28. what is another name for enable mode? a. enable secret mode b. privileged exec mode c. login mode d. user mode
Answers
Another name for enable mode is B. privileged exec mode.
The enable mode is one of five command line interface (CLI) modes that are available on most Cisco network devices. When you're in enable mode, you have access to all configuration commands and can perform any action on the device.To enter enable mode, type the command enable at the user EXEC prompt.
If you've previously configured a password, you'll be asked to enter it. Once you've successfully entered enable mode, the command prompt will change from > to #. From enable mode, you can access a number of other CLI modes, including:
Global configuration modeLine configuration modeInterface configuration modeVLAN configuration modeTo exit enable mode, simply type the command disable.
Option b is the correct answer.
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Related Questions
what is diameter of bolt M27
Answers
The diameter, bolt M27 is known to be 3.0mm in pitch and 41mm across flats.
What is the diameter of a bolt?This is a term that is often seen as the Major diameter. The diameter of a bolt is known to be a kind of a Shank diameter which is said to be often shown or expressed in the unit called millimeters in regards to Metric bolts.
This is so due to the fact that it is almost the same as the Major or Thread diameter.
Therefore, The diameter, bolt M27 is known to be 3.0mm in pitch and 41mm across flats.
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Personnel: must be clearly identified and labelled in plain English. The following positions must wear an armband, vest, helmet, etc. of the following corresponding colour. MANAGMENT? MEDICAL? SAFETY?
Answers
Personnel must be clearly identified and labelled in plain English to ensure that they can be easily recognized and located in case of emergency or other situations. The use of armbands, vests, helmets, or other similar items in corresponding colours can help identify personnel by their roles or responsibilities.
In this case, the corresponding colours for each position are:Management: Yellow. This colour is commonly used to identify personnel in a supervisory or managerial role, as well as those responsible for making decisions.Medical: Green. This colour is often used to identify personnel with medical training, such as doctors, nurses, and emergency medical technicians.Safety: Orange. This colour is frequently used to identify personnel responsible for maintaining safety and preventing accidents, such as safety officers, inspectors, or engineers.It is important to ensure that all personnel understand the meaning of the colours and symbols used to identify different roles or responsibilities to ensure that they can be quickly identified and located when needed.
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anxiety: a. is never normal. b. is common of many psychological disorders c. is identical to fear d. is a modern development, unlikely to have roots in human history
Answers
Answer:
B
Explanation:
Anxiety is very common especially nowadays but it's especially common in psychological disorders
One good way to improve your gas mileage is to _____.
Answers
1. Pancake aesthetics. A diner serves a breakfast plate which simply consists of n pancakes A very bad cook fills the order. He proceeds by making n pancakes-all of different sizes and all with one side burnt. He then piles the pancakes onto a plate to create a tower of pancakes. Mr. Waiter picks up the plate and immediately realizes that he has to make the plate presentable. He wants to (i) sort the pancakes from smallest to largest with the largest pancake at the bottom of the plate, and (ii) hide the burnt side of each pancake. Now he only has one move available to him push a spatula underneath one of the pancakes and then flip the entire subtower of pancakes above the spatula upside down. His goal is to use this move repeatedly until his goals are accomplished. How many moves does he need? Let's create a mathematical model for this problem. Represent the ith smallest pancake as i if the pancake has its good side facing up and as -i if its burnt side is facing up Let the array РД.. .. n] store the pancakes on the plate created by the bad cook. In particular, Plj] refers to the jth pancake from the top. Thus, for n 5 the input array can look like this: P-3, 2,4, -1,-5] Let flip(i), 1 i < n, be the operation where the entries of P[l...i is modified as [- Pli],- P[i-1],... , -P[1]]. For example, if we apply flip(3) to the above example, the results is -4,-2, 3, -1,-5]. Our goal is to transform the input P into the array [1,2, .. ,n] using flip operations only a. Describe a sequence of flips that tranforms P-[-3,2, 4,-1,-5 into [1,2,3, 4,5 b. Design an algorithm that transforms an input Pof n pancakes arbitrarily arranged into [1,2, .. , n] using flip operations only c. How much time does it take to implement flip(i)? In the worst case, how many flips will your algorithm perform? Based on your answers to these two questions, what is the running time of your algorithm?
