A wing with higher span compared with a lower wing span has (equal wing surface):A) lower induced drag.B) a higher lift/drag ratio.C) higher profile drag.D) higher induced drag.
Answers
The wing with a higher span compared to a lower wing span and equal wing surface area will have a lower induced drag and a higher lift-to-drag ratio, but it may also have higher profile drag. Therefore, Option D is incorrect.
Induced drag is the drag created by the production of lift. A longer wing will produce less induced drag than a shorter wing because it produces a greater amount of lift with a smaller angle of attack.
This means that the longer wing has a higher aspect ratio, which reduces the induced drag. Therefore, option A is correct, and the wing with a higher span will have lower induced drag.
The lift-to-drag ratio is a measure of the efficiency of the wing in producing lift. A higher lift-to-drag ratio means that the wing produces more lift for a given amount of drag.
The longer wing has a higher aspect ratio and produces more lift with less drag, which results in a higher lift-to-drag ratio. Therefore, option B is correct, and the wing with a higher span will have a higher lift-to-drag ratio.
However, a longer wing will also have higher profile drag due to the increased surface area. Profile drag is the drag created by the friction between the air and the wing's surface.
The longer wing has more surface area, which means that it will create more profile drag than a shorter wing with the same surface area. Therefore, option C is also correct, and the wing with a higher span will have higher profile drag.
Lastly, option D is incorrect as stated earlier. A longer wing produces less induced drag than a shorter wing.
In conclusion, a wing with a higher span compared to a lower wing span and equal wing surface area will have lower induced drag and higher lift-to-drag ratio, but may also have higher profile drag.
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Related Questions
The U.S. is heading toward its biggest political and constitutional crisis since the Civil War, and within the next three or four years there is a high probability of mass violence, the collapse of federal authority, and the division of the country into enclaves of Republicans and Democrats.
Answers
The U.S. is heading toward its biggest political and constitutional crisis since the Civil War, and the collapse of federal authority, as well as the division of the country into enclaves of Republicans and Democrats is known to be a true statement.
What is constitutional crisis?In regards to political science, a constitutional crisis is known to be a kind of an issue or a problem or it can be called a conflict in the function of a government that is said to be the political constitution or other fundamental governing law which is seen or perceived to be unable to handle the countries issues.
Hence, The U.S. is heading toward its biggest political and constitutional crisis since the Civil War, and the collapse of federal authority, as well as the division of the country into enclaves of Republicans and Democrats is known to be a true statement.
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Which of the following is NOT a factor that contributes to the annual cost to own an automobile
a
vehicle color
b
repairs
c
fuel
d
maintenance
Answers
Answer:
a. vehicle color
Explanation:
One might expect that the cost of owning a vehicle would not be a function of its color. There is no reason to believe that a blue car gets better gas mileage than a green car of the same make, model, and equipment. So, the appropriate choice is ...
a. vehicle color
__
However, vehicle color may play a role in ownership costs if more money is spent on washing a white car than would be spent on a black or beige car. Similarly, a light-colored car may require less use of an air-conditioner in the summer sun than does a dark-colored car, ultimately affecting fuel cost. It isn't always obvious what the features of a vehicle are that contribute to ownership cost.
A particulate monitor has a power supply consisting of two batteries in parallel. Either battery is adequate to operate the monitor. However, since the failure of one battery places an added strain on the other, the conditional probability that the second battery will fail, given the failure of the first, is greater than the probability that the first will fail. On the basis of testing it is known that 7% of the monitors in question will have at least one battery failed by the end of their design life, whereas in 1% of the monitors both batteries will fail during the design life.
(a) Calculate the battery failure probability under normal operating conditions.
(b) Calculate the conditional probability that the battery will fail, given that the other has failed.
Answers
Answer:
yrt a
Explanation:
a 10mm diameter titanium bar with an elastic modulus of 107gpa is subjected to a tensile load of 19,635n, what is the resulting strain:
Answers
Answer:0.00234
Explanation:
A video store rents movies to members. Each movie in the store has a title and is identified by a unique movie number. A movie can be in VHS, VCD, or DVD format. Each movie belongs to one of a given set of categories (action, adventure, comedy, horror). The store stores a name and a unique phone number for each member. There are two types of members:
Golden Members: Require their credit card and can rent more than one movie each time.
