Assume the processor comes equipped with a normally closed fault relay contact output designed to open when a processor malfunction is detected. This contact would be:?
hardwired in series with the emergency stop button.
hardwired in parallel with the emergency stop button.
programmed as part of the master control reset instruction.
programmed as part of the zone control last state instruction.
Answers
The contact would be hardwired in series with the emergency stop button.
This configuration ensures that if the fault relay contact opens due to a processor malfunction, the emergency stop button will also open the circuit, halting the operation of the machinery. This provides an additional layer of safety in case the fault relay contact fails to function properly or is bypassed.
Hardwiring the contact in parallel with the emergency stop button could lead to unintended operation of the machinery, as the emergency stop button may not be able to override the malfunctioning processor.
Programming the fault relay contact as part of the master control reset or zone control last state instruction would not provide the necessary fail-safe mechanism for halting machinery in the event of a processor malfunction.
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Related Questions
Compare automation and autonomous
Answers
Answer:
Automation generally means “a process performed without human assistance”, while autonomy implies “satisfactory performance under significant uncertainties in the environment and the ability to compensate for system failures without external intervention [emphasis mine].”
Explanation:
Which electrode uses a whip technique and why
Answers
Answer:
STICK SKILL DRILL...
Explanation:
The skill drill uses a Whip and Pause technique.The reason for whip and pause is that 6010 electrodes are fast freezing electrodes and the momentary whips allow the puddle to solidify a bit ..Length of Art..Too long an arc causes problems so try to keep the arc equal to or shorter than diameter of electrode.
lease write a calculator program in java using the javafx libraries as we discussed in class. at a minimum, your calculator should handle addition, subtraction, multiplication and division of integer numbers. so basically you should be able to input a number, click an operation ( - * /) button, then enter another number and hit
Answers
The calculator program will be:
import java.util.HashMap;
import java.util.Map;
public class JavafxCalculator extends Application {
private static final String[][] template = { { "7", "8", "9", "/" }, { "4", "5", "6", "*" }, { "1", "2", "3", "-" },
{ "0", "c", "=", "+" } };
private final Map<String, Button> buttons = new HashMap<>();
private DoubleProperty stackValue = new SimpleDoubleProperty();
private DoubleProperty value = new SimpleDoubleProperty();
private enum Operation {
NOOPERATION, ADDITION, SUBTRACTION, MULTIPLICATION, DIVISON
What is a program?A computer program is the sequence or set of instructions in a programming language for a computer to execute.
It should be noted that computer programs are one component of software. In this case, the program is illustrated above.
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An airline ticket counter forecasts that 220 people per hour will need to check in. It takes an average of 2 minutes to service a customer. Assume that arrivals are poisson distributed and service times exponentially distributed and that customers wait in a single queue for the first available agent.
a) If we want the average time a customer spends in the queue and in service to be 10 minutes or less, how many ticket agents should be on duty?
b) There airline wants to minimize the cost of idle ticket agents and the cost of customers waiting in the queue. The salary of a ticket agent is £12 per hour and the cost of a customer waiting in the queue is £5 per customer per hour. How many ticket agents should be on duty?
Answers
A) Number of agents required to achieve a wait time of 10 minutes or less = 8 agents
B) The number of agents required on duty to reduce cost = 9 agents
Given data :
Arrival rate of customers ( β ) = 220 per hour
Service rate ( mu ) = 60 minutes / 2 minutes = 30 customer per hour
utilization ( rho ) = 220 / 30 ≈ 7
at least 8 server personnel are required for stability of the queue
A) Determine the number of agents required to achieve a wait time of 10 minutes or less per customer
waiting time = 10 - 2 = 8 minutes
number of customers waiting ( ∝ ) = 7 and required server = 8
assuming Lq = 5.2266
Hence the waiting time in line = Lq / arrival rate
= 5.2266 / 220 = 0.0238 hour
= 0.0238 * 60 = 1.428 minutes
Since the waiting time ( 1.428 minutes ) is less than the original waiting time ( 2 minutes ) the number of agents that will achieve a wait time of 10 minutes or less is = 8 agents
B) Determine the number of ticket agents that should be on duty to minimize cost
salary of ticket agent = £12 per hour
cost of customer waiting in queue = £5 per hour per customer
i) When 8 agents are used
waiting time of customers = 0.0238 * 220 = 5.236
waiting cost for customers = 5.236 * 5 = £26.18
employee cost = 8 * 12 = £96
∴ Total cost = 96 + 26.18
= £ 122.18
ii) When 9 agents are used
waiting time for customers = 0.0074 * 220 = 1.628
Wq = 1.6367 / 220 = 0.0074
waiting cost for customers = 1.6367 * 5 = £ 8.1835
assuming Lq = 1.6367
employee cost = 9 * 12 = £ 108
∴ Total cost = 108 + 8.1835 = £ 116.18
From the calculations in ( i ) and ( ii ) the Ideal number of ticket agents that should be on duty to minimize cost should be 9 agents.
