Suppose you have generated a USB SSB signal with a nominal carrier frequency of 10 MHz. What is the minimum frequency the SSB signal can be mixed with so that the output signal has a nominal carrier frequency of 50 MHz? a 6. Suppose you have an FM modulator that puts out 1 MHz carrier with a 100-hertz deviation. If frequency multiplication is used to increase the deviation to 400 hertz, what will be the new carrier frequency? 7. What is the efficiency of a 100-watt mobile transmitter if it draws 11 amps from a 12-volt car battery?
Answers
The efficiency of the 100-watt mobile transmitter is 75.7%. A frequency multiplier is used to increase the frequency deviation of an FM modulator from 100 Hz to 400 Hz.
The new carrier frequency will be 1.4 MHz.Explanation:FM (Frequency Modulation) is a method of modulating an RF carrier signal to represent the changes in the amplitude of the audio signal. The carrier frequency is varied in frequency with the help of the audio signal.The FM modulator that generates 1 MHz carrier and 100-hertz deviation is given. And it is to be multiplied so that the deviation becomes 400 Hz.Frequency multiplier can be used to increase the frequency deviation of a modulator. A frequency multiplier is an electronic circuit that generates an output signal whose frequency is a multiple of its input signal.
For example, if a 1 MHz carrier signal is input to a frequency multiplier circuit, the output will have a frequency of 2 MHz if it is a doubler, 3 MHz if it is a triple, and so on.The frequency multiplier circuit that is used to multiply the deviation of the FM modulator is most likely a double frequency multiplier. Because a double frequency multiplier would multiply the frequency by a factor of 2 and the deviation would be multiplied by 4 times.Therefore, the new frequency deviation will be 4*100 = 400 Hz.New carrier frequency,fc = fm±∆f, where fm is the frequency of the modulating signal and ∆f is the deviation frequency.
For a frequency modulator with a carrier frequency of 1 MHz and a deviation of 100 Hz, the maximum frequency can be represented by (1 MHz + 100 Hz) = 1.0001 MHz, and the minimum frequency can be represented by (1 MHz - 100 Hz) = 0.9999 MHz.4 times deviation will be = 4*100 Hz = 400 HzTherefore, the new carrier frequency will befc = 1.0001 MHz + 400 Hz = 1.0005 MHz.The new carrier frequency will be 1.0005 MHz.7. The efficiency of a 100-watt mobile transmitter that draws 11 amps from a 12-volt car battery is 84.7%.Explanation:Power = Voltage * Current = 12 V * 11 A = 132 WattsThe power output of the mobile transmitter is 100 W, and it is taking 132 W from the battery.The efficiency of the transmitter can be calculated asEfficiency = Output power / Input power * 100%= 100 / 132 * 100% = 75.7%Therefore, the efficiency of the 100-watt mobile transmitter is 75.7%.
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Related Questions
How do you know when you are operating your vessel at a safe speed?
a. No other vessels are passing you
b. You are not overtaking any other vessels
c. You are going slower than vessels towing skiers
d. You have enough time to avoid a collision
Answers
When operating a vessel, determining a safe speed involves considering various factors to ensure the safety of the vessel, its occupants, and other vessels in the vicinity. It is important to maintain a speed that allows for proper maneuverability and sufficient reaction time to avoid collisions.
Some key considerations for determining a safe speed include:
1. Visibility: Consider the prevailing visibility conditions, including any fog, darkness, or reduced visibility due to weather conditions. Adjust your speed accordingly to ensure you can see and be seen by other vessels.
2. Traffic Density: Assess the density of other vessels in the area. If there are many vessels in close proximity, reducing your speed can provide more time to react and avoid potential collisions.
3. Navigational Hazards: Take into account any navigational hazards such as shallow waters, submerged objects, narrow channels, or areas with heavy traffic. Reduce speed in these areas to maintain control and avoid accidents.
4. Weather Conditions: Consider the impact of weather conditions on the vessel's stability and maneuverability. Adjust speed to ensure safe operation in adverse weather conditions such as strong winds, high waves, or currents.
By considering these factors and ensuring that you have enough time to avoid a collision, you can determine a safe operating speed for your vessel. It is important to always operate your vessel at a speed that allows for proper control, situational awareness, and the ability to take appropriate evasive actions when needed.
