The displacement after 0.25 seconds is 0.012 m or 12 mm (approximately)
The undamped natural frequency of the system can be calculated as:
ωn = √(k/m) = √(360/2.4) = 15 rad/s
The damping ratio can be calculated as:
ζ = c/(2√(mk)) = 10/(2√(2.4*360)) = 0.087
The critical damping coefficient is:
cc = 2√(mk) = 2√(2.4*360) = 49.5 Ns/m
The damped natural frequency is:
ωd = ωn√(1-ζ^2) = 15√(1-0.087^2) = 14.8 rad/s
The approximate settling time can be estimated as:
ts ≈ 4/(ζωn) = 4/(0.087*15) = 3.04 s
To find the displacement after 0.25 seconds, we need to first calculate the initial displacement in terms of the natural frequency as:
x0 = 10/1000 = 0.01 m
x0/ξ = A
where ξ = ζ√(1-ζ^2) is the amplitude factor and A is the amplitude of the system. Therefore, we have:
A = x0/ξ = 0.01/(0.087√(1-0.087^2)) = 0.111 m
The displacement of the system at time t can be expressed as:
x(t) = Ae^(-ζωn t)sin(ωd t)
So the displacement after 0.25 seconds is:
x(0.25) = 0.111 e^(-0.087150.25)sin(14.8*0.25) = 0.012 m or 12 mm (approximately)
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A resistor has code 104 printed on it .What is the resistive value of this resistor
Answer:
X = 1 (1st digit in the code)
Y = 0 (2nd digit)
Z = 4 (3rd multiplier digit)
104 → 10 × 10^4 Ω
→ 10 × 10000Ω
→ 100 kΩ
resistors are marked 104, 105, 205, 751, and 754. The resistor marked with 104 should be 100kΩ (10x10^4), 105 would be 1MΩ (10x10^5), and 205 is 2MΩ (20x10^5). 751 is 750Ω (75x10^1), and 754 is 750kΩ (75x10^4).
Here we need to understand how a code in a resistor gives us information on the resistor. Here we will see that the code means that the resistance is 100,000 Ω.
When we use numbers, let's assume that we have 3 single-digit numbers abc.
So if the code in our resistor is abc, this will mean that the resistance of the resistor is:
ab×10^c Ω
Using this general rule we can see that if the code is 104, then the resistance will be:
r = 10×10^4 Ω
= 100,000 Ω
Then we can conclude that the resistive value of this resistor is 100,000 Ω
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Which of the following is not a social institution?
a. Mass media
b. Peer group
c. Healthcare
d. Government
Mass media is not typically considered a social institution.
Instead, it is often regarded as a societal subsystem or a form of communication and information dissemination. Social institutions, on the other hand, are recognized as established systems or structures that fulfill specific functions and play crucial roles in society.
Let's briefly discuss the other options:
b. Peer group: Peer groups, consisting of individuals of similar age, social status, or interests, are considered social institutions. They provide a context for socialization, support, and the development of shared norms and values.
c. Healthcare: Healthcare is recognized as a social institution. It encompasses various organizations, professionals, and systems that provide medical services, promote public health, and address individual and community well-being.
d. Government: Government is a fundamental social institution responsible for establishing and enforcing laws, maintaining social order, providing public services, and managing governance and decision-making processes within a society.
It's worth noting that the classification of social institutions may vary among sociologists, and there can be debates and variations in their definitions. However, in general, mass media is not typically considered a social institution due to its distinct characteristics and functions compared to recognized social institutions like education, family, religion, economy, healthcare, and government.
Thus, the correct option is "a".
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Television remote controls use infrared (light wave) signals to allow a viewer to change channels from a distance. Which of the following best describes the operation of the remote control?answer choicesdecoding and storingstoring and retrievingencoding and transmitting
The best description for the operation of a television remote control is option (c) encoding and transmitting. This is because the remote control encodes the user's input (e.g. pressing a button to change the channel) into a specific infrared signal, which is then transmitted from the remote control to the television receiver.
This is correct because the infrared signal from the remote control is not decoded or stored within the remote control. Instead, it is an encoded signal that is sent directly to the television receiver to perform a specific function. The encoding and transmission of the infrared signal is what allows the remote control to operate the television from a distance.
