Suppose, you are attempting to carry out a Buffer Overflow Attack by making use of
the following information about a vulnerable function:
The Base address of the buffer is 045
The address of the Current Frame Pointer is 26
To store each pointer or memory address, 8 bytes of memory is required
0-Based indexing is being followed for the buffer
Now, for each of the following scenarios, explain, how you could create exploit(s) to perform your attack with Diagram amd Calculation
The malicious code requires 786 bytes of memory and you want to keep the size of the
buffer to the minimum applicable.
The malicious code requires 786 bytes of memory and you want to place that at the end
of the buffer, the size of which will be exactly 911 bytes.
Answers
The base address of the buffer is 045 and is being indexed using 0-based indexing. So, the last 786/8 = 98 bytes of memory will be used to store the malicious code.
A buffer overflow attack refers to the act of overwriting data within a program or application's allocated memory to execute malicious code. It can be harmful to the computer and the user’s data. If a hacker can inject malicious code into an application that is otherwise considered harmless, he can take over the system and cause damage in various ways, including stealing sensitive information, changing data, and disrupting services.
The act of overwriting memory can also cause programs to crash, leading to other security issues in the system.
Below are the ways to perform a buffer overflow attack:
Scenario 1: The malicious code requires 786 bytes of memory, and you want to keep the size of the buffer to the minimum applicable.To perform a buffer overflow attack with the above scenario, the following steps must be followed:
i. The base address of the buffer is 045 and is being indexed using 0-based indexing. So, to store 786 bytes of malicious code, the number of memory spaces required = 786/8=98
ii. The frame pointer's address is 26, and it should be overwritten to redirect the instruction pointer to the malicious code injected. So the first 26 addresses of the buffer are usually ignored by the code.
iii. The next 98 memory spaces (26-124) would be filled with the malicious code (786 bytes).
iv. Once the malicious code is written in the buffer, a specific number of additional bytes need to be added to overwrite the frame pointer, redirecting the instruction pointer to the beginning of the buffer (026 in this case).
v. The amount of additional memory needed to write over the frame pointer is (126-26=100 bytes).
vi. The buffer size needed to perform this attack is, therefore, the minimum size of (98+100)*8 = 1904 bytes.
Scenario 2: The malicious code requires 786 bytes of memory, and you want to place that at the end of the buffer, the size of which will be exactly 911 bytes.
To perform a buffer overflow attack with the above scenario, the following steps must be followed:
i. The base address of the buffer is 045 and is being indexed using 0-based indexing. So, the last 786/8 = 98 bytes of memory will be used to store the malicious code.
ii. The frame pointer's address is 26, and it should be overwritten to redirect the instruction pointer to the malicious code injected. So the first 26 addresses of the buffer are usually ignored by the code.
iii. The size of the buffer is 911 bytes, and 786 bytes of malicious code is to be injected at the end. So, the additional space required to hold the malicious code is (911-786)=125 bytes.
iv. The next 800 memory spaces (26-825) would be filled with garbage, followed by the malicious code occupying the next 98 memory spaces (826-923).
v. The frame pointer will be overwritten with the value of 826 (923-125), redirecting the instruction pointer to the malicious code (826-923).
vi. The buffer size needed to perform this attack is therefore the exact size of the buffer, i.e., 911 bytes.
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Related Questions
When you park on a hill,the direction your __are pointed determines which direction your car will roll if the breaks fail
Answers
Answer:
Tires or wheels? I think this is the answer. ^_^
Explanation:
A platinum resistance temperature detector has a resistance of 100.00 V at 0°C, 138.50 V at 100°C and 175.83 V at 200°C. What will be the nonlinearity error in °C at 100°C if the detector is assumed to have a linear relationship between 0 and 200°C?
Answers
Answer:
about 1.54 °C
Explanation:
The error will be the difference between the temperature interpreted from the resistance value and the actual temperature. The linear equation used to translate the resistance reading to temperature will be ...
T = (200 -0)/(175.83 -100.00)(R -100.00)
T ≈ 2.637479(R -100)
At the temperature of 100°C, the resistance value of 138.50 will be interpreted to be a temperature of ...
T = 2.637479(138.50 -100) ≈ 101.543°C
This represents an error of 1.543°C relative to the actual temperature.
