Steam enters an adiabatic condenser (heat exchanger) at a mass flow rate of 5.55 kg/s where it condensed to saturated liquid water at P = 20 kPa. The change in enthalpy of the steam is – 2,491 kJ/kg. The steam is cooled by water from a river. Environmental regulations require that the maximum increase in the river water temperature is 10°C.
a) What is the minimum mass flow rate of river water through the condenser to cool the steam? The Cp for water = 4.184 kJ/kg/K.
Answers
Answer:
The minimum mass flow rate will be "330 kg/s".
Explanation:
Given:
For steam,
\(m_{s}=5.55 \ kg/s\)
\(\Delta h=2491 \ kg/kj\)
For water,
\(\Delta T=10^{\circ}C\)
\((Cp)_{w}=4.184 \ kJ/kg^{\circ}C\)
They add energy efficiency as condenser becomes adiabatic, with total mass flow rate of minimal vapor,
⇒ \(m_{s}\times (\Delta h)=M_{w}\times(Cp)_{w}\times \Delta T\)
On putting the estimated values, we get
⇒ \(5.55\times 2491=M_{w}\times 4.184\times 10\\\)
⇒ \(13825.05=M_{w}\times 41.84\)
⇒ \(M_{w}=330 \ kg/s\)
Related Questions
how can banks rain Workforce Members to Recognize Social
Engineering Attacks? (300 words)
Answers
Banks must be proactive in training their staff members on social engineering attacks to protect their customers' sensitive information and minimize financial losses. Regular training, simulated attacks, and clear guidelines can help employees identify and respond to attacks.
Social engineering attacks are a significant security concern for banks. As more customers turn to digital banking, cyber attackers have been targeting banks with a wide range of tactics to gain access to sensitive information or money.Banks have to ensure that their staff members are trained in identifying and mitigating social engineering attacks. Here are some ways that banks can train their workforce members to recognize social engineering attacks:Regular Training: Banks should conduct regular training sessions to educate their employees about social engineering threats, phishing attacks, and other security risks. This training should cover everything from the basics of information security to more advanced topics like cybercrime trends. Banks should also conduct periodic tests to gauge their employees' knowledge and understanding of social engineering attacks. This approach helps ensure that employees are familiar with the latest social engineering tactics and can respond appropriately when they encounter them.Simulated Attacks: Banks should conduct simulated social engineering attacks to help their employees understand what a real attack looks like. These simulations should include phishing emails, phone calls, and other methods that attackers use to gain access to sensitive information. These simulations provide a low-risk environment for employees to learn and practice their responses to social engineering attacks. Banks can also use these simulations to identify areas where their employees need more training or support.Tips and Guidelines: Banks should provide their employees with clear and concise guidelines on how to identify and report social engineering attacks. These guidelines should be easy to understand and should include examples of common social engineering attacks. Banks should also encourage their employees to ask questions and report suspicious activity as soon as they notice it.ConclusionIn conclusion, banks must be proactive in training their staff members on social engineering attacks. Regular training, simulated attacks, and clear guidelines can help employees identify and respond to social engineering attacks. By taking these steps, banks can protect their customers' sensitive information and minimize the risk of financial losses.
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Steering and suspension question
Answers
Answer:
I would say only A
Explanation:
steering dampeners are applied to heavy-duty and off-road vehicles in order to help stabilize and balance out your steering in rough terrain. luxury cars won't have them because, well, they are cars, and cars are not used for off-roading. trucks and SUVs and sometimes vans are though, which makes sense more than just a random luxury car with dampeners just sitting there for no reason at all when heavy-duty vehicles need them more than the car.
Summary of Possible Weather and Associated Aviation Impacts for Geographic/Topographic Categories Common in the Western United States.
Geographic/Topographic Descriptive Summary of Potential Aviation Impacts
Category of a Possible Weather That Could Impact Based on Weather
of Airport Location Aviation Operations
Along the US West coast,
with steep mountains to the east
(An example of this category is
Santa Barbara Airport, located
on the Southern California Coast,
at an elevation of 10 feet).
Within a valley in elevated terrain
surrounded by high mountains
(An example of this category is
Friedman Memorial Airport, located
in Central Idaho, at an elevation of 5300 feet).