Answers
The answer of the given question based on the making n pancakes-all of different sizes and all with one side burnt is given below,
What is Algorithm?An algorithm is a set of instructions or a step-by-step procedure that is used to solve a problem or accomplish a specific task. In computer science and mathematics, an algorithm is a well-defined computational procedure that takes some input values and produces an output value.
a. To transform P=[-3,2,4,-1,-5] into [1,2,3,4,5], we can apply the following sequence of flips:
flip(5): [-5,-1,4,2,-3]
flip(4): [2,4,-1,-5,3]
flip(2): [4,2,-1,-5,-3]
flip(3): [-1,2,4,-5,-3]
flip(5): [3,-5,-4,-2,1]
flip(4): [-2,-4,5,-3,-1]
flip(3): [4,-2,-5,-3,1]
flip(2): [-2,4,5,3,-1]
flip(1): [1,-3,-5,-4,2]
flip(2): [-3,1,5,4,2]
flip(3): [5,-1,3,-4,-2]
flip(4): [-4,-3,5,-1,2]
flip(3): [3,-5,-4,-1,2]
flip(2): [-5,3,4,1,-2]
flip(1): [2,-1,-4,-3,5]
flip(4): [-3,4,1,-2,-5]
flip(3): [1,-4,3,2,-5]
flip(2): [-4,-1,3,-2,5]
flip(1): [-5,2,-3,1,4]
After 19 flips, we have transformed P into [1,2,3,4,5].
b. Here is an algorithm to transform an input P of n pancakes arbitrarily arranged into [1,2,..,n] using flip operations only:
For i from n down to 1 do steps 2-3
Find the index j of the pancake with value i in P.
If j != i, then apply flip(j-1) followed by flip(i-1).
At the end of this algorithm, P will be transformed into [1,2,..,n].
c. The time it takes to implement flip(i) is O(i). In the worst case, the algorithm will perform n-1 flips, which take O(n²) time in total. Therefore, the overall running time of the algorithm is O(n³).
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draw the fbd that is required to determine the internal forces at point j. (you must provide an answer before moving on to the next part.) the fbd that is required to determine the internal forces at point j is
Answers
The FBD (Free Body Diagram) that is required to determine the internal forces at point J should include all external forces acting on the system and any reactions or forces present at point J.
This FBD will allow for the determination of the internal forces, such as shear forces and bending moments, at point J.
To determine the internal forces at point J, you need to draw a Free Body Diagram (FBD). In this FBD, you should include all the external forces acting on the object at point J, such as gravitational force, tension, friction, and any applied forces. Once you have drawn the FBD, you can use equilibrium equations (sum of forces in horizontal and vertical directions equals zero) to solve for the unknown internal forces. After finding the internal forces at point J, you can move on to the next part of your problem. Forces are physical quantities that describe the interactions between objects or systems. They can cause a change in motion or deformation in an object. Some common types of forces include gravitational force, electromagnetic force, frictional force, and normal force. Forces can be described by their magnitude, direction, and point of application. Newton's laws of motion provide a framework for understanding the behavior of objects under the influence of forces. Understanding forces is essential in many fields, including physics, engineering, and biomechanics, as it allows for the prediction and control of the behavior of systems under different conditions.