Two circular rods support the 3800 lb weight of a space heater in a warehouse. each rod has a diameter of 0.375 in and carries 1/2 of the total load. compute the stress in the rods
Answers
The stress in the rods will be 17,140 psi.
The stress in the rods can be calculated by taking the total load of 3800 lbs and dividing it by twice the cross-sectional area of each rod.
With a diameter of 0.375 in, this gives us an area of 0.1103 in2 for each rod. This means that each rod carries 1900 lbs, which produces an axial stress of 17,140 psi.
This is a considerable amount of stress and highlights how important it is to use rods with sufficient strength to safely support such weight while maintaining structural integrity.
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How do birds achieve take-off, gliding, dive, etc.? How do they modify their body shape?
Answers
Design the 4-bit Register with parallel load using J-K Flip-Flops. The design using D Flip-Flops is given below. Exploit the dont-care conditions to simplify the circuit:
Answers
The register with parallel load is a collection of four J-K flip-flops, each of which has an asynchronous reset. The parallel load input is the logic circuit's control input. When the load control input is high, the binary number present at the input lines is latched into the register, and the output lines represent that binary number.
Otherwise, the output lines represent the register's previous contents. The flip-flops are J-K type and positive-edge-triggered, with the inputs J and K linked to produce a toggle flip-flop. In a positive-edge-triggered J-K flip-flop, if the clock is high and the J and K inputs are both 1, the output will switch to its complement state. If the J and K inputs are both 0, nothing happens. If J is 1 and K is 0, the output will be 1. Conversely, if J is 0 and K is 1, the output will be 0. The design using D flip-flops is shown below, and the dont-care conditions are also used to simplify the circuit.
The dont-care conditions are the state of the flip-flop that will never occur. In this particular scenario, using don't care conditions would reduce the circuit's logic gates, and the design would become much simpler. Since this is a 4-bit register, the number of flip-flops needed is four. Each of the four flip-flops would have the same logic circuits and functionality. Hence, the design for a 4-bit register with parallel load using J-K flip-flops would be similar to the design using D flip-flops, with some modifications.
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to cool a given room it is necessary to supply 4 ft3 /s of air through an 8-in.-diameter pipe. approximately how long is the entrance length in this pipe?
Answers
To cool a given room it is necessary to provide 4 ft³/s of air through an 8-inches diameter pipe, for this Entrance length in this pipe = 17.7 ft
Q = 4ft³/s
Diameter = D = 8 inches
Entrance length in this pipe = \(l_{e}\) = ?
By using flow rate formula:
V = Q/A
V= Q/ π/4*D²
= 4ft³/s / π/4 (8/12 ft)²
V= 11.5 ft/s
Thus, with ν = 1.57 x 10⁻⁴ft²/s (value from table)
Re = VD/ν
Re = 11.5 ft/s (8/12 ft)/1.57x10⁻⁴ft²/s
Re = 48,800 > 4000 (based on the criteria)
so, the flow is turbulent
Hence,
\(l_{e} / D\) = \(4.4 R_{e}^{1/6}\)
\(l_{e}\) = 4.4 (48,800)\(^{1/6}\) (8/12)
\(l_{e}\) = 17.7 ft
Entrance Length of an 8-inch diameter pipe = 17.7 ft
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cse/eee 120 capstone design project home security gate controller project summary the goal of this project is to design a gate controller for a home security system. the project is now in the prototype stage, where a simplified version of the home security system will be built. the system operates in the following manner:
Answers
We created a program that alternates between the localization, steering, and navigation modules. The navigation module implements a routing algorithm and selects the global route.
What is program?A program is described as a set of instructions that a computer executes to do a certain activity. Study programs are made to fit your specific learning needs and get you ready for more education, training, or work.
Navigation modules are defined as the interactions that let users move between, inside of, and outside of the various pieces of content in your app. Extra parts are frequently included in the modules to make the sensor easier to use.
Thus, we created a program that alternates between the localization, steering, and navigation modules. The navigation module implements a routing algorithm and selects the global route.
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his exercise examines the single error correcting, double error detecting (SEC/DED) Hamming code. [5] <$5.5> Section 5.5 states that modern server memory modules (DIMMs) employ SEC/DED ECC to protect each 64 bits with 8 parity bits. Compute the cost/performance ratio of this code to the code from Exercise 5.14.1. In this case, cost is the relative number of parity bits needed while performance is the relative number of errors that can be corrected. Which is better?