Option (a) decoding and storing is not correct because the remote control does not decode or store any signals. Option (b) storing and retrieving is also not correct because the remote control does not store any signals to be retrieved later. It only transmits an encoded signal in real-time to operate the television receiver.
Therefore, the correct description for the operation of a television remote control is encoding and transmitting. The remote control encodes the user's input into an infrared signal, which is then transmitted to the television receiver to perform a specific function. This allows the viewer to change channels or perform other functions from a distance.
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Which of the following best describes an objective statement?
A.an understanding to follow certain procedures
B.a goal or aim
C.a subset of specific information
D.a written contract
Answer:
B
Explanation:
A short statement that describes what you want
A goal or aim best describes an objective statement.
What is objective statement?
Objectives are utilised in many different corporate and job-search scenarios. They are brief sentences that express just what you desire. While your ultimate objective may be to find work, your resume statement may mention that you wish to work as a nurse. In a business setting, aim statements contain specifics on how you intend to attain a corporate goal. In the past, one of the most typical places to see goal statements was in resumes. They were the one to three lines of text at the top of a resume that notified an employer a little about the candidate's level of experience and the type of job they desired.
An objective statement is a brief, position-centered statement that describes the value you can provide and the needs you can meet. A concise explanation of the skills and qualifications you will offer to a position may be included in an objective. A professional summary is more detailed and longer than an objective statement.
So, the right answer is B.
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which of the following documents instructs firefighters regarding the size and capacity of a building's standpipe systems and the pumps supplying those systems?
The documents that instruct firefighters regarding the size and capacity of a building's standpipe systems and the pumps supplying those systems are called: "Fire department Preplan.
What is a Fire department Preplan?A fire pre-plan is a scenario-based plan that is tailored to a specific process area or piece of equipment. The site emergency response plan should include a reference to all fire pre-plans. They should explain how to utilize the fire prevention and emergency response systems in certain fire case situations.
Items that should be included in a pre-plan include:
Building plan and design specifications, such as fire-rated walls, doors, and windowsFloor layouts for every level of the building.Alarm systems and fire suppression systemsLocation and information about hydrantsThe fire service's management principles include discipline, division of work, unity of command, and line of authority. Building codes control the materials used in building. It is valuable to explore the past and present fire service.
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stresses gr, σ,, and try for the stress function φ =pry, where p is a constant. (b) Draw a sketch showing the boundary stresses on the plate. (c) Find the resultant normal and shearing boundary forces (P, Py, V, and Vy) along all edges of the plate. t i
P is the nοrmal fοrce alοng the x-axis, Py is the nοrmal fοrce alοng the y-axis, V is the shearing fοrce alοng the x-axis, and Vy is the shearing fοrce alοng the y-axis.
What is shearing bοundary fοrce?Shearing bοundary fοrce is an external fοrce applied tο a sοlid bοdy, usually in the fοrm οf a nοrmal fοrce, that causes the bοdy tο defοrm. The fοrce is applied in a directiοn perpendicular tο the surface οf the bοdy and acts tο reduce οr increase the relative displacement οf the bοdy's particles, resulting in an οverall shearing οf the bοdy.
Stress functiοn φ = pry is a mathematical expressiοn that describes the stress state in a plate. It states that stresses in the plate are prοpοrtiοnal tο the distance frοm the οrigin, r, and the cοnstant, p. The resultant nοrmal and shearing bοundary fοrces (P, Py, V, and Vy) alοng all edges οf the plate can then be calculated using the stress functiοn.
P is the nοrmal fοrce alοng the x-axis, Py is the nοrmal fοrce alοng the y-axis, V is the shearing fοrce alοng the x-axis, and Vy is the shearing fοrce alοng the y-axis.
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2.2.2 Make a list of the electronic components that could be used in making this product (energy saving switch).
The electronic components that could be used in making of energy saving switch are:
Transistors semiconductor devices CapacitorsCoils (inductors) Which electronic component is used as a switch?Transistors as well as other kinds of semiconductor devices are known to be tools or element that can be used in the making of switches. In its use or applications.
