+ Vi b) Find the H(jw) for H(jw=w₂) = H(jw = 0.2w₂) = Re ww P14.11_9ed Given: R₂ = 12.5 kn (kilo Ohm) C = 5 nF R = 50 kQ (kilo Ohm) a) Find the cutoff frequency f. for this high-pass filter. fc = Hz For = 0.200. Vo(t) = For = 500 vo(t) = Check C Copyright © 2011 Pearson Education in publishing Pre at angle at angle H(jw = 5w.) = at angle c) If vi(t) = 500 cos(cot) mV (milli V), write the steady-state output voltage vo(t) for For = 0 vo(t) = cos(wt+ *) mV (milli V) www cos(wt + (degrees) cos(wt+ R F) mV (milli V) ) mV (milli V) + Vo
Answers
a) The cutoff frequency \(f_c\) of the filter is given by \(f_c = \frac{1}{2\pi RC}\), where \(R = 50k\Omega\) and \(C = 5nF\). Substituting the values:
\[f_c = \frac{1}{2\pi(50k\Omega \times 5nF)} = 636.62 \text{ Hz}\]
b) To find the transfer function \(H(j\omega)\), we use the formula:
\[H(j\omega) = \frac{V_o(j\omega)}{V_i(j\omega)}\]
where \(V_o(j\omega)\) is the output voltage and \(V_i(j\omega)\) is the input voltage. Given \(V_i(j\omega) = 500\cos(\omega t)\) mV, we can calculate \(V_i(j\omega)\) as follows:
\[
\begin{align*}
V_i(j\omega) &= \frac{500}{2}e^{j\omega t} - \frac{500}{2}e^{-j\omega t} \\
&= 250j\omega \left(\frac{1}{j\omega + \frac{1}{200}j\omega}\right) \\
&= \frac{250j\omega}{j\omega + 0.005j\omega} \\
&= \frac{250j\omega}{1 + 0.005j} \\
&= \frac{250\omega}{1 + 0.005j\omega}
\end{align*}
\]
For \(\omega = w_2\):
\[H(j\omega) = \frac{jw_2R_2C}{1 + jw_2R_2C} = \frac{j(12.5 \times 10^3) \times 5 \times 10^{-9} \times w_2}{1 + j(12.5 \times 10^3) \times 5 \times 10^{-9} \times w_2}\]
For \(\omega = 0.2w_2\):
\[H(j\omega) = \frac{j0.2w_2R_2C}{1 + j0.2w_2R_2C} = \frac{j(0.2 \times 12.5 \times 10^3) \times 5 \times 10^{-9} \times w_2}{1 + j(0.2 \times 12.5 \times 10^3) \times 5 \times 10^{-9} \times w_2}\]
c) If \(v_i(t) = 500\cos(ct)\) mV (millivolts), the steady-state output voltage \(v_o(t)\) for \(\omega = 0\) can be calculated as:
\[v_o(t) = H(j\omega)|_{\omega=0} v_i e^{j\omega t} = H(j0) v_i\]
From part (b), \(H(j\omega) = \frac{j\omega R_2C}{1 + j\omega R_2C}\). Substituting \(\omega = 0\) gives:
\[H(j0) = \frac{j0R_2C}{1 + j0R_2C} = 0\]
Therefore, the steady-state output voltage is 0 mV.
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Related Questions
The volume of a right circular cone of radius r and height h is V = 1 3 πr 2h (a) (i) Find a formula for the instantaneous rate of change of V with respect to r if r changes and h remain constant. (ii) Suppose that h = 2 is fixed but r varies. Find the rate of change of V w. R. To r at the point where r = 4.
Answers
Answer:
(i) \(\frac{2}{3}\)\(\pi\)rh
(ii) \(\frac{16}{3}\)\(\pi\)
Explanation:
Given:
V = \(\frac{1}{3}\)\(\pi\)r²h
Where;
V = volume of a right circular cone.
r = radius of the cone
h = height of the cone.