Answers
Explanation:
Given,In case of Single error correcting and double error detecting (SEC/DED) Hamming code,modern server memory modules (DIMMs) are used for protection of each 64 bits with 8 parity bits.This exercise examines the SEC/DED Hamming code.Now we need to compute the cost/performance ratio of this code to the code from Exercise 5.14.1. In this case, cost is the relative number of parity bits needed while performance is the relative number of errors that can be corrected.Since this is a SEC/DED Hamming code, each 64 bits will be protected with 8 parity bits. So,Total bits per word=n=64Total parity bits=k=8Hence, The cost of the code will be the relative number of parity bits needed, which is the ratio of the number of parity bits to the number of data bits.c = k / n = 8 / 64 = 1 / 8Also, the performance of the code is the relative number of errors that can be corrected. In case of SEC/DED Hamming code, Single bit error can be corrected while double bit error can be detected.p = 1 (Single bit error can be corrected)Therefore, the cost/performance ratio of the code will be:c/p = (1/8) / 1= 1/8Now, we need to compare the cost/performance ratio of this SEC/DED code with the code from Exercise 5.14.1.We know,In case of SEC code, 1 parity bit is used for each 16 data bits.So, for n = 64, number of parity bits needed will be 4. Hence,c = k / n = 4 / 64 = 1 / 16Also, 1-bit error can be corrected. Hence,p = 1Therefore, the cost/performance ratio of SEC code will be:c/p = (1/16) / 1= 1/16Now, to compare, we need to find the better ratio of the two. It is better when the cost is less and the performance is more.Comparing both, we have,c/p(SEC/DED Hamming code) = 1/8c/p(SEC code) = 1/16
Hence, the SEC/DED Hamming code has a better cost/performance ratio.
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look told you i made it a meme
Answers
Answer:
Dam they be thinking we racist
Explanation:
Answer:
XDDDD
Explanation:
XD I LOVE THIS MEME IM SAVING THIS TO MY GALLERY XD
g Calculate a better value for the convection coefficient using resources from heat transfer. Assume forced convection of the air inside the chimney moving at 4 ft/s. Assume convection on the outside of the chimney is due to natural convection. Use the temperature plots or probe of the inside and outside surfaces to calculate the bulk fluid temperature and obtain accurate material properties for air based on these temperatures. Hint: Your new results for h should on the same order of magnitude of the value I provided. If it isn't, check your units. Update to you calculated values for h and resolve your model.
Answers
Answer:results for h should on the same order of magnitude of the value I provided. If it isn't, check your units. Update to you calculated values for h and resolve your model.
Explanation:
Which of the following is a problem that can occur when using an induction coil to harden parts?
O Frictional heat
O Hydrogen embrittlement
Residual stress
Shifting position
Answers
Answer:
I would pick last or first.
I'M SO SO SORRY F IT WRONG!!
A problem that can occur when using an induction coil to harden parts is known as Residual stress. Thus, the correct option for this question is C.
What is an Induction coil?An induction coil may be defined as a kind of electrical transformer that is utilized in order to manufacture high-voltage pulses from a low-voltage direct current (DC) supply. It is also known as a spark coil.
An induction coil is a type of electrical device which is significantly used for generating an intermittent source of high voltage through the direct current. When this approach is applied for hardening parts, a problem may occur which is demonstrating the residual stress on the parts which are usually hardened via induction coil.
Therefore, a problem that can occur when using an induction coil to harden parts is known as Residual stress. Thus, the correct option for this question is C.
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The following is a series of questions pertaining to the NSPE Code of Ethics. Please indicate whether the statement are true or false. These questions are provided by the NSPE.
Engineers in public service as members, advisors or employees of a governmental or quasi-governmental body or department may participate in decisions with respect to services solicited or provided by them or their organizations in private or public engineering practice as long as such decisions do not involve technical engineering matters for which they do not posses professional competence
Answers
Geomorphic
Explanation:
Because it's pretty easy if you think of the right ways of geomorphic ways to process the equation
a commercial refrigerator with r-134a as the working fluid is used to keep the refrigerated space at -35 c by rejecting waste heat to cooling water that enters the condenser at 18 c at a rate of 0.25 kg/s and leaves at 26 c. the refrigerant enters the condenser at 1.2 mpa and 50 c and leaves at the same pressure subcooled by 6 c. if the compressor consumes 3.3 kw of power , determine (a) the mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
Answers
At 1.2mpa pressure and 50c
What is pressure?
