a food freezer is to produce a 4.5-kw cooling effect, and its cop is 1.3. how many kw of power will this refrigerator require for operation?
Answers
3.5 kw of power will this refrigerator require for operation.
What is refrigerator?
A refrigerator, also known as a fridge, is a commercial and residential appliance that consists of a thermally insulated compartment as well as a heat pump (mechanical, electronic, or chemical) that transfers heat from its interior to its exterior environment, allowing the interior to be cooled to temperatures below room temperature. Refrigeration is a necessary food storage technique all over the world. Because a lower temperature slows the rate of bacteria reproduction, a refrigerator minimises the rate of spoiling. A refrigerator retains water at a temperature just above freezing.
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Assume that 50,000 yd3 of the soil from a local borrow pit in Rhode Island, with a water content of 13% and dry unit weight of 87 pcf, is to be delivered to a construction site for some repairs of highway in I-95. By the time it reaches the site, the water content is 9%. It will be compacted to a minimum of 90% of the modified Proctor maximum dry density. Determine the total amount of water (in pounds), that must be added to the soil to increase the moisture content to the optimum level. Assume a Gs
Answers
Answer:3000 yd3
Explanation:
so i got the 50000 divided it by 100 times that by 13 and got 4500 yd3
so now the soil is at 9 so i need to get the 4 percent back up so i yet again got 50000 yd3 and divided by 100 and times it by 9 to get 1500 yd3 to then minus my 1500 and 4500 yd3 and got 3000 yd3 i hope it is right.
The Boeing 787 Dreamliner is billed to be 20% more fuel efficient than the comparable Boeing 767 and will fly at Mach 0.85. The midsize Boeing 767 has a range of 12,000 km, a fuel capacity of 90,000 L, and flies at Mach 0.80. For Boeing 787, assume the speed of sound is 700 mph and calculate the projected volumetric flow rate of fuel for each of the two Dreamliner engines in m3/s.
Answers
Answer:
the projected volumetric flow rate of fuel for each of the two Dreamliner engines is 0.005 m³/s
Explanation:
Given the data in the question;
First we determine the fuel economy of Boeing 767
Range = 12,000 km
fuel capacity = 90,000 L
so, fuel economy of Boeing 767 will be
η\(_f\) = Range / fuel capacity
η\(_f\) = ( 12,000 km / 90000 L ) ( 1000m / 1 km) ( 3.7854 L/gal × 264.2 gal/m² )
η\(_f\) = 133,347.024 m/m³
Now, Boeing 787 is 20% more fuel efficient than Boeing 767
so fuel economy of Boeing 787 will be;
⇒ (1 - 20%) × fuel economy of Boeing 767
⇒ (1 - 0.2) × 133,347.024 m/m³
⇒ 0.8 × 133,347.024 m/m³
⇒ 106,677.6 m/m³
Hence, fuel economy of Boeing 787 dream line engine is
⇒ 106,677.6 m/m³ / 2 = 53,338.8 m/m³
Next, we find the velocity of Boeing 787
\(V_{787\) = Mach number of 787 × speed of sound
given that; Mach number is 0.85 and speed of sound is 700 mph
we substitute
\(V_{787\) = (0.85 × 700 mph) × ( 1 hr / 3600 s ) × ( 1609 m / 1 mile )
\(V_{787\) = 265.9319 m/s
Now, to get the Volume flow rate for each dream liner engine { Boeing 787 };
Volumetric flow rate = velocity of flight / fuel economy
we substitute
= 265.9319 m/s / 53,338.8 m/m³
= 0.0049857 ≈ 0.005 m³/s
Therefore, the projected volumetric flow rate of fuel for each of the two Dreamliner engines is 0.005 m³/s
"Como define al ser Humano, la Religión, la biología y la filosofía." y es religion Y urgenteeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answers
Explanation:
Los seres humanos siempre han tenido la necesidad de explicar y comprender los hechos sobre el mundo, ellos mismos y la naturaleza. La religión se configura como un conjunto de creencias comunes a una comunidad, que busca conectar al hombre con una fe en una divinidad superior que explique una visión y construcción del mundo. En sentido antropológico, la religión es una construcción evolutiva de parámetros sociales y dogmáticos como búsqueda de la creación de un sentido de pertenencia social, además de la búsqueda de la comprensión de uno mismo y del desarrollo espiritual.