Bronze Members: Don't require a credit card and can rent only one movie each time.
Make a class diagram for it.
Answers
Here's a class diagram that represents the entities and their relationships for the video store scenario described:
The Class Diagram+---------------------+ +---------------+ +-----------------+
| Movie | | Member | | Rental |
+---------------------+ +---------------+ +-----------------+
| movie_id : int | | member_id : | | rental_id : int |
| title : string | | int |<-------| movie : Movie |
| format : string | | name : str | | member : Member |
| category : string | | phone : str| | rental_date : dt|
+---------------------+ | type : str | | is_returned : bool |
+---------------+ +-----------------+
| credit_card: |
+---------------+
| rent_movies() |
+---------------+
^
|
+---------------+
| GoldenMember |
+---------------+
| rent_limit: |
+---------------+
| return_movies()|
+---------------+
^
|
+---------------+
| BronzeMember |
+---------------+
| rent_limit: |
+---------------+
| return_movie()|
+---------------+
The Movie class has attributes movie_id, title, format and category. Each Member has a member_id, name, phone, and type. The Rental class is the association class that connects Movie and Member through the movie and member attributes, respectively, and adds rental_id, rental_date, and is_returned attributes.
There are two sub-classes of Member: GoldenMember and BronzeMember. The GoldenMember has an additional credit_card attribute and a rent_limit method that allows them to rent multiple movies at once. The BronzeMember has a rent_limit method that allows them to rent only one movie at a time. Both sub-classes have a return_movie or return_movies method, respectively, to allow them to return the rented movies.
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In order to avoid slipping in the shop, your footwear should ___________.
(This is for my automotive class by the way)
Answers
Answer:
good shoes
Explanation:
yes
What's the Difference between CAT5e and CAT6?
Answers
The bandwidth that the cable can provide for data transfer is where the biggest distinction of CAT5e cable exists.
What distinguishes CAT 5 from CAT 6?The primary distinction between Cat5e and Cat6 cabling is in the capacity, both of which enable speeds up to megabytes Per second, which is more than enough for the majority of internet connections. Faster data transfer is made possible by higher bandwidth, and Cat6 cables handle speeds up to 250 Gaz as opposed to Cat5e's 100 MHz.
Which is preferable, Cat6 or Cat7?The frequency of a Cat7 is also higher than that of the Cat6. How frequently a signal may go via a cable is determined by its frequency. Therefore, 10,000 Mbit/s may be transported 10,000 times per second at a bandwidth of 1,000 MHz. Therefore, data may be transmitted via a Cat7 wire more quickly than a Cat6 link.
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Which of the following statements is valid? Assume that variable arr is an array of i integers and that the following is true:
arr[0] != arr[i] for all values from 1 through i - 1
Answers
The correct answer is there is no need for a prerequisite; the method will always function as intended.
There is no need for a prerequisite; the method will always function as intended. An array with 10 entries is created by the declaration that follows: values for double[] = new double[10]; Any integer between 0 and 9 can serve as an index. Instead of creating many variables to represent different values, array variables are an option. An array variable's format can either be a collection of one or more name-value pairs or a list of distinct values (an array list) (a JSON array ). Just include the assignment operator (=), the variable name to which the value should be transferred, the array name, and the element index in parentheses. Two-dimensional arrays can be used to hold many records and various fields.
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A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of freeway, the directional peak-hour volume is 3800 vehicles with 2% large trucks and 4% buses (no recreational vehicles), the peak-hour factor is 0.90, and all drivers are regular users. The lanes are 12 ft wide, there are no lateral obstructions within 10 ft of the roadway, and the total ramp density is 1.0 ramps per mile. A bus strike will eliminate all bus traffic, but it is estimated that for each bus removed from the roadway, seven additional passenger vehicles will be added as travelers seek other means of travel. What are the density, volume-to-capacity ratio, and level of service of the upgrade segment before and after the bus strike?