By pressing a knife against some fruit, one can see a straightforward illustration of pressure. The surface won't be cut if you press the flat part of the knife against the fruit. The force is dispersed over a wide area (low pressure).
a)Mass flow rate of the refrigerant
Therefore h1= condenser inlet enthalpy =278.28KJ/Kg
saturation temperature at 1.2mpa is 46.29C
Therefore the temperature of the condenser
T2 = 46.29C - 5
T2 = 41.29C
Now,
d)power consumed by compressor W = 3.3KW
Q4 = QL + w = Q4
QL = mR(h1-h2)-W
= 0.0498 x (278.26 - 110.19)-3.3
=5.074KW
Hence refrigerator load is 5.74Kg
(COP)r = 238/53
(Cop) = 4.490
Therefore the above values are the (a) mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
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what could happen if the engine was uncowled during the starting and operating procedures
Answers
If an engine fails during rollout or just before takeoff, immediately shut both throttles and land the aircraft safely. Before reaching a safe single engine speed right away after takeoff, drop your nose to increase velocity.
What is the engine starting procedure?Closing the throttle, turning off the fuel pump, setting the mixture control to idle cutoff, and simply cranking the engine is the most reliable hot start method I've found.
What is the procedure for engine failure?If an engine fails during rollout or just before takeoff, immediately shut both throttles and land the aircraft safely. Before reaching a safe single engine speed right away after takeoff, drop your nose to increase velocity. If you are unable to climb, close both throttles and land straight ahead.
What happens if engine fails during take off?The typical practice for the majority of aircraft would be to abandon takeoff if an engine failed during takeoff. In small aircraft, the pilot should turn the throttles down to idle, activate the speed brakes (if provided), and apply the brakes as needed if the engine fails before VR (Rotation Speed).
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A nuclear power plant has the following name plate information: electric power generation capacity 1.1 GWe, with thermal to electrical conversion efficiency of 33.33%. The reactor core consists of 110 metric tons of 100% pure UO2. The uranium in UO2 is enriched in 235U to 5% and the rest is 238U. Typically, in a nuclear power plant a single fission releases 200 MeV of thermal energy. Note that 1 eV = 1.6 X 10-19 J.
Now answer the following questions:
How much thermal power (GW) is needed to produce the rated electric power? (Points 3) (i) 1.3 (ii) 2.3 (iii) 3.3 (iv) 4.3 (v) 5.3
What is the rate of fission (fissions/sec, approx.) reaction necessary to produce this power? (Points 3) (i) 10^5 (ii) (ii) 10^10 (iii) 10^15 (iv) 10^20 (v) 10^25
How much is the molecular weight of fuel (g/mole, approx..). (Points 3) (i) 32 (ii) 235 (iii) 238 (iv) 270 (v) 300
What is the number of 235U moles (approx.) in the fuel/core. (Points 3) Ans. (i) 10382 (ii) 15382 (iii) 20382 (iv) 25382 (v) 30382
Answers
The thermal power needed to produce the rated electric power of 1.1 GWe is approximately 3.3 GW. To achieve this, a rate of fission reactions of approximately 10^20 fissions per second is required. The molecular weight of the fuel (UO2) is approximately 270 g/mole. The number of 235U moles in the fuel/core is approximately 20382 moles.
