Answer:
All of the above
Explanation:
Why are there few effective HCI standards?
Answer:
There are few effective Human Computer Interaction (HCI) standards because for one, standards are more suitable for hardware than software because they are relatively unstable. ... Some software product standards have been in place long before any formal standard documents were published.
Find the second derivative of: y = sqrt(x + 4)/4; x ≥ -4.
Answer: [tex]\dfrac{-1}{16(x+4)^{\frac{3}{2}}}[/tex]
Explanation:
Given
[tex]y=\dfrac{\sqrt{x+4}}{4}\\\text{differentitate w.r.t x}\\\dfrac{\mathrm{d} y}{\mathrm{d} x}=\dfrac{1}{4}\times \dfrac{1}{2\sqrt{x+4}}=\dfrac{1}{8\sqrt{x+4}}[/tex]
[tex]\dfrac{\mathrm{d} y}{\mathrm{d} x}=\dfrac{(x+4)^{-0.5}}{8}[/tex]
Again differentiate for the second derivative
[tex]\frac{\mathrm{d^2} y}{\mathrm{d} x^2}=\dfrac{1}{8}\times \dfrac{-1}{2(x+4)^{\frac{3}{2}}}=\dfrac{-1}{16(x+4)^{\frac{3}{2}}}[/tex]
Answer: [tex]-\dfrac1{16}(x+4)^{-\frac32}[/tex] ; x ≥ -4.
Explanation:
Given: [tex]y=\dfrac{\sqrt{x+4}}{4}[/tex] ; x ≥ -4.
First derivative = [tex]\dfrac{dy}{dx}=\dfrac12\times\dfrac{(x+4)^{-\frac12}}{4}[/tex] [tex][ \dfrac{d(x^n)}{dx}=nx^{n-1} ][/tex]
[tex]=\dfrac{1}{8}(x+4)^{-\frac12}[/tex] ; x ≥ -4.
Second derivative= [tex]\dfrac{d^2y}{dx^2}=\dfrac{d}{dx}(\dfrac18(x+4)^{-\frac12})[/tex]
[tex]=\dfrac18\times-\dfrac12(x+4)^{-\frac12-1}\\\\=-\dfrac1{16}(x+4)^{-\frac32}[/tex]
The second derivative of y = [tex]-\dfrac1{16}(x+4)^{-\frac32}[/tex] ; x ≥ -4.
How often might ergonomic training be offered in the workplace
Answer:
'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?
'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?v'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'स माचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?'समाचार पत्र में लेख लिखना' किस मौलिक अधिकार का उदाहरण है?
Explanation:
"Aking Pangako"
Meron akong pangako,hindi mapapako
Upang hindi makasakit,sa damdamin ng ibang tao
Simple man o mahirap,piliting magampanan
Dahil tayo ay Pilipino,Tuloy ang pangako
Aking kaibigan, wag kang sasama ang loob
Kapag ako'y nangako,baka ito'y mapako
Gagampanan ko na,aking mga pangako
Upang 'di mag hiwalay,magkaibigang tunay.
The powertrain system is one of the major systems on the vehicle. Tech A states that this system helps to power the vehicle down the road. Tech B states that this system usually contains the engine and transmission. Who is correct?
Answer:
The powertrain system is one of the major systems on the vehicle.
Tech B states that this system usually contains the engine and transmission.
Technician B is correct.
Explanation:
The powertrain system contains three interconnected systems: the engine, the transmission, and the drivetrain. The engine part is the power source of the powertrain that ensures vehicular movement. The transmission system converts the engine's power into the normal movement of the vehicle. The drivetrain consists of the transmission, driveshafts, and the axles. These three parts of the powertrain system work seamlessly to ensure that the vehicle is able to move with some speed back and front, as may be desired.
A(n) ____ is an exact representation of an object projected onto a plane from a specific position.
Answer:
orthographic position
What is electrical energy being transformed into? How do you know?
Which of the following statements are true about staying safe while
working around all caught-in caught-between hazards?
Select two answers that apply.