La biología y la filosofía surgen como conceptos amplios que buscan explicar otros conceptos sobre la ciencia de manera sistemática, diferente a buscar una comprensión del mundo a través de la religión. La filosofía como concepto de que el hombre puede comprender el mundo a través de sus propias visiones y descubrimientos, desarrollando el pensamiento crítico y la búsqueda del conocimiento, que desarrolló las ciencias, entre ellas la biología que ayudó en la comprensión de parámetros esenciales para la calidad de vida humana, como la medicina por ejemplo.
Entonces hay una convergencia de los conceptos de religión, biología y filosofía, y es posible que el hombre crea en cada uno sin que el otro concepto se vea afectado.
prior to being bottled and sold, most spirits are diluted with water to lower their alcohol content. The quality of water can have a huge impact on flavor of spirit
Answers
Prior to being bottled and sold, most spirits undergo a process of dilution with water to lower their alcohol content. The quality of water used in this process can have a significant impact on the flavor of the spirit.
The flavor of spirits can be influenced by various factors such as the type of grains or fruits used in their production, the type of barrels used for aging, and the duration of aging. However, water quality is often overlooked, despite its crucial role in the production process.
The quality of water used in the dilution process can affect the taste, aroma, and mouthfeel of the final product. Poor quality water can contain impurities that alter the flavor of the spirit. For example, water with high levels of minerals such as calcium or magnesium can make the spirit taste harsh or bitter. Similarly, water with high levels of chlorine or other chemicals can affect the aroma and overall taste of the spirit.
On the other hand, using high-quality water can enhance the flavor of the spirit. Distillers may use water from natural sources, such as springs or wells, which have unique mineral compositions that can add depth and complexity to the spirit's flavor profile.
In conclusion, the quality of water used in the dilution process can have a significant impact on the flavor of the spirit. Distillers should carefully consider the source and quality of water they use to ensure the best possible final product.
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11i. One can also use some different logical gates III.1. NOR and NAND stand for respectively NOT OR and NOT AND. Make the truth tables for NOR(p,q) and NAND (p,q). Then built two circuits using our three logic gates representing these new operations. III.2. We have seen that a NOR gate can be built using AND, OR and NOT gates. But there is a surprising converse: any gate can be drawn using just the NOR gate. To see this, what is the output of the following circuit ( note that both inputs of the NOR gate are the same!) III.3. If NOR is the negation of OR, what is then the negation of NOR? Can you now use the previous case to build a circuit using only NOR gates to give p∨q ? III.4. Play around a little to find a circuit for p∧q using only NOR gates. IV. Show that any logic gate can also be constructed using only NAND gates. In particular, you should be able to design a circuit consisting only of NAND gates that is equivalent to a NOR gate.
Answers
We examined the truth tables of NOR and NAND gates, constructed circuits using the NOR gate, explored the use of NOR gates to represent other logic gates, and demonstrated that any logic gate can be constructed using only NAND gates.
We explore the logic gates NOR and NAND, their truth tables, and their relationship with other logic gates. We construct circuits using the NOR gate to represent NOR and NAND operations. We also examine how any gate can be drawn using just the NOR gate and demonstrate this by analyzing a specific circuit. Furthermore, we determine the negation of NOR and use it to build a circuit for the logical OR operation using only NOR gates. Finally, we show that any logic gate can be constructed using only NAND gates, including a circuit equivalent to a NOR gate.
III.1. The truth table for NOR(p, q) is as follows:
| p | q | NOR(p, q) |
|---|---|-----------|
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 0 |
The truth table for NAND(p, q) is the complement of the truth table for AND(p, q):
| p | q | NAND(p, q) |
|---|---|------------|
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
III.2. In the circuit where both inputs of the NOR gate are the same, the output of the NOR gate will be the negation of the input. Therefore, if both inputs are 0, the output will be 1; if both inputs are 1, the output will be 0.
III.3. The negation of NOR is equivalent to the OR gate. By using the previous case, we can build a circuit using only NOR gates to give p∨q.
III.4. To construct a circuit for p∧q using only NOR gates, we can connect the output of two NOR gates in series. The inputs to the first NOR gate are p and q, and the output of the first NOR gate is connected as an input to the second NOR gate. The output of the second NOR gate represents p∧q.
IV. Any logic gate can be constructed using only NAND gates. To design a circuit equivalent to a NOR gate using only NAND gates, we can connect the inputs of a NAND gate together and use the output of the NAND gate as the output of the NOR gate. This circuit will produce the same truth table as the NOR gate and thus is equivalent to it.
