3. A particle P starts from rest at a point O and moves on a straight line with constant acceleration 4 m/s2 for 61 minutes. It then continues its motion with constant velocity for 20 seconds until it decelerates to rest. a) If P takes 5 seconds to decelerate, find the velocity of P when it was travelling at constant velocity b) By way of a velocity-time graph, find: (i) the acceleration of the particle after the motion at constant velocity (ii) the average velocity of the particle, P.
Answers
Given that:A particle P starts from rest at a point O and moves on a straight line with constant acceleration 4 m/s² for 61 minutes. It then continues its motion with constant velocity for 20 seconds until it decelerates to rest.
If P takes 5 seconds to decelerate, then we need to find the velocity of P when it was travelling at constant velocity.a) Velocity of the particle, P when it was traveling at constant velocityGiven that the particle moves with constant acceleration of 4 m/s² for 61 minutes=61*60=3660 secso the final velocity of the particle,\(v= u+atv= 0+4×3660=14640\)m/sAgain the particle moves with constant velocity for 20 secondsTherefore the distance covered by the particle in 20 sec, \(s= v×t= 14640×20=292800\) metersGiven that P takes 5 seconds to decelerate, so it will also take 5 seconds to come to rest.
From the equation of motion\(,v= u+at=>0=v+4×5v=-20 m/s\)Hence the velocity of P when it was traveling at constant velocity is -20 m/sb) The velocity-time graph of the particle is as follows:The acceleration of the particle after the motion at constant velocity:From the graph, the time duration when the particle moves with a constant velocity = 3660+20=3680 secondsFinal velocity of the particle u = -20 m/sInitial velocity of the particle v = 14640 m/sTime taken by the particle to come to rest, t= 5 secondsDeceleration of the particle, \(a=-[v-u]/t = -[14640-(-20)]/5= 2926 m/s²\)Average velocity of the particle, P:From the graph,Total distance covered by the particle in the first 61 minutes, \(s1 = (1/2)×4×(61×60)²= 26265600\) metersTotal distance covered by the particle in the last 5 seconds, s2= (1/2)×2926×5²= 36575 metersTherefore, the total distance covered by the particle, \(S= s1+s2= 26302175\)metersTotal time taken by the particle to cover the distance, t= 3680 secondsAverage velocity of the particle,\(P= S/t= 26302175/3680= 7150.51 m/s\)Thus, the velocity of P when it was traveling at constant velocity is -20 m/s. The acceleration of the particle after the motion at constant velocity is 2926 m/s² and the average velocity of the particle, P is 7150.51 m/s.
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Related Questions
Three loads are connected in parallel across a single-phase source voltage of 480 V (RMS). Load 1 absorbs 10 kW and 8 kVAR; Load 2 absorbs 5 kVA at 0.9 power factor leading; Load 3 absorbs 12 kW at 0.95 power factor leading. Calculate the equivalent impedance, Z, for the three parallel loads, for two cases: (a) Series combination of R and X, and (b) parallel combination of R and X. Problem
Answers
Answer:
a) ZT = [ 38.786 ∠-4.28° ] ohms
b) ZT = [ 8.673 ∠4.06° ] ohms
Explanation:
Given that;
Voltage V = 480V
three loads of 1) 10Kw, 8 kVAR
2) 5 kVA, 0.9 power factor lagging
3) 12kW, 0.95 pf leading
Now for load1
Active power P = V^2 / R
Resistance R1 = V^2 / P
= (480 * 480) / 10*1000 = 23.04 OHMS
Reactive power Q = 8kVAR
let x be reactance
Q = V^2 / x
8 * 1000 = (480 * 480) / x
x1 = j28.8 ohms (inductive)
Load 2
Active power = kVA * nf = 5 * 9 = 4.5 Kw
Reactive power = sqrt(S^2 - P^2)
= Sqrt (5^2 - 4.5^2)
= 2.179 kVAR
now Resistance R2 = V^2 / P2 = (480 * 480) / 4.5*10^3
= 51.2 ohms
Reactance X2 = V^2 / Q2 = (480 * 480) / 2.178*10^3
X2 = 105.75 ohms
x2 = -j105.75 ohms (capacitive)
Load 3