Hence we can conclude that A) Number of agents required to achieve a wait time of 10 minutes or less = 8 agents and The number of agents required on duty to reduce cost = 9 agents.
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1. Asbestos can be dangerous but is not a known carcinogen.
A) O True
B) O False
Answers
Asbestos may cause cancer by inhalation. Moreover, asbestos is also known to cause different respiratory diseases (especially asbestosis) by affecting the mucosa of the bronchi.
The statement "Asbestos can be dangerous but is not a known carcinogen" is FALSE.Asbestos is a group of materials that were widely used in building constructions until 1990.Asbestos is a toxic substance that may cause mesothelioma and lung cancer.Mesothelioma is a type of cancer that develops on the outer surface that covers different internal organs.Moreover, asbestosis is a chronic disease in the lungs caused by long-term exposure to asbestos.Learn more in:
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Answer:
False
Explanation:
A lake with a surface area of 525 acres was monitored over a period of time. During onemonth period the inflow was 30 cfs (ie. ft3 /sec), the outflow was 27 cfs, and a 1.5 in seepage loss was measured. During the same month, the total precipitation was 4.25 inches. Evaporation loss was estimated as 6 inches. Estimate the storage change for this lake during the month.
Answers
Answer:
The storage of the lake has increased in \(4.58\times 10^{6}\) cubic feet during the month.
Explanation:
We must estimate the monthly storage change of the lake by considering inflows, outflows, seepage and evaporation losses and precipitation. That is:
\(\Delta V_{storage} = V_{inflow} -V_{outflow}-V_{seepage}-V_{evaporation}+V_{precipitation}\)
Where \(\Delta V_{storage}\) is the monthly storage change of the lake, measured in cubic feet.
Monthly inflow
\(V_{inflow} = \left(30\,\frac{ft^{3}}{s} \right)\cdot \left(3600\,\frac{s}{h} \right)\cdot \left(24\,\frac{h}{day} \right)\cdot (30\,days)\)
\(V_{inflow} = 77.76\times 10^{6}\,ft^{3}\)
Monthly outflow
\(V_{outflow} = \left(27\,\frac{ft^{3}}{s} \right)\cdot \left(3600\,\frac{s}{h} \right)\cdot \left(24\,\frac{h}{day} \right)\cdot (30\,days)\)
\(V_{outflow} = 66.98\times 10^{6}\,ft^{3}\)
Seepage losses
\(V_{seepage} = s_{seepage}\cdot A_{lake}\)
Where:
\(s_{seepage}\) - Seepage length loss, measured in feet.
\(A_{lake}\) - Surface area of the lake, measured in square feet.
If we know that \(s_{seepage} = 1.5\,in\) and \(A_{lake} = 525\,acres\), then:
\(V_{seepage} = (1.5\,in)\cdot \left(\frac{1}{12}\,\frac{ft}{in} \right)\cdot (525\,acres)\cdot \left(43560\,\frac{ft^{2}}{acre} \right)\)
\(V_{seepage} = 2.86\times 10^{6}\,ft^{3}\)
Evaporation losses
\(V_{evaporation} = s_{evaporation}\cdot A_{lake}\)
Where:
\(s_{evaporation}\) - Evaporation length loss, measured in feet.
\(A_{lake}\) - Surface area of the lake, measured in square feet.