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Description Credit card companies and banks use built-in security measures when creating the account numbers on credit cards to make sure the card numbers follow certain rules (you didn't think they were random, did you?). This means that there are only certain valid credit card numbers, and validity can quickly be detected by using an algorithm that may involve adding up parts of the numbers or performing other checks. In this activity, you will implement a function that determines whether or not a card number is valid, according to some simple algorithms. Note that these algorithms are purely made-up; don't try to use them to create fake credit card numbers! :-) We will assume that the credit card number is a string consisting of 14 characters and is in the format #### #### ####, including the dashes, where '#' represents a digit between 0-9, so that there are 12 digits overall. We will revisit this assumption in the an optional later activity. In the space below, implement a function called "verify" that takes a single parameter called "number" and then checks the following rules: 1. The first digit must be a 4. 2. The fourth digit must be one greater than the fifth digit; keep in mind that these are separated by a dash since the format is ####-####- 3. The sum of all digits must be evenly divisible by 4. 4. If you treat the first two digits as a two-digit number, and the seventh and eighth digits as a two-digit number, their sum must be 100. def verify(number) : # do not change this line! #write your code here so that it verifies the card number # be sure to indent your code! return True # modify this line as needed 9 10 input = "5000-0000-0000" # change this as you test your function output = verify(input) # invoke the method using a test input print(output) # prints the output of the function 11 12 # do not remove this line! The rules must be checked in this order, and if any of the rules are violated, the function should return the violated rule number, e.g. if the input is "4238-0679-9123", then the function should return 2, indicating that rule #2 was violated because although rule #1 was satisfied (the first digit is a 4), rule #2 was not, since the fourth digit (which is 8) is not one greater than the fifth (which is 0). If all rules are satisfied, then the function should return True. Note that the card number is not actually a number, but is a string of characters. In Python, you can generally use a string the same way you would use a list, e.g. accessing individual characters using their 0-based index. Hint: You will need to do this for checking all the rules. However, when you access a character using its 0-based index, Python will treat it as a character/letter and not a number, even if it's a digit, and you need to be careful about how you use it in mathematical operations. For instance, if you had the characters '1' and '2' and try to add them, Python would concatenate them and use them to form a longer string; in this case, you would get "12". However, if you try to subtract, multiply, divide, etc. then Python will give you an error. To convert a character/letter to a number, use the "int" function, e.g. "x = int('1')" will convert the character/letter '1' to the number 1 so that you can use it in mathematical operations. Hint: you will need this for rules 2-4. 12345678 1 def verify(number): # do not change this line! 2 3 card_numbers = [] 4 for i in list(number): if i != "-": 5 6 card_numbers.append(int(i)) 7 if card_numbers[0] != 4: 8 return 1 9 if (card_numbers [3] >= card_numbers [4]): 10 return 2 11 if sum(card_numbers) % 4 != 0: 12 return 3 13 val_1 = int("".join(number[:2])) 14 val_2 = int("".join(number[8:9])) 15 if (val_1 + val_2 != 100): 16 return 4 17 18 return True # modify this line as needed 19 20 21 input = "5000-0000-0000" # change this as you test your function output = verify(input) # invoke the method using a test input print (output) # prints the output of the function 22 23 # do not remove this line! Run 24 Reset Incorrect Two or more tests failed: (1) Function returns 2 for input that satisfies Rules 1 and 2 but violates Rule 3. (2) Function returns 2 for input that satisfies Rules 1, 2, and 3 but violates Rule 4. (3) Function returns incorrect value for input that satisfies all rules. Be sure your return values are correct and that you are checking the rules in the correct order. SAWN P 10
Answers
The code that Descript the Credit card companies and banks use built-in security measures when creating the account numbers on credit cards is given in the code attached
What is the code about?The changes that were made in the code are:
In line 9, adjusted the check for run the show 2. The fourth digit ought to be one more prominent than the fifth digit, so the condition is adjusted to card_numbers[3] != card_numbers[4] + 1.In line 15, adjusted the file for number[8:10] to incorporate both the seventh and eighth digits.So, With these changes, the code ought to presently accurately confirm the credit card number agreeing to the given rules.
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Pick up the correct statement from the following:
A. The theory of formation of concrete is based on the phenomena of formation of voids
B. The bulking of sand is taken into account while volumetric proportioning of the aggregates
C. The dry sand and the sand completely flooded with water, have practically the same volume
D. All the above
Answers
Answer:
D. All the above
Explanation:
A is correct. The theory of formation of concrete is based on this phenomenon of formation of voids because, a coarse aggregate aggregate on its own, contain voids. When a fine aggregate like sand is added, it occupies these voids. Further, when finely powdered cement is added to the mixture, it further occupies the voids between the sand particles.