(i) The rate of change of V with respect to r if r changes and h remains constant is \(\frac{dV}{dr}\), and is given by finding the differentiation of V with respect to r as follow:
\(\frac{dV}{dr}\) = \(\frac{d}{dr}\)[\(\frac{1}{3}\)\(\pi\)r²h]
\(\frac{dV}{dr}\) = \(\frac{2}{3}\)\(\pi\)rh --------------------(i)
(ii)
Given;
h = 2
r = 4
Substitute these values into equation (i) as follows;
\(\frac{dV}{dr}\) = \(\frac{2}{3}\)\(\pi\)(4 x 2)
\(\frac{dV}{dr}\) = \(\frac{2}{3}\)\(\pi\)(8)
\(\frac{dV}{dr}\) = \(\frac{16}{3}\)\(\pi\)
\(\frac{dV}{dr}\) = \(\frac{16}{3}\)\(\pi\)
A right circular cone is one where the axis of cones is the line connecting the vertex to circular base's midway, the volume of right circular cone as follows:
Volume calculation:Formula:
\(V = \frac{1}{3} \pi r^2h\)
Where;
V = right circular cone volume
r = Cone radius.
h = Cone height.
The calculation for part 1:
\(\frac{dV}{dr}\) is indeed the rate of change of V with reference to r when r changes but h remains constant, and it is calculated via calculating the differentiation of V with respect to r as follows:
\(\to \frac{dV}{dr} =\frac{d}{d}r [ \frac{1}{3} \pi r^2h] =\frac{2}{3} \pi r h\)
The calculation for part 2:
When h = 2 and r = 4 then substituting the value into the part 1 equation then:
\(\to \frac{dV}{dr} = \frac{2}{3} \pi (4 \times 2) = \frac{2}{3} \pi (8) = \frac{16}{3} \pi\)
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what is the radial load in bearing b when the motor is stopped with zero tension in the chain? ponder: does it make logical sense that the load in the bearing is higher when the motor is stopped than when it is running and putting tension in the chain? if you have an intuitive understanding of statics then this will be very logical. (hopefully you were not a plug-and-chug engineer when you took your statics class but rather took time to understand the principles intuitively.) incorrect answer: 200
Answers
The radial load in bearing b when the motor is stopped with zero tension in the chain is 300 lb. It is logical that the load in the bearing is higher when the motor is stopped than when it is running and putting tension in the chain due to the principle of statics.
Here's why:When the motor is running, the chain is stretched due to the tension force applied to it. This tension force counteracts the radial load on the bearings, which is why the load is lower in this scenario.On the other hand, when the motor is stopped with zero tension in the chain, the weight of the load is entirely supported by the bearings.
The radial load on the bearing is given by the formula:Radial load on bearing = (Weight of load / Number of bearings) + Axial load due to belt tensionTherefore, when the motor is stopped with zero tension in the chain, the radial load on bearing b can be calculated as follows:Radial load on bearing b = (300 lb / 2) + 0Radial load on bearing b = 150 lbHence, the radial load in bearing b when the motor is stopped with zero tension in the chain is 150 lb.
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identify which country has an absolute advantage in production of cookies and which has the absolute advantage in production of milk
Answers
a) Question Completion:
INPUT HOURS OF LABOR
Country Cookies Milk
Atlantis 2 hours 1 hour
Neverland 4 hours 1 hour
Answer:
1. Atlantis has the absolute advantage in the production of cookies.
2. No country has the absolute advantage in the production of milk.
Explanation:
Absolute advantage refers to superior production capability. It is determined when a country, for example, has the ability to produce a particular good or service at lower cost or more efficiently (i.e. with less resources) than the other country. In the scenario above, Atlantis has an absolute advantage in the production of cookies because it can produce the same quantity of cookies using 2 labor hours that Neverland can produce using 4 labor hours. But for the production of milk, Atlantis and Neverland share the same comparative advantage less they can use less labor hours to produce milk than they can produce cookies.
Determine the reactions at the roller B the rocker C, and where the beam contacts the smooth plane at A. Neglect the thickness of the beam. Suppose that F1 = 450 N and F2 = 720 N (Figure 1)
Answers
To determine the reactions at points A, B, and C, we will first need to analyze the forces and moments acting on the beam. Given that F1 = 450 N and F2 = 720 N, we can use the following steps:
1. Calculate the sum of the vertical forces, which should be equal to zero for static equilibrium:
ΣFy = Ay + By + Cy - F1 - F2 = 0
2. Calculate the sum of the moments about point A, which should also be equal to zero for static equilibrium:
ΣMA = (F1 * d1) + (F2 * d2) - (Cy * d3) = 0
Here, d1, d2, and d3 are the distances from point A to the points where the forces F1, F2, and Cy are applied.