Thus, the correct option is "d".
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A competitive, profit-maximizing pays its workers a wage of $200 per day and it sells its output for $10 per unit. Determine the marginal product, on a daily basis of the last worker hired.
Answers
The marginal product, on a daily basis of the last worker = $2000
What is a marginal product?Marginal product = Wage of worker * Output sale amount= $200 * $10
= $2000
When one unit of an input, like labour, is added to the current mix of productive variables, the additional output that occurs is known as the marginal product of that input. The marginal product is the marginal physical productivity of an input or factor of production in economics.And especially in neoclassical and engineering economy, it is the change in output that results from using one more unit of a specific input.For example, the change in output when a firm's labour is increased from five to six units, assuming that the quantities of other inputs are kept constant. The slope of the total product curve the production function plotted against labour usage for a constant level of capital input usage represents the marginal product of labour.To learn more about engineering economy, refer:
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Samantha is reviewing an engineer’s résumé for a design project involving equipment for an agricultural firm. What is it that she is looking for in his résumé?
The engineer must have humility.
The engineer must be a civil engineer.
The engineer must have the proper credentials.
The engineer must use materials from the US Green Building Council.
Answers
Answer:
i would say C
Explanation:
Answer:
c
Explanation:
ye
____ lanes give drivers the time and space to reduce their speed to what is posted and/or prepare for the sharpness of the curve
Answers
Exit lanes give drivers an ample time and space to minimize (reduce) their speed to what is posted and prepare them for the sharpness of the curve.
What is a speed limit?A speed limit is the maximum amount of speed that is legally permitted in an area for safety. Hence, this limit must be abided and strictly adhered to by all road users such as drivers of a vehicle.
As a safety precaution, Exit lanes are constructed to give drivers an ample time and space to minimize (reduce) their speed to the required speed limit posted and prepare them for the sharpness of the curve.
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A POTW is being designed to treat 2.5 MGD. Size the grit chamber (calculate the volume-do not specify dimentions).
Answers
A POTW is being designed to treat 2.5 MGD. The volume of the grit chamber is approximately 78,100 gallons.
The grit chamber is designed to remove and separate the solids of a higher density, such as sand, silt, and gravel, from the sewage water. The grit chamber’s volume is estimated based on the sewage flow rate (Q) and the detention time (t) required for settling grit in the chamber.
Using the following formula for calculating the volume of the grit chamber:
V = Q x t x c
Where V is the volume of the grit chamber
Q is the sewage flow rate, which is given as 2.5 MGDt is the detention time required for settling of grit, which is taken as 45 seconds
C is the empirical constant, typically assumed to be 1.5 to 2.0
For the above problem, we can calculate the grit chamber's volume as follows:
V = 2.5 MGD x (45 s / 86400 s/day) x 1.5V = 0.0781 MG or 78,100 gallons
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A POTW or Publicly Owned Treatment Works is a treatment plant that is owned and operated by a state or local government for the purpose of treating municipal wastewater.
A grit chamber is used to remove grit, sand, and other heavy inorganic solids from wastewater before it is treated further. The grit chamber is designed to allow the heavier solids to settle to the bottom while the lighter organic materials continue on to the next stage of treatment.For designing the grit chamber, the following formula is used: Volume of grit chamber (V) = Q × T × GWhere, Q = Design flow rate (MGD)T = Detention time (min)G = Surface overflow rate (ft/min)The given design flow rate is 2.5 MGD.We need to choose an appropriate detention time and surface overflow rate. A detention time of 2-5 minutes is typical for grit chambers. A surface overflow rate of 1-3 ft/min is also typical.Let's assume a detention time of 3 minutes and a surface overflow rate of 2 ft/min.V = 2.5 × 3 × 2 = 15 cubic feetTherefore, the volume of the grit chamber required is 15 cubic feet.
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URGENT NEED HELP BY AN HOUR
C++ ONLY
Given a line of text as input: (1) output the number of characters excluding the three characters commonly used for end-of-sentence punctuation( period, exclamation point, and question mark), (2) then output the number of end-of-sentence punctuation characters that were found. You can just do (1) to pass the first few test cases for partial credit, then do (2) for full credit.