In elevated terrain on the leeside of
high mountains
(An example of this category is Northern Colorado
Regional Airport, located in northern Colorado,
at an elevation of 5000 feet, on the leeside
of the Rocky mountains).
Answers
Answer: answer provided in the explanation section.
Explanation:
Weather phenomenons that would impart Aviation Operations in Santa Barbara -
1. Although winters are cold, wet, and partly cloudy here. It is in general favorable for flying. But sometimes strong winds damage this pleasant weather.
2. The Sundowner winds cause rapid warming and a decrease in relative humidity. The wind speed is very high surrounding this area for this type of wind.
3. Cloud is an important factor that affects aviation operations. Starting from April, here the sky is clouded up to November. The sky is overcast (80 to 100 percent cloud cover) or mostly cloudy (60 to 80 percent) 44% on a yearly basis. Thus extra cloud cover can trouble aviation operations.
4. The average hourly wind speed can also be a factor. This also experiences seasonal variations, these variations are studied carefully in the aviation industry. The windier part of the year starts in January and ends in June. In April, the wind speed can reach 9.5 miles per hour.
This and more are some factors to look into when considering wheather conditions that would affect aviation operations.
I hope this was a bit helpful. cheers
Explain the relationship between separation and economic efficiency in mineral processing.
Answers
Answer:
Post navigation. The technical excellence of separation achieved in a mineral concentration process, or any other process where two constituents of any kind are physically separated from each other, is expressed uniquely and quantitatively by the Separation Efficiency: Es = (R – Rg)
Explanation:
hope it helps.
What change occurs in the energy grade line (EGL) when an ideal fluid is replaced with water in a pipe system? A. It acquires a downward slope. B. It acquires an upward slope. C. It becomes coincident with the hydraulic grade line (HGL). D. It does not change.
Answers
When water is used instead of an ideal fluid, the HGL may change due to the different properties of water, but the EGL will remain the same. The correct answer C.
When an ideal fluid is replaced with water in a pipe system, the energy grade line (EGL) does not change.
The EGL represents the total energy of the fluid, which includes both the pressure energy and the kinetic energy, and it is independent of the fluid properties. The hydraulic grade line (HGL), on the other hand, represents the pressure energy of the fluid, and it is affected by the fluid properties such as density and viscosity. The correct answer C.
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why do iot devices pose a greater security risk than other computing devices on a network?
Answers
IoT devices pose a greater security risk than other computing devices on a network due to their lack of security features, their connection to vulnerable networks, their large numbers, and the sensitive data they collect and transmit.
IoT devices, or Internet of Things devices, pose a greater security risk than other computing devices on a network for several reasons. Firstly, IoT devices are often designed with a focus on functionality and affordability, rather than security. As a result, they may lack basic security features such as encryption and user authentication. Additionally, IoT devices often have weak default passwords that are easy for hackers to guess or crack. This makes it easy for hackers to gain access to the device and exploit vulnerabilities.
Secondly, IoT devices are often connected to a network that is already vulnerable. For example, a compromised laptop or mobile device can serve as a gateway for hackers to access the entire network, including IoT devices. Once inside the network, hackers can use IoT devices as a launching pad for further attacks.
Thirdly, the sheer number of IoT devices on a network makes it difficult for network administrators to monitor and control them all. This makes it easier for hackers to go undetected and carry out attacks without being noticed.
Finally, IoT devices often collect and transmit sensitive data such as location information, health data, and personal preferences. If this data falls into the wrong hands, it can be used for malicious purposes such as identity theft, blackmail, or even physical harm. It is important for network administrators and users to take steps to secure their IoT devices and networks in order to prevent attacks and protect sensitive data.
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In a gas-turbine cycle, fuel is combusted with air in a constant-pressure combustion chamber at a pressure of 0.8 MPa. The combustion process can simplified by (1) assuming that it could be represented as a heat-addition process and (2) neglecting the mass flowrate of the fuel (i.e. assuming that only air goes in and out of the combustion chamber).
Answers
Gas turbine cycle is a thermodynamic cycle used in gas turbine engines and jet engines. In a gas-turbine cycle, fuel is combusted with air in a constant-pressure combustion chamber at a pressure of 0.8 MPa. The combustion process can simplified by (1) assuming.
that it could be represented as a heat-addition process and (2) neglecting the mass flowrate of the fuel (i.e. assuming that only air goes in and out of the combustion chamber).In a gas turbine engine, the basic operation principle is to suck in air from the surrounding and compress it.