3. Solve for the unknown reactions Ay, By, and Cy using the above equations.
Note that without the distances (d1, d2, and d3) or a diagram (Figure 1), it is not possible to provide specific numerical values for the reactions at A, B, and C.
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18. What are considered to be the two most important types of technical innovations?a. Product and distributionb. Product and servicec. Product and manageriald. Radical reengineering and application designe. Product and process
Answers
Process and product. Product innovation is the creation of new products or the enhancement of existing products in terms of its usefulness, quality, performance, design, or features.
What do process and product innovation mean?Product innovation can take the form of the creation and introduction of a completely new product or the enhancement of an already existing one. On the other hand, process innovation entails implementing a new or improved manufacturing or delivery technique.
Process innovation : What is it?A new or significantly enhanced method of carrying out a task in a corporation that often results in higher output levels and lower costs is known as a "process innovation."
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A spherical gas container made of steel has a 5-m outer diameter
and a wall thickness of 6 mm. Knowing that the internal pressure
is 350 kPa, determine the maximum normal stress and the maximum
shearing stress in the container. show all steps.
Answers
The calculated values are 62.1 Ksi is the maximum normal stress.
Max. Shear stress is 31.05 ksi.
Assuming inner vessel pressure is 60 psi
t=0.375 in, which is the thickness of the vessel's wall
d0/2 -t where r = inner radius
13 x 12 Equals 156 inches, or d0=13 feet in inches.
=78 - 0.375
=77.625 in
The formula for calculating the maximum normal stress in a spherical container is
σ=pr/2t
= 60 x 77.625/ 2 x0.375
100 / 6210 psi = 62.1 Ksi
Shear tension at its maximum, max = max /2
62.1 Ksi/2
=31.05ksi
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Try to
make the decision of selecting any car in the world with
AHP
method
Answers
The Analytic Hierarchy Process (AHP) can be used to make a decision when selecting a car by considering various criteria and alternatives. AHP provides a structured approach for evaluating and prioritizing different factors.
The AHP method involves breaking down the decision problem into a hierarchy of criteria and sub-criteria. The decision-maker assigns weights to each criterion based on their relative importance. Then, the alternatives (different car options) are evaluated against each criterion, and pairwise comparisons are made to determine their relative performance. These comparisons are converted into numerical values using a scale, such as the Saaty scale, to establish the preference of one alternative over another.
By applying mathematical calculations and aggregating the preferences, the AHP method generates a final ranking of the car alternatives based on their overall performance across the criteria. This enables the decision-maker to select the car that aligns most closely with their preferences and satisfies the desired criteria, considering factors such as price, fuel efficiency, safety features, comfort, reliability, and others.
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on what object around a house would you find a "punt"?
Answers
A punt is typically found on a river or body of water, not on an object around a house.
Can you identify the location where a "punt" is commonly found in a residential setting?A "punt" is commonly found on a boat and is used for propulsion in shallow water. It is a long pole that is pushed against the river or lakebed to move the boat forward. Punting is a traditional method of navigation, particularly in areas with shallow water or dense vegetation. The punt is usually made of wood and can be found on the stern or bow of the boat, depending on the design.
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The benzoyl peroxide initiated polymerization of a monomer follows the simplest kinetic scheme, that is, Rp = kp[M]( f kd[I]/kt ) 1/2 with all rate constants and f being independent of conversion. For a polymerization system with [M]O = 2 M and [I]O = 10-2 molar, the limiting conversion p∞ is 10%. To increase p∞ to 20%:
Answers
Ue Finite difference method, and etimate the conolidation ettlement. Conider that
the applied load i contant throughout the conolidation time. To how your
numerical reult you can aume boundary condition, thickne of conolidating
layer
Answers
Partial differential equations can be roughly solved using the finite difference method (FDM). It has been applied to a variety of issues. These include time independent and dependent, linear and non-linear issues.
What do the finite element method's boundary conditions entail?The resolution of a boundary value problem requires the presence of boundary conditions (b.c.). The definition of a boundary value problem is a differential equation (or system of differential equations) that must be solved in a domain where the boundary conditions are known.
What three boundary conditions are there?Boundary conditions that have a fixed concentration, a fixed dispersive flux, and a Cauchy boundary are the most typical types (fixed total mass flux).
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An organization sets its standards for quality according to the best product it can produce.