If we know that \(s_{evaporation} = 6\,in\) and \(A_{lake} = 525\,acres\), then:
\(V_{evaporation} = (6\,in)\cdot \left(\frac{1}{12}\,\frac{ft}{in} \right)\cdot (525\,acres)\cdot \left(43560\,\frac{ft^{2}}{acre} \right)\)
\(V_{evaporation} = 11.44\times 10^{6}\,ft^{3}\)
Precipitation
\(V_{precipitation} = s_{precipitation}\cdot A_{lake}\)
Where:
\(s_{precipitation}\) - Precipitation length gain, measured in feet.
\(A_{lake}\) - Surface area of the lake, measured in square feet.
If we know that \(s_{precipitation} = 4.25\,in\) and \(A_{lake} = 525\,acres\), then:
\(V_{precipitation} = (4.25\,in)\cdot \left(\frac{1}{12}\,\frac{ft}{in} \right)\cdot (525\,acres)\cdot \left(43560\,\frac{ft^{2}}{acre} \right)\)
\(V_{precipitation} = 8.10\times 10^{6}\,ft^{3}\)
Finally, we estimate the storage change of the lake during the month:
\(\Delta V_{storage} = 77.76\times 10^{6}\,ft^{3}-66.98\times 10^{6}\,ft^{3}-2.86\times 10^{6}\,ft^{3}-11.44\times 10^{6}\,ft^{3}+8.10\times 10^{6}\,ft^{3}\)
\(\Delta V_{storage} = 4.58\times 10^{6}\,ft^{3}\)
The storage of the lake has increased in \(4.58\times 10^{6}\) cubic feet during the month.
The volume of water gained and the loss of water through flow,
seepage, precipitation and evaporation gives the storage change.
Response:
The storage change for the lake in a month is 1,582,823.123 ft.³How can the given information be used to calculate the storage change?Given parameters:
Area of the lake = 525 acres
Inflow = 30 ft.³/s
Outflow = 27 ft.³/s
Seepage loss = 1.5 in. = 0.125 ft.
Total precipitation = 4.25 inches
Evaporator loss = 6 inches
Number of seconds in a month is found as follows;
\(30 \ days/month \times \dfrac{24 \ hours }{day} \times \dfrac{60 \, minutes}{Hour} \times \dfrac{60 \, seconds}{Minute} = 2592000 \, seconds\)
Number of seconds in a month = 2592000 s.
Volume change due to flow, \(V_{fl}\) = (30 ft.³/s - 27 ft.³/s) × 2592000 s = 7776000 ft.³
1 acre = 43560 ft.²
Therefore;
525 acres = 525 × 43560 ft.² = 2.2869 × 10⁷ ft.²
Volume of water in seepage loss, \(V_s\) = 0.125 ft. × 2.2869 × 10⁷ ft.² = 2,858,625 ft.³
Volume gained due to precipitation, \(V_p\) = 0.354167 ft. × 2.2869 × 10⁷ ft.² = 8,099,445.123 ft.³
Volume evaporation loss, \(V_e\) = 0.5 ft. × 2.2869 × 10⁷ ft.² = 11,434,500 ft.³
\(Storage \, change \, \Delta V = \mathbf{V_{fl} - V_s + V_p - V_e}\)Which gives;
ΔV = 7776000 - 2858625 + 8099445.123 - 11434500 = 1582823.123
The storage change, ΔV = 1,582,823.123 ft.³Learn more about water resources and hydrology here:
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technician A says that a power balance test is a good way to narrow a misfire down to a particular cylinder(s). technician B says that a cylinder power balance test measures the volumetric efficiency of the cylinder being tested
Answers
Answer: Technician B.
Explanation: Please vote brainliest.
explain the working principles of a rotary engine
Answers
Answer:
The rotary engine works on the same basic principle as the piston engine: combustion in the power plant releases energy to power the vehicle. However, the delivery system in the rotary engine is wholly unique. The piston engine performs four key operations: intake, compression, combustion, and exhaust.