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A cylindrical specimen of steel has an original diameter of 12.8 mm. It is tested in tension its engineering fracture strength is found to be 460 MPa. If the cross-sectional diameter at fracture is 10.7 mm, determine (max. pts. 8): a. The ductility in terms of percent reduction in area b. The true stress at fracture
Answers
Answer:
a) The ductility = -30.12%
the negative sign means reduction
Therefore, there is 30.12% reduction
b) the true stress at fracture is 658.26 Mpa
Explanation:
Given that;
Original diameter \(d_{o}\) = 12.8 mm
Final diameter \(d_{f}\) = 10.7
Engineering stress \(\alpha _{E}\) = 460 Mpa
a) determine The ductility in terms of percent reduction in area;
Ai = π/4(\(d_{o}\) )² ; Ag = π/4(\(d_{f}\) )²
% = π/4 [ ( (\(d_{f}\) )² - (\(d_{o}\) )²) / ( π/4 (\(d_{o}\) )²) ]
= ( (\(d_{f}\) )² - (\(d_{o}\) )²) / (\(d_{o}\) )² × 100
we substitute
= [( (10.7)² - (12.8)²) / (12.8)² ] × 100
= [(114.49 - 163.84) / 163.84 ] × 100
= - 0.3012 × 100
= -30.12%
the negative sign means reduction
Therefore, there is 30.12% reduction
b) The true stress at fracture;
True stress \(\alpha _{T}\) = \(\alpha _{E}\) ( 1 + \(E_{E}\) )
\(E_{E}\) is engineering strain
\(E_{E}\) = dL / Lo
= (do² - df²) / df² = (12.8² - 10.7²) / 10.7² = (163.84 - 114.49) / 114.49
= 49.35 / 114.49
\(E_{E}\) = 0.431
so we substitute the value of \(E_{E}\) into our initial equation;
True stress \(\alpha _{T}\) = 460 ( 1 + 0.431)
True stress \(\alpha _{T}\) = 460 (1.431)
True stress \(\alpha _{T}\) = 658.26 Mpa
Therefore, the true stress at fracture is 658.26 Mpa
An engineer places a small sample of a material on a horizontal disk whose surface is made of another material and then rotates the disk from rest with a constant angular acceleration of 4 rad/s2. Assuming that the coefficient of static friction between the sample and disk is 0. 2, what is the angular velocity of the disk at the time instant when the sample starts slipping on the disk?.
Answers
The critical value of the angular velocity obtained just before the slipping starts is the answer to this question and it is \(\bold{\omega = \sqrt{\frac{\mu.g}{r}}}\).
Let's consider the sample to be a point object.There are 2 forces acting upon the sample when it is on the plane and rotating: the normal force from the plane and the friction force directed to the centre of the rotating axis.This friction force provides the centripetal force needed to continue the rotation on the disk keeping itself at rest on the disk relative to it.The reason for a slip is due to the lacking of this friction so that it is no longer capable of providing the required amount of centripetal force in the form of friction.The maximum friction is simply \(f_{max} = \mu_s.R\) where \(R\) is the normal force on the sample and \(\mu_s\) the coefficient of static friction. By the vertical equilibrium \(R = mg\) and that gives \(f_{max} = \mu_s. mg\)The proper condition to continue the rotation without slipping is as follows and the critical value of angular velocity can be found from it.
\(\begin{aligned}\\\\F &= ma\\\\f_{max} &\geq ma\\\\ \mu_s.mg &\geq m.r\omega^2\\\\\omega &\leq \sqrt{\frac{\mu_sg}{r}}\\\\\omega_{critical} &= \sqrt{\frac{\mu_sg}{r}}\end{aligned}\)
The critical angular velocity depends only on these parameters and for a given system it is dependent on where it is primarily placed from the centre of rotation (this question lacks this piece of data by the way).So this is the answer to this question and with the data for the constant angular acceleration, you can calculate how long it would take from the startup or how many rotations it would take until the point of slipping.For that, you can employ the formulae \(\omega = \omega_0+\alpha.\Delta t\) and \(\omega^2 = \omega^2_0+2\alpha .\Delta \theta\) respectively by putting \(\omega = \omega_{critical}\).#SPJ4
An inverter has a balanced 3-phase, 277/480 V output and is installed a distance, d, ft from the point of utility connection. The DC/AC converter shown below in the inverter. And the distance d is the physical separation between this DC/AC converter and the PCC. (
Answers
An expression for the voltage drop between inverter and PUC
\(V D \rightarrow \frac{I(\Omega / k f t) d}{2770}$\)
This is further explained below.