Active power = 12kW AND PF = 0.95
so
kVA rating = 12/0.95 = 12.63 kVA
reactive power Q3 = sqrt (12.63^2 - 12^2 )
= 3.94 kVAR
Resistance R3 = V^2/P3 = (480*480) / 12*10^3
= 19.2 ohms
Reactance x3 = V2 / Q3 = (480 * 480) / 3.94*10^3
x3 = 58.47 ohms
x3 = -j58.47 ohms (capacitive)
NOW
a)
series combination of R and X
1/ZT = [1/(R1 + jx1)] + [1/(R2-jx2)] + [1/(R3-jx3)]
we substitute
1/ZT = [1/(23.04 + j28.8)] + [1/(51.2 - j105.74)] + [1/(19.2-58.48)]
1/ZT = 0.02571 + j1.92688*10^-3
ZT = 38.67 -j2.897 (total impedance)
so ZT = [ 38.786 ∠-4.28° ] ohms
b)
parallel combination of R AND X
1/ZT = 1/R1 + 1/jx1 + 1/R2 + 1/(-jx2) + 1/R3 + 1/(-jX3)
1/ZT = 1/23.04 + 1/j28.8 + 1/51.2 + 1/(-j105.74) + 1/19.2 + 1/(-58.48)
1/ZT = 0.1150 - j0.008164
ZT = 8.65 +j0.6141
so ZT = [ 8.673 ∠4.06° ] ohms
Question 8 A hotel is trying to gather data on their guests' satisfaction with their stay. Which of the following options would best help the hotel account for potential bias in their data? 1 point Only surveying guests who have booked their stay through a certain third-party website Only surveying guests who have stayed at the hotel during peak season Only surveying guests who have stayed at the hotel for more than 3 nights Surveying guests at random times throughout the year
Answers
Surveying guests at random times throughout the year would best help the hotel account for potential bias in their data. By surveying guests at random times throughout the year, the hotel can ensure that their data is representative of guests who stay at the hotel during different seasons, for different lengths of time, and who book their stay through different channels. This will help to minimize any potential bias that could arise from only surveying certain subsets of guests.
The easiest way for the hotel to control for potential bias in their statistics would be to survey visitors at various periods throughout the year.
Who is Surveying guests?The hotel can make sure that the data in its survey of visitors is representative of those who stay there during various seasons, for various periods of time, and through various booking channels by conducting surveys of guests at random times throughout the year.
By solely surveying specific visitor subsets, any potential bias that might result will be reduced.
The most popular kind of guest satisfaction survey is the post-stay survey, which is given to guests after they have left the property and asks them about various elements of their stay.
Therefore, The easiest way for the hotel to control for potential bias in their statistics would be to survey visitors at various periods throughout the year.
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the switch in the circuit of fig. p8.17 has been in position a for a long time. at t=0 the switch moves instantaneously to position b. find vo(t) for t≥0. How would you use transient analysis in MultiSim and how would you get that graph onto an excel sheet?
Answers
To use transient analysis in MultiSim to find vo(t) for t≥0, Open MultiSim and create a new schematic. Add the components of the circuit of fig. p8.17: a voltage source, a resistor, a capacitor, and a switch.
Set the start time to 0 and the stop time to a value that is long enough to capture the behavior of the circuit after the switch has moved. For example, if the time constant of the circuit is RC, where R is the resistance of the resistor and C is the capacitance of the capacitor, set the stop time to 5RC.
Run the simulation and observe the waveform of vo(t) on the oscilloscope. To get that graph onto an Excel sheet, select "File" > "Export" > "Export Waveform Data" from the menu bar. Choose the waveform you want to export and set the format to "CSV". Open Excel and import the CSV file as a new worksheet.