Explanation:
Why is it nearly impossible to obtain satisfactory performance from a shunt motor connected to an ac power source
Answers
Answer:
Because the shunt winding consist of a large number of turns,
Explanation:
It is nearly impossible to obtain satisfactory performance from a shunt motor connected to an ac power source because the shunt winding consist of a large number of turns, due to the high number of turns that the DC shunt motor has it develops a high impedance when connected to an ac power source. and due to this high impedance the amount of current that flows through the field will be very low making it nearly impossible for the shunt motor to operate properly
Does anyone know the answer to this
Answers
Answer:
A
Explanation:
Answer:
A
Explanation:
The fuse breaks the circuit if a fault in an appliance causes too much current to flow. The fuse contains a piece of wire that melts easily. If the current going through the fuse is too great,the wire heats up until it melts and breaks the circuit
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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6. the color code of a resistor (from band 1 through band 4) is brown-black-orange-gold. what is the approximate value of the resistor? group of answer choices 100 kohm 100 ohms 10 kohms 1 kohm
Answers
The color code of a resistor (from band 1 through band 4) is brown-black-orange-gold. The approximate value of the resistor is 10 kohms (10,000 ohms). Therefore the correct option is option C.
The first band denotes the first digit of the resistance value, the second band is the second digit of the resistance value, the third band is the number of zeros in the resistance value, and the fourth band is the tolerance value.
The formula for calculating the resistance value of a resistor is given as, R = AB × 10^C± D Where, A = First digit of the resistance value B = Second digit of the resistance value C = Number of zeros in the resistance value D = Tolerance value
If we use the given color code of the resistor (brown-black-orange-gold), we get the following values: A = 1B = 0C = 1 (number of zeros = 3)D = ± 5%Now, applying the formula of resistance, we get,
R = AB × 10^C= 10 × 10^3= 10,000 ohms or 10 kohms (since 1 kohm = 1000 ohms) Therefore, the approximate value of the resistor is 10 kohms (10,000 ohms). Therefore the correct option is option C.
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Manufacturing
Which of the following is a type of PPE used for fall protection?
A. Floor guards
B. Chest Harness
C. Bucket truck
D. Scaffolding
Answers
Answer: B. Chest Harness
Explanation: Safety belts, lifelines, lanyards, and chest harness are all things necessary. The answer to your question is chest harness. Without the chest harness, think about what would happen if someone were to fall. I hope I've helped!
what is the dimensions of beta
Answers
Answer:
byee byee bbbbbbbbbbbb
In the engineering design and prototyping process, what is the advantage of drawings and symbols over written descriptions?
Answers
The advantages that can be associated to
drawings and symbols over written descriptions in engineering design and prototyping process are;
Communicate design ideas as well as technical information to engineers.
Symbols and drawings can be universal which means it is easy to interpret any where by professionals.
An engineering drawing serves as complex dimensional object and symbol use by engineer to communicate.Drawings and symbols makes it easier to communicate design ideas and technical information to engineers and and how the process will go.Therefore, drawings and symbols is universal to all engineer unlike written one.
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how does the 3d model you created compare with what you would expect based on your observations of the simulated mechanisms from the previous activity, including pulley rotation direction, number of rotations made by each of the two pulleys, and limitations of the cad model? pulley mechanism
Answers
The limitations of the CAD model need to be considered when comparing the two mechanisms. Pulley mechanism: A pulley mechanism is a type of mechanical device that uses a wheel with a groove along its edge to move a rope or cable.
The rope or cable is inserted into the groove, and the wheel is rotated. As the wheel rotates, it causes the rope or cable to move. This can be used to lift or move objects.To create a 3D model of a pulley mechanism, one must first understand how the mechanism works. This includes understanding the direction of rotation of the pulley and the number of rotations made by each of the two pulleys. The 3D model should accurately represent these characteristics of the mechanism.The limitations of the CAD model should also be taken into account when comparing the 3D model to the simulated mechanism from the previous activity.
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In this problem, you should write one function named two_words. This function should accept one parameter, which you can assume will be a list with one or more strings in it, each being a word. Using a for-loop, the function should determine the word that would come first and last in the alphabet from the list of words. The function should return these two words concatenated together, with one space in-between. The alphabetically0earlier word should be first.
A few examples:
The function call two_words(['tree', 'forest', 'antelope', 'zebra'])
should return the string 'antelope zebra'.
The function call two_words(['zoo', 'champion', 'fetch', 'those', 'lemurs'])
should return the string 'champion zoo'.
Answers
The function implementation is: def two_words(words): first_word = words[0] last_word = words[0] for word in words: if word < first_word: first_word = word if word > last_word: last_word = word return first_word + ' ' + last_word
The given problem asks to write a function named two_words that should accept a list of words. The function should determine the word that would come first and last in the alphabet from the list of words using a for-loop. The function should return these two words concatenated together, with one space in-between.