Answers
Answer:
a) Density of the road segment
i) Before bus strike = 23.02 pc/mi/In
ii) after bus strike = 25.76 pc/mi/In
b) Volume to capacity ratio
i) Before bus strike = 0.69
ii) After bus strike = 0.78
C) level of service of the upgrade segment
i) Before bus strike = LOS C
ii) after bus strike = LOS D
Explanation:
a) Density of the road segment
i) before bus strike ( D1 )
D1 = 1662 / 72.18 = 23.02 pc/mi/In
ii) After bus strike ( D2 )
D1 = 1859 / 72.18 = 25.76 pc/mi/In
b) Volume to capacity ratio
i) Before bus strike ( v 1 )
V1 = 1662 / 2400 = 0.69
ii) After bus strike ( V2 )
V2 = 1859 / 2400 = 0.78
C) level of service of the upgrade segment ( Gotten from " LOS Criteria for basic freeway segments " )
i) Before bus strike = ( LOS C )
ii) After bus strike = LOS D
Attached below is the detailed solution to the question above
The structure of a house is such that it loses heat at a rate of 5400 kJ/h per degree Cdifference between the indoors and outdoors. A heat pump that requires a power input of 6 kW isused to maintain this house at 21 C. Determine the lowest outdoor temperature for which the heatpump can meet the heating requirements of this house
Answers
Answer: Tl = - 13.3°C
the lowest outdoor temperature is - 13.3°C
Explanation:
Given that;
Temperature of Th = 21°C = 21 + 273 = 294 K
the rate at which heat lost is Qh = 5400 kJ/h°C
the power input to heat pump Wnet = 6 kw
The COP of a reversible heat pump depends on the temperature limits in the cycle only, and is determined by;
COPhp = Th/(Th - Tl)
COPhp = Qh/Wnet
Qh/Wnet = Th/(Th -Tl)
the amount of heat loss is expressed as
Qh = 5400/3600(294 - Tl)
the temperature of sink
( 5400/3600(294 - Tl)) / 6 = 294 / ( 294 - Tl)
now solving the equation
Tl = 259.7 - 273
Tl = - 13.3°C
so the lowest outdoor temperature is - 13.3°C
Write an if-else statement for the following: If user_tickets is equal to 7, execute award_points = 1. Else, execute award_points = user_tickets.
Answers
Answer:
if user_tickets == 7:
award_points = 1
else:
award_points = user_tickets
Explanation:
Not sure what language you are using. But this can be used for python. Also don't know if you are required to ask the user for any input
A student measures the absorbance of a sample of red dye #3 using a spectrophotometer. If the absorbance is measured as 0.103, what is the concentration of red dye #3 in the sample? Answer in units of micromolar to three significant figures.
Answers
A student measures the absorbance of a sample of red dye #3 using a spectrophotometer. The concentration of red dye #3 in the sample is 16.8 µM.
To determine the concentration, we need to use the Beer-Lambert law, which states that absorbance (A) is directly proportional to the concentration (C) and the path length (b). Mathematically, it can be expressed as A = εbc, where ε is the molar absorptivity (a constant for a given substance and wavelength) and b is the path length (usually 1 cm). To solve for the concentration (C), we rearrange the equation to get C = A/(εb). We need to know the value of ε for red dye #3 at the wavelength used in the spectrophotometer. Let's assume\(ε = 65,000 M^-1cm^-1.\) Substituting the values into the equation, we get C = 0.103/(65,000 x 1) = 1.58 x 10^-6 M = 16.8 µM (to three significant figures). Therefore, the concentration of red dye #3 in the sample is 16.8 µM.
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Signal phrases are handled the same way in both mla and apa documentation styles. True or false?.
Answers
It is FALSE to state that Signal phrases are handled the same way in both MLA and APA documentation styles.
What Signal Phrases?
Signal phrases are short phrases that begin a quote, paraphrase, or summary; they alert readers to the usage of an outside source.
What are the six different sorts of signal words?The following are examples of signal words:
The start or finish of a topic or discussion.A shift in the topic or a return to a prior one.Cause and effect, parts and wholes, relative significance, addition, and compare/contrast are examples of logical relationships between ideas.What is APA Documentation Style?The American Psychological Association (APA) style is a writing style and structure for academic works such as scientific journal articles and books. It is often used to cite sources in the behavioral and social sciences.
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Describe the different methods that mine-owners used to remove water from their mines in the 18th century. Explain why the mine-owners were always looking for new methods to remove this water.
Answers
A machine used to lift motorcycles consists of an electric winch pulling on one supporting cable of a block and tackle system. The winch can pull with a force of 75 lb. If the system can lift a maximum weight of 860 lb, what is the minimum number of supporting strands for this block and tackle system?
Answers
Answer: So you are dealing with maximum and minimum weights and you want to know what MINIMUM number of supporting strands for this block and tackle system are needed I believe. If so you are dealing with economic imbalances Though we are not worrying about money Right? Right we need physics which Physics study matter and how it moves You would need 8 STRANDS
Explanation: Step By Step
What is the optional vacuum cup mount bracket for the control head of a yaesu ftm-400dr?.
Answers
The Yaesu MMB-98 vacuum mount is an optional accessory for the Yaesu FTM-400DR control head.
What does Yaesu ftm - 400dr mean?The FTM-400DR is the first mobile phone to be introduced as a radio partner for the YAESU System Fusion Dual Mode system. When compared to other FDMA digital modulation schemes, C4FM provides superior communication quality.
The GM (group monitor) function checks the current operating frequency to see if there are any other stations in the DN mode and within communication range.
FTM is used to collect network fees such as transaction fees and fees associated with the deployment of smart contracts or the creation of new networks. Without a minimum barrier, the network would be an easy target for spam, causing performance problems and cluttering the ledger.
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identify the conclusions that can be drawn from the given premises using existential generalization. (check all that apply.)Check All That Apply a. There exists a non-six-legged creature that eats a six-legged creature. b. There does not exist a non-six-legged creature that eats a six-legged creature. c. There exists a noninsect that eats an insect d. There does not exist a noninsect that eats an insect.
Answers
A non-six-legged animal that eats a six-legged animal does not exist. Using existential generalization, it is possible to infer from the stated premises that there is a non-insect that eats an insect.
Existential generalization rule: what is it?A valid method of inference in predicate logic that enables one to proceed from a specific statement, or one instance, to a quantified generalized statement, or existential proposition, is known as existential generalization (also known as existential introduction, or I).
What purpose does existential and universal instantiation serve?When something is true of everything, it must also be true of the specific thing that the constant c names. This is known as universal instantiation. When making existential generalizations, it is important to remember that if anything is true of if c is a specific constant, then it applies to at least something.
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Given a 12-bit A/D converter operating over a voltage range from ????5 V to 5 V, how much does the input voltage have to change, in general, in order to be detectable
Answers
Answer:
2.44 mV
Explanation:
This question has to be one of analog quantization size questions and as such, we use the formula
Q = (V₂ - V₁) / 2^n
Where
n = 12
V₂ = higher voltage, 5 V
V₁ = lower voltage, -5 V
Q = is the change in voltage were looking for
On applying the formula and substitutiting the values we have
Q = (5 - -5) / 2^12
Q = 10 / 4096
Q = 0.00244 V, or we say, 2.44 mV
If I have 5 current carrying conductors in a raceway what percentage of ampacity from table 310.16 Through Table 310.19 Do I need to use
Answers
If diverse current-bearing conductors are integrated into a raceway, the ampacity of the conductors must be altered to accommodate the elevated amount of heat released due to their close contact.
How to explain the informationThe recalculation factor relies on the kind of raceway, the number of victuals, and the caliber of the victuals.
As an illustration, per the National Electrical Code (NEC), if five flow conductors inhabit a metal tube, the adjustment portion for 90°C rated cables is fifty percent. This implies that the ampacity of the lines ought to be multiplied by 0.5 or thinned out by half.
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T/F As dislocation density increases, the resistance to dislocation movement increases.
Answers
True. As dislocation density increases, the resistance to dislocation movement increases. This is because a higher density of dislocations leads to more interactions and entanglements between them, making it more difficult for the dislocations to move freely.
As dislocation density increases, the resistance to dislocation movement increases. This is because the presence of more dislocations leads to more obstacles that other dislocations must overcome in order to move, which increases the strength of the material.
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Which of the following is NOT part of a rack-and-pinion steering system?
a. pitman arm
b. idler arm
c. center link
d. all answers are correct
Answers
The one that is not a part of a rack-and-pinion steering system are the pitman arm, idler arm, and center link. The correct option is d. all answers are correct.
What is a rack-and-pinion steering system?Rack and pinion steering employs a gear set to transform the steering wheel's circular motion into the linear motion required to turn the wheels. Tie rods, the shaft, and rack and pinion are the key components of a rack and pinion system.
When the steering wheel is rotated, the shaft transfers the steering wheel's action to the gear. This causes the gear to rotate, which causes the rack to move.
Therefore, the correct option is d. all answers are correct
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Write a program to display the names of five friends in different lines
Answers
Answer:
this is answer
Explanation:
Cls
for i =1 to 5
input "enter the name";n$
print n$
next i
end
What is the primary tool material used for CNC turning?
Answers
----------------------------------------------------------------------------
When the psychologist simply records the relationship between two variables...
Answers
The observed relationship does not by itself reveal which variable causes the other. This is the directionally problem. Also, the relationship may be due to a third variable controlling both of the observed variables.
Relationship between two variables.
The experimental research in psychology aims to analyze the relationships between the various variables. There are two variables such s independent and the dependent variable. The independent in the manipulated variable. Depended is measurable.
Thus the two variables are independent and dependent.
The psychologist can make use of the observations and survey method to record the source of the variables. Such as the independent variable depends on the dependent variable such as a rise in temperature will lead to dryness. The drop in temperature will lead to the cooling effect.Thus the two variables can be recorded by the psychologist.
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The system ________ can communicate with each other and adjust system operation to match the heat load and operating conditions.
Answers
The system automatically can communicate with each other and adjust system operation to match the heat load and operating conditions.
What is system operation?
System operation is the process of managing, controlling, and monitoring the operations of a computer system or network. It encompasses the planning and implementation of system operations, including the coordination of hardware, software, and communication components. System operation includes activities such as system configuration, system monitoring, performance tuning, system backup, system recovery, and system maintenance. System operation ensures that the system or network is secure, reliable, and available to users. It also involves troubleshooting and responding to incidents, analyzing system performance, and identifying areas for improvement. System operation is critical to the success of any organization, as it ensures the availability, reliability, and security of the system or network.
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____ construction is a structural steel construction method consisting of bays of framed structural steel member tat are repeated to create large structures
Answers
The blank in the given question can be filled with the term "portal frame construction".It is a structural steel construction technique that involves the use of framed structural steel members to create large structures.
The key characteristic of this method is the repetitive arrangement of bays, which are framed sections or units that form the structural framework of the building. In portal frame construction, each bay consists of a vertical column on each side, connected by horizontal beams at the top and bottom. This creates a rigid framework that can support the loads and stresses imposed on the structure. The bays are repeated and spaced apart to form the desired size and layout of the building.
Portal frame construction is commonly used for industrial buildings, warehouses, and other structures that require large open spaces and flexible interior layouts. The method provides structural stability, efficient use of materials, and ease of construction. It is often preferred for its cost-effectiveness, speed of erection, and adaptability to various architectural designs.
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For a bronze alloy, the stress at which plastic deformation begins is 275 MPa, and the modulus of elasticity is 115 GPa. (a) What is the maximum load that may be applied to a specimen with a cross-sectional area of 325 mm2 without plastic deformation
Answers
Answer:
89375 N
Explanation:
Rearrange the formula for normal stress for F:
\(\sigma=\frac{F}{A}\)
\(F=\sigma*A\)
Convert given values to base units:
275 MPa = \(275*10^{6}\) Pa
325 \(mm^{2}\) = 0.000325 \(m^{2}\)
Substituting in given values:
F = \((275*10^{6})*(0.000325)=89375\) N
Calculate the capacitance-to-neutral in F/m and the admittance-to-neutral in S/km for the three-phase line in Problem 4.18. Also calculate the line-charging current in kA/phase if the line is 110 km in length and is operated at 230 kV. Neglect the effect of the earth plane.
A 230-kV, 60-Hz, three-phase completely transposed overhead line has one ACSR 954 kcmil conductor per phase and flat horizontal phase spacing, with 7 m between adjacent conductors. Determine the inductance in Him and the inductive reactance in ?/km.
Answers
The capacitance-to-neutral in F/m is 8.742 × 10⁻¹² F/m
The admittance-to-neutral in S/km is j3.296 × 10⁻⁶ S/km
The line charging current in kA/phase if the line is 110 km in length and is operated at 230 kV, I\(_{chg}\) = 4.814 × 10⁻¹² kA/ Phase
What is capacitance?A component or circuit's capacitance is its capacity to accumulate and store energy in the form of an electrical charge. The ratio of the electric charge on each conductor to the potential difference, or voltage, between them is used to express capacitance.
Farads (F), which bear the name of English physicist Michael Faraday, are the units used to measure the capacitance value of a capacitor (1791–1867).
A farad is a huge amount of capacitance. Most household electrical appliances contain capacitors that produce only a tiny amount of electricity, often a thousandth of a farad (or microfarad, or F), or as little as a picofarad (a trillionth, pF).
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Which of the following formatting choices exist in Excel when using conditional formatting? A. Color scales B. Coloring cells that meet the condition C. Icon sets d) all of the above
Answers
All of the following formatting choices exist in Excel when using conditional formatting:Color scales.Coloring cells that meet the condition.Icon sets.
Conditional formatting is a method for customizing and highlighting data based on particular conditions. It allows users to apply specific formatting options such as colors, fonts, and borders to cells based on their contents or characteristics. All of the following formatting choices exist in Excel when using conditional formatting: Color scales, Coloring cells that meet the condition, and Icon sets.The following is an explanation of these formatting choices:Color scales:Color scales are used to show a range of data values in one color gradient. For example, a heat map might display sales data by coloring cells red for high values, yellow for moderate values, and green for low values.
Conditional formatting is an advanced tool used to highlight specific data within an Excel spreadsheet. The formatting options used in conditional formatting are chosen based on the data within a given cell. Color scales, coloring cells that meet the condition, and icon sets are all formatting choices that can be made when using conditional formatting. Each of these formatting choices can be explained further. Color scales display a range of data values in one color gradient. The user can choose the color scheme, and then Excel will shade each cell in the spreadsheet based on the data values.
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1a) find a recurrence relation for the number of permu- tations of a set with n elements. b) use this recurrence relation to find the number of per- mutations of a set with n elements using iteration.
Answers
To find the recurrence relation for the number of permutations of a set with n elements, we can start by considering the base case of n=1. In this case, there is only one permutation of the set, which is the set itself.
Now, let's consider the case where n>1. We can choose one element from the set and fix it in place. There are n choices for which element to fix, and once we have done this, we are left with a set of n-1 elements that we need to permute. By the multiplication principle, the number of permutations of the set of n elements is equal to the number of ways to choose an element to fix, multiplied by the number of permutations of the remaining n-1 elements.
Therefore, we can write the recurrence relation as:
P(n) = n * P(n-1)
where P(n) represents the number of permutations of a set with n elements.
To use this recurrence relation to find the number of permutations of a set with n elements using iteration, we can start by setting the base case of P(1) = 1. Then, we can use the recurrence relation to compute P(2), P(3), and so on, until we reach P(n).
For example, to find P(2), we can use the recurrence relation:
P(2) = 2 * P(1) = 2 * 1 = 2
To find P(3), we can use the recurrence relation again:
P(3) = 3 * P(2) = 3 * 2 = 6
And so on, until we find P(n) using the recurrence relation.
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