Ex: If the input is "Listen, Sam! Calm down. Please.", the output is:
28
3
Ex: If the input is "What time is it? Time to get a watch! O.K., bye now.", the output is:
43
5
Answers
Using the knowledge in computational language in python it is possible to write a code that output the number of characters excluding the three characters commonly used for end-of-sentence punctuation.
Writting the code:import re
def check_sentence(text):
result = re.search(r"^[A-Z][A-Za-z\s]*[\.\?!]$", text)
return result != None
print(check_sentence("Is this is a sentence?")) # True
print(check_sentence("is this is a sentence?")) # False
print(check_sentence("Hello")) # False
print(check_sentence("1-2-3-GO!")) # False
print(check_sentence("A star is born.")) # True
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Suppose, you are cleaning your reading table and keeping your books one upon another. Your
books are numbered are as 1,2,3,4,5. But you want your books to be ordered in such a way so
that when you pick up the first book and last book, those should be always 3 and 1, respectively.
The rest three books (2, 4 and 5) can be in any order.
Which collection is suitable here? Show its adding and removing methods in operation.
Answers
Answer:
it's answer B. I took the test
a circular opening 3M in diameter in the vertical side of water tank is closed by a disc of 3m diameter which can be rotated about a horizontal diameter.
calculate the force on the disc
the torque required to maintain the disc in the vertical position when the head of water above the horizontal diameter is 4m.
Answers
Note that the force on the disc is 38700 Nand the torque required to maintain the disc in the vertical position is 65550 N m.
How is this so?Force = mass * acceleration due to gravity
= (volume * density) * acceleration due to gravity
= (πr² * height * density) * acceleration due to gravity
= (π * (3/2 m)² * 4 m * 1000 kg/m³) * 9.8 m/s²
Force = 38700 N
Torque = force * distance
= 38700 N * (3/2 m)
Torque = 65550 N m
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The acceleration function of an object doing curvilinear motion is a = {(-0.2)i+2j+1.5k) m/s², where t is in s. If its initial velocity vo 8i m/s, and initial position is at the origin, determine the magnitude of its velocity when t = 3 s.
Answers
To solve this problem, we need to integrate the acceleration function to obtain the velocity function, and then evaluate the magnitude of the velocity at t = 3 s.
The velocity function can be obtained by integrating the acceleration function as follows:
v(t) = ∫a(t)dt
v(t) = ∫((-0.2)i+2j+1.5k)dt
v(t) = (-0.2t)i+(2t)j+(1.5t)k + C
where C is a constant of integration. To determine the value of C, we can use the initial velocity, which is given as vo = 8i m/s when t = 0 s:
v(0) = (-0.2(0))i+(2(0))j+(1.5(0))k + C = 8i
C = 8i
Therefore, the velocity function is:
v(t) = (-0.2t)i+(2t)j+(1.5t)k + 8i
Now, to determine the magnitude of the velocity at t = 3 s, we can simply evaluate the velocity function at t = 3 s and compute its magnitude:
v(3) = (-0.2(3))i+(2(3))j+(1.5(3))k + 8i
v(3) = (-0.6)i+6j+4.5k + 8i
v(3) = 7.4i+6j+4.5k
|v(3)| = sqrt((7.4)^2 + 6^2 + (4.5)^2)
|v(3)| = sqrt(102.41 + 36 + 20.25)
|v(3)| = sqrt(158.66)
|v(3)| ≈ 12.6 m/s (rounded to one decimal place)
Therefore, the magnitude of the velocity when t = 3 s is approximately 12.6 m/s.
Answer:
the magnitude of the velocity when t = 3 s is 10.54 m/s.