What you should do changes based on hazards you’re exposed to.
You should be aware of any hazards that are present
You should be aware of the only hazards indicated as critical by management
What you should do is the exact same no matter the hazard
Answer:
What you should do changes based on the hazards you're exposed to.
You should be aware of any hazards that are present.
It is preferable not to drive a vehicle in reverse if you have an obstructed view, but if you do, make sure:
Answer:
While driving in reverse gear it necessary to have reverse audible alarm , a spotter and a rear view mirror.
Explanation:
It is prefer that to not drive a vehicle in reverse. But if we are driving in reverse gear it is necessary to have a reverse audible alarm , a spotter and a rear view mirror.
For the beam loaded as shown in Fig Q2a. perform the following task:
Calculate the support reactions at A and E;
(i)
Draw the shear force diagram for the beam showing all important
values;
>
(iii)
Draw the bending moment diagram for the beam showing all
important values.
6 kN
10 KN
2 kN/m
B
D
1 m
1 m
1 m
1 m
Answer:
a
Explanation:
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Why did the computer go to the doctor ?
Answer:
because it had a virus
Explanation:
You're welcome. Mark me brailiest
Which of the following headlines about the French Revolution is not true?
a) "Estates General Meet for First Time in 175 Years"
b) "National Assembly Issues Declarations of the Rights of Man"
c) "Reign of Terror Ends; Robespierre Dies"
d) "Napoleon Declares Himself Holy Roman Emperor"
e) All of the Above
f) None of the Above
Answer:
d) "Napoleon Declares Himself Holy Roman Emperor"
Explanation:
The French Revolution is defined as a period of the major social upheaval which began in the year 1787 and lasted till year 1799. This revolution completely redefined the the very nature of the political power in France. and also the relationship between the rulers of France and the people they governed.
The 1789 Estates-General was the 1st meeting since year 1614 of the French Estates-General. It is a general assembly which represents the French estates of realm.
During the French revolution was at peak, the National Assembly issued the Declaration of the rights of the man to the public.
Maximilien Robespierre was considered to be one of the most influential figure and most important statesman during the French Revolution.
Thus all the options (a),(b) and (c) are headlines about the French Revolution, except option (d).
A set of civil construction plans shows a distance of 131 meters across the front of a piece of property. You need to convert this value to feet. You know that one foot equals approximately 0.305 meters. What is the distance in feet, to the nearest tenth of a foot?
The distance when the civil construction plans shows a distance of 131 meters across the front of a piece of property is 430 feet.
How to calculate the distance?From the information given, it was stated that the civil construction plans shows a distance of 131 meters across the front of a piece of property.
Therefore, since one foot equals approximately 0.305 meters, the distance will be:
= 131/0.305
= 429.5 feet
= 430 feet approximately
In conclusion, the distance is 430 feet.
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A centrifugal pump is installed in a pipeline to raise water14.9 m into an elevated holding tank. The length of the ductileiron pipeline (f=0.019) connecting the reservoirs is 22.4 m. Thepipe is 5.0 cm in diameter and the performance curve of the pump isgiven by Hp =23.9?7.59Q2 where Hp is in meters, Q is in liters persecond, and the equation is valid for flows up to 1.5 L/s. Usingthis pump, what flow do you expect in the pipeline if minor lossesare ignored? What pump head is required for this flow?
Answer:
Hp = 23.86 m
Hence, 23.86 m head pump is required for this flow.
Explanation:
Solution:
Data Given:
Elevation = Z = 14.9 m
Friction of the ductile iron pipe = f = 0.019
Length of the ductile iron pipe connecting the reservoirs = 22.4 m
Diameter of the Pipe = D = 0.5 cm
Radius of the Pipe = r = D/2 = 0.25 cm
Performance Curve of the Pump = Hp = 23.9 - 7.59[tex]Q^{2}[/tex] , where Hp is in meters.
[tex]Q^{}[/tex] is in Liters/second and equation is valid for 1.5 L/s
We are asked to find out the pump head required for this flow.