True
False
Answers
Answer:
True!! took the test
Explanation:
Two children want to balance horizontally on a seesaw. The first child is sitting one meter to the left of the pivot point located at the center of mass of the seesaw. The second child has one-half of the mass of the first child. Where should the second child sit to balance the seesaw?
a.1 m to the right of the pivot
b. 0.5 m to the right of the pivot
c. 4 m to the right of the pivot
d. 2 m to the right of the pivot
Answers
The seesaw can be balanced by ensuring that the torque due to the weight of each child acting on the seesaw is equal. Torque is defined as force multiplied by the distance from the pivot point.
The center of mass of an object is the point at which its weight can be considered to act. In this case, the pivot point is located at the center of mass of the seesaw, which means that the weight of the seesaw can be considered to act at that point. Let's calculate the torque due to the weight of each child. The first child, who is sitting one meter to the left of the pivot point, exerts a torque of (mass of first child x g x 1 m), where g is the acceleration due to gravity. The second child, who has half the mass of the first child, should therefore sit at a distance that produces the same torque. Let's call this distance x. The torque due to the weight of the second child is (0.5 x mass of first child x g x x). In order to balance the seesaw, this torque should be equal to the torque due to the weight of the first child, which is (mass of first child x g x 1 m). Setting these two torques equal, we get:
0.5 x mass of first child x g x x = mass of first child x g x 1 m
Simplifying, we get:
x = 2 m
Therefore, the second child should sit 2 m to the right of the pivot point to balance the seesaw. The answer is d.
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Macon Controls produces three different types of control units used to protect industrial equipment from overheating. Each of these units must be processed by a machine that Macon considers to be their process bottleneck. The plant operates on two 8-hour shifts, 5 days per week, 52 weeks per year. The table below provides the time standards at the bottleneck, lot sizes, and demand forecasts for the three units. Because of demand uncertainties, the operations manager obtained three demand forecasts (pessimistic, expected, and optimistic). The manager believes that a
30
percent capacity cushion is best.
LOADING...
Time Standard
Demand Forecast
Component
Processing
(hr/unit)
Setup
(hr/lot)
Lot Size
(units/lot)
Pessimistic
Expected
Optimistic
A
0.04
1.0
60
15,000
16,000
27,000
B
0.30
4.7
75
10,000
12,000
18,000
C
0.05
8.7
100
16,000
24,000
35,000
a. How many machines are required to meet minimum (Pessimistic) demand, expected demand, and maximum (Optimistic) demand? (Enter your responses rounded up to the next whole number.)
b. How many machines are required if the operations manager decides to double lot sizes?
c. If the operations manager has three machines and believes that the plant can reduce setup time by 20 percent through process improvement initiatives, does that plant have adequate capacity to meet all demand scenarios without increasing lot sizes?
Answers
To meet the demand for component A without increasing lot sizes, 192.86 machines are required, exceeding the available 3 machines.
a. Calculation of machines required for minimum (Pessimistic) demand:
For component A, Processing (hr/unit) = 0.04
Lot Size (units/lot) = 60
Total demand required for pessimistic forecast = 15,000 machines
For pessimistic forecast, the processing time required will be: 15,000 × 0.04 = 600 hours
Setup (hr/lot) = 1.0
For 30% capacity cushion, the total operating hours will be: (600 / (1 - 0.3)) = 857.1428571428571
For expected forecast, the processing time required will be: 16,000 × 0.04 = 640 hours
For 30% capacity cushion, the total operating hours will be: (640 / (1 - 0.3)) = 914.2857142857142
For optimistic forecast, the processing time required will be: 27,000 × 0.04 = 1080 hours
For 30% capacity cushion, the total operating hours will be: (1080 / (1 - 0.3)) = 1542.857142857143
Therefore, the machines required will be:
107.14 machines for pessimistic forecast
114.29 machines for expected forecast
192.86 machines for optimistic forecast
b. Calculation of machines required if the operations manager decides to double lot sizes:
Pessimistic forecast: 120 units/lot
Expected forecast: 150 units/lot
Optimistic forecast: 200 units/lot
The calculation of the total operating hours and machines required will be the same as in part a, with the respective lot sizes.
c. Calculation of the number of machines required with 20% reduced setup time:
New setup time for component A: 0.8 hours/lot
The calculation of the new processing hours and machines required will be the same as in part a, with the reduced setup time.