B is correct. The bulking of sand should be taken into account when volumetric proportioning of the aggregates is adopted. Otherwise, less quantity of concrete per bag of cement will be produced, which naturally will increase the cost of concrete. This is because sand particles when left on their own, do not pack properly near each other due to sand buckling, leaving too many void spaces between the sand particles.
C is correct . The dry sand and the sand completely flooded with water have practically the same volume. This is due to the bulking of sand. When water is added to the sand, up to complete flooding, the sand particles pack near each other and the amount of bulking of sand is decreased. The addition of the volume of water, leads to a decrease in the volume of the sand due to the extra voids. These cancels out to practically leave the dry sand and the flooded sand with the same volume.
A Contractor Has A Job Which Should Be Completed In 100 Days. At Present, He Has 80 Men On The Job And It Is Estimated That They Will Finish The Work In 130 Days. Of The 80 Men, 50 Are Each Paid ₱120.00 A Day, 25 At ₱180.00 A Day, And 5 At ₱250.00 A Day. For Each Day Beyond The Original 100 Days, A Contractor Has To Pay ₱500.00 Liquidated Damages.A) How Many
A contractor has a job which should be completed in 100 days. At present, he has 80 men on the job and it is estimated that they will finish the work in 130 days. Of the 80 men, 50 are each paid ₱120.00 a day, 25 at ₱180.00 a day, and 5 at ₱250.00 a day. For each day beyond the original 100 days, a contractor has to pay ₱500.00 liquidated damages.
a) How many more men should the contactor add so that he would complete the work on time?
b) If of the additional men, 2 are paid ₱180.00 a day, and the rest at ₱120.00 a day, would the contractor save money by employing more men and not paying the fine?
Answers
A contractor has a job that should be completed in 100 days. At present, he has 80 men on the job and it is estimated that they will finish the work in 130 days. Of the 80 men, 50 are each paid ₱120.00 a day, 25 at ₱180.00 a day, and 5 at ₱250.00 a day. For each day beyond the original 100 days, a contractor has to pay ₱500.00.
liquidated damages.(a) How many more men should the contractor add so that he would complete the work on time?In the first case, we see that the contractor already has 80 men and they are working for 130 days to complete the job. So, we can use the following formula to determine the additional number of workers required to finish the work in 100 days.
b) If of the additional men, 2 are paid ₱180.00 a day, and the rest at ₱120.00 a day, would the contractor save money by employing more men and not paying the fine Let’s assume that the contractor adds 440 workers, of which 2 are paid ₱180.00 a day and the rest are paid ₱120.00 a day.
The total cost of the new workers is, therefore, ₱9600.00 + ₱4500.00 + ₱49800.00 = ₱63,900.00.The cost of liquidated damages would be calculated as follows: $$LD = (130-100) \cdot 500 = ₱15,000.00$$.
Therefore, the contractor would save money if he employs more men and not pays the fine. The contractor’s savings would be:$$Savings = LD - Additional cost$$$$= 15000.00 - 63900.00 $$$$= -48900.00$$
Thus, we can see that the contractor would save ₱48,900.00 by employing more men and not paying the fine.
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which unit process in a municipal wastewater treatment plant is most likely to consume the most energy and emit the most green house gases:
Answers
The process unit of a municipal wastewater treatment plant that is most likely to utilise the most energy and produce the most greenhouse emissions is activated sludge.
For the sake of clean water and public health, home sewage and wastewater must be collected and treated. It is one of the most significant causes of the overall high level of health that Americans experience. Sewers transport wastewater and sewage from residences, places of business, and industry to wastewater treatment facilities for processing before being released into bodies of water or land or recycled.
For discharges from municipal wastewater treatment plants to American waterways, NPDES licences set discharge limits and requirements. Resources for the needs of discharge include:
An overview of the municipal procedures used to treat household wastewater before releasing it into the country's waterways is provided in the primer on municipal wastewater treatment.
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Chapter 11, problem 30E I DON'T KNOW STEP 4 OF HOW TO USE CURRENT DIVIDER RULE.
Answers
To use the current divider rule, follow these steps.
The steps to be followed1. Identify the resistors in parallel that thecurrent is being divided among.
2. Calculate the individual current flowing through each resistor using Ohm's Law - I = V/R, where I is the current, V is the voltage, and R is the resistance.
3. Sum up the individual currents to find the total current.
4. To find the current flowing through a specific resistor, divide the voltage across that resistor by its resistance.
5. Ensure that the sum of the individual currents equals the total current for verification.
Example -
Suppose we have two resistors, R1 = 4 ohms and R2 = 6 ohms, connected inparallel with a 12V voltage source.