Note that the base or gate of a transistor, based on the kind of transistor that is known to be in use, and it is one that is often employed as a form of control element to be able to switch on as well as switch off the current that often exist between the emitter as well as the collector or the source and that of the drain.
Note also that the electronic components that are able to store energy in regards to electronic devices, are known to be capacitors and coils (inductors) and they often play a key function of temporarily saving energy. One key role of a capacitor is to save an electric charge.
Therefore, The electronic components that could be used in making of energy saving switch are:
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Which tool is used to protect a hose line that is being hoisted over a sharp edge?
Answer:
A hose roller
Explanation:
Which of the following best describes "sleep-driving"?
A. Driving while sleepy.
B. It is similar to sleep-walking.
C. Dreaming of driving, while sleeping.
The statement It is similar to sleep-walking Option(b) is the one that best describes "sleep-driving".
What does it mean to drive while fatigued?Driving while fatigued or drowsy is known as sleep driving. This typically occurs when a driver hasn't had enough sleep, but it can also occur as a result of untreated sleep disorders, drug use, alcohol consumption, or shift employment.
According to the Division of Sleep Medicine at Harvard Medical School, there are 250,000 drivers who consistently fall asleep behind the wheel in the United States. In a public survey conducted by the National Sleep Foundation, 54% of adult drivers admitted to driving while drowsy in the previous year, with 28% admitting to actually falling asleep behind the wheel.
The National Highway Traffic Safety Administration estimates that tired driving causes more than 100,000 accidents, resulting in around 6,550 fatalities.
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The assertion It is comparable to sleepwalking. Option (b) best describes "sleep-driving"
What does it mean to drive while fatigued?Driving while fatigued or drowsy is known as sleep driving. This typically occurs when a driver hasn't had enough sleep, but it can also occur as a result of untreated sleep disorders, drug use, alcohol consumption, or shift employment.According to the Division of Sleep Medicine at Harvard Medical School, there are 250,000 drivers who consistently fall asleep behind the wheel in the United States. In a public survey conducted by the National Sleep Foundation, 54% of adult drivers admitted to driving while drowsy in the previous year, with 28% admitting to actually falling asleep behind the wheel.The National Highway Traffic Safety Administration estimates that tired driving causes more than 100,000 accidents, resulting in around 6,550 fatalities.To learn more about sleep-driving refer to
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A truss is subjected to three loads. The truss is supported by a roller at A and by a pin joint at B. What is most nearly the reaction force at B
Answer:
Hello the diagram related to the question is missing attached is the diagram
Answer : 3833.33 KN
Explanation:
The most nearly reaction force at B
= ∑ Mb = 0 = 21Ay
= (2000 * 17.5 ) + ( 3000 * 10.5 ) + ( 4000 * 3.5 )
= 35000 + 31500 + 14000 = 80500
therefore Ay = 80500 / 21 = 3833.33 KN
x = 7/2 = 3.5m
What can you do to protect your hands from any hazards on your worksite? Select the 2 answer options that apply. Use your gloves correctly Avoid jobs that could hurt your hands Always wear gloves Inspect your gloves for any damage before wearing
Answer:
"Use your gloves correctly" and "Inspect your gloves for any damage before wearing."
Explanation:
If you don't use your gloves correctly you could risk your hands being infected/burned. If your gloves are damaged they will provide minimum protection but there is still a potential safety hazard.
Answer:
Use your gloves correctly
Inspect your gloves for any damage before wearing
When we drive our car at 90 feet per second [ft/s], we measure an aerodynamic force (called drag) of 59 pounds-force [lbf] that opposes the motion of the car. How much horsepower [hp] is required to overcome this drag?
Answer:
P = 9.65 hp
Explanation:
Given that,
Speed of a car, v = 90 ft/s
Force that opposes the motion of the car, F = 59 pounds-force
90 ft/s = 27.432 m/s
1 pound-force = 4.448 N
59 pounds-force = 262.445 N
Power required is given by :
\(P=F\times v\\\\P=262.445\ N\times 27.432\ m/s\\\\P=7199.391\ W\)
Since, 1 hp = 745.7
7199.391 W = 9.65 hp
So, 9.65 hp of power is required to overcome the drag.
The chart describes four people’s credit histories.