The compressed air is then heated by fuel combustion in a combustion chamber, and the resulting gas expands, driving a turbine that generates power. This turbine is connected to a compressor, and the air compression cycle starts all over again.
The resulting gas also passes through a nozzle, which generates additional thrust to propel the aircraft. In other words, a gas turbine engine is essentially a complex air pump.
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What type of disinfectant would be used on semicritical items, such as a flexible fiberoptic sigmoidoscope?
Answers
2% glutaraldehyde is a disinfectant that is often used. preferred agent for semi-critical objects that can't be exposed to such adaptable fiberoptic sigmoidoscopy.
The small incision medical procedure known as a sigmoidoscopy examines the large intestine from the rectum to the sigmoid colon, which is the closest portion of the colon. There are two different forms of sigmoidoscopy: rigid sigmoidoscopy employs a rigid equipment while flexible sigmoidoscopy uses a flexible endoscope. The chosen procedure is usually flexible sigmoidoscopy. Although they are not the same, a colonoscopy and a sigmoidoscopy are related procedures. While a colonoscopy looks at the entire big bowel, a sigmoidoscopy just looks at the sigmoid, which is the farthest portion of the colon. The doctor can view the interior of the large intestine from the rectum to the sigmoid, or left side of the colon, using flexible sigmoidoscopy. The process can be used by doctors to identify the source of constipation, abdominal pain, or diarrhea. In the descending colon and rectum, they also utilize it to check for benign and malignant polyps as well as early indications of cancer. The doctor can see intestinal bleeding, inflammation, abnormal growths, and ulcers in the descending colon and rectum during flexible sigmoidoscopy.
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When using the superposition theorem, each ideal voltage and current source must be replaced by an open circuit.
true
false
Answers
What are the corresponding minimum and maximum velocities that the rocket experiences? Express your answer as two numbers separated by a comma
Answers
The corresponding minimum and maximum velocities that the rocket experiences are 23.195m/s and 37.249m/s.
How to calculate the value?The minimum value will be:
V(t) = 3t³ + (-24)t² + 54t
V(3.721) = 3(3.721)³ - 24(3.721)² + 54(3.721)
= 23.195m/s.
The maximum value will be:
V(.1613) = 3(1.613)³ - 24(1.613)² + 54(1.613)
= 37.249m/s
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During this experiment, it was important to keep some parameters constant so we can compare the efficiency of different alcohols. Which one of the parameter was not constant?.
Answers
The purification of a wide range of materials involves the use of distillation, a significant commercial procedure.
The purification of a wide range of materials involves the use of distillation, a significant commercial procedure. However, it would definitely be helpful to clarify the terms that describe the procedure and related qualities before we start a discussion of distillation.
Although you may be familiar with several of these terms, you might not be aware of their precise definitions. Let's start by outlining the procedure for changing a material from its condensed phase to its gas phase. This process is known as sublimation for solids and vaporization for liquids. Both procedures call for heat.
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what are the wind energy meausering devices define
Answers
Anemometer
Explanation:
An anemometer is a device used for measuring wind speed and direction. It is also a common weather station instrument. The term is derived from the Greek word anemos, which means wind, and is used to describe any wind speed instrument used in meteorology.
18) Technician A says that adjustable wrenches should be used when
torquing fasteners. Technician B says that adjustable wrenches can round
the edges of fasteners. Which technician is correct?
A) Technician A only
B) Technician B only
O C) Both technicians
D) Neither technician
Answers
Q1: You have to select an idea developing an application like web/mobile or industrial, it should be based on innovative idea, not just a simple CRUD application. After selecting the idea do the following: 1) How your project will be helpful and what problem this project addresses. (10-Marks) 2) Write down the requirements. (10Marks) 3) List the functional and non-functional requirements of your project. (10marks) 4) Which process model you will follow for this project and why? (10marks) 5) Draw the Level 0, and level 1 DFD of your application. (20marks)
Answers
Answer:
Creating an app is both an expression of our self and a reflection of what we see is missing in the world. We find ourselves digging deep into who we are, what we would enjoy working on, and what needs still need to be fulfilled. Generating an app idea for the first time can be extremely daunting. Especially with an endless amount of possibilities such as building a church app.