Using the current divider rule, we can calculate the current flowing through each resistor -
Current through R1 = (12V) / (4 ohms) = 3A
Current through R2 = (12V) / (6 ohms) = 2A
The total current in the circuit would be the sum of the individual currents - 3A + 2A = 5A.
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The use of a slot in the leading edge of the wing enables the aeroplane to fly at a slower speed because:A) it changes the camber of the wing.B) the laminar part of the boundary layer gets thicker.C) it decelerates the upper surface boundary layer air.D) it delays the stall to a higher angle of attack.
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The use of a slot in the leading edge of the wing is an effective way to increase the performance of an aircraft. One of the significant advantages of using a slot is that it enables the plane to fly at a slower speed. This is due to the fact that the slot changes the camber of the wing, which means that the shape of the wing is altered.
The correct option is D
When the wing's shape changes, the air flowing over the wing's surface will generate more lift, allowing the plane to fly at a slower speed.Additionally, the slot helps to thicken the laminar part of the boundary layer, which is the layer of air that flows over the wing's surface. The thicker boundary layer helps to reduce drag, which in turn allows the plane to fly more efficiently.Moreover, the slot decelerates the upper surface boundary layer air, which reduces the airflow separation and delays the stall to a higher angle of attack. This means that the aircraft can fly at a higher angle of attack before stalling, which is when the wings can no longer generate enough lift to keep the plane in the air.In conclusion, the use of a slot in the leading edge of the wing is a useful technique to enable an aircraft to fly at a slower speed. This is achieved through changes in the wing's shape, thicker laminar boundary layer, reduced drag, and a higher angle of attack before stalling.For such more question on technique
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norton's theorem and thevenin's theorem related linearity property
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Norton's theorem in regards to linearity property is known to be one that employ the use of a current source while the Thevenin's theorem is known to be one that employ the use of a voltage source.
Thevenin's theorem make use of a resistor in a kind of series, but Norton's theorem is known to use a resister set in a kind of parallel way in line with the source.
What is Norton's Theorem?
Norton's Theorem is known to be a law that states that one can be able to simplify any form of linear circuit, no matter how difficult or hard that it may be, to an equivalent circuit through the use of only one current source and also the use of a parallel resistance linked to a load.
Note that, Norton's theorem in regards to linearity property is known to be one that employ the use of a current source while the Thevenin's theorem is known to be one that employ the use of a voltage source.
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All of these are types of wheel alignments EXCEPT:
A) four-wheel.
B) steering angle.
C) two-wheel.
D) thrust angle.
Answers
Answer:
thrust angle
Explanation:
good luck.........
At a certain location, wind is blowing steadily at 16 m/s. Determine:
a. the mechanical energy of air per unit mass and the power generation potential of a wind turbine with 80-m-diameter blades at that location.
b. Also, determine the actual electric power generation, assuming an overall efficiency of 30 percent. Take the air density to be 1.25 kg/m^3. The mechanical energy of air per unit mass is kJ/kg. The power generation potential of the wind turbine is kW. The actual electric power generation is kW.
Answers
The actual electric power generation is approximately 482,941.97 kW.
a. To determine the mechanical energy of air per unit mass and the power generation potential of a wind turbine with 80-m-diameter blades, we can use the following formulas:
1. Mechanical Energy of Air per Unit Mass:
The mechanical energy of air per unit mass (E) is given by:
E = (1/2) * V^2
- E is the mechanical energy per unit mass (kJ/kg)
- V is the wind speed (m/s)
Substituting the given wind speed of 16 m/s into the formula, we have:
E = (1/2) * (16^2) = 128 kJ/kg
2. Power Generation Potential of the Wind Turbine:
The power generation potential (P) of the wind turbine can be calculated using the formula:
P = (1/2) * ρ * A * V^3
- P is the power generation potential (kW)
- ρ is the air density (kg/m^3)
- A is the swept area of the turbine blades (m^2)
- V is the wind speed (m/s)
The swept area (A) of the turbine blades can be calculated using the diameter (D) of the blades:
A = (π/4) * D^2
Substituting the given diameter of 80 m into the formula, we have:
A = (π/4) * (80^2) = 5026.548 m^2
Now we can calculate the power generation potential:
P = (1/2) * (1.25 kg/m^3) * (5026.548 m^2) * (16^3) = 1,609,806.55 kW
b. To determine the actual electric power generation, assuming an overall efficiency of 30 percent, we can multiply the power generation potential (P) by the efficiency factor:
Actual Electric Power Generation = Efficiency * Power Generation Potential
Actual Electric Power Generation = 0.30 * 1,609,806.55 kW = 482,941.97 kW
Thus, the answer is approximately 482,941.97 kW.