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WHAT IS A TOROID IN HYDRAULUCS?
Answers
Answer:
A hydraulic actuator comprised of a toroidal piston within a toroidal enclosure, with differential fluid pressure alternatively applied to upper and lower surfaces of the piston to cause a reciprocating motion, and with plural double ended piston rods extending in parallel above and below the piston, and slidably extending in fluid sealed relation through end caps of the toroidal enclosure to distribute the vibrational force produced by the reciprocating piston over plural points of a surface area of the mass to be vibrated, thereby reducing the likelihood of stress, strain, or harmonics in the mass.
Answer:
Expl
A hydraulic actuator comprised of a toroidal piston within a toroidal enclosure, with differential fluid pressure alternatively applied to upper and lower surfaces of the piston to cause a reciprocating motion, and with plural double ended piston rods extending in parallel above and below the piston, and slidably extending in fluid sealed relation through end caps of the toroidal enclosure to distribute the vibrational force produced by the reciprocating piston over plural points of a surface area of the mass to be vibrated, thereby reducing the likelihood of stress, strain, or harmonics in the mass.anation:
If substance A has molecules moving at a high rate and substance B has molecules moving at a low rate, which substance has the lower temperature?
Answers
Answer:
substance B
Explanation:
you are the network administrator for a small consulting firm. the firm has recently rolled out a new intranet site, and you are responsible for configuring the dns.you are able to connect to the intranet site by using the ip address, but you cannot connect by using the hostname.which of the following do you need to configure to access the site with the hostname?
Answers
You need to configure a DNS A record for the intranet site's hostname to map it to the correct IP address.
What is DNS?
DNS, or Domain Name System, is an internet protocol used to translate domain names, such as www.example.com, into IP addresses, such as 192.168.2.1, that computers can understand and use to communicate with each other. DNS acts as a directory service, providing a link between domain names and their associated IP addresses, which are stored and managed in a distributed database system. DNS is essential for the functioning of the internet, allowing users to access websites and services without having to remember their numerical IP addresses. DNS works by querying a distributed network of DNS servers, which maintain a database of IP addresses and their corresponding domain names. When a DNS query is made, the DNS server looks up the requested IP address in its database and returns it to the user. DNS is an important part of the internet infrastructure and is used by many different types of services, such as email, web hosting, and streaming services.
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In this lab, we assumed that the flip-flops did not contribute to the timing constraints of the circuit. Unfortunately, this is not the case. As you saw when you simulated the D flip-flop, the sampling action does not happen instantaneously. In fact, a flip-flop will become unstable if the inputs do not remain stable for a certain amount of time prior to the rising-edge event (setup time) and a certain amount of time after the rising-edge event (hold time). Assume a setup and hold time of 2ns and 1ns, respectively. What would the theoretical maximum clock rate for the synchronous adder be in this scenario
Answers
Integer dataSize is read from input. Then, strings and integers are read and stored into string vector colorList and integer vector quantityList, respectively. Lastly, string colorAsked is read from input.
Find the sum of the elements in quantityList where the corresponding element in colorList is equal to colorAsked.
For each element in colorList that is equal to colorAsked, output "Index " followed by the element's index. End with a newline.
Ex: If the input is:
3
lavender 25 lavender 22 gray 161
lavender
Then the output is:
Index 0
Index 1
Total: 47
#include
#include
using namespace std;
int main() {
int numElements;
string colorAsked;
int sumQuantity;
unsigned int i;
cin >> numElements;
vector colorList(numElements);
vector quantityList(numElements);
for (i = 0; i < colorList.size(); ++i) {
cin >> colorList.at(i);
cin >> quantityList.at(i);
}
cin >> colorAsked;
/*answer here*/
cout << "Total: " << sumQuantity << endl;
return 0;
}
Answers
Where the above condition is given, here's the solution:
#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main() {
int numElements, sumQuantity = 0;
string colorAsked;
unsigned int i;
cin >> numElements;
vector<string> colorList(numElements);
vector<int> quantityList(numElements);
for (i = 0; i < colorList.size(); ++i) {
cin >> colorList.at(i);
cin >> quantityList.at(i);
}
cin >> colorAsked;
for (i = 0; i < colorList.size(); ++i) {
if (colorList.at(i) == colorAsked) {
cout << "Index " << i << endl;
sumQuantity += quantityList.at(i);
}
}
cout << "Total: " << sumQuantity << endl;
return 0;
What is the explanation of the above code?