The uncertainty has always spawned a certain fear inside creators. The fear of creating something no one will enjoy. Spending hundreds of dollars and hours building something which might not bring back any real tangible results. The fear of losing our investment to a poor concept is daunting but not random. But simple app ideas are actually pretty easy to come by.
Great app idea generation is not a gift given to a selected few, instead, it is a process by which any of us are able to carefully explore step by step methods to find our own solution to any problem. Whether you are a seasoned creator or a novice, we have provided a few recommendations to challenge and aid you as you create your next masterpiece.
if I am right then make me brainliest
Which of the following traits are Tesla specifically aiming to include in its vehicles to achieve competitive advantage? (Check all that apply.)
Multiple select question.
a. Versatility
b. Attractiveness
c. Sustainability
d. Affordability
Answers
a. Versatility b. Attractiveness c. Sustainability
d. Affordability
What is Versatility?Versatility is the capacity to adapt to different situations or contexts. It involves having the ability to adjust to changing environments and being able to handle different tasks with ease. Versatility can also be seen in the use of multiple skills, such as being able to switch between different roles or activities as needed. It is an important quality in any job and can be beneficial in many aspects of life. Having versatility can help one to become more flexible and resilient in an ever-changing world.
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3. Assertive communication means:
A. Confidently and directly communicating what you think and feel, without being aggressive
or passive
B.O Confidently saying what you think and feel, even If It means overshadowing someone
else's feelings
C.O Saying what you think and feel only If and when the other party gives you permission to
do so
D. None of the above
Answers
Answer:
A. Confidently and directly communicating what you think and feel, without being aggressive or passive.
Explanation:
Assertive communication is the ability to express both positive and negative ideas in a way that it is a honest and direct message. It doesn't mean to say things to the other person with the intent of causing harm or making them feel better, it's just saying things as they are.
Match the benefit of full synthetic oil with engine conditions: All engines
exhibit wear over time.
A. Synthetic provides maximum protection in extreme hot and cold temperature conditions.
B. Synthetic has greater resistance to oll thickening to maintain engine efficiency.
C. Synthetic Improves engine protection by resisting oil breakdown.
Answers
Answer:
1. All engines exhibit wear over time ⇒ Synthetic Improves engine protection by resisting oil breakdown.
Synthetic oil does not breakdown so easily which means that it protects the engine more and protects it from wearing.
2. Engines are cold at start-up and not while running ⇒ Synthetic provides maximum protection in extreme hot and cold temperature conditions.
By providing protection for the engine during cold and hot conditions, the engine will not be too cold when the car is started up.
3. If oil is thicker, engines lose power and efficiency ⇒ Synthetic has greater resistance to oil thickening to maintain engine efficiency.
Part of the characteristics of synthetic oil is that it does not get as thick as regular oil which means that the adverse effects of thick oil are spared on the engine.
: (a) A 3-phase induction motor has 8 poles and operates with a slip of 0.05 for a certain load Compute (in rpm): i. The speed of the rotor with respect to the stator ii. The speed of the rotor with respect to the stator magnetic field iii. The speed of the rotor magnetic field with respect to the rotor iv. The speed of the rotor magnetic field with respect to the stator V. The speed of the rotor magnetic field with respect to the stator magnetic field
Answers
The speed of the rotor with respect to the stator is 2,856 rpm, and the speed of the rotor with respect to the stator magnetic field is 2,860 rpm.
The synchronous speed of a 3-phase induction motor is given by the formula: Ns = 120f/p, where Ns is the synchronous speed in rpm, f is the frequency of the power supply, and p is the number of poles. In this case, since the motor has 8 poles, the synchronous speed is Ns = 120f/8 = 15f.
The speed of the rotor with respect to the stator is given by the formula: Nr = (1 - s)Ns, where Nr is the rotor speed, and s is the slip. The slip is given as 0.05, so the rotor speed is Nr = (1 - 0.05)15f = 14.25f.
The speed of the rotor with respect to the stator magnetic field is given by the formula: Nrm = Nr - Ns = 14.25f - 15f = -0.75f. This indicates that the rotor is rotating in the opposite direction to the stator magnetic field, with a speed of 0.75 times the frequency.