We need to apply the energy equation for this problem:
Energy Equation:
[tex]\frac{P1}{\beta 1} + \frac{v1^{2} }{2g} + Z1 + Hp = \frac{P2}{\beta 2} + \frac{v2^{2} }{2g} + Z2 + H_{L}[/tex]
where, [tex]\beta[/tex] = specific weight of the fluid.
v1 = 0
P1 = P2 = P
Z1 = 0
Z2 = 14.9
Hence,
New equation is:
[tex]Hp = \frac{v2^{2} }{2g} + Z2 + H_{L}[/tex]
And
[tex]H_{L}[/tex] = [tex]\frac{fLv^{2} }{2gD}[/tex]
So,
[tex]Hp = \frac{v2^{2} }{2g} + Z2 + \frac{fLv^{2} }{2gD}[/tex]
Now, converting formula of v into terms of Q, we get
Hp = 23.9 - 7.59[tex]Q^{2}[/tex]
[tex]Hp = \frac{Q2^{2} }{2(9.81)(\frac{\pi }{4}(0.05^{2}))^{2} } + 14.9 + \frac{(0.09)(22.4)Q^{2} }{12.1(0.05)^{2} }[/tex]
23.9 - 7.59[tex]Q^{2}[/tex] = [tex]\frac{Q2^{2} }{2(9.81)(\frac{\pi }{4}(0.05^{2}))^{2} } + 14.9 + \frac{(0.09)(22.4)Q^{2} }{12.1(0.05)^{2} }[/tex]
Solving for Q, we will get
9 - 7.59[tex]Q^{2}[/tex] = 13233.71[tex]Q^{2}[/tex] + 112555.37[tex]Q^{2}[/tex]
[tex]Q^{}[/tex] = 7.154 x [tex]10^{-5}[/tex] [tex]m^{3}/s[/tex]
Converting it into L/s
Q = 0.0715 L/s
Putting this value of Q into the Hp equation to get the required answer:
Hp = 23.9 - 7.59[tex]Q^{2}[/tex]
Hp = 23.9 - 7.59 x [tex]0.0715^{2}[/tex]
Hp = Pump head
Hp = 23.86 m
Hence, 23.86 m head pump is required for this flow.
An earth dam is in danger of failing. A pump is needed to quickly drain the small lake behind the dam. The total energy head required to move water over the top of the dam is 2.43 m. The only pump available is an old 10-cm diameter propeller pump. The power requirement for the motor is 1,000 w and the pump-motor combination has a low efficiency of 50%. Estimate the drawdown (how many centimeters the lake goes down) in the first 2-hour period if the lake has a surface area of 5,000 m2. (Note: Assume that the energy head the pump must overcome does not change much as the lake is lowered in the first 2 hours.)
Answer: the drawdown of the lake in centimeters is 3.02 cm
Explanation:
Given data;
Power of motor = 1000 W
efficiency M = 50% = 0.5
so Effective power = 1000 × 0.5 = 500 W
time t = 2 hrs = 2 × 60 × 60 = 7200 secs
so
Energy = p × t = 500 × 7200 = 3,600,000 J
Now Energy required to pump water to height h = mgh (J)
3,600,000 J = mgh
m = 3,600,000 / gh
given that; h is 2.43 and we know that g is 9.81, we substitute
m = 3,600,000 / (9.81 × 2.43)
m = 3,600,000 / 23.8383
m = 151017.48 kg
Now we know that, Volume = Mass / Density [density of water]
so, Volume = 151017.48 / 1000
Volume = 151.01748 kg/m³
given that surface area = 5000 m²
Drawdown = 151.01748 / 5000
Drawdown = 0.3020 m
we convert to centimeter
Drawdown = 0.3020 m × 100
Drawdown = 3.02 cm
Therefore the drawdown of the lake in centimeters is 3.02 cm
How did ancient machines pave the way for improvement
Answer:
----------
Explanation:
Ancient machines have paved the way for improvement by being the foundation for change. these machines made it possible to find flaws so in the next generations, they could fix, develop, and produce better quality machines. eventually this process has reached the present time but after today, the process will continue to produce even better quality machines than the time before. I hope this helps!