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The actual electric power generation is approximately 482,941.97 kW.
a. To determine the mechanical energy of air per unit mass and the power generation potential of a wind turbine with 80-m-diameter blades, we can use the following formulas:
1. Mechanical Energy of Air per Unit Mass:
The mechanical energy of air per unit mass (E) is given by:
E = (1/2) * V^2
- E is the mechanical energy per unit mass (kJ/kg)
- V is the wind speed (m/s)
Substituting the given wind speed of 16 m/s into the formula, we have:
E = (1/2) * (16^2) = 128 kJ/kg
2. Power Generation Potential of the Wind Turbine:
The power generation potential (P) of the wind turbine can be calculated using the formula:
P = (1/2) * ρ * A * V^3
- P is the power generation potential (kW)
- ρ is the air density (kg/m^3)
- A is the swept area of the turbine blades (m^2)
- V is the wind speed (m/s)
The swept area (A) of the turbine blades can be calculated using the diameter (D) of the blades:
A = (π/4) * D^2
Substituting the given diameter of 80 m into the formula, we have:
A = (π/4) * (80^2) = 5026.548 m^2
Now we can calculate the power generation potential:
P = (1/2) * (1.25 kg/m^3) * (5026.548 m^2) * (16^3) = 1,609,806.55 kW
b. To determine the actual electric power generation, assuming an overall efficiency of 30 percent, we can multiply the power generation potential (P) by the efficiency factor:
Actual Electric Power Generation = Efficiency * Power Generation Potential
Actual Electric Power Generation = 0.30 * 1,609,806.55 kW = 482,941.97 kW
Thus, the answer is approximately 482,941.97 kW.
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Special impact sockets and extensions are easily
identified because they are:
(A) chrome.
(B) aluminum.
(C) flat black
Durant la sto
(D) hard rubber.
les
Answers
Answer:
C
Explanation:
they are flat black
Determine the resistance of 3km of copper having a diameter of 0,65mm if the resistivity of copper is 1,7x10^8
Answers
Answer:
Resistance of copper = 1.54 * 10^18 Ohms
Explanation:
Given the following data;
Length of copper, L = 3 kilometers to meters = 3 * 1000 = 3000 m
Resistivity, P = 1.7 * 10^8 Ωm
Diameter = 0.65 millimeters to meters = 0.65/1000 = 0.00065 m
\( Radius, r = \frac {diameter}{2} \)
\( Radius = \frac {0.00065}{2} \)
Radius = 0.000325 m
To find the resistance;
Mathematically, resistance is given by the formula;
\( Resistance = P \frac {L}{A} \)
Where;
P is the resistivity of the material. L is the length of the material.A is the cross-sectional area of the material.First of all, we would find the cross-sectional area of copper.
Area of circle = πr²
Substituting into the equation, we have;
Area = 3.142 * (0.000325)²
Area = 3.142 * 1.05625 × 10^-7
Area = 3.32 × 10^-7 m²
Now, to find the resistance of copper;
\( Resistance = 1.7 * 10^{8} \frac {3000}{3.32 * 10^{-7}} \)
\( Resistance = 1.7 * 10^{8} * 903614.46 \)
Resistance = 1.54 * 10^18 Ohms
Can somebody help me with that
Answers
Answer:
I think it's 23 ohms.
Explanation:
Not entirely sure about it.
hope this helps
the upper joint is directly above the lower joint when
viewed from the side
Answers
Answer: zero caster
Explanation:
The largest class of errors in software engineering can be attributed to _______.
Answers
Answer:
improper imput validation
Explanation:
What might be the effects if one of the AC unit fans stopped working? Explain in terms of energy and pressure and temperature.
Answers
If the AC unit fan is not spinning, the first thing to check is the circuit breaker. Take a look at the circuit breaker associated with the AC unit and see if it's been tripped. A circuit breaker may trip from overheating due to outside temperatures and the motor's heat.
technician a says the brake shoes should be properly adjusted before the parking brake adjustment. technician b says after the parking brake cable adjusting nut is tightened so the rear wheels have a slight drag on them . loosen the nut 4 turns. who is correct?
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After it's adjusted to your specification, tighten the jam nut to invulnerable the new adjustment in place. Make positive to rotate the rear wheels in the air freely to make sure that the e-brake is not binding with the rotors with the e-brake lever totally released.
How do you alter parking brake shoes?Parking Brake Shoe Adjustments
In case it is necessary, take a jack and remove the wheel to get get admission to to the megastar adjuster. ...
Check in the owner's guide on which aspect will the star adjuster tighten and turn it with a screwdriver; this will shorten the celebrity adjuster.
When have to the parking brake cables be adjusted?If you observe that the brake lever needs to be pulled up many instances or clicked many instances earlier than it engages, you can also want to modify the parking brake cable in your vehicle.
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In the given circuit, V(t)=12cos(2000t+45)V, R1=R2=2Ω, L1=L2=L3=3mH and C1=250μF. You are required to find the Thevenin equivalent of this circuit using phasors. If you write the Thevenin voltage, Vth, in phasor form, what is the magnitude of this phasor? Put your answer in the box below without units.
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The question is incomplete! Complete question along with answer and step by step explanation is provided below.
Question:
In the given circuit, V(t)=12cos(2000t+45)V, R1=R2=2Ω, L1=L2=L3=3mH and C1=250μF. You are required to find the Thevenin equivalent of this circuit using phasors.
a. If you write the Thevenin voltage, Vth, in phasor form, what is the magnitude of this phasor? Put your answer in the box below without units.
b. What is the value of the angle associated with the phasor Vth, in degrees?
c. Now, calculate the Thevenin impedance, Zth. What is the magnitude of this phasor?
d. What is the angle associated with the phasor Zth, in degrees?
Answer:
Vth = 6 < 45° V
Zth = 1.414 < 45°
a. The magnitude of the Thevenin voltage is 6 V
b. The phase angle of the Thevenin voltage is 45°
c. The magnitude of the Thevenin impedance is 1.414 V
d. The phase angle of the Thevenin impedance is 45°
Explanation:
The given voltage is
V(t)=12cos(2000t+45)
In phasor form,
V(t) = 12 < 45° V
So the magnitude of voltage is 12 V and the phase angle is 45°
Also the frequency ω = 2000
then the inductance is
L₁ = L₂ = L₃ = jωL = j×2000×0.003 = j6 Ω
and the capacitance is
C₁ = 1/jωC = 1/(j×2000×250x10⁻⁶) = -j2 Ω
and the resistance is
R₁ = R₂ = 2 Ω
Thevenin voltage:
The Thevenin voltage is the voltage that appears across the open-circuited terminals a-b (after removing L₃)
The Thevenin voltage is given by
Vth = V(t) × [ (R₂ + L₂) / (R₁ + L₁) + (R₂ + L₂) ]
Please note that there is no current flow in the capacitor due to open-circuited terminal a-b
Vth = 12 < 45° × [ (2 + j6) / (2 + j6) + (2 + j6) ]
Vth = 12 < 45° × [ (2 + j6) / (4 + j12) ]
Vth = 4.24264 + j4.24264 V
In phasor form,
Vth = 6 < 45° V
a. The magnitude of the Thevenin voltage is 6 V
b. The phase angle of the Thevenin voltage is 45°
Thevenin Impedance:
The Thevenin Impedance is the impedance of the circuit calculated when looking from the terminal a-b
Zth = [ (R₁ + L₁) × (R₂ + L₂) / (R₁ + L₁) + (R₂ + L₂) ] + (-j2)
Zth = [ (2 + j6) × (2 + j6) / (2 + j6) + (2 + j6) ] - j2
Zth = [ (2 + j6) × (2 + j6) / (2 + j6) + (2 + j6) ] - j2
Zth = [ (-32 + j24) / (4 + j12) ] -j2
Zth = [ (1 +j3) ] - j2
Zth = 1 + j Ω
In phasor form,
Zth = 1.414 < 45°
c. The magnitude of the Thevenin impedance is 1.414 V
d. The phase angle of the Thevenin impedance is 45°
Which of the following is an implication of low
variety?
A. low unit cost
B. flexibility needed
C. high complexity
D. matching customers specific needs
PLEASE EXPLAIN WHICH IS CORRECT WITH EXPLANATION
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The correct option for the implication of low variety is B) Flexibility needed. Variety refers to the number of different products, services, or activities that an organization offers. High variety means that a company offers a wide variety of products or services, while low variety means that a company provides a limited range of products or services.
One of the implications of low variety is that customers have limited options. They are restricted to purchasing only those goods and services that the company offers, which may not match their requirements or preferences. This may lead to losing customers to rivals who offer a greater variety of goods and services.
In the case of low variety, it is critical to have the required flexibility. Customers may ask for certain specific goods or services that are not provided by the company. To meet customer requirements, the company should be adaptable and able to rapidly respond to customer requests by expanding its product line. As a result, low variety necessitates the need for flexibility.
The other given options are not valid. Low unit cost is not related to low variety. Unit cost may be affected by economies of scale and other factors, but it is not directly related to variety. High complexity is not related to low variety as well. As the range of goods and services offered by the company increases, the complexity of the company's operations and management also increases. Matching customers' specific needs is partially correct because the company cannot match customer specific needs in low variety. In low variety, the company has a limited range of goods and services, so it is not possible to fulfill all the customers’ specific needs.
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a what type of contact is used with the High pressure switch?
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Determine the bare module cost of a 1-shell-pass, 2-tube-pass(1 - 2) heat exchanger designed for the following operating conditions: Maximum operating pressure (tube side) = 30 barg Maximum operating pressure (shell side) = 5 barg Process fluid in tubes requires stainless steel MOC Shell-side utility (cooling water) requires carbon steel MOC Heat exchange area = 160 m^2
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The heat exchanger's estimated bare module price is $199,101.
How much does a bare module cost, exactly?The pricing of a bare module includes all necessary hardware and installation labour within a 3-meter radius. Investment = above plus royalties plus real estate plus supplies + legal + working capital plus construction-related interest Working capital is equal to 10%+ of invested fixed capital. This could differ greatly.
Bare module cost = (Cost of tubes + Cost of shell + Cost of bundle) x (Cost factor)
Tube length = \(160 / (2 x 1.3) = 61.54 m\)
Cost of tubes = \(61.54 x $50 = $3,077\)
Shell length = \(1.25 x 61.54 = 76.92 m\)
Cost of shell = \(1.5 x 76.92 x $500 = $57,690\)
Number of tubes = \(61.54 x 10 = 615\)
Assuming a cost per tube of $10, we get:
Cost of bundle =\(615 x $10 = $6,150\)
Bare module cost = \(($3,077 + $57,690 + $6,150) x 3 = $199,101\)
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the water behind hoover dam in nevada is 209 m higher than the colorado river below it. at what rate must water pass through the hydraulic turbines of this dam to produce 50 mw of power if the turbines are 100 percent efficient?
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The required mass flow rate is 49484.37 kg/s
Given the data in the question;
we first determine the relation for mass flow rate of water that passes through the turbine;
so the relation for net work on the turbine due to the change in potential energy considering 100% efficiency is;
W = m ( Δ P.E )
so we substitute (gh) for ( Δ P.E );
W = m (gh)
m = / gh
so we substitute our given values into the equation
m = 100 MW / ( 9.81 m/s²) × 206 m
m = ( 100 MW × 10⁶W/MW) / ( 9.81 m/s²) × 206 m
m = 10 × 10⁷ / 2020.86
m = 49484.37 kg/s
Therefore, the required mass flow rate is 49484.37 kg/s
What is potential energy?
Potential energy is a form of energy that an object possesses by virtue of its position or configuration relative to other objects or to a field. It is the energy that an object has due to its position in a gravitational or electric field, or due to the stretching or compressing of a spring or other elastic material.To know more about potential energy, click the link given below:
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What flight patterns do groups of birds utilize and why?
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A cook uses a pair of twelve-inch-long tongs to remove a piece of chicken from the grill. The chef is applying 3 pounds of squeezing force to the tongs. If more than 1 pound of force is applied to the fish, it will break.
The AMA of the system (rounded to the nearest hundredth) is
.
Using the static equilibrium calculations, the tongs must be held
inches (rounded to the nearest whole number) away from the fulcrum to avoid damaging the fish.
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Answer: yes because fish its like quick sand is will just fall apart into tiny pecies to now it want us to round to the nearst hundredth so what is 12 divide by 3 and time 1
12:3x1=4 because we are rounding to the nearst hundredth
=4
Explanation:
Hi. Help me guyz.
Read the resistance below indicated by the letters.
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Answer:
2/4
7/2
92/1
83/1
9/1
93/0
Explanation:
R
K
K
R
K
R
I don't really know the answer
If an oncoming driver crosses into your path of travel, the space that is usually available for you to move your vehicle is.
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Answer:
If an oncoming driver crosses into your path of travel, the space that is usually available for you to move your vehicle is to the right of your vehicle.
Explanation:
On many roads, there are areas on the sides of the road called the shoulder. The shoulder can be used for pulling over and stopping your vehicle due to emergencies.
If a driver crosses into your lane coming straight for you, the best thing to do is to pull over to the shoulder as fast as possible so to not turn left and hit incoming traffic.