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note that tje dimensions are shown with respect to horizontal and vertical tangent lines the circle. y r = 5 in С 10 in 6 in 1 1 X (10 in.
Answers
The main answer is: The given information does not provide enough context to determine the specific question being asked.
What can be inferred from the given dimensions and tangent lines of the circle?Based on the given information, it is unclear what specific question is being asked. Without additional context or clarification, it is not possible to determine the relationship between the dimensions, tangent lines, and the circle. It is essential to provide more information or specify the desired outcome in order to provide a meaningful answer.
Understanding the relationship between dimensions, tangent lines, and circles can be explored through various geometric concepts and principles. Exploring topics such as circle properties, tangent lines, and their intersections can shed light on the connections between these elements.
By delving into the principles of geometry, one can gain a deeper understanding of how different geometric elements interact and influence one another.
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300 ps 20ps
=> [Comb. Logic] => [Reg]
What is Clock?
Answers
We have a clock frequency of 300 Picoseconds (ps), which indicates that each clock cycle takes 300ps to complete. On the other hand, the given clock period of 20 picoseconds (ps) means that it takes 20ps for the clock signal to transition from high to low and back to high.
A clock with a frequency of 300ps and a period of 20ps. A clock is an essential component in digital circuits and systems, responsible for synchronizing the operations of the components within the system.
In the context of digital circuits, a clock signal is a waveform that oscillates between high and low voltage levels at a specific frequency, regulating the timing of operations in digital systems. The frequency (measured in Hertz or its multiples, like MHz or GHz) of the clock determines how many cycles occur per second. The period (measured in seconds or its sub-multiples like ns or ps) refers to the duration of one complete clock cycle, from high to low and back to high.
In this case, we have a clock frequency of 300 picoseconds (ps), which indicates that each clock cycle takes 300ps to complete. On the other hand, the given clock period of 20 picoseconds (ps) means that it takes 20ps for the clock signal to transition from high to low and back to high.
To calculate the clock frequency in Hertz (Hz), you can use the following formula:
Frequency (Hz) = 1 / Period (s)
Since the period is given in picoseconds (ps), we need to convert it to seconds (s) by dividing by 10^12:
Period (s) = 20ps / 10^12 = 20 x 10^(-12) s
Now, we can calculate the clock frequency:
Frequency (Hz) = 1 / (20 x 10^(-12) s) = 50 x 10^9 Hz = 50 GHz
So, the clock in this scenario operates at a frequency of 50 GHz, allowing digital components to execute tasks at a high speed, following the clock's rhythm.
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How would you choose a masons hammer?
Answers
Which of the following are examples of irreversibilities that are often present in actual systems. Select all that apply. Friction Heat transfer Elevation change Mixing of two fluids Boundary work Temperature changes
Answers
In thermodynamics, the concept of irreversibility refers to the loss of energy that cannot be recovered by any process. Irreversibilities occur in actual systems due to the presence of various factors that cause energy losses.
Some of the examples of irreversibilities that are often present in actual systems are friction, heat transfer, elevation change, mixing of two fluids, boundary work, and temperature changes.Friction is a common example of irreversibility that occurs in actual systems. It results in the loss of energy due to the conversion of kinetic energy into thermal energy. Heat transfer is another example of irreversibility that occurs due to the temperature difference between two bodies. Elevation change is also an example of irreversibility that occurs due to the gravitational potential energy of the system.
Mixing of two fluids is another example of irreversibility that occurs in actual systems. It results in the loss of energy due to the formation of entropy. Boundary work is also an example of irreversibility that occurs due to the change in volume or pressure of the system. Temperature changes are also an example of irreversibility that occurs due to the heat transfer from one body to another.Therefore, all of the above mentioned are examples of irreversibilities that are often present in actual systems. These factors cause energy losses that cannot be recovered, resulting in the inefficiency of the system. It is important to minimize these irreversibilities to increase the efficiency of the system.
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PLLLLLSSSSSSS HELPPPPPPPP!
Answers
Answer:
i'll help you but there is no question to answer??
. Bơm kiểu piston tác dụng đơn có áp suất p=0,64 Mpa và lưu lượng Q=3,5 l/s. Xác định tốc độ quay của trục bơm và công suất của bơm nếu biết đường kính piston D=150 mm; bán kính tay quay R=60 mm; hiệu suất thể tích của bơm là 0=0,94; hiệu suất chung của bơm b=0,80.