Explanation:
To solve this problem, we can use the following kinematic equation that relates velocity, acceleration, and time:
v = vo + at
where:
v = final velocity
vo = initial velocity
a = acceleration
t = time
First, we need to find the velocity of the object at time t = 3 s. To do this, we can substitute the given values into the kinematic equation and solve for v:
v = vo + at
v = 8i + (-0.2i+2j+1.5k) x 3
v = 8i - 0.6i + 6j + 4.5k
v = 7.4i + 6j + 4.5k
The magnitude of the velocity is given by:
|v| = sqrt(vx^2 + vy^2 + vz^2)
where:
vx, vy, vz = the x, y, and z components of the velocity vector
Substituting the values from above, we get:
|v| = sqrt((7.4)^2 + 6^2 + (4.5)^2)
|v| = sqrt(54.81 + 36 + 20.25)
|v| = sqrt(111.06)
|v| = 10.54 m/s (approx)
what is output? new_list = [['abc', 'def'], 10, 20] print(new_list[0]) group of answer choicesA. abcdef B. ['abcdef'] C, ['abc', 'def']D. abc
Answers
The output will be ['abc', 'def'].
The given code creates a new list new_list containing three elements: a nested list ['abc', 'def'], and two integers 10 and 20.
The statement print(new_list[0]) prints the first element of the list, which is ['abc', 'def'].
This is because new_list[0] refers to the first element of new_list, which is the nested list ['abc', 'def'].
Therefore, the output of the code is ['abc', 'def'].
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The volume of microbial culture is observed to increase according to the formula
V(m^3)=e^t
where t is time in seconds
a,calculate the expression for V(in^3) in terms of t(minute)
b,
Answers
The expression of V(m³)=e^(t(s)) to make V in in³ and t in minutes is;
V(in³) = (¹/₆₁₀₂₄)a\(e^{\frac{1}{60}bt(h)\)
We are given that;
Volume of microbial culture is observed to increase according to the formula;
V = e^(t)
where;
t is in seconds
V is in m³
We want to now express V in in³ and t in minutes.
Now, from conversions;
1 m³ = 61024 in³
Also; 1 second = 1/60 minutes
according to formula for exponential decay, we know that;
V = ae^(bt)
Thus, we have;
61024V = ae^(¹/₆₀b(t(h))
V(in³) = (¹/₆₁₀₂₄)a\(e^{\frac{1}{60}bt(h)\)
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pls discuss the concepts in which architectural forms/visuals correlate in the design process
Answers
Answer:
Visual connectivity refers to the tangible aspects of a space; extent to which a place can be viewed from other places. It is believed that the design properties of a spatial layout of an atrium leaves unobstructed views horizontally and vertically.
Explanation:
Which of the following is the most concrete and specific?
Building, White House, Shelter, or House.
Answers
The most concrete and specific term among the options provided is the White House. It refers to a particular building located in Washington, D.C., which serves as the official residence and workplace of the President of the United States. It has a distinct identity, history, and purpose, making it a highly specific and easily identifiable structure.
The White House is a globally recognized symbol of American governance and power. Its specific architectural design, located at 1600 Pennsylvania Avenue, sets it apart from generic buildings or houses. Unlike the terms "building" or "house," which can encompass a wide range of structures, the White House refers to a singular and iconic edifice with a rich historical significance. Its unique purpose as the center of American political leadership makes it the most concrete and specific option among those provided.
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Remembering to lower or block bulldozer and scraper blades, end-loader buckets, dump
bodies, etc., when not in use, and leaving all controls in the neutral position. Would this be
considered protecting yourself or not protecting yourself?
Select the best option
Answers
Answer:
Protecting yourself.
Explanation:
you didn't include answer choices but from the text I would assume remembering to do these things would be actively protecting yourself.
What is the primary goal of political parties in televised presidental debates?
to prove which party is best
to present potential candidates
to establish bipartisan agreements
to explain party platforms to voters
i believe it could be c or d, b is the wrong one edge 22
Answers
The primary goal of political parties in televised presidential debates is to: D. to explain party platforms to voters.
What is a political party?A political party can be defined as an organized group of individuals (people) who presumably share common political ideologies, aims, goals, vision, and strategies on how a country should be governed.
This ultimately implies that, a political party is an organization of people that are sharing similar political ideologies and it provides a platform for a chosen candidate to run as its sole representative in an election category.
In this context, the primary goal of political parties in televised presidential debates is to explain party platforms to the electorates or voters.
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It's D I just took the test
Edge 2023 :)
estimate new endurance limit of bolts after 200000 cycles of the fluctuating load applied, using mansons method based on goodman fatigue criterion
Answers
To estimate the new endurance limit of bolts after 200,000 cycles of a fluctuating load using Manson's method based on the Goodman fatigue criterion, we need the following information:
Original endurance limit (S-N curve): This is the fatigue strength of the bolt at the given number of cycles before any damage occurs.Ultimate tensile strength (UTS): This is the maximum stress that the bolt can withstand before fracturing.