First, we declare an integer variable sumQuantity to keep track of the sum of quantities of elements in quantityList where the corresponding element in colorList is equal to colorAsked.We read the integer numElements from input.We declare two vectors colorList and quantityList with numElements elements each.We use a loop to read each string and integer from input and store them in colorList and quantityList, respectively.We read the string colorAsked from input.We use another loop to iterate through colorList and check if each element is equal to colorAsked. If it is, we output "Index " followed by the element's index and add the corresponding quantity from quantityList to sumQuantity.Finally, we output the total sum of quantities in sumQuantity.
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19.2 In a certain manual operation, the first work unit required 7.83 min to complete and the learning rate is known to be 84% in the Wright model. Using this learning curve model, determines the average cumulative times to produce (a) the second unit, (b) the 10th unit, and (c) the 100th unit. (d) Find the total cumulative time for the 100 units and the unit time. for the 100th unit.
Answers
Using this learning curve model, the average cumulative times to produce (a) the second unit is 6.54 min (b) the 10th unit is 4.39 min and (c) the 100th unit is 2.46 min (d) Find the total cumulative time for the 100 units and the unit time is 1.84 min.
What is learning curve model?The learning curve theory has proposed that the efficiency of a learner in a task gets improved by the time. The more the learner performs the task, the better is the performance.
a) m =ln (0.84)/ln2 = -0.25154
T2 = 7.83 (2)^(-0.25154) = 7.84 x 0.84 = 6.54 min
b) T10 = 7.83 x (10)^(-0.25154) = 7.84 x 0.5604 = 4.39 min
c) T100 = 7.83 x (100)^(-0.25154) = 7.84 x 0.3140= 2.46 min
Thus, the average cumulative times to produce (a) the second unit is 6.54 min (b) the 10th unit is 4.39 min and (c) the 100th unit is 2.46 min
The total cumulative time for 100th unit is
d) TT100 =7.873 x (100)^(1-0.25154) = 7.84 x 31.40= 245.86 min
TT99 = =7.873 x (99)^(1-0.25154) = 7.84 x 31.164= 244.02 min
T100 = 245.86 -244.02 = 1.84 min
Therefore, the total cumulative time for the 100 units and unit time is 1.84 min
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is a water proof material used around tubs and
showers.
A. Cement board
B. Backing board
C. Hard board
D. Finish board
Answers
Answer:
hard bored
Explanation:
it seems like it could be either but I think hard bored
on which type of roof are firefighters likely to be at risk of becoming trapped in the void space and falling through the original roof below?
Answers
Firefighters are likely to be at risk of becoming trapped in the void space and falling through the original roof if they are working on a type of roof known as a "flat roof."
Flat roofs are typically flat or nearly flat structures that are used on commercial and industrial buildings. They are built with a low slope and often have limited access points, making it difficult for firefighters to escape if they fall into a void space between the roof deck and the insulation layer.
Additionally, flat roofs are often made of lightweight materials such as asphalt or rubber, which can become weak and brittle during a fire, increasing the risk of collapse. To minimize the risk of firefighter injury, it is important to ensure that firefighters are trained and equipped to work safely on flat roofs, and that they have access to appropriate personal protective equipment and rescue equipment.
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is there any error in the following code snippet, which is used for calculating the average score for a student in three subjects?
Answers
No, there does not appear to be any error in the code snippet. It correctly calculates the average score for a student in three subjects. The code correctly uses the mathematical formula for calculating an average (sum of all items divided by the number of items).