In the given example, which type of interior designer is Sarah? Sarah is an interior designer. The state in which she resides applies practice acts to interior design professionals. Therefore, Sarah carries the title of a ____ interior designer.
Answer:
Sarah is a professional interior designer.
Therefore, Sarah carries the title of a _registered___ interior designer.
Explanation:
Some states require only the licensed designers to carry out interior designs, while some others allow both the licensed and unlicensed interior designers to carry on the work of interior designers. In the states where only the licensed designers are allowed to use the title of interior designer, they are registered after passing the state-prescribed examinations and meeting some professional experience requirements. The most common exam is the National Council for Interior Design Qualification (NCIDQ) examination, which only bachelor degree holders in interior design are allowed to sit for.
Which one of the following would appear as a thin line on a drawing?
A. Centerline
B. Cutting plane line
C. Short break line
D. Outline
Answer:
try b
Explanation:
Typical journal-to-bearing clearance is......
A) 0.00015 to 0.00018 inch
B)0.0005 to 0.0025 inch
C) 0.15 to 0.25 inch
D)0.02 to 0.035 inch
The typical journal-to-bearing clearance for engines is,
B) 0.0005 to 0.0025 inch
Given that,
To find the typical journal-to-bearing clearance for engines.
Now, The range 0.0005 to 0.0025 inch represents the recommended clearance between the rotating journal of the crankshaft and the bearing surface to ensure proper lubrication and minimal friction.
Hence, The correct option for typical journal-to-bearing clearance for engines is,
B) 0.0005 to 0.0025 inch.
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When handling chemicals and solvents, technicians are recommended to
Answer:
To wear PPEHave prior knowledge of explosive levels and elemental propertiesKnow procedure to eliminate any threatAnswer
have PPE on wash hands after
Explanation:
Saturated refrigerant-134a vapor at 15 psia is compressed reversibly in an adiabatic compressor to 80 psia. Determine the work input to the compressor. Use the tables for R-134a.
The initial enthalpy and the entropy of the saturated water can be found out from the table of A-12E
i.e. [tex]$h_1= 101 \ \text{Btu/lbm}$[/tex]
[tex]$s_1 = 0.22717 \text{ Btu/lbmR}$[/tex]
Since the process mentioned above is an adiabatic compression process, the entropy will remain constant throughout the process. Therefore, we take the value of entropy and the final pressure using the table with few interpolations and also approximations to find the final enthalpy. It is given by :
[tex]$h_2= 116.09 \text{ Btu/lbm}$[/tex]
So the work input from the energy balance equation :
[tex]$\dot{W} + \dot{m}h_1 = \dot{m}h_2$[/tex]
[tex]$w=h_2 - h_1$[/tex]
= 116.09 - 101
= 15.09
Therefore, [tex]$w= 15.09 \text{ Btu/lbm}$[/tex]
please help me solve this
Answer:
Following are the solution to this question:
Explanation:
[tex]\to \Sigma F_x = ma_x \\\\\to 3200 t^2 -440 (9.81) (\frac{8}{17}) = 440 (a) \\\\\to 3200 t^2 -2031.24 = 440 (a)\\\\\to a= 7.27t^2 -4.616\\\\\to dv=a.dt \\\\\to \int^{v}_{2} dv = \int^{2}_{0} (7.27t^2 -4.616) dt\\\\\to v-2 = 7.27 \frac{t^3}{3} - 4.616 t^{2}_{0}\\\\\to v-2 = 7.27 \frac{2^3}{3} - 4.616 {2} \\\\\to v-2 = 10.154\\\\\to v= 12.154 \ \frac{m}{s}\\[/tex]
What should Kimi have done to ensure that she was acting legally and ethically?
Answer:
Kimi have done to ensure that she was acting legally and ethically by following the measure that are discussed below in detail.