Stress amplitude of the fluctuating load: This is the difference between the maximum and minimum stress levels experienced by the bolt during the cyclic loading.Manson's method assumes that the damage caused by each cycle is cumulative and can be calculated using the Goodman fatigue criterion. The equation to estimate the new endurance limit is:
S' = S / (1 + (N / N0) * (S_amplitude / UTS))
where:
S' is the new endurance limit
S is the original endurance limit
N is the number of cycles (200,000 in this case)
N0 is the reference number of cycles (usually the original endurance limit)
S_amplitude is the stress amplitude of the fluctuating load
UTS is the ultimate tensile strength
By plugging in the values into the equation, you can estimate the new endurance limit of the bolts after 200,000 cycles of the fluctuating load.
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Write down the initial value problem that models the heat transfer in an infinitely long rod. Assume that the rod is exchanging heat with the surrounding medium (convection), the coefficient of convection is k, the heat specific of the rod is 1 , and the initial temperature is given by f(x).
Answers
The initial value problem that models the heat transfer in an infinitely long rod with convection can be represented as follows:
∂u/∂t = k * ∂²u/∂x²
where:
u(t, x) represents the temperature distribution in the rod at time t and position x.
k is the coefficient of convection.
∂u/∂t represents the rate of change of temperature with respect to time.
∂²u/∂x² represents the second derivative of temperature with respect to position, which accounts for the spatial variation of temperature in the rod.
In addition to the partial differential equation, we also need to specify the initial condition:
u(0, x) = f(x)
where:
f(x) represents the initial temperature distribution along the rod at time t=0.
Together, the partial differential equation and the initial condition form the initial value problem that models the heat transfer in the infinitely long rod with convection.
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Problem 3. Consider an enclosed area inside a uranium mine with dimensions of 5 × 4× 3 m3. The walls are emitting Radon-222 at a rate of 0.1 atoms/(cm2·s). a) Derive differential equation describing number of Rn-222 atoms in this enclosed space, considering its emission from the walls, radioactive decay, and ventilation. b) Determine equilibrium concentration of Rn-222 in this space without ventilation in pCi/L. c) What should be air ventilation flow rate in L/s to maintain activity below 5 pCi/L?
Answers
Answer:
B) 430 Pci/L
C) F = 1.05 * 10 ^13 L/s
Explanation:
Given data :
enclosed area dimensions : 5 * 4 * 3 m^3
emission of Radon-22 through walls = 0.1 atoms/(cm^2.s)
first we will have to determine the total surface area of the enclosed area
= 2 lb + 2 bh + 2 lh
= 2( 5*4 ) + 2( 4*3 ) + 2 ( 5*3 ) = 9.4 * 10^5 cm^2
next we determine the production rate ( P )
p = 0.1 atoms/(cm^2.s) * 9.4 * 10^5 cm^2 = 9.4 * 10^5 atoms/s
determine production rate per volume
production rate / space volume = 9.4 * 10^5 / ( 5*4*3 )
= 9.4 * 10^5 / (60 * 10^3) L
= 16 atoms/ L
attached below is the remaining part of the solution
For the following DSB SC AM spectrum, a) Identify the carrier frequency. b) Identify the modulating signal frequency. c) Identify the upper sideband. d) Identify the lower sideband. e) What is the ban
Answers
The answers are:a) Carrier frequency = 5 KHzb) Modulating signal frequency = 2 KHzc) Upper sideband = 7 KHzd) Lower sideband = 3 KHze) Bandwidth = 4 kHz DSB SC AM spectrum For the given DSB-SC AM spectrum, the following points are to be identified.
Carrier frequency: The frequency which is present at the center is known as the carrier frequency. Here, the carrier frequency is located at 5 KHz.b) Modulating signal frequency: Modulating signal is the signal that is being transmitted. It is also known as the baseband signal. The modulating signal frequency is 2 kHz. c) Upper sideband: The upper sideband is located at the frequency range between carrier frequency and twice of modulating signal frequency. Hence, it is at the frequency of (5 + 2) kHz = 7 kHz.