Thermal power needed to produce 1.1 GWe electric power:
Electric power generation capacity = 1.1 GWeThermal to electrical conversion efficiency = 33.33%Thermal power needed = Electric power / Efficiency = 1.1 GWe / 0.3333 = 3.3 GWRate of fission reactions necessary to produce this power:
Energy released per fission = 200 MeVConvert energy to Joules: 200 MeV * 1.6 X 10^-19 J/eV = 3.2 X 10^-11 JThermal power needed = Rate of fission * Energy released per fissionRate of fission = Thermal power needed / Energy released per fissionRate of fission ≈ 3.3 GW / 3.2 X 10^-11 J = 1.03125 X 10^19 fissions/sec ≈ 10^20 fissions/secMolecular weight of fuel (UO2):
UO2 consists of uranium (U) and oxygen (O)Atomic mass of U = 235 (enriched) or 238 (non-enriched) g/moleAtomic mass of O = 16 g/moleMolecular weight of UO2 = 235 (or 238) + 2 * 16 = 267 (or 270) g/moleNumber of 235U moles in the fuel/core:
Total uranium in UO2 = 110 metric tons = 110,000,000 gEnrichment of 235U = 5%Mass of 235U = 5% of total uranium = 0.05 * 110,000,000 g = 5,500,000 gMoles of 235U = Mass / Atomic mass = 5,500,000 g / 235 g/mole ≈ 23382 molesAs there is also some 235U in the 238U, we add an approximate 2000 moles (considering the enrichment and molecular weights)Total 235U moles ≈ 23382 moles + 2000 moles ≈ 20382 molesTo produce a rated electric power of 1.1 GWe, the nuclear power plant requires approximately 3.3 GW of thermal power. This necessitates a rate of fission reactions of approximately 10^20 fissions per second. The fuel used in the reactor core is UO2 with a molecular weight of approximately 270 g/mole. Additionally, there are approximately 20382 moles of 235U in the fuel/core.
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Technician A says that a disadvantage of a HADI over a standard EHI, is that the HADI nozzle seat has to seal much higher rail pressures. Technician B says that the high pressure piston pump used with the current DD-Series ACRS is supplied by Bosch. Who is correct
Answers
Both technicians are correct. Technician A accurately identifies a disadvantage of the HADI system, while Technician B correctly states the supplier of the high-pressure pump in the DD-Series ACRS.
Technician A says that a disadvantage of a HADI (Hydraulically Actuated Electronically Controlled Unit Injector) over a standard EHI (Electronically Controlled Unit Injector) is that the HADI nozzle seat has to seal much higher rail pressures. Technician B says that the high-pressure piston pump used with the current DD-Series ACRS (Amplified Common Rail System) is supplied by Bosch.
To determine who is correct, let's analyze the statements:
Technician A is correct. HADI injectors operate at higher rail pressures compared to standard EHI injectors. This is because the HADI system uses a hydraulic amplifier to multiply the pressure delivered by the high-pressure pump, allowing for precise fuel metering and atomization.
Technician B is also correct. The high-pressure piston pump used in the current DD-Series ACRS is indeed supplied by Bosch. Bosch is a renowned manufacturer of fuel injection systems and components.
In conclusion, both technicians are correct. Technician A accurately identifies a disadvantage of the HADI system, while Technician B correctly states the supplier of the high-pressure pump in the DD-Series ACRS.
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what is Auto Cad? and some should help me the drawing of it?
Answers
What is Auto Cad?
Answer : AutoCAD is a commercial computer-aided design (CAD) and drafting software application. Developed and marketed by Autodesk, AutoCAD was first released in December 1982 as a desktop app running on microcomputers with internal graphics controllers.
This is the Answer for your question :3
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I need help for this project is to build a ChatBot with the AWS Lex service. Simple functionalities include your ChatBot is able to recognize a vocal command(query) from users, then retrieve a piece of information from a relational database to answer the query, then speak the query results to the end users. For example, students can query the weather report for a city.
Answers
This project is to build a ChatBot with the AWS Lex service, simple functionalities include your ChatBot is able to recognize a vocal command(query) from users, then retrieve a piece of information from a relational database to answer the query, then speak the query results to the end users can be implemented by using AWS Lambda, Amazon S3 and Amazon DynamoDB for the database.
AWS Lex service offers natural language processing and automatic speech recognition which enables you to design and build conversational chatbots in your application. The chatbots can interact with your users using voice or text messages, to build a chatbot using the AWS Lex service, one needs to have a clear understanding of the requirements for the chatbot. The chatbot can be designed to recognize vocal commands from users and retrieve pieces of information from a relational database to answer the query. Once the query results are retrieved, the chatbot should speak the query results to the end users.
For instance, a student can query the weather report for a specific city. The chatbot should then retrieve this information from the database and speak out the results to the student, this functionality can be implemented by using AWS Lambda, Amazon S3 and Amazon DynamoDB for the database. The chatbot's response should also be customized to cater for different scenarios. In summary, the AWS Lex service provides an effective platform to build a chatbot that can provide real-time information to users using voice or text messages.
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I need some help!
Thanks
Answers
Answer:
a c 1 museum is a patient who by think and pay the the price
What is the benefit of theories? they are easily disproven they are written by famous people they were applying every circumstance they can provide some explanation for signs
Answers
Answer:
A scientific theory is an explanation of an aspect of the natural world and universe that has been repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment. In circumstances not amenable to experimental testing, theories are evaluated through principles of abductive reasoning. Established scientific theories have withstood rigorous scrutiny and embody scientific knowledge.
A scientific theory differs from a scientific fact or scientific law in that a theory explains "why" or "how": a fact is a simple, basic observation, whereas a law is a statement (often a mathematical equation) about a relationship between facts. For example, Newton’s Law of Gravity is a mathematical equation that can be used to predict the attraction between bodies, but it is not a theory to explain how gravity works. Stephen Jay Gould wrote that "...facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are structures of ideas that explain and interpret facts.
mark me as brainlist
superposition theorem
Answers
Answer:
mark me brainliest
Explanation:
Superposition theorem is one of those strokes of genius that takes a complex subject and simplifies it in a way that makes perfect sense. A theorem like Millman’s certainly works well, but it is not quite obvious why it works so well. Superposition, on the other hand, is obvious.
Water at 20oC, with a free-stream velocity of 1.5 m/s, flows over a circular pipe with diameter of 2.0 cm and surface temperature of 80oC. Calculate the average heat transfer coefficient and the heat transfer rate per meter length of pipe.\
Answers
Answer:
Average heat transfer coefficient = 31 kw/m^2 k
Heat transfer rate per meter length of pipe = 116.808 KW
Explanation:
water temperature = 20⁰c,
free-stream velocity = 1.5 m/s
circular pipe diameter = 2.0 cm = 0.02 m
surface temperature = 80⁰c
A) calculate average heat transfer coefficient
we apply the formula below :
m = αAv
A (area) = \(\pi /4 (d)^2\)
m = 10^3 * \(\pi / 4 ( 0.02)^2\) * 1.5
= 10^3 * 0.7857( 0.0004) * 1.5
= 0.4714 kg/s
Average heat transfer coefficient
h = \(\frac{m(cp)}{A}\) , A = \(\pi DL\)
L = 1 m , m = 0.4714 kgs , cp = 4.18
back to equation
h = \(\frac{0.4714*4.18}{\pi * 0.02 }\) = 1.970 / 0.0628 = 31.369 ≈ 31 kw/m^2 k
B) Heat transfer rate per meter length of pipe
Q = ha( ΔT ), a = \(\pi DL\)
= 31 * 0.0628 * ( 80 - 20 )
= 31 * 0.0628 * 60 = 116.808 KW
A gold vault has 3 locks with a key for each lock. Key A is owned by the
manager whilst Key B and C are in the custody of the senior bank teller
and the trainee bank teller respectively. In order to open the vault door at
least two people must insert their keys into the assigned locks at the same
time. The trainee bank teller can only open the vault when the bank
manager is present in the opening.
i) Determine the truth table for such a digital locking system (4 marks)
ii) Derive and minimize the SOP expression for the digital locking system
Answers
Answer:
see the attached truth tableOpens = AB + ACExplanation:
i) In the attached truth table, TRUE means the respective key owner is present and their keys are inserted at the same time. The "Opens" column is TRUE when two owners are present, not including the case where the only two owners present are B and C.
__
ii) The second attachment is a Karnaugh map of the truth table. The circled terms are ...
Opens = AB +AC
What is desktop publishing software
Answers
Desktop publishing (DTP) is the use of personal computers to design books and booklets that are intended to be printed by ink jet or laser printers. The software that supports desktop publishing has a WYSIWYG graphical user interface (GUI) to make the set-up for publishing as easy as possible.
tech a says that black exhaust indicates a very rich-running engine. tech b says that white exhaust can indicate coolant in the exhaust. who is correct?
Answers
Since tech A says that black exhaust indicates a very rich-running engine is false and since tech b says that white exhaust can indicate coolant in the exhaust, Tech B is correct.
What does it mean when your exhaust pipe is black?Black exhaust smoke is known to be one that can show up if the vehicle is said to be burning too much fuel.
Note that this situation could be as a result of a clogged air filter, the malfunctioning of the fuel injection system, a blocked manifold, or other forms of issues.
Therefore, Since tech A says that black exhaust indicates a very rich-running engine is false and since tech b says that white exhaust can indicate coolant in the exhaust, Tech B is correct.