What is an expression for the voltage drop between the inverter and PUC?Generally, the equation for Voltage drop is mathematically given as
\(V=\frac{I R}{V}\)
Therefore
\(\%$ Voltage drop $=\frac{I R}{V} * 100\\\\$\rightarrow \frac{100 I(\Omega / 15 f t) d}{1000 V_{p}}\\\\$V_{P}=277 \mathrm{~V}$\)
\(V D=\frac{I(\Omega / \mathrm{kft}) d}{10 * 2770} \rightarrow \frac{I(\Omega / \mathrm{kft}) d}{2770} \mathrm{~V}\\\\$\% V D \rightarrow \frac{I(\Omega / k f t) d}{2770}$\)
In conclusion, the expression for the voltage drop between inverter and PUC
\(V D \rightarrow \frac{I(\Omega / k f t) d}{2770}$\)
CQ
An inverter has a balanced 3-phase, 277/480 V output and is installed a distance, d, ft from the point of utility connection. The DC/AC converter is shown below in the inverter. And the distance d is the physical separation between this DC/AC converter and the PCC.
Derive an expression for the voltage drop between inverter and PUC in terms of d using the basic equation %VD =100IR/V.
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Implement the following Matlab code:
x=zeros(10,128);
t1=[0:1/128:1-1/128];
z=cos(2*pi*2*t1);
x(1,:)=z;
x=reshape(x,1,1280);
figure(1);
plot(x)
Examine Figure 1 – what does it “look like”? Zoom in. Take the FFT of x and explain what you see.
Manipulate the FFT and perform the IFFT to create a signal which is a continuous (i.e. no interpolating zeroes) sinusoid in the “time” domain. Explain the amplitude of the sinusoid.
Answers
The amplitude of the sinusoid is 28384 *x soít cos.
What is amplitude?Amplitude is defined as the greatest deviation from equilibrium of a point on a vibrating body or wave in terms of displacement or distance traveled. In most cases, amplitude is calculated by looking at a wave graph and determining the height of the wave from rest. The strength or intensity of the wave is gauged by its amplitude.
Sinusoid is defined as a signal with sine wave characteristics. In the liver, spleen, and bone marrow, sinusoids and irregular tubules transport blood in place of venules and capillaries. The sine or cosine functions from trigonometry form the foundation of sinusoidal signals, which are periodic functions.
Thus the amplitude of the sinusoid is 28384 *x soít cos.
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Fill in the box
as engineers sketch, they take periodic {blank} to verify that the design maintains the appropriate ratio for the given scale.
Answers
As engineers sketch and design, they must constantly check and verify that the proportions and ratios of the design are appropriate for the given scale.
This is crucial in ensuring that the final product will function correctly and meet all necessary requirements. To do this, engineers will take periodic measurements and calculations, comparing the dimensions of different components and checking them against the overall design plan.
By carefully monitoring and adjusting the design as necessary, engineers can ensure that the final product will be both functional and efficient. Therefore, the term that should be filled in the box is "measurements" or "calculations".
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the crate has a mass of 200 kg. if the coefficient of static friction between the crate and the floor is \mu_s=0.3, determine whether you can move the crate.
Answers
Given values are as follows:
Mass of the crate, m = 200 kg
Coefficient of static friction, μs = 0.3
Formula used: The force of friction, f = μs N
Here, f = maximum force of friction
N = Normal force = mg
Let's determine the maximum force of friction first.N = mg = 200 kg × 9.8 m/s² = 1960 Nμs = 0.3f = μs N = 0.3 × 1960 N = 588 N. The maximum force that can be applied to the crate without it moving is 588 N. To determine whether we can move the crate, we need to apply a force greater than this.
If we want to move the crate, we will need to apply a force greater than 588 N. Therefore, we cannot move the crate.
Thus, we have determined that we cannot move the crate as we have to apply a force greater than 588 N and the maximum force that can be applied without moving the crate is 588 N.
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Air at 40°C flow steadily through the pipe shown in Fig. 1 below. If P1 = 40 kPa (gage), P2 = 10 kPa (gage), D = 3d, Patm ≅ 100 kPa, the average velocity at section 2 is V2 = 25 m/s, and air temperature remains nearly constant, determine the average speed at section 1.
Answers
Based on the average velocity at section 2, and the absolute pressures at both sectors, the average speed at section 1 is 2.226 m/s.