The speed of the rotor magnetic field with respect to the rotor is the slip speed, which is given as Nsr = sNs = 0.05*15f = 0.75f.
The speed of the rotor magnetic field with respect to the stator is the sum of the rotor speed and the rotor magnetic field speed, which is Ns + Nsr = 15f + 0.75f = 15.75f.
The speed of the rotor magnetic field with respect to the stator magnetic field is the difference between the rotor speed and the rotor magnetic field speed, which is Nr - Nsr = 14.25f - 0.75f = 13.5f.
Therefore, the calculated speeds are as follows: i) the speed of the rotor with respect to the stator is 14.25f or 2,856 rpm (assuming a 50 Hz power supply), ii) the speed of the rotor with respect to the stator magnetic field is -0.75f or -150 rpm, iii) the speed of the rotor magnetic field with respect to the rotor is 0.75f or 150 rpm, iv) the speed of the rotor magnetic field with respect to the stator is 15.75f or 3,150 rpm, and v) the speed of the rotor magnetic field with respect to the stator magnetic field is 13.5f or 2,700 rpm.
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An iron-constantan thermocouple is to be used to measure temperatures between 0and 400 degree C. What will be the non-linearity error as a percentage of the full-scale reading at 100 degree C If a linear relationship is assumed between e.m.f and temperature? E.M.F at 100 degree C= 5.268 m V; e.m.f at 400 degree C= 21.846 m V
Answers
The non-linearity error as a percentage of the full-scale reading at 100 degree C is - 0.89%.
What is non-linearity error?Non-linearity error is defined as the biggest deviation from a straight line linking the output signal to the applied force, known as the "best straight," that the calibration curve makes. In order to eliminate second order nonlinearity, the sensor signal conditioning system feeds a portion of the output signal back to the sensor.
If EMF and Celsius temperature have a proportional relationship, then the recorded value of EMF at 100 °C will be understood to be a temperature of.
T/5.268 = 400/21.846
T = 5.268(400/21.846) ≈ 96.457 °C
As a percentage of the full scale, the mistake is
(96.457 -100)/400 × 100% ≈ -0.886%
Thus, the non-linearity error as a percentage of the full-scale reading at 100 degree C is - 0.89%.
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the fact that the dataset includes people who all live in the same zip code might get in the way of ____ . 1 point spreadsheet formulas or functions fairness accuracy data visualization
Answers
The fact that the dataset includes people who all live in the same zip code might get in the way of accuracy and fairness.
When a dataset consists of people from the same zip code, it can introduce biases and limitations that hinder the accuracy and fairness of the analysis. Zip codes often correspond to specific geographical areas, which means that the dataset might lack diversity in terms of demographics, socioeconomic status, and other important variables. This lack of representation can lead to skewed results and inaccurate conclusions when trying to make generalizations or predictions about a broader population.
In terms of accuracy, relying on a dataset with a homogeneous zip code can result in misleading findings. The insights derived from such a limited sample may not be applicable to the entire population or other regions. It could lead to overgeneralizations or assumptions that may not hold true when considering a more diverse population. Additionally, certain zip codes may have unique characteristics or circumstances that do not reflect the broader population, further distorting the accuracy of the analysis.
Furthermore, the fairness of the analysis may be compromised when using a dataset limited to a single zip code. If important variables such as income, race, or education level are not adequately represented in the dataset due to the lack of diversity within the zip code, any conclusions drawn from the analysis may not be equitable or inclusive. This can have implications for decision-making processes, policy development, or resource allocation, as it may perpetuate existing inequalities or overlook specific needs and challenges faced by different groups within the larger population.
Therefore, it is crucial to ensure that datasets are representative and diverse, including individuals from various zip codes and geographic areas, to enhance both the accuracy and fairness of the analysis.
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Transport of airborne toxicants, a specific problem in agricultural environments, is called pesticide ________. Group of answer choices globalization leaching drift transposition run-off
Answers
Pesticide drift refers to the movement of airborne toxicants from their intended target area to other non-target areas, which can be a specific problem in agricultural environments.
Pesticide drift can occur due to various factors such as wind direction, application methods, and weather conditions. The unintended movement of pesticides can lead to contamination of soil, water, and air, which can have adverse effects on human health and the environment.
Pesticide drift refers to the unintentional movement of pesticide particles from the target area to non-target areas due to various factors, such as wind or evaporation. This can cause damage to nearby plants, animals, and human health.
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Help, quick please. I need help with my engineering word problem
Answers
Answer:
a
Explanation:
Which statements describe the motion of car A and car B? Check all that apply. Car A and car B are both moving toward the origin. Car A and car B are moving in opposite directions. Car A is moving faster than car B. Car A and car B started at the same location. Car A and car B are moving toward each other until they cross over.
Answers
Answer:
car a is moving faster than the car b
Answer:
B: Car A and car B are moving in opposite directions.
C: Car A is moving faster than car B.
E: Car A and car B are moving toward each other until they cross over.
Explanation:
I just did the assignment on EDGE2020 and it's 200% correct!
Also, heart and rate if you found this answer helpful!! :) (P.S It makes me feel good to know I helped someone today!!) :)
What is computer programming
Answers
Answer:
Computer programming is where you learn and see how computers work. People do this for a living as a job, if you get really good at it you will soon be able to program/ create a computer.
Explanation:
Hope dis helps! :)
We use the following helper class within our Binary Search Tree class to hold a tree node including the links to its children:
a)LLNode
b)DLLNode
c)BSTNode
d)T
Answers
The correct answer is c) BSTNode.
BSTNode is a helper class that holds a tree node, including the links to its left and right children. This class is essential to the Binary Search Tree (BST) data structure because it stores the actual data and helps to maintain the relationships between the nodes.
An explanation of the other options:
a) LLNode typically refers to a linked list node, which is not used in a BST.
b) DLLNode typically refers to a doubly linked list node, which is also not used in a BST.
d) T is a generic type parameter that is often used in data structures, but it is not a specific helper class for a BST.
In conclusion, the helper class used within a Binary Search Tree class to hold a tree node including the links to its children is BSTNode.
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An LTI system has the frequency response function H()- 1/(jw +3). Compute the output if the input is: (a) x(t) 3 (b) x(t) 3V2cos(3t) (c) x(t)-5cos(4t) (d) x(t) ö(t) (e) x(t) u(t) (f) x(t)1 (a) At to 1.2, for input (a), find the output of the system: Submit Answer Tries o/3 (b) At to-1.2, for input (b), find the output of the system: Submit Answer Tries 0/3 (c) At to-1.2, for input (c), find the output of the system
Answers
The output of the LTI system for the given inputs can be found by convolving the input signal with the impulse response function. The exact numerical values depend on the specific frequency response function and input signals provided.
How to compute LTI system output?To find the output of the LTI system for the given inputs, we need to perform the convolution of the input signal with the impulse response of the system. In this case, the frequency response function H(s) is given as:
H(s) = 1 / (js + 3)
To compute the output for each input, we'll use the inverse Laplace transform to obtain the impulse response function h(t), and then perform the convolution with the respective input signals.
(a) For input x(t) = 3:
Since x(t) = 3 is a constant input, the output y(t) will be the product of the input and the impulse response function:
h(t) = InverseLaplaceTransform(H(s)) = InverseLaplaceTransform(1 / (js + 3)) = e^(-3t)
Therefore, the output y(t) = x(t) * h(t) = 3 * e^(-3t)
To find the output at t = 1.2, substitute the value of t into the expression:
y(1.2) = 3 * e^(-3 * 1.2)
(b) For input x(t) = 3V2cos(3t):
Using Euler's formula, we can rewrite the input as x(t) = 3√2 * (1/2) * (e^(j3t) + e^(-j3t)):
x(t) = (3√2/2) * e^(j3t) + (3√2/2) * e^(-j3t)
To find the output, we'll first compute the response to each complex exponential term separately using the frequency response function H(s):
For the term e^(j3t):
H(j3) = 1 / (j(j3) + 3) = 1 / (-3 + 3j)
For the term e^(-j3t):
H(-j3) = 1 / (-j(-j3) + 3) = 1 / (-3 - 3j)
Now, we can calculate the response for each term and take the real part of the result to obtain the output y(t):
y(t) = Re{H(j3) * (3√2/2) * e^(j3t)} + Re{H(-j3) * (3√2/2) * e^(-j3t)}
To find the output at t = -1.2, substitute the value of t into the expression:
y(-1.2) = Re{H(j3) * (3√2/2) * e^(j3(-1.2))} + Re{H(-j3) * (3√2/2) * e^(-j3(-1.2))}
(c) For input x(t) = -5cos(4t):
We can express the cosine function in terms of complex exponentials using Euler's formula:
cos(4t) = (1/2) * (e^(j4t) + e^(-j4t))
Substituting this into the input expression:
x(t) = -5 * (1/2) * (e^(j4t) + e^(-j4t))
Now, similar to part (b), we'll calculate the response to each complex exponential term separately using the frequency response function H(s):
For the term e^(j4t):
H(j4) = 1 / (j(j4) + 3) = 1 / (-4 + 3j)
For the term e^(-j4t):
H(-j4) = 1 / (-j(-j4) + 3) = 1 / (-4 - 3j)
The output y(t) can be calculated as:
y(t) = Re{H(j4) * (-5/2) * (e^(j4t)} + Re{H(-j4) * (-5/2) * e^(-j4t)}
To find the output at t = -1.2, substitute the value of t into the expression:
y(-1.2) = Re{H(j4) * (-5/2) * e^(j4(-1.2))} + Re{H(-j4) * (-5/2) * e^(-j4(-1.2))}
Note: To obtain the exact numerical values, you need to substitute the values of H(jw) and H(-jw) into the expressions and perform the calculations.
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“We’re late for homeroom,” said Bonnie, surprised to hear herself say “we.” “EARL is a tool, Bonnie’s mother kept reminding her, not a friend or a puppy. ‘Don’t anthropomorphize it, honey,’ Bonnie’s mom said one night after she found Bonnie dancing around her bedroom with the metal contraption. ‘It’s a walking blender. Never forget that.”
QUESTION: What does, "Anthropomorphize" means in the sentences above?
(A) It means to program a robot so that it acts in a robotic or unnatural way?
(B) Or it means to give human characteristics to an object or animal?
(C) To make a human act more like an animal and less of a human?
(D) Or to make a human act more like an animal and less of a human?
Answer correctly
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Answers
Answer:
Hi there
Your answer is:
B.
Explanation:
The "metal contraption", as the text goes on to say, is treated like a friend to Bonnie. Her mom comments on this by contrasting the metal contraption to a puppy.
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All of the following are derived units except ________.
Answers
The option that is not a derived units is known to be option E) kg.
What are derived units and examples?The units that are known to be used for any form of derived quantities are said to be called the derived units.
They are:
The meter per second (distance)Mole per cubic meterVolumeNote that this unit are derived because they are known to be derived because they have to be solved for using different ways. The others such as kg m-3 is one that need to be derived to arrive at it.
Therefore, based on the above, one can say that The option that is not a derived units is known to be option E) kg because it is one that cannot be derived,
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The following are derived units EXCEPT
Options
A) kg m-3
B)N
C)Ns
D)m3
E)kg
Which of the following are consequences of burning coal for energy? (mark all that apply) Check All That Apply A. increased levels of CO2 in the atmosphere B. increased heavy metals (lead and mercury) released into the air C. acidified rain D. increased radicals that deplete ozone in the stratosphere:
Answers
The following are consequences of burning coal for energy increased levels of CO2 in the atmosphere, increased heavy metals (lead and mercury) released into the air and Acidified rain. The correct options are a, b and c.
Burning coal produces a number of main emissions: Sulphur dioxide (SO2), which causes respiratory conditions and acid rain, Nitrogen oxides (NOx), which cause respiratory diseases and smog, Particulates that cause lung sickness, respiratory diseases, fog, and haze, The main greenhouse gas produced by burning fossil fuels (coal, oil, and natural gas) is carbon dioxide (CO2).
Mercury and other heavy metals have been associated with developmental and neurological harm in both humans and other animals. Power stations produce bottom ash and fly ash as byproducts of burning coal.
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how old are legos? Who created them? Why did they create them?
Answers
“Who created them?” Ole Kirk Christiansen.
“Why did they created them?” As a you man, Christiansen turned his love of whittling and playing with wood into a Business and, in 1916, he opened his own shop. Since times were so hard, Christiansen made the hard decision to use his wood to create inexpensive goods that might actually sell. Among them were Cheap toys.
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