What is formula?Formula is a mathematical rule or equation expressed symbolically that describes the relationship between different variables or constants. It is used to calculate the values of unknown quantities from known quantities. For example, the formula for the area of a circle is A=πr2, where A is the area, π is the constant 3.14 and r is the radius. Formulae are used in many different fields, including physics, chemistry, economics, mathematics, and engineering.
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Which alpha-numeric designator, systematically assigned at the time of manufacture, identifies the manufacturer, month, year, location, and batch?
Answers
An alpha-numeric designator which is systematically assigned at the time of manufacture, so as to identify the manufacturer, month, year, location, and batch is referred to as lot number.
What is a product?A product can be defined as any physical object (tangible item) that is typically produced by a manufacturer so as to satisfy and meet the demands, needs or wants of every customer. Also, some examples of a product include the following:
RefrigeratorTelevisionMicrowave ovenPencilSmartphoneComputerPerfumeWhat is lot number?A lot number can be defined as an alpha-numeric designator which is systematically designed and assigned at the time of manufacture, so as to identify the manufacturer, month, year, location, and batch.
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true or false: don't break or crush mercury-containing lamps because mercury powder may be released?
Answers
Answer:
true
Explanation:
don't break or crush mercury-containing lamps because mercury powder may be released?- true
A rain gutter is to be constructed from a metal sheet of width 3m by bending up one-third of the sheet on each side through an angle θ. How should θ be chosen so that the gutter will carry the maximum amount of water?.
Answers
The area of the gutter is therefore equal to the area of the rectangle plus the area of the triangles.
A = rectangle + 2 * triangle
= 10h + 2 * (1/2 hw)
Using trig work out h and w.
h = 10 sin ?
w = 10 cos ?
A = 10h + hw
= 100sin? + 100sin?cos?
Differentiate the expression (either use the product rule for sin? cos?, or write 100sin?cos? as 50sin2? using the double angle formula)
A = 100sin? + 50sin2?
dA/dt = 100cos? + 100cos2?
For A to be a max or min the derivative must equal zero
100cos? + 100cos2? = 0
cos? + cos2? = 0
Use the double angle formula to write cos2? as 2cos^2 ? - 1
cos? + 2cos^2 ? - 1 = 0
2cos^2 ? + cos? - 1 = 0
This quadratic factorizes:
(2cos? - 1)(cos? + 1) = 0
This means that
cos ? = 1/2 or cos ? = 1
giving:
? = pi/3 or ? = pi
Which means that to achieve the maximum area ? should be pi/3 = 60 degrees
You can check that this is the max by substituting in these values of theta and the two end points (theta = 0, theta = pi), and seeing that pi/3 gives the maximum.
The maximum area is therefore
A = 100sin? + 100sin?cos?
= 100sin(pi/3) + 100sin(pi/3)cos(pi/3)
= 100 sqrt(3) / 2 + 100 sqrt(3)/2 * 1/2
= 100 * 3/2 * sqrt(3) / 2
= 3 * 25 * sqrt(3)
= 75 sqrt(3)
= 129.9...
= 130 cm^3
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What is the measurement
Answers
Which of the following data types will be continuous?
- The number of books in the school library
- The amount of snow that fell last night
- The letter grade Tyron received on an English test
- The number of students who like chocolate or strawberry or vanilla ice-cream flavors
Answers
The data type which would be continuous is: B. The amount of snow that fell last night.
What is a continuous data?In Computer technology, a continuous data can be defined as a data set that has infinitely many possible values and those values cannot be counted, which simply means that they are uncountable.
Generally speaking, quantities such as height, volume, speed, distance, weight, density, length, pressure, temperature, and time are generally a continuous data.
In this context, we can reasonably infer and logically deduce that "The amount of snow that fell last night." would be categorized as a continuous data because it can assume any value in an interval.