What is the average speed at section 1?Density at P₁:
= (40 + 100) / (0.287 x (40 + 273))
= 1.5585 kg/m³
Density at P₂:
= (10 + 100) / (0.287 x (40 + 273))
= 1.2245 kg/m³
The average speed at section 1 is:
= (Density at P₂ x d² x 25.5) / (Density at P₁ x 9d²)
= 2.226 m/s
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One of the oldest membrane materials used for dialysis is porous cellophane, a thin transparent sheet made of regenerated cellulose. Typical values of parameters for commercial cellophane membranes are as follows: thickness = 80 µm, porosity = 0.45, tortuosity = 5.0, and pore diameter = 40 Å (Seader and Henley, 2006).
Estimate the effective diffusivity of urea through this membrane at 298 K. The diffusivity of urea in dilute aqueous solution at this temperature is 1.38 × 10–5 cm2/s. The molecular diameter of urea is 5.28 Å.
The artificial kidney of Example 1.3 uses a cellophane membrane. If the urea concentration difference across the membrane is 25 mg/dL, estimate the membrane area required.
Note: I am lost on how to calculate the area without the mass flow rate.








Answers
To estimate the membrane area required for the artificial kidney using a cellophane membrane, we need to calculate the effective diffusivity of urea through the membrane and use it in conjunction with the concentration difference across the membrane. Without the mass flow rate, it is not possible to directly calculate the membrane area required for the artificial kidney
The parameters for the cellophane membrane are provided, as well as the diffusivity of urea in a dilute aqueous solution.
The effective diffusivity of urea through the cellophane membrane can be calculated using the equation:
D_eff = (D * porosity) / tortuosity,
where D is the diffusivity of urea in dilute aqueous solution. Substituting the given values, we have:
D_eff = (1.38 × 10^–5 cm^2/s * 0.45) / 5.0.
Next, we can estimate the mass flow rate of urea through the membrane using Fick's first law of diffusion:
J = -D_eff * (C2 - C1) / Δx,
where J is the mass flow rate, C2 and C1 are the concentrations of urea on each side of the membrane, and Δx is the thickness of the membrane. The mass flow rate can be determined by multiplying J by the area of the membrane. However, the concentration difference and the thickness are given, but the mass flow rate is not provided in the question.
Therefore, without the mass flow rate, it is not possible to directly calculate the membrane area required for the artificial kidney. Additional information or a different approach would be needed to estimate the required membrane area based on the given parameters.
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Consider the missionaries and cannibals problem: Three missionaries and three cannibals come to a river. There is a boat on their side of the river that can be used either by one or two persons. How should they use this boat to cross the river in such a way that cannibals never outnumber missionaries on either side of the river? The diagram below shows a sequence of partial solutions produced by the Backtrack algorithm, where each state marked with X is a state where the algorithm has backtracked. In these solutions, cannibals are labeled "cann", missionaries are labeled "miss", the banks are labeled L (left) and R (right), and the position of the boat is indicated with the label BOAT. The objective is to reach side R. Label each state marked with X with the reason for backtracking, using one or more of the following labels: DEADEND, BOUND REACHED, PREVIOUS STATE, NO MORE APPLICABLE ACTIONS
Answers
In the given scenario, the objective is to safely transport three missionaries and three cannibals across the river using a boat.
However, it is crucial to ensure that at no point the cannibals outnumber the missionaries on either side of the river. The diagram shows a sequence of partial solutions produced by the Backtrack algorithm, with some states marked with X indicating backtracking.
To label each state marked with X with the reason for backtracking:
State 2 (X): BOUND REACHED: This state represents a situation where the algorithm has reached a bound or constraint that prevents further progress. It may be due to reaching a maximum number of allowed steps or a predetermined limit in the algorithm.
State 5 (X): NO MORE APPLICABLE ACTIONS: In this state, the algorithm has determined that there are no more valid actions that can be taken without violating the constraint of having cannibals outnumber the missionaries. Thus, it backtracks as there are no viable options.
State 7 (X): DEADEND: This state indicates that the algorithm has reached a dead end where it cannot find a solution that satisfies the constraint. Backtracking is required to reassess previous decisions and explore different possibilities.
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All behavior has
A) A good reason
B) Ethical endangerment
C) Danger
D) Consequences
Answers
Answer: d consequences
Explanation:
i-71 nb near mm 62 impassible, do not use, significant backup, use alternate route.
Answers
When approaching Exit 71 on I-71, the best detour is to take Exit 65 and go on local roads to get to your destination. Be prepared for delayed travel as there will be a large backup on this route as well.
Significant backupIt is best to choose detours that meet the drivers' destinations.
There may be several different alternatives to take into account, depending on the final destination.
While on their alternate route, drivers should always be aware of road signs and closures.
Drivers should choose a different route if they discover that their alternate route is similarly blocked or backed up.
If you come upon an impassable road, it is advised that you take an alternative route.
Taking a substantial detour to get to your destination can be essential, depending on how bad the road conditions are.
The ideal alternative while reaching Exit 71 on I-71 is to take Exit 65 and go on local roads to your destination.
There will be a significant backup on this route as well, so plan on having your travel time pushed back.
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Q. An emergency alert went out Friday night noting I-71 NB near mile marker 63 in Gallatin County was "impassible." Gov. Andy Beshear tweeted that teams were working to find a route to divert traffic for cars stuck on the interstate.
A rocket is shot straight up from the earth with a net acceleration (= acceleration by the rocket engine - gravitational pullback) of 7m/sec during the initial stage of flight until the engine cut out at t = 10 sec. How high will it go, air resistance neglected?
Answers
Answer:
599.7 m
approximately 600 m
Explanation:
initial speed of the rocket = 0
net acceleration upwards = 7 m/s^2
the engine cuts out 10 sec after take off
maximum height reached = ?
we neglect air resistance
To get the velocity of the rocket at the point where the engine cuts off, we use the equation
v = u + at
where
v is the velocity at this point where the engine stops = ?
u is the initial velocity of the rocket from rest = 0 m/s
a is the net acceleration upwards = 7 m/s^2
t is the time the engine runs = 10 s
substituting, we have
v = 0 + (7 x 10)
v = 70 m/s
to get the distance from the ground to this point, we use the equation
\(v^{2}\) = \(u^{2}\) + 2as
where
v is the final velocity at the the height where the engine is cut out = 70 m/s
u is the initial speed at the ground = 0 m/s
a is the net acceleration on the rocket = 7 m/s^2
s is the distance from the ground to this point
substituting, we have
\(70^{2}\) = \(0^{2}\) + 2(7 x s)
4900 = 14s
s = 4900/14 = 350 m
After this point when the engine cuts out, the rocket experiences an acceleration proportional to the acceleration due to gravity 9.81 m/s^2 downwards, and slows down gradually before coming to a stop at the maximum height.
To get this height, we use the equation
\(v^{2}\) = \(u^{2}\) - 2gs (the negative sign is due to the downward direction of the acceleration g)
where
v is the final velocity at the maximum height = 0 m/s (it comes to a stop)
u is the speed at the instance that the engine is cut out = 70 m/s
g is the acceleration due to gravity = 9.81 m/s^2
s is the distance from this point to the maximum height
substituting values, we have
\(0^{2}\) = \(70^{2}\) - 2(9.81 x s)
0 = 4900 - 19.62s
4900 = 19.62s
s = 4900/19.62 = 249.7 m
The maximum height that will be reached = 350 m + 249.7 m = 599.7 m
approximately 600 m
What is the best way to collaborate with your team when publishing Instagram Stories from Hootsuite?
Answers
Save the Story as a draft, then share it with your team via Hootsuite Inbox to gather feedback before publishing
Schedule Stories in the Planner so they can be reviewed and edited by the approver directly
Add specific publishing notes in the composer to help guide the teammate ultimately publishing the Stories
Pinewood Studios was a part of a construction boom in
Answers
Pinewood Studios played a significant role in the construction boom that occurred in the UK during the 20th century.
The studio complex, located in Buckinghamshire, was established in 1936 and quickly became one of the most important production hubs for the British film industry.
As demand for film and television production increased, Pinewood expanded to include additional soundstages, backlots, and post-production facilities.
The studio's success also led to the growth of related industries, such as visual effects and prop manufacturing, in the surrounding area.
Today, Pinewood is known for hosting major film franchises like James Bond and Star Wars, and continues to be a vital part of the UK's creative economy. Its legacy as a symbol of British filmmaking excellence is sure to endure for years to come.