Creditworthy Criteria
Name
Description of Credit History
Ellie
Has more debt than earnings
Collin
Pays only some of his bills every month
Jacob
Has made three late payments in the past year
Eesha
Pays more than the minimum payment each month
Which person is creditworthy?
Answer:
D). Eesha pays more than the minimum payment each month.
Explanation:
Eesha would be considered most creditworthy among the given persons as she not only pays on time but also repays more than the minimum amount assigned to pay each month. In order to test the creditworthiness of an individual, his ontime debt paying capability is tested at first followed by the past credit repayment history and the credit score. Except Eesha, all the given candidates have failed to make timely repayment of their debts and hence, they cannot be considered creditworthy.
what process is used to remove collodal and dissolved organic matter in waste water
Answer:
Aerobic biological treatment process
Explanation:
Aerobic biological treatment process in which micro-organisms, in the presence of oxygen, metabolize organic waste matter in the water, thereby producing more micro-organisms and inorganic waste matter like CO₂, NH₃ and H₂O.
The I26 profile beam is supported and loaded as in the figure. It is required to calculate the vertical movement of the free end and the rotation of the free end.
Answer:
...
Explanation:
...
I want to draw a monster should i do it on my free time and if you want to give me ideas.
Answer:
yes
Explanation:
an idea could be a jack o lantern monster since it Halloween tomorrow
who designs each page or screen with which a user interacts?
Answer:
UI Design
Explanation:
A 40-horsepower, 230-volt, 3-phase synchronous motor uses non–time-delay fuses for motor branch-circuit short-circuit and ground-fault protection. Calculate the maximum rating for a non–time-delay fuse
The maximum rating for a non-time delay fuse for a 40-horsepower, 230-volt, 3-phase synchronous motor using non-time delay fuses for short-circuit and ground-fault protection is 93.6 amps.
Given that,
The motor is a 40-horsepower, 230-volt, 3-phase synchronous motor
Non-time delay fuses are used for motor branch-circuit short-circuit and ground-fault protection
The maximum rating for the non-time delay fuse needs to be calculated
To determine the maximum rating for a non-time delay fuse for the given motor, we'll need to use the following formula:
Maximum fuse rating = 125% x motor full-load current
First, we need to determine the full-load current of the motor.
We can do this by using the following formula:
Full-load current = (horsepower x 746) / (√(3) x voltage)
Plugging in the values we have, we get:
Full-load current = (40 x 746) / (√(3) x 230) = 74.9 amps
Now we can use this value to calculate the maximum fuse rating:
Maximum fuse rating = 125% x 81.4 amps = 93.6 amps
So, the maximum rating for a non-time delay fuse for the given motor is 93.6 amps.
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Multiple Choice
Which of the following analogies best describes the relationship between urban planning and zoning?
Zoning is like a hammer because it is used as a tool for urban planning.
Zoning is like a butterfly because it is the final form of urban planning.
Zoning is like a stop sign because it is an obstacle to urban planning.
Zoning is like an egg because it is the process from which urban planning emerges.
Answer:
Zoning is like a hammer because it is used as a tool for urban planning.
Use the ________________ property to configure rounded corners with CSS?
Answer: border-radius
Explanation:
Kimber has been tasked with assembling her department's latest updates into a single document. as she combines multiple documents, what's an important word processing skill to know that ensures the end result is organized and easy to use? question 7 options: footnoting animation bookmarking pagination
When it comes to combining multiple documents, an important word processing skill to know that ensures the final result is organized and easy to use is pagination.
Pagination is a page numbering technique that is done sequentially. These page numbers are usually located at the top or bottom of the web page. In most cases, it is used for main pages and partitions in corporate websites. This kind of design can generally make the user experience simpler on the site. They can also feel more comfortable when it comes to distributing and navigating products within the website.
For example, like this, imagine an e-commerce site that consists of hundreds of product catalogs from various categories. Of course, these products will not be found easily if only placed on one page. As a solution, UI developers and designers can take advantage of pagination to make product placement more structured.
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A handsfree device may be used if it can be activated or deactivate with a?
A handsfree device may be used if it can be activated or deactivate with a cellphone.
What is hands-free?Handsfree is a device which when connected to a cell device can be used in listening to audio, video and messages.