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where is the buttock line or buttline of an aircraft
Answers
The buttock line, also known as the buttline, of an aircraft refers to an imaginary line that runs along the longitudinal centerline of the fuselage.
The buttock line is an important reference line used in aircraft design and analysis. It represents the symmetry axis of the aircraft and is often used as a baseline for various measurements and calculations. It serves as a common reference point for determining the position of components, such as the wings, empennage, and engines, in relation to the centerline of the aircraft. The buttock line helps ensure that these components are properly aligned and balanced for optimal aerodynamic performance and stability.
In addition to its use in design and analysis, the buttock line is also relevant in aircraft maintenance and inspection. It aids in locating and identifying structural features and access points along the fuselage, facilitating maintenance activities and ensuring compliance with safety regulations.
Overall, the buttock line is a significant reference line in aircraft design, serving as a baseline for various measurements, calculations, and component positioning. It helps ensure proper alignment, balance, and functionality of the aircraft's components, contributing to its overall performance and safety.
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quizzlet in general, the minimum-size aluminum feeder conductors permitted to be installed in parallel is ?
Answers
The minimum size of aluminum feeder conductors permitted to be installed in parallel is #1/0 AWG.
What is an Aluminum Feeder conductor?A feeder conductor is an electrical power cable that carries electricity from a distribution point to the point of use. The current-carrying conductors that come from the distribution point or transformer and feed directly into the facility are known as feeder conductors. Aluminum is a popular choice for wiring as well as electrical conductor applications in the power industry.
The reason for this is because it has some desirable characteristics such as low resistance, low cost, and low weight. Here are the aluminum conductor sizes:#1/0 AWG (minimum size)1/0 AWG2/0 AWG3/0 AWG4/0 AWG. The above-listed wire sizes are commonly used as feeders or sub-feeders, and the smallest allowable wire size for parallel conductors is 1/0 AWG.
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A baker is weighing the dough that will be used to make pastries. The line plot shows the weight of the dough for each pastry.
Answers
Answer:
Total number of pastries that will be made from at least \(3/8\) a pound of dough is \(8.\)
Explanation:
It is given that the line plot shows the weight of the dough for each pastry.
From the given box plot it is clear that,
Number of pastries with weight pound
Number of pastries with weight pound
Number of pastries with weight pound
We know that
We need to find the number of pastries that will be made from at least a pound of dough. It means the number of pastries whose weight is
Number of pastries with weight pound Number of pastries with weight pound
\(N=3+5\)
\(N=8\)
Therefore, the total number of pastries that will be made from at least a pound of dough is
It is the complete question,
A beam having the cross section shown is subjected to a vertical shear V Determine the horizontal line along which the shearing stress is maximum. The maximum shearing stress occurs at the center where t=
Answers
The horizontal line along which the shearing stress is maximum in the given beam cross-section is at the center, where the thickness (t) is maximum.
In a beam subjected to vertical shear, the shearing stress varies along the cross-section. The magnitude of shearing stress depends on the distance from the neutral axis. In this case, the given beam cross-section shows a symmetrical shape with a maximum thickness (t) at the center.
According to shear flow theory, the shearing stress is directly proportional to the shear force and inversely proportional to the moment of inertia of the cross-section. As the shear force acts vertically, it generates shearing stress in the horizontal direction. The maximum shearing stress occurs at the location with the maximum distance from the neutral axis, which is at the center of the cross-section where the thickness (t) is maximum.
Due to the symmetrical nature of the beam cross-section, the shear flow and shearing stress distribution are also symmetrical about the centerline. Therefore, the maximum shearing stress will occur on the horizontal line passing through the center of the cross-section.
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How can you throw a ball as hard as you can and have it come back to you, even if it doesn't
bounce off anything? There is nothing attached to it, and no one else catches or throws it back to
you.