The alphabetically earlier word should be first. Following is the implementation of the function two_words() which takes a list of words and returns the first and last words in alphabetical order.
The function implementation is given below:
def two_words(words): first_word = words[0] last_word = words[0] for word in words: if word < first_word: first_word = word if word > last_word: last_word = word return first_word + ' ' + last_word
When this function is called with two_words (['tree', 'forest', 'antelope', 'zebra']), it returns 'antelope zebra'.
Similarly, two_words(['zoo', 'champion', 'fetch', 'those', 'lemurs']) returns 'champion zoo'.
Now let's discuss the implementation of the function. The function takes a list of words as an argument. It initializes first_word and last_word to the first word in the list. It then iterates over all the words in the list using a for loop. If any word is less than the first_word, it updates the value of first_word. Similarly, if any word is greater than the last_word, it updates the value of last_word. Finally, the function returns the concatenation of first_word, space, and last_word.
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Students would like to sell cold drinks to raise money for a field trip. They need to keep the drinks cold for 3 hours at the ball game. Which step of the engineering design process are the students at?
Answers
Answer:
Problem definition
Explanation:
The engineering design is a series of step that the engineer gradually take in other to create a functioning product or process. There are many different models of the engineering design process , but they can be shrunk into four basic steps which are
problem definition conceptual designpreliminary designdetailed designdesign communication.The students are within the first step, and the problem here is 'an appropriate means for the students to keep their drinks cold, for 3 hours for the ball game.'
Describe some of the applications of device boxes. Discuss selection of the appropriate box for a given application.
Answers
Device boxes are used to house wiring devices such as switches or outlets. Gangable device boxes offer the option of constructing a box to hold two or more devices. Plaster ears allow box to be used in “rework” applications.
What are outlet boxes?A junction box (sometimes known as a "box") is an enclosure that houses electrical connections. Junction boxes safeguard electrical connections from the elements while also shielding individuals from electric shocks.
A 4-inch square box (either metal or sturdy plastic) is the usual box used for junctions because it provides enough area for establishing wire connections with several wires or cables. But other types of boxes can also be utilized for this use.
A power strip is a collection of electrical sockets that connect to the end of a flexible wire (usually with a mains connector on the other end), allowing several electrical devices to be powered from a single socket.
Therefore,Device boxes are used to house wiring devices such as switches or outlets.
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Leah's Toys makes rubber balls. The current process is capable of producing balls that weigh, on average, 2.5 ounces, with a standard deviation of 0.34 ounces. a. The upper and lower tolerance limits are 2.9 ounces and 2.1 ounces respectively. The process capability ratio is 392 . (Enter your response rounded to three decimal places.) Leah's capable of meeting the tolerance limits 99.7% of the time. b. In order to exactly meet the tolerance limits 99.7% of the time, Leah's Toys would need to reduce the standard deviation to olices. (Enter your response rounded to two decimal places.) c. Suppose Leah's ioys invests in process improvements that lower the standard deviation to just 0.13 ounces. This en gh for Leah's to achieve Six Sigma quality levels with regard to the weight of the balls, because a new process capat y ratio is (Enter your response rounded to three decimal places.)
Answers
Let's take this step by step.
a. The process capability ratio is given as Cp = 392. However, I believe there may be a misunderstanding or typo in the original question. Process capability ratio typically falls within the range 0-3. The formula for the process capability ratio (Cp) is:
Cp = (USL - LSL) / (6σ)
Where:
- USL is the upper specification limit (in this case, 2.9 ounces)
- LSL is the lower specification limit (in this case, 2.1 ounces)
- σ is the standard deviation (in this case, 0.34 ounces)
Let's recalculate the Cp given these inputs:
Cp = (2.9 - 2.1) / (6 * 0.34) = 0.800
This indicates that Leah's Toys' process is currently capable of producing balls within the tolerance limits about 80% of the time, assuming a normal distribution of weights. There may be a misunderstanding with the provided Cp of 392.
b. If Leah's Toys wants to meet the tolerance limits 99.7% of the time, then they would need to reduce the standard deviation such that the output falls within +/- 3σ (3 standard deviations from the mean). This is also known as achieving a "Six Sigma" level of quality.