Answers
Answer:
not understand language
How should you approach the dock when docking your vessel? A. Into the wind or current, whichever is stronger B. With the wind or current, whichever is stronger C. At regular operating speed without slowing down D. Between other vessels in heavy traffic.
Answers
The best way to approach the dock when docking your vessel is A. Into the wind or current, whichever is stronger
What is a Dock?This refers to the term that is used to describe and define the area of water between or close to one or more man-made structures that are used to handle boats, ships, or similar objects
Hence, it can be seen that according to maritime laws, it is expected that when docking a vessel, one should approach into the wind or current, whichever is stronger
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Using a paged memory allocation system with a page size of 2,048 bytes and an identical page frame size, and assuming the incoming data file is 20,992, calculate how many pages will be created by the file. calculate the size of any resulting fragmentation. explain whether this situation will result in internal fragmentation, external fragmentation, or both.
Answers
A process of 72,766 bytes will require 35 pages and an additional 1,086 bytes because a page is 2,048 bytes. It will get 36 frames, which means that 2,048 - 1,086 = 962 bytes will be internally fragmented. A process would require 11 pages + 1 byte in the worst-case scenario.
How is fragmentation size determined?The distance between the farthest two points in a single fragment that has been removed from the clustering results can be used to determine the size of the fragment.
What is the calculation method for file size?The resolution (the picture width times the image height) times the bit depth can be used to calculate file size (the number of bits needed to store colours).
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Argue in support of the Ada 83 designers' decision to allow the imple- mentor to choose between implementing in out mode parameters by copy or by reference. 4. Suppose you wish to write a method that prints a heading on a new out- put page, along with a page number that is 1 in the first activation and that increases by 1 with each subsequent activation. Can this be done without parameters and without reference to nonlocal variables in Java? Can it be done in C
Answers
The Ada 83 designers' decision to allow the imple-mentor to choose between implementing in out mode parameters by copy or by reference is a valuable choice.
which provides significant advantages to the implementor as well as to the code executed.In Out Mode Parameters:In Ada 83, the implementation of in-out parameters could be selected by the implementor, which means that the imple-mentor can choose whether to use the call-by-value technique or the call-by-reference technique.
When calling a subroutine, both in and out parameters are copied to the callee’s frame. The called subprogram might utilize this to make modifications in the copy.
The result must then be copied back to the caller. These copying and copying back steps can be avoided by using reference parameters.
If the in-out parameter is implemented by reference, changes made to the parameter in the callee are automatically reflected in the caller.
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Technician A uses three prong electrical cords when possible.
Technician B uses double insulated electrical tools. Which technician
is correct?
Select one:
A. Technician A only
B. Technician B only
C. Both technicians
D.Neither technician
Answers
Correct me if I’m wrong tnx
You have been allocated a club instance to conduct pic for a customer.what steps do you need to follow before initiating the pic ?
Answers
Explanation:
1. Verify the scope of work: Make sure you understand the scope of work and requirements for the customer's club instance. Confirm with the customer if any specific settings or customizations are required.
2. Schedule the PIC: Coordinate with the customer to schedule a suitable time and date for the PIC. Ensure that all necessary stakeholders are available and informed.
3. Review the customer's club instance: Review the customer's club instance to identify any potential issues or conflicts that need to be addressed during the PIC. Check the instance for any configuration, integration, or data issues.
4. Prepare for the PIC: Prepare a checklist and any necessary tools or documentation for the PIC. Make sure you have access to the customer's club instance, including any necessary login credentials or permissions.
5. Initiate the PIC: Once you have completed the above steps, initiate the PIC by going through the checklist and verifying that the customer's club instance is set up correctly and meets their requirements. Identify any issues or gaps that need to be addressed and work with the customer to resolve them.
6. Follow up: Once the PIC is complete, provide the customer with a report or summary of the findings. Follow up with any necessary actions or next steps, and confirm that the customer is satisfied with the results
what is the purpose of the plastic or rubber insulation around the wire?
Answers
Germanium to which 5 x 1022 Sb atoms per m3have been added is an extrinsic semiconductor at room temperature, and virtually all the Sb atoms may be thought of as being ionized (i.e., one charge carrier exists for each Sb atom).
a) Is this material n-type or p-type?
b) Calculate the electrical conductivity of this material, assuming electron and hole mobilities of 0.1 and 0.05 m2 /V s, respectively.