Answers
Answer:
Magic
Explanation:
magic is the answer to everything unexplainable
Another name of virtualization server is:
a) host
b) clone
c) snapshot
d) template
Answers
Answer:
A. Host ( hope it helped )
When AC current passes through a circuit conductor or a connected load, it creates ___ that creates (or induces) a voltage in the circuit that actually opposes the applied voltage
Answers
When AC current passes through a circuit conductor or a connected load, it creates a magnetic field that induces a voltage in the circuit that actually opposes the applied voltage.
What is AC current?AC current, or alternating current, is an electrical current that periodically reverses direction, changing the polarity of the voltage over time. In contrast to direct current (DC), which flows in only one direction, AC current is used to transmit electrical power over long distances and is the type of current that is used in most household and commercial electrical systems.
In an AC circuit, the voltage and current oscillate back and forth, changing polarity at a frequency determined by the power source. In the United States, the standard frequency for AC power is 60 hertz (Hz), meaning that the voltage and current change direction 60 times per second.
AC current is produced by an AC generator or alternator, which converts mechanical energy into electrical energy. The AC power is then transmitted through power lines to homes and businesses, where it can be used to power a wide range of electrical devices.
One of the advantages of AC current is that it can be easily transformed into different voltages using a transformer, which allows power to be transmitted efficiently over long distances. AC power can also be easily converted to DC power using rectifiers, which is necessary for many electronic devices that require a steady flow of current in one direction.
AC current is used in a wide range of applications, including lighting, heating and cooling systems, motors, and electronics. It is also used in scientific research and medical applications, such as in electroconvulsive therapy and in certain types of medical imaging.
This effect is known as "inductive reactance" and it is a type of impedance that is caused by inductors or coils in a circuit.
Inductive reactance occurs because a changing magnetic field induces a voltage across an inductor that is opposite in polarity to the applied voltage. This opposing voltage acts to limit the flow of current in the circuit and causes a phase shift between the applied voltage and the resulting current.
The amount of inductive reactance in a circuit is determined by the inductance of the inductor, the frequency of the AC signal, and the physical characteristics of the circuit. Inductive reactance is measured in units of ohms and is denoted by the symbol Xl.
Inductive reactance is an important consideration in the design and analysis of AC circuits. It can be compensated for by using capacitors in parallel with the inductor to create a resonant circuit, or by adjusting the frequency or characteristics of the circuit to minimize the effect of the inductive reactance.
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.Which of the following is most important for system improvement? Choose the most relevant answer.
a. forecasting
b. collecting and analyzing information
c. focusing on customers
d. caring about employees
Answers
collecting and analyzing information is the most important factor in system improvement so correct answer is B
it comes to system improvement, there are several factors that need to be considered. However, out of the given options, the most important factor is collecting and analyzing information.Collecting and analyzing information is the cornerstone of any successful system improvement initiative. Without accurate and reliable data, it is impossible to identify the areas that need improvement or to measure the effectiveness of any changes that are made.Forecasts are important in helping to plan for the future, but they are based on assumptions and are inherently uncertain. Therefore, forecasting alone cannot be relied upon to drive system improvement efforts.Focusing on customers is important for any business, but it is not the most important factor when it comes to system improvement. While customer feedback is valuable, it should be viewed as one piece of the puzzle and not the sole focus of improvement efforts.Similarly, while caring about employees is important for creating a positive work environment, it is not the most important factor in system improvement. While happy and motivated employees can certainly contribute to improvements, it is ultimately the data and analysis that will drive meaningful changes.
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QUESTION 6
Which of the following is NOT a resume format?
01. Chronological
O2. Portfolio
3. Functional
04. Combination
Answers
Let X and Y be independent Bernoulli variables such that P(X = 1) = p, P(Y = 1) = q for some 0 ≤ p, q ≤ 1. Find P(X ⊕2 Y = 1)
Answers
Answer:
dddddddddddddddddddddddddddddddddddddd
Explanation:
what are the reasons why fine grained of alkali igneous rocks can not be used in cement
Answers
Fine grained of alkali igneous rocks cannot be used in cement because of the volume expansion caused by the Alkali-silica reaction, fine-grained igneous rocks cannot be used as aggregates in cement.