We can rearrange the Cp equation to solve for σ:
σ = (USL - LSL) / (6 * Cp)
Assuming a Cp of 1.0 (which represents a process that meets tolerance limits 99.73% of the time under a normal distribution), we find:
σ = (2.9 - 2.1) / (6 * 1.0) = 0.13 ounces
This is the standard deviation Leah's Toys would need to achieve to meet the tolerance limits 99.7% of the time.
c. If Leah's Toys invests in process improvements and lowers the standard deviation to 0.13 ounces, then the new process capability ratio (Cp) would be:
Cp = (2.9 - 2.1) / (6 * 0.13) = 1.026
This means Leah's Toys could achieve Six Sigma quality levels (99.7% of products within specification limits) with this new standard deviation. Six Sigma is often represented by a Cp or Cpk (which takes into account mean shift) of 1.5 or more, but in a perfect process centered between the limits, a Cp of 1.0 represents 99.73% within limits, which aligns with your 99.7% target.
How do guest room hotel smoke alarms work and differ then regular home versions?
Answers
Answer: As to the more sophisticated way of detecting "smoke" from an object a human may use in hotel rooms, this sensor called a Fresh Air Sensor does not just detect and, and but alerts the management about a smoking incident in a hotel room
Select the correct answer.
Dr. Ronny wants to measure small distances. Which device should he use?
OA.
altimeter
OB.
laser micrometer
piezoelectric gauge
OD.
thermometer
O E.
dialyzer
Answers
Answer:
Lazermicrometer 100%
Explanation:
Answer:
laser micrometer
Explanation:
Find the resultant of the force system on the body OABC as shown .find the points where the resultant will cut the X and Y axis?
Answers
Explanation:
the resultant force =
\( \sqrt{} {x}^{2} + {y}^{2} \)
A resultant force is the single force and corresponding torque that are produced when adding vectors to a system of forces and torques acting on a rigid body.
What are the resultant of the force system on the body?R = A + B. Instance 2 To create the resulting vector, two vectors facing the opposite direction are subtracted from one another. Here, the vector B is pointing in the opposite direction of the vector A, and the resulting vector is called R.
A force system is a group of forces that interact at specific locations (may also include couples). Therefore, the collection of forces shown on any free body diagram is a force system. A group of forces is simply referred to as a force system.
Therefore, When an item is under the influence of two or more forces, the combined force can be calculated by adding up the separate forces.
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Exactly 5. 00 mL aliquots of a solution containing Phenobarbital were measured into 50. 00ml volumetric flasks and made basic with KOH.
The following volumes of a standard solution of Phenobarbital containing 2. 00 µg/ml of Phenobarbital were then introduced into each flask and the mixture was diluted to volume: 0. 00, 0. 500,1. 000, 1. 50, and 2. 00ml.
The fluorescence of each of these solutions was measured with a fluorometer, which gave volumes of 3. 26, 4. 80, 6. 41, 8. 02, and 9. 56 respectively.
(a) Pot the data.
(b) Using the plot from (a) calculate the concentration of Phenobarbital in the unknown.
(c) Derive a least-squares equation for the data.
(d) Find the concentration of Phenobarbital from the equation in (c)
(e) Calculate a standard deviation for the concentration obtained in (d)
Answers
The data can be plotted as a standard curve. The concentration of Phenobarbital in the unknown can be determined by finding the point on the curve where the fluorescence of the solution intersects the x-axis.
Pot the dataa) The data is plotted in form of a standard curve, which is a graph of the fluorescence of the solutions versus the volume of the standard solution added.
Using the plot from (a) calculate the concentration of Phenobarbital in the unknown.b) By drawing a line of best fit through the data points, we can find the point where the line intersects the x-axis, the x-intercept, which will give us the concentration of phenobarbital in the unknown.
Derive a least-squares equation for the data.c) The least-squares equation is a mathematical representation of the line of best fit. It is used to find the relationship between two variables by minimizing the sum of the squared residuals between the data points and the line.
Find the concentration of Phenobarbital from the equation in (c)d) Using the equation obtained in c), we can calculate the concentration of phenobarbital in the unknown.