A driver can also activate or deactivate with a swipe when connect to the vehicle audio device.
Therefore,
A handsfree device may be used if it can be activated or deactivate with a cellphone.
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The ____ neurons allow the body to move and are greatly influenced by electri
A. compression
B. motor
C. positive
D. mobile
Answer:
the answer would be B motor
there is usually a positive side and a negative side to each new technological improvement?
Answer:
positive sides:
low cost improves production speedless timeeducational improvementsnegative sides:
unemployment lot of space required increased pollution creates lots of ethical issuesA robot with artificial intelligence would best be suited for
What does Enter key do?
You cannot click Enter key to start a line if your current is blank?
This is spot to do today
Answer:
See below
Explanation:
Enter-key also called the "Return key," it is the keyboard key that is pressed to signal the computer to input the line of data or the command that has just been typed.It Was the Return KeyThe Enter key was originally the "Return key" on a typewriter, which caused the carriage to return to the beginning of the next line on the paper. In a word processing or text editing application, pressing Enter ends a paragraph. A character code for return/end-of-line, which is different in Windows than it is in the Mac, Linux or Unix, is inserted into the text at that point.
Answer:
True
Explanation:
Once there are two yellow lines having inner broken lines on the two sides of a center traffic lane, what this is trying to tell you is that you can use those lanes to start a left hand turn, or a U-turn from the both directions of traffic. However you cannot use it for passing. This is sometimes misunderstood by road users and drivers.
With direct fuel injection the gasoline is injected:
Answer:
Gasoline is injected directly into the cylinder.
Explanation:
In a direct injection system, the air and gasoline are not pre-mixed. Rather, air comes in using the intake manifold, while the gasoline is injected directly into the cylinder.
a) Describe the operation of a heat pump operating on the theoretical reversed Carnot cycle, with a neat sketch of the layout.
b) What modifications are required in order to convert a steam power plant working on the ideal Carnot cycle to a plant operating on the Rankine cycle? Explain briefly why these modifications are necessary to enable the operation of a practical cycle? Illustrate your answer with sketches using appropriate property diagrams (p-v and T-s diagrams).
Answer:
a) The operation of a heat pump involves the extraction of energy in the form of heat Q₁ from a cold source
b) The modifications required to convert a plant operating on an ideal Carnot cycle to a plant operating on a Rankine cycle involves
i) Complete condensation of the vapor at the condenser to saturated liquid for pumping to the boiler
ii) Heating of the pumped, pressurized water to the boiler pressure
Explanation:
a) 1 - 2. Wet vapor enters compressor where it undergoes isentropic compression to state 2 by work W₁₂
2 - 3. The vapor enters the condenser at state 2 where it undergoes isobaric and isothermal condensation to a liquid with the evolution of heat Q₂
3 - 4. The condensed liquid is expanded isentropically with the work done equal to W₃₋₄
4 - 1. At the state 4, with reduced pressure from the previous expansion, the liquid makes its way to the evaporator where it absorbs heat, Q₁, from the body to be cooled.
b. i) Complete condensation of the vapor at the condenser to saturated liquid for pumping to the boiler
Here the condensation process is modified from partial condensation to complete condensation at the same temperature which reduces the size of the pump required to pump the liquid water as opposed to pumping steam plus liquid
ii) Heating of the pumped, pressurized water to the boiler pressure
The pumped water at state 4 will be required to be heated to saturated water temperature equivalent to the boiler pressure, hence heat will need to be added at state.
Sketches of the schematic of a Basic Rankine cycle is attached
# Structure Mechanics.
Draw the internal force (axial force, shear force and moment) diagrams of the frame.
CRM does not advocate or support any undermining of __________________.
On page 391, CRM states that it opposes any undermining of legitimate power.
What does CRM mean for firefighters?In order to implement crew resource management, fire and rescue service leadership and operating cultures that have developed through generations must be changed. The objectives of CRM are to maximize human performance and minimize the impact of human error on operations.
What makes crew resource management crucial?Teams can overcome problems with poor resource management, ineffective decision-making, insufficient or unclear leadership, and poor communication by using crew resource management. CRM's objective is to enable a team to efficiently utilize all of its tools and expertise to accomplish its objectives.
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