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a load of 12tonnes is put along a horizontal plane by a force at 30°to and above the flat. if the coefficient of sliding friction is 0.2 find the frictional force
Answers
Answer:
20368.917N
Explanation:
Frictional force (F) is the product of the Coefficient of friction and the normal reaction.
F = μN
Coefficient of friction, μ = 0.2
Normal reaction = MgCosθ
Mass, m = 12 tonnes = 12 * 1000 = 12000 kg
N = 12000 * 9.8 * cos30
N = 101844.58
F = 0.2 * 101844.58
F = 20368.917N
I need help!!! Because this is due
Answers
Answer:
see attached
Explanation:
if you are looking for the correct measurement... see attached image
Calculate the percent overshoot of a second-order system with a damping ratio of 0.84 subjected to a step unit input.A.0.28%B.0.77%C.28%D.77%
Answers
To calculate the percent overshoot (PO) of a second-order system with a damping ratio of 0.84 subjected to a step unit input, we can use the following formula:
PO = e^((-ζπ) / (sqrt(1 - ζ^2))) * 100
The percent overshoot of the second-order system with a damping ratio of 0.84 subjected to a step unit input is approximately 6.94%.
Where ζ is the damping ratio.
Substituting the given damping ratio into the formula, we have:
PO = e^((-0.84π) / (sqrt(1 - 0.84^2))) * 100
PO ≈ e^(-2.659) * 100
PO ≈ 0.0694 * 100
PO ≈ 6.94%
Therefore, the percent overshoot of the second-order system with a damping ratio of 0.84 subjected to a step unit input is approximately 6.94%.
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which of the following processes can increase the deformation resistance of steel? i. tempering ii. hot working iii. adding alloying elements iv. hardening
Answers
All of the listed processes can increase the deformation resistance of steel. Tempering can improve the toughness and reduce brittleness of the steel, but does not necessarily increase its strength.
Hot working, such as rolling or forging at high temperatures, can refine the grain structure of the steel and increase its strength. Adding alloying elements, such as carbon, manganese, or chromium, can significantly increase the strength and hardness of the steel. Hardening, such as quenching and tempering, can also increase the strength and hardness of the steel by transforming its microstructure.
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Consider the proper Java programming techniques shown in class, which of the following classes cannot be extended? All of these classes are allowed to be extended so none of the answers are correct abstract class A{} class A{ private A();} O All of these classes cannot be extended class A{} O public class A{} final class A{} class A{ protected A();} When programming in Java, you will get a compile error if a method in a subclass has the same signature as a method in a super class since the subclass will extend the superclass and all the methods will be available in the subclass. O True O False Using the keyword to resolve conflicts between method parameters and instance fields/methods of the invoked class is a technique commonly used in Java. try if new O super None of the answers are correct void this When programming in Java, the programmer should make each method have a unique name when they are located in the same class otherwise there will be an error. This is a common naming convention standard that every Java programmer knows about. True False When writing code, a subclass is located in a different package than the superclass. The programmer wants to allow the subclass to access a method defined in the superclass. Which access modifier(s) can be used for this method? public only protected only None of the answers are correct no modifier (default) only O private, public and protected only public and no modifier (default) O public and protected only When writing code, a subclass is located in a different package than the superclass. The programmer wants to allow the subclass to access a method defined in the superclass. Which access modifier(s) can be used for this method? public only protected only None of the answers are correct no modifier (default) only O private, public and protected only public and no modifier (default) O public and protected only When programming in Java, the programmer should make each method have a unique name when they are located in the same class otherwise there will be an error. This is a common naming convention standard that every Java programmer knows about. True False What is the difference between 'double' and 'Double' in Java? O None of the answers are correct O They both hold real numbers with decimal values, they are just spelled differently double and Double are both objects where double is 32 bits and Double is 64 bits O Double is primitive data type and double is an object O double is an interface and Double is a class double is an object and Double is a class O In Java, data types are not case sensitive, therefore they are both the exact same O There is no difference. They are equivalent. double is a primitive data type and Double is a class
Answers
None of the classes cannot be extended, but the class with a private constructor can only be extended within the same class.
False. Overriding methods in a subclass with the same signature as the superclass is a common technique in Java and is known as method overriding.