Answers
a) The material is n-type. b. the electrical conductivity of the material is 8 x 10³ Siemens per meter (S/m).
How to Determine the electrical conductivity of a material?a) The material is n-type because it has an excess of electrons due to the added Sb atoms, which act as donor impurities.
b) To calculate the electrical conductivity (σ), we can use the formula:
σ = q * (n * μn + p * μp)
Where:
q is the charge of an electron\((1.6 * 10^{-19} C)\)
n is the electron concentration (number of electrons per unit volume)
μn is the electron mobility (m²/V s)
p is the hole concentration (number of holes per unit volume)
μp is the hole mobility (m²/V s).
Given that virtually all the Sb atoms are ionized and contribute one charge carrier each, the electron concentration (n) is equal to the concentration of Sb atoms:\(n = 5 * 10^{22} Sb/m^3\)
Since the material is n-type, the hole concentration (p) can be considered negligible.
Plugging the values into the formula:
σ = \((1.6 * 10^{-19} C) * (5 * 10^{22} Sb/m^3) * (0.1 m^2/V s)\)
Let's perform the calculation:
σ =\((1.6 * 10^{-19}) * (5 * 10^{22}) * (0.1)\)
= 8 x 10³ S/m
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Many farms and ranches use electric fences to keep animals from getting into or out of specific pastures. When switched on, an electric current is produced in the fence. When an animal touches the electrified fence, it receives a small shock. What material would be the best choice for making an effective electric fence, and why?
Answers
Answer:
Aluminum
Explanation:
The best material to use when creating an electric fence would be Aluminum. Aluminum wiring is incredibly durable and can be easily obtained. Since aluminum is a non-magnetic metal its conducting capabilities far exceed other metallic options in the market and is also why companies choose aluminum for their high tension cable wiring. Aside from being more expensive than other feasible options its durability and conducting capabilities make it easily the best option.
Answer:
Steel Wires
Explanation:
International house of pancakes
A horizontal force P is applied to a 130 kN box resting on a 33 incline. The line of action of P passes through the center of gravity of the box. The box is 5m wide x 5m tall, and the coefficient of static friction between the box and the surface is u=0.15. Determine the smallest magnitude of the force P that will cause the box to slip or tip first. Specify what will happen first, slipping or tipping.
Answers
Answer:
SECTION LEARNING OBJECTIVES
By the end of this section, you will be able to do the following:
Distinguish between static friction and kinetic friction
Solve problems involving inclined planes
Section Key Terms
kinetic friction static friction
Static Friction and Kinetic Friction
Recall from the previous chapter that friction is a force that opposes motion, and is around us all the time. Friction allows us to move, which you have discovered if you have ever tried to walk on ice.
There are different types of friction—kinetic and static. Kinetic friction acts on an object in motion, while static friction acts on an object or system at rest. The maximum static friction is usually greater than the kinetic friction between the objects.
Imagine, for example, trying to slide a heavy crate across a concrete floor. You may push harder and harder on the crate and not move it at all. This means that the static friction responds to what you do—it increases to be equal to and in the opposite direction of your push. But if you finally push hard enough, the crate seems to slip suddenly and starts to move. Once in motion, it is easier to keep it in motion than it was to get it started because the kinetic friction force is less than the static friction force. If you were to add mass to the crate, (for example, by placing a box on top of it) you would need to push even harder to get it started and also to keep it moving. If, on the other hand, you oiled the concrete you would find it easier to get the crate started and keep it going.
Figure 5.33 shows how friction occurs at the interface between two objects. Magnifying these surfaces shows that they are rough on the microscopic level. So when you push to get an object moving (in this case, a crate), you must raise the object until it can skip along with just the tips of the surface hitting, break off the points, or do both. The harder the surfaces are pushed together (such as if another box is placed on the crate), the more force is needed to move them.
what's the answer???
Answers
Answer:
The best chose will happen to be C
Write a Verilog module that describes 8-bit right shifter register with control signals A(arithmetic), L(logical), CLR(clear) and LD(load). Input signals are CLK, LD and 8-bit input D. Output signal is 8-bit output Q. CLR signal will clear Q. LD signal will load input D to Q. A signal will do arithmetic right shift of Q, while L signal will do logical right shift of Q.