Calculate a standard deviation for the concentration obtained in (d)e) By using the residuals of the line of best fit, we can calculate the standard deviation of the concentration obtained in d). This will give us an idea of how much the concentration of phenobarbital in the unknown deviates from the actual value.
The least-squares equation can be found by fitting a line to the data points. The concentration of Phenobarbital can then be determined using this equation. The standard deviation for the concentration can be calculated using the residuals from the line of best fit.
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look told you i made it a meme
Answers
Answer:
Dam they be thinking we racist
Explanation:
Answer:
XDDDD
Explanation:
XD I LOVE THIS MEME IM SAVING THIS TO MY GALLERY XD
Write a Python function with the following prototype:
def drawPyramid(rows)
This function accepts a number from 1 to 26 inclusive and draws a letter
pyramid with the first row starting with the character 'a'. Subsequent rows contain 2 more characters than the previous row such that the middle character in each row increases by 1.
Also, each row begins with the letter 'a' and increases by 1 for each column until the middle
character is reached at which point, the characters decrease until they end with
the character 'a'.
Also, each row displays spaces so that the pyramid appears as an isoscelles triangle.
The first row will contain row - 1 spaces, the second row will contain row - 2 spaces,
etc.
# For example, when rows = 3 the pyramid looks like:
a
aba
abcba
# For example, when rows = 10 the pyramid looks like:
a
aba
abcba
abcdcba
abcdedcba
abcdefedcba
abcdefgfedcba
abcdefghgfedcba
abcdefghihgfedcba
abcdefghijihgfedcba
NOTE: Consider using string.ascii_lowercase, string slices [ : ], string repetition operator *,
and the join( ) function to accomplish your solution.
Your solution may ONLY use the python modules listed below
import math
import random
import string
import collections
import datetime
import re
import time
import copy
def drawPyramid(rows) :
# your code here...
def main( ) :
drawPyramid(5)
drawPyramid(3)
Answers
Here is the Python function which accepts a number from 1 to 26 inclusive and draws a letter pyramid with the first row starting with the character 'a'. The subsequent rows contain two more characters than the previous row such that the middle character in each row increases by
1. Each row begins with the letter 'a' and increases by 1 for each column until the middle character is reached at which point, the characters decrease until they end with the character 'a'. Also, each row displays spaces so that the pyramid appears as an isosceles triangle.
def drawPyramid(rows): # rows variable will store the number of rows for i in range(rows): # to display the characters till the middle of the row # here, chr function will convert the ASCII value to its character.
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Can I have free money? I want to get a new pc
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Answer:
NO!
Explanation:
Why does the ceramic made from Thorium and Oxygen have the chemical ratio of 2 oxygen atoms to every thorium atom (ThO2)
Answers
Which type of structure is usually found under grass sod? Platy Blocky Prismatic Granular
Answers
Out of Platy Blocky Prismatic Granular, the type of structure usually found under grass sod is platy structure.
Soil structure refers to the arrangement of soil particles into aggregates or clumps. It is an essential characteristic of soil that affects its fertility, drainage, and root penetration. Various types of soil structures can exist, including platy, blocky, prismatic, and granular.
Platy structure is characterized by thin, flat layers or plates that are horizontally oriented. This structure is commonly found in compacted or poorly drained soils. The flat plates inhibit water infiltration and root development, making it less favorable for plant growth. Platy structure can result from compaction due to heavy foot traffic or the use of heavy machinery.
On the other hand, blocky, prismatic, and granular structures are more desirable for healthy plant growth. Blocky structure consists of irregular, block-like aggregates, while prismatic structure forms vertically elongated columns or columns with flat tops. Granular structure is characterized by the formation of small, rounded aggregates. These structures promote better water movement, root penetration, and nutrient exchange within the soil, making them ideal for supporting healthy grass growth.
In summary, while platy structure is typically found under grass sod in compacted or poorly drained soils, blocky, prismatic, or granular structures are more favorable for optimal plant growth and healthy turf.
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(viii) A capacitor of0.02 4F is larger than
(a 0.000020 F
(b) 200,000 pF
(c) 2,000 pF
(d) all of the above
Answers
Answer:
Answer is. (d) all of the above
Answer:
my answer is D
Explanation:
all of the above