What does fine grained mean in an igneous rock?Extrusive igneous rocks have a fine-grained or aphanitic texture, with grains that are too small to see without a magnifying glass. The fine-grained texture suggests that the rapidly cooling lava did not have enough time to form large crystals. A petrographic microscope can be used to examine these tiny crystals.
The texture of an igneous rock (fine-grained vs coarse-grained) is determined by the rate at which the melt cools: slow cooling produces large crystals, while fast cooling produces small crystals.
The chemical reaction that occurs in both alkali cations and hydroxyl ions in the pore solution of hydrated cement paste and certain reactive silica phases present in concrete aggregates is known as the alkali-silica reaction (ASR).
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QUESTION 1
A 125 mm diameter and 210 mm high clay specimen has a moist mass of 5184g.
When it is dried, the mass becomes 4631 g. Find the degree of saturation in the
specimen,
assuming the specific gravity of the soil grains is 2.70.
(8)
[8 marks]
Answers
Explanation:
To find the degree of saturation of the clay specimen, we need to first calculate its volume and its dry mass.
The volume of the clay specimen can be calculated using its dimensions:
Volume = π/4 x diameter^2 x height
= π/4 x (125 mm)^2 x 210 mm
= 1640625 mm^3
= 1640.625 cm^3
Next, we can calculate the dry mass of the clay specimen:
Dry mass = Moist mass - Water mass
= 5184 g - 4631 g
= 553 g
Consider the following P-V diagram, which shows an isotherm generated using the Van der Waals equation. This isotherm is for a compound with the following Van der Waals parameters: Pam' a = 2.5 mol b = 1.7x10 mal m The temperature of this isotherm is 150 °C. 20 15 10 Pressure (bar) un 1 2 5 6 Vol (L/mol) 7 a. (8 points) Based on the shape of this curve, is the critical temperature of this fluid greater than 150 °C or less than 150 "C? Why? Consider the following P-V diagram, which shows an isotherm generated using the Van der Waals equation. This isotherm is for a compound with the following Van der Waals parameters: Pam a = 2.5 mol b = 1.7x10 - mol The temperature of this isotherm is 150 °C. 20 15 Pressure (bar) 0 -5 1 2. 5 Vol (L/moi ) 6 7 a. 8 points) Based on the shape of this curve, is the critical temperature of this fluid greater than 150 °C or less than 150 °C? Why? b. (12 points) Suppose that you guess that the vapor pressure of this fluid at this temperature is 11 bar. Using the equations for fugacity of a pure fluid obeying Van der Waals' equation, calculate the fugacity of a saturated liquid and saturated vapor at that pressure and the given temperature. Based on your result, is the vapor pressure at this temperature equal to 11 bar? Why or why not? For parts c& d, assume that the vapor pressure of the fluid at 150 °C is 11 bar (regardless of your answer to part b). c. (8 points) What is the compressibility factor (Z) of the fluid at P = 8 bar? d. (12 points) If we assume that liquids are not accurately described by Van der Waals Equation, what is the fugacity of the fluid at 17 bar and 150 °C?
Answers
The critical temperature of this fluid greater than 150 °C. Water boils at a temperature above 100°C at pressures greater than 1 atm because the increased pressure pushes vapor molecules to the surface.
How are temperature and vapors pressure related?The kinetic energy of the liquid increases along with the increase in temperature. And as a result of this rise in kinetic energy, molecules have a greater propensity to escape, which raises vapour pressure. Thus, we can draw the conclusion that temperature and vapour pressure are directly related.
How can temperature be used to calculate vapor pressure?The pressure that is applied to the walls of a sealed container when a chemical inside of it evaporates is known as vapor pressure in chemistry (converts to a gas). The Clausius-Clapeyron equation can be used to determine the vapor pressure at a specific temperature: ln(P1/P2) = (Hvap/R)(1/T2-1/T1).
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