Explanation:
Legal measures are those measures that are outlined in regulatory laws. Ethical measures are based on the human postulates of morality and wrongdoing. The distinctions between them are these: Legal measures are based on transcribed law, while ethical measures are based on human rights and violations.
Find and write the mathematical problem formulation of shortest path problem
The current at resonance in a series L-C-R circuit is 0.2mA. If the applied voltage is 250mV at a frequency of 100 kHz and the circuit capacitance is 0.04 microfrad . Find the circuit resistance and inductance
Answer:
The resistance of the circuit is 1250 ohmsThe inductance of the circuit is 0.063 mH.Explanation:
Given;
current at resonance, I = 0.2 mA
applied voltage, V = 250 mV
resonance frequency, f₀ = 100 kHz
capacitance of the circuit, C = 0.04 μF
At resonance, capacitive reactance ([tex]X_c[/tex]) is equal to inductive reactance ([tex]X_l[/tex]),
[tex]Z = \sqrt{R^2 + (X_ l - X_c)^2} \\\\But \ X_l= X_c\\\\Z = R[/tex]
Where;
R is the resistance of the circuit, calculated as;
[tex]R = \frac{V}{I} \\\\R = \frac{250 \ \times \ 10^{-3}}{0.2 \ \times \ 10^{-3}} \\\\R = 1250 \ ohms[/tex]
The inductive reactance is calculated as;
[tex]X_l = X_c = \frac{1}{\omega C} = \frac{1}{2\pi f_o C} = \frac{1}{2\pi (100\times 10^3)(0.04\times 10^{-6} ) } = 39.789 \ ohms\\[/tex]
The inductance is calculated as;
[tex]X_l = \omega L = 2\pi f_o L\\\\L = \frac{X_l}{2\pi f_o}\\\\L = \frac{39.789}{2\pi (100 \times 10^3)} \\\\L= 6.3 \ \times \ 10^{-5} \ H\\\\L = 0.063 \times \ 10^{-3} \ H\\\\L = 0.063 \ mH[/tex]
The ____________________ is used to measure the power required to operate a device.
Answer:
multimeter
Explanation:
there's several devices that are used to measure power. the most common one is a multimeter. there's also the voltmeter and ammeter or the oscilloscope.
what document is the primary reference document when making ethical decisions?
Find the derivative of y = sin(ln(5x2 − 2x))
Answer:
[tex]y = \cos[\ln x + \ln (5\cdot x - 2)]\cdot \left(\frac{1}{x} + \frac{5}{5\cdot x-2} \right)[/tex]
Explanation:
Let [tex]y = \sin[\ln(5\cdot x^{2}-2\cdot x)][/tex] and we proceed to find the derivative by the following steps:
1) [tex]y = \sin[\ln(5\cdot x^{2}-2\cdot x)][/tex] Given
2) [tex]y = \sin [\ln[x\cdot (5\cdot x - 2)]][/tex] Distributive property
3) [tex]y = \sin[\ln x + \ln (5\cdot x - 2 )][/tex] [tex]\ln (a\cdot b) = \ln a + \ln b[/tex]
4) [tex]y = \cos[\ln x + \ln (5\cdot x - 2)]\cdot \left(\frac{1}{x} + \frac{5}{5\cdot x-2} \right)[/tex] [tex]\frac{d}{dx} (\sin x) = \cos x[/tex]/[tex]\frac{d}{dx}(\ln x) = \frac{1}{x}[/tex]/[tex]\frac{d}{dx}(c\cdot x^{n}) = n\cdot c\cdot x^{n-1}[/tex]/Rule of chain/Result
Omg I just got 17/25 questions wrong using this on an Ag test , but got 100’s every time on health
Answer:
sorry im answering questions for the points cuz im built dfferent
Explanation:
Answer: That happens to me too sometimes. I hate when people give the wrong answers...like if u don't know the answer, then don't respond
Most of the work that engineers do with fluids occurs in nature. True False
Answer:
It's False
Explanation:
I did the assignment
meaning of construction
Answer:
the action of building something, typically a large structure.
Explanation:
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