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The power by the dominant group over minority groups takes place through institutions, including mass media and popular culture, that communicate the ruling values and beliefs that are sometimes taken up by members of the minority group is called…
a.hegemony
b.discrimination
c.racism
d.oppression
Answers
The power exerted by the dominant group over minority groups through institutions, such as mass media and popular culture, in order to communicate and reinforce ruling values and beliefs that may be adopted by members of the minority group is referred to as hegemony.
The term "hegemony" best describes the concept described in the question. Hegemony refers to the social, cultural, and ideological influence wielded by the dominant group over subordinate groups within a society. It involves the imposition of dominant norms, values, and beliefs that shape the worldview and behavior of both the dominant and subordinate groups.
In this context, institutions like mass media and popular culture play a significant role in disseminating and reinforcing the ideologies and narratives of the dominant group. By controlling the representation, portrayal, and dissemination of information, the dominant group can shape public opinion and maintain their position of power and control.
However, it is important to note that while hegemony influences the beliefs and behaviors of some members of the minority group, it does not encompass all forms of discrimination, racism, or oppression. These terms represent specific manifestations of power imbalances and discriminatory practices, which can be reinforced by hegemonic systems but are not limited to them.
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Which of the following algorithms has the same best, average, and worst case runtime complexity? A) Quicksort B) Merge sort C) Shell sort D) Insertion sort
Answers
The runtime complexity of insertion sort algorithms is the same in all three case types.
Which sorting algorithms have the best average complexity and the worst case complexity?Since the array is already sorted, the best case time complexity is n. The array's reverse sort is the worst case scenario. Best, average, and worst-case time complexity: n2, which is unaffected by the data distribution. The nlogn algorithm, which is independent of data distribution, provides the best, average, and worst case time complexityes.
Which sorting algorithm is the most difficult in best case time?The best, average, and worst cases of Quicksort's temporal complexity are O(n log n), O(n log n), and O(n log n), respectively. Nonetheless, Quicksort is preferred since it offers the best average performance for the majority of inputs.
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All of these are true about aluminum EXCEPT that it:
A) has a self-healing, corrosion-resistant coating.
B) is resistant to galvanic corrosion.
C) is a nonferrous metal.
D) is easy to be initially formed.
Answers
All of the aforementioned are true characteristics and properties of aluminum except: B. is resistant to galvanic corrosion.
What is aluminum?Aluminum can be defined as a silvery white metal and it is considered to be the most abundant metal found in the Earth's crust. Also, it is represented with the chemical symbol "Al" and it has an atomic number of thirteen (13).
This ultimately implies that, aluminum is found in Group 3 on the periodic table because it has three (3) valence electrons, which are found in the outermost shell of its atomic nucleus.
The characteristics and properties of aluminum.Some of the characteristics and properties of aluminum include the following:
It has a self-healing and corrosion-resistant coating.It is a nonferrous metal.It is easy to be initially manufacture or formed.Read more on aluminum here: https://brainly.com/question/25869623
Determine the minimum required wire radius assuming a factor of safety of 3 and a yield strength of 1500 MPa.
Answers
This question is incomplete, the complete question is;
A large tower is to be supported by a series of steel wires. It is estimated that the load on each wire will be 11,100 N.
Determine the minimum required wire radius assuming a factor of safety of 3 and a yield strength of 1500 MPa.
answer in mm please
Answer:
the minimum required wire radius is 5.3166 mm
Explanation:
Given that;
Load F = 11100N
N = 3
∝y = 1500 MPa
∝workmg = ∝y / N = 1500 / 3 = 500 MPa
now stress of Wire:
∝w = F/A
500 × 10⁶ = 11100 / A
A = 22.2 × 10⁻⁶ m²
so
(π/4)d² = A
(π/4)d² = 22.2 × 10⁻⁶
d² = 2.8265 × 10⁻⁵
d = 5.3165 7 × 10⁻³ m³
now we convert to mm(millimeters)
d = 5.3166 mm
Therefore the minimum required wire radius is 5.3166 mm
Why do you have to know each testing tools?
Answers
Answer:
YAH A BLINK
Explanation:
If u are asking about softwares
then,
Software testing tools are often used to assure firmness, thoroughness and performance in testing software products.
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since every tool is important, it is also important that we know and learn how to use it for the coming of the day so we can fix the things that are broken to us.