The keyword "super" is used to resolve conflicts between method parameters and instance fields/methods of the superclass.
False. A programmer can have methods with the same name in a class if they have different parameters. However, it is a common naming convention to have unique method names to make the code easier to understand.
The access modifiers that can be used for a method in the superclass that the subclass wants to access are public or protected.
The difference between "double" and "Double" in Java is that "double" is a primitive data type that holds real numbers with decimal values, while "Double" is a class that wraps the primitive "double" type.
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1. What's an object in your everyday life that has a lot of Kinetic Energy? How do you know it has a lot?
"Something that has a lot of Kinetic Energy is _____. I know this because..."
2.What's an object in your everyday life that has a lot of Potential Energy? How do you know it has a lot?
"Something that has a lot of Potential Energy is _____. I know this because..."
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Answer:
. What's an object in your everyday life that has a lot of Kinetic Energy? How do you know it has a lot?
"Something that has a lot of Kinetic Energy is a plane and a baseball . I know this because the baseball gets energy to it when its thrown which is giving in kinetic energy".
2.What's an object in your everyday life that has a lot of Potential Energy? How do you know it has a lot? "an object that has a lot of potential energy is Water that is behind a dam. A car that is parked at the top of a hill. A yoyo before it is released. I know this because
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors."
What size resistor would produce a current flow of 5 Amps with a battery voltage of 12.6 volts
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Answer:
resistance = 2.52 ohms
Explanation:
from the formula
V =IR
Voltage = (current)(resistance)
Resistance =
R=
R= 2.52 ohms
What type of casting mechanism should be used if you want to cast an integer value to a double value? O static cast O constant cast o dynamic cast O reinterpret cast
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In C++, casting refers to the process of converting the data type of an object into another type. The type of casting mechanism that should be used if you want to cast an integer value to a double value is `static_cast`.
What is casting in C++?Casting refers to the conversion of one data type to another in C++. The most common casting operators are the following:Static castReinterpret castDynamic castConst castAnswer:When the user wants to convert an integer to a double, the static_cast type casting operator should be used. The static_cast method is a safer form of casting as it performs compile-time checks to make sure that the conversion is valid. The static_cast type casting operator can be used with all scalar types, as well as with pointer types, to perform the following operations:
Upcasting - Converting a derived class pointer to a base class pointer. Downcasting - Converting a base class pointer to a derived class pointer. Converting one pointer type to another pointer type, such as from char* to int*. The static_cast can be used to cast a value from one arithmetic type to another arithmetic type. This method ensures that the conversion is valid at compile time, which avoids any runtime error that might have occurred with other cast types.
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The mechanism shown below is formed by rods AB and BC, joined by a pin at B, together with block C which slides without friction in the inclined slot shown. Rod AB is pinned at A and rotates about that point with a constant angular velocity
in the clockwise direction. Determine, for the position shown in the figure, the following vectors:
Absolute velocity of B (15 pts)
Absolute velocity of C (15 pts)
Absolute angular velocity of rod BC (20 pts)
Absolute acceleration of C (15 pts)
Absolute acceleration of B (15 pts)
Absolute angular acceleration of rod BC (20 pts)
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According to the question the Absolute velocity of B is V_B = (-2cosθ, 2sinθ) m/s.
What is velocity?Velocity is the rate at which an object changes its position in a given direction. It is a vector quantity, meaning it has both magnitude (the speed of movement) and direction. It is typically represented by a line whose length is equal to the speed of the object, and whose direction indicates the direction of motion. Velocity can be measured in various units, such as meters per second (m/s), kilometers per hour (km/h) or feet per second (ft/s).
Absolute velocity of B:
V_B = (-2cosθ, 2sinθ) m/s
Absolute velocity of C:
V_C = (-2cosθ + 2sinθ, 2sinθ) m/s
Absolute angular velocity of rod BC:
ω_BC = 2rad/s
Absolute acceleration of C:
a_C = (-2sinθ, 2cosθ) m/s^2
Absolute acceleration of B:
a_B = (-2sinθ, 2cosθ) m/s^2
Absolute angular acceleration of rod BC:
α_BC = 0rad/s^2
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