The lower sideband is located at the frequency range between zero and the difference between carrier frequency and twice of modulating signal frequency. Hence, it is at the frequency of (5 - 2) kHz = 3 kHz.e) The band in which the signal is being transmitted is the frequency range between 3 kHz and 7 kHz. Hence, the bandwidth is given as = 7 kHz - 3 kHz = 4 kHz.
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What is the MINIMUM vertical reinforcing steel requirement for a 8" thick masonry foundation wall that is 7' 6" high supporting 6' 6" of unbalanced backfill with a lateral load of 60 psf?
1. #7 at 48" o.c.
2. #6 at 48" o.c.
3. #5 at 48" o.c.
4. #4 at 48" o.c.
Answers
The vertical reinforcing steel requirement for an 8" thick masonry foundation wall that is 7'6" high, supporting 6'6" of unbalanced backfill with a lateral load of 60 psf is #5 at 48" o.c. The correct option is 3.
The minimum vertical reinforcing steel requirement for a foundation wall is determined by the height of the wall, the thickness of the wall, the load on the wall, and the unbalanced backfill. The minimum size and spacing of vertical reinforcing bars in a masonry wall are specified in ACI 530-11/ASCE 5-11/TMS 402-11. The vertical reinforcing steel requirement for a masonry foundation wall is determined by the formula:
A = (0.0025hd) / s where A is the area of vertical reinforcement (\(in^{2} /ft\)), h is the height of the wall (ft), d is the effective thickness of the wall (ft), and s is the spacing of the bars (in).
The minimum area of vertical reinforcement should not be less than 0.0025 times the product of the height and effective thickness of the wall. The minimum spacing of vertical bars is 48 inches or the thickness of the wall, whichever is less.
For an 8" thick wall with a height of 7'6" and a lateral load of 60 psf, the minimum area of vertical reinforcement is:
0.0025 × 7.5 × 0.67 = 0.0126 (\(in^{2} /ft\)).
The minimum size of the vertical bar is #5 (0.162 in2).
Therefore, the minimum number of bars required is:
0.0126 / 0.162 = 0.0777, which is rounded up to 0.08.
Thus, the minimum spacing of vertical bars is 12 / 0.08 = 48 inches. Therefore, the minimum vertical reinforcing steel requirement is #5 at 48 inches o.c., which is option 3.
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Please help
What are saving bonds?
Answers
When planning horizontal cabling, what is the maximum allowable distance that can be used?.
Answers
The * key is used for ____.
Answers
What are the 3 types of irony and examples?.
Answers
The three types of irony are Verbal Irony, Situational Irony, and Dramatic Irony.
Example of Verbal Irony:
When a statement's intended meaning differs from what is actually said, it is said to be verbally ironic.In Shrek, Donkey asks Shrek if he can stay with him. Shrek replies, "Of course," when he really means, "No, not really."Example of Situational Irony:
Situational irony occurs when a situation's conclusion is completely unanticipated. For instance, everyone in Emerald City believes that Oz is strong and impressive in the book The Wonderful Wizard of Oz. Oz, however, turns out to be the exact opposite—an aged guy devoid of any supernatural abilities.Example of Dramatic Irony:
Dramatic irony occurs when characters are unaware of information that the audience is aware of.When the readers are aware that a deadly shark is present in the water but the carefree beachgoers are unaware that they are being pursued.What is Irony?
When something unexpected occurs, it is ironic. The thing opposite to what we anticipate usually occurs, and this is either humorous or dramatic.
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The output diodes in an alternator are mounted to which of these components?Choose matching definition
Housing
Increases
Impeller
Stator
Answers
The output diodes in an alternator are mounted to the stator. The Option D.
What is the output diodes all about?The output diodes in an alternator are responsible for converting the alternating current (AC) generated by the alternator into direct current (DC), which is used to power the electrical systems in a vehicle.
These diodes are typically mounted to the stator, which is one of the main components of the alternator. The stator is a stationary component that consists of a series of wire coils that surround the rotor, which rotates inside the stator to generate AC power.
