the calculated amount is an estimate based on the given dimensions and label rate. For precise application and safety, please refer to the specific instructions provided by the herbicide manufacturer, as different products may have different application rates and guidelines.
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write a program that prompts the user to enter the month and year and displays the number of days in the example, if the user entered month 2 and year 2012, the program should display
Answers
To write a program that prompts the user to enter the month and year and displays the number of days,
Begin by prompting the user to enter the month and year . Read the values entered by the user. Determine if the year is a leap year or not. A leap year is divisible by 4 but not divisible by 100, unless it is also divisible by 400. This is important because February can have 28 or 29 days depending on whether it's a leap year or not. Based on the month entered by the user, calculate the number of days in that month. For example, January, March, May, July,
August, October, and December each have 31 days, while April, June, September, and November each have 30 days. If it's February, check if it's a leap year to determine if it has 28 or 29 days. Display the number of days in the entered month to the user. Here's an example of how the main answer could be implemented in Python:
```python
# Prompt the user to enter the month and year
month = int(input("Enter the month (1-12): "))
year = int(input("Enter the year: "))
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a ball bearing has been selected with the bore size specified in the catalog as 39 mm to 39.02 mm. specify appropriate minimum and maximum shaft diameters to provide a locational interference fit.
Answers
An interference fit is a design principle used in engineering where the dimensions of two parts are chosen so that one part will always be pressed against the other.
A ball bearing has been selected with the bore size specified in the catalog as 39 mm to 39.02 mm. To provide a locational interference fit, the minimum and maximum shaft diameters need to be determined.
The diameter of the ball bearing can vary from 39 mm to 39.02 mm. The minimum diameter of the shaft should be 39.02 mm because the ball bearing has the maximum bore diameter of 39.02 mm. This will create a tight fit between the shaft and the ball bearing. The maximum diameter of the shaft should be 39.04 mm because this is the maximum clearance that can be provided while maintaining a locational interference fit.
Therefore, the minimum and maximum shaft diameters that would provide a locational interference fit with the ball bearing having a bore size specified as 39 mm to 39.02 mm are 39.02 mm and 39.04 mm.
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