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A tank contains hydrogen gas at atmospheric conditions of 25°C and 90 kPa. The pipe connecting the tank to the outside is located at the top of the equipment with an internal diameter of 3 cm and a length of 8 cm. If the pipe is left open so that both hydrogen and air experience equimolar counterdiffusion, determine the mass flow of hydrogen lost to the atmosphere. (Dab = 7.2 ∗ 10-5m3/s) Molar mass of hydrogen = 2 Kg/Kmol.
Answers
About 4.06 nanograms of hydrogen are lost to the atmosphere on a mass flow basis every second.
How does hydrogen that is released into the atmosphere fare?Hydrogen in the upper atmosphere may chill and damp the stratosphere, delaying the regrowth of the ozone layer. Hydrogen may expedite the accumulation of the greenhouse gases methane and ozone in the lower atmosphere, which would contribute to climate change.
This equation can be used to determine the mass flow rate of hydrogen via the pipe:
m_dot = ρ * A * Dab * (C1 - C2)
The ideal gas law can be used to determine hydrogen's density in the atmosphere: ρ = P/(R*T)
Inputting the values provided yields:
ρ = (90 kPa * 1000 Pa/kPa)/(8.314 J/mol/K * 298 K) = 0.0379 kg/m3
The diameter of the pipe can be used to compute the cross-sectional area:
A = π/4 * (0.03 m)^2 = 7.07E-4 m2
The ideal gas law determines the amount of hydrogen in the tank:
C1 = P1/(R*T1)
We can assume that P1 = P and T1 = T because the tank is filled with pure hydrogen. Inputting the values provided yields:
C1 = (90 kPa * 1000 Pa/kPa)/(8.314 J/mol/K * 298 K) = 0.00380 kmol/m3
It is safe to presume that there is no hydrogen present in the atmosphere outside of the pipe.
Finally, by entering each value into the mass flow rate equation, we may obtain:
m_dot = 0.0379 kg/m3 * 7.07E-4 m2 * 7.2E-5 m3/s * (0.00380 kmol/m3 - 0 kmol/m3) * 2 kg/kmol = 4.06E-9 kg/s
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The load is 200g and is 5' away from
the fulcrum, what is the mechanical
advantage and how many newtons of
force needed to lift the load?
Answers
Answer:
In 1st class levers, the fulcrum is always between the effort force and the load. It may or may not provide a mechanical advantage, depending on the location.
Explanation:
When pole vaulting, a pole achieves a minimum radius of curvature estimated to be 5. 0 m. The pole has an OD of 40 mm and an ID of 15 mm and is made of fiberglass with an of E= 69 GPa and a yield stress of 3 GPa
Answers
a. The max strain develop in the pole at bmax/E = ymax / R
b. The value of the max strain is 4 × 10^-3
c. The max stress at this same location is 276mpa.
d. The factor of safety with this stress is 10.86.
What is Max strain?Max strain, or the Point of Breakdown (POB), refers to the greatest degree of deformity that a material can be subject to, prior to enduring permanent damage. Strain stands as a signal of an item's alteration in shape under pressure, and is generally shown as a percentage or decimal rate compared to the material's initial size.
The utmost strain an object is able to sustain is contingent upon its mechanical characterstics such as ultimate strength, yield strength, and ductility. These properties are impacted by dynamics including the material's elements, microstructure, and processing chronicle.
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A substance is malleable, conducts heat, and is used in wiring. How would we classify this substance?.
Answers
A substance that is malleable, conducts heat, and is used in wiring would be classified as a metal.
The properties of a substance.In Science, some examples of the mechanical and physical properties of substances used in the construction of buildings include the following:
DensityConductivityResistivityElasticity/stiffnessCorrosionDuctility/malleabilityFractureWhat is conduction?Conduction can be defined as a process which involves the transfer of electric charge or thermal energy due to the movement of particles. Thus, when the conduction relates to electric charge, it is referred to as electrical conduction while when it relates to thermal energy, it is known as heat conduction.
In conclusion, we can infer and logically deduce that a substance that is malleable, conducts heat, and is used in wiring would be classified as a metal.
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Knowing that the central portion of the link BD has a uniform cross-sectional area of 800 2, determine the magnitude of the load P for which the normal stress in that portion of BD is 50 .
Answers
Answer: 50
Explanation: