as s increases, elost approaches a maximum value labeled emax on the graph above. write an equation for emax in terms of m, d, and physical constants, as appropriate.
Answers
The elastic limit, also known as the yield point, the maximum elastic limit emax, we get emax = ✓(2 σ² V / k E)
How to calculate the valueThe energy stored in the spring at this point is equal to the elastic potential energy, given by:
E = 1/2 k x²
At the maximum elastic limit, the energy stored in the spring is equal to the energy required to permanently deform the material, given by:
E = σ² V / (2 E)
Setting these two equations equal to each other and solving for the maximum elastic limit emax, we get:
emax = ✓(2 σ²V / k E)
This equation shows that emax depends on the yield strength, volume, and Young's modulus of the material, as well as the spring constant.
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Related Questions
It is desired to enrich the partial pressure of hydrogen in a hydrogen–nitrogen gas mixture for which the partial pressures of both gases are 0.1013 MPa (1 atm). It has been proposed to accomplish this by passing both gases through a thin sheet of some metal at an elevated temperature; in as much as hydrogen diffuses through the plate at a higher rate than does nitrogen, the partial pressure of hydrogen will be higher on the exit side of the sheet. The design calls for partial pressures of 0.051 MPa (0.5 atm) and 0.01013 MPa (0.1 atm), respectively, for hydrogen and nitrogen. The concentrations of hydrogen and nitrogen (CHC
H and CNC N , in mol/m3mol/m
3 ) in this metal are functions of gas partial pressures (pH2 and pN2p
H 2 and p N , in MPa) and absolute temperature and are given by the following expressions:
CH=2.5×103√pH2exp(−27,800J/mol/RT)
CN=2.75×103√pN2exp(−37,600J/mol/RT )
Furthermore, the diffusion coefficients for the diffusion of these gases in this metal are functions of the absolute temperature, as follows:
DH(m2/s)=1.4×10−7exp(−13,400J/mol/RT)
DN(m2/s)=3.0×10−7exp(−76,150J/mol/RT)
Is it possible to purify hydrogen gas in this manner? If so, specify a temperature at which the process may be carried out, and also the thickness of metal sheet that would be required. If this procedure is not possible, then state the reason(s) why.
Answers
Answer:
T = 3460 K
Explanation:
See attachment for calculation.
Since the temperature we have is above the melting point of the metal, then we can conclude that it is too high for the diffusion process to be possible.
A logic circuit with 3 gates and 2 inputs. The circuit will be read from the final output to the inputs.
The final AND gate has two inputs, the gate has output R.
The first input to the final AND gate is the output from an OR gate.
The OR gate has two inputs.
The first input to the OR gate is P.
The second input to the OR gate is Q.
The second input to the final AND gate is the output from a NOT gate.
The NOT gate has one input.
The input to the NOT gate is Q.
input signals:
P = 0 and Q = 1
R = __________-
Answers
Answer:
R = 0
Explanation:
The output R is the result of the function ...
R = (P+Q)·Q'
This simplifies to ...
R = PQ' + 0
R = PQ'
The result R will be the AND of P=0 and Q'=(1-1)=0. Any AND function with a 0 input will have a 0 output.
R = 0
The rigid bar EFG is supported by the truss system shown. Determine the cross-sectional area of member AE for which the normal stress in the member is 15 ksi. It is given that p=4200 lb. 6 bula P 4f74f- 4f- The cross-sectional area of member AE is i n?
Answers
The physiological cross-sectional area (PCSA) of a muscle, typically at its biggest point, is the area of the cross section of a System taken perpendicular to its fibers.
It is frequently employed to explain how pennate muscles contract. In contrast, the cross-sectional area is the area obtained when splitting the identical item into two. Cross sectional area refers to the size of that specific cross section. When an object is present at a location, its area is measured; however, when a 3D object is cut perpendicularly, its cross-sectional area is measured. Any rectangular solid, including a cube, has a volume equal to the base's area (length times width) times the height: V = l × w × h.
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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
ejercicio 12.37 (del libro Principles of foundation Engineering 9th edition)
Answers
Lo siento, como modelo de lenguaje, no tengo acceso a material fuera de línea o físico, como el libro "Principles of Foundation Engineering 9th Edition". Sin embargo, si puede proporcionarme los detalles del problema o la pregunta, puedo intentar ayudarlo a resolverlo o proporcionar una explicación sobre el tema en cuestión.
water flows into the source end of a sieve tube because _____.
Answers
Water flows into the source end of a sieve tube because: a. sucrose has been actively transported into the sieve tube, making it hypertonic.
What is a sieve tube?In Medicine and Science, a sieve tube can be defined as the members of living cells which typically does not consist of a nucleus, that are saddled with the responsibility of transporting carbohydrates throughout the body of a plant.
This ultimately implies that, a sieve tube simply refers to the conducting and transporting element or members of living cells of the phloem.
In conclusion, water typically flows into the source end of a sieve tube due to the active transportation of sucrose into the sieve tube, which eventually makes it hypertonic.
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Complete Question:
Water flows into the source end of a sieve tube because ____.
a. sucrose has been actively transported into the sieve tube, making it hypertonic.
b. water pressure outside the sieve tube forces in water.
c. the companion cell of a sieve tube actively pumps in water.
d. sucrose has been dumped from the sieve tube by active transport.
e. sucrose has diffused into the sieve tube, making it hypertonic.
pdf) determination of dispersion curves for composite materials with the use of stiffness matrix method
Answers
The determination of dispersion curves for composite materials can be done using the stiffness matrix method. This method involves calculating the stiffness matrix of the composite material, which represents its mechanical properties. The stiffness matrix takes into account the elastic moduli and geometric properties of the composite.
The stiffness matrix method is particularly useful for analyzing the behavior of composite materials, as it takes into account their anisotropic nature and allows for the determination of dispersion curves in different directions. This information is important for understanding the wave propagation characteristics in composite materials, such as the presence of guided waves or the effect of material properties on wave behavior.
In summary, the determination of dispersion curves for composite materials with the use of the stiffness matrix method involves calculating the stiffness matrix and solving the wave equation to obtain the relationship between frequency and wave number for different wave modes.
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Given an initialized String variable message , and given a PrintWriter reference variable named output that references a PrintWriter object , write a statement that writes the string referenced by message to the file output streams to.
Given an initialized String variable message , and given a PrintWriter reference variable named output that references a PrintWriter object , write a statement that writes the string referenced by message to the file output streams to.
Answers
To write the string referenced by the variable message to the file output streams using a PrintWriter object referenced by output, you can use the println method.To write the string to the file output streams, you need to call the println method of the PrintWriter object.
The println method writes a string to the output stream and appends a line separator to it. Here's an example statement that accomplishes this:
output.println(message);
This statement calls the println method on the output object and passes the message string as an argument. The println method writes the string followed by a line separator to the output streams associated with the PrintWriter object. If you want to write the string without appending a line separator, you can use the print method instead:
output.print(message);
Both println and print methods allow you to write the string referenced by message to the file output streams using the PrintWriter object output.
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You were hired to build an artificial reservoir in an area of 50 acres and a depth of 7 feet is required. Calculate the volume in cubic meters
Answers
The volume of the artificial reservoir can be calculated using the formula: Volume = Area x Depth. First, we need to convert the area of 50 acres to square meters. One acre is equal to 4046.86 square meters, so 50 acres is equal to:
50 acres x 4046.86 square meters/acre = 202343 square meters.
To calculate the volume of an object, we need to know its dimensions. In this case, we were given the area (50 acres) and the depth (7 feet) of the artificial reservoir. We used the formula Volume = Area x Depth to find the volume in cubic feet. However, since the final answer is required in cubic meters, we needed to convert the feet to meters using the conversion factor 0.3048 meters/foot.
To calculate the volume of the reservoir, we need to convert the area and depth into meters, then multiply them together.
Convert the area from acres to square meters.
1 acre = 4,046.86 square meters
50 acres = 50 * 4,046.86 = 202,343 square meters
Convert the depth from feet to meters.
1 foot = 0.3048 meters
7 feet = 7 * 0.3048 = 2.1336 meters
Calculate the volume.
Volume = Area * Depth = 202,343 square meters * 2.1336 meters = 89,687.41 cubic meters
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Question 5: Two gears A and B having velocity ratio of 1.48, Gear A supposed to be smaller of the two gears revolves at the speed of 12 rpm in clockwise direction and has 24 number of teethes. The gears are meshing externally having module of 2 mm. Determine: 15 marks a. The number of teeth on Gear B b. The pitch diameters of both the gears c. The addendum d. The Dedendum e. The circular pitch f. The tooth thickness g. The speed of gear B h. The theoretical centre distance of the two gears
Answers
Velocity ratio refers to the ratio of the angular velocities or rotational speeds of two interacting components in a mechanical system, typically gears or pulleys.
(a) Number of teeth on Gear B:
Given the velocity ratio (V.R.) = 1.48 and N1 = 24 (as smaller gear is A), we can calculate N2 using the equation N2 = 1.48 × N1. Substituting the values, we find N2 ≈ 36. Therefore, the number of teeth on Gear B is 36.
(b) Pitch diameters of both the gears:
Using the formula for pitch diameter D = (number of teeth × module) / π, we can calculate the pitch diameters. For gear A, D1 = (24 × 2) / π = 15.245 mm, and for gear B, D2 = (36 × 2) / π = 22.867 mm.
(c) Addendum:
The addendum (a) is equal to the module, so for both gears, a1 = a2 = 2 mm.
(d) Dedendum:
The dedendum (b) is equal to 1.25 times the module, so for both gears, b1 = b2 = 2.5 mm.
(e) Circular pitch:
The circular pitch (p) is equal to π times the module, so for both gears, p1 = p2 = 6.2832 mm.
(f) Tooth thickness:
The tooth thickness is equal to half of π times the module, so for both gears, t1 = t2 = 3.1416 mm.
(g) Speed of gear B:
Using the velocity ratio formula V.R. = N1 / N2, we can calculate the speed of gear B. For gear B, N2 = N1 / V.R. = 24 / 1.48 = 16.216 rpm.
(h) Theoretical center distance of the two gears:
The theoretical center distance is given by (module × (N1 + N2)) / 2. Therefore, the theoretical center distance for the two gears is T.C.D. = (2 × (24 + 36)) / 2 = 60 mm.
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Where's an inductor most likely to be found in a power-supply circuit?
Answers
This question concerns the field GF(16)GF(16). The modulus is P(x)=x4+x+1P(x)=x4+x+1.Please answer the following questions about arithmetic in this field.a) If p(x)=x3+x2+1p(x)=x3+x2+1 and q(x)=x3+x+1q(x)=x3+x+1, what is p(x)+q(x)p(x)+q(x) modulo PP?d) If p(x)=x2p(x)=x2 and q(x)=x2+x+1q(x)=x2+x+1, what is p(x)⋅q(x)p(x)⋅q(x) modulo PP?
Answers
In the field GF(16)GF(16) with modulus P(x)=x4+x+1, here are the answers to the given questions:
a) To find p(x)+q(x) modulo P(x), we first add the two polynomials:
p(x)+q(x) = (x3+x2+1) + (x3+x+1) = 2x3 + x2 + x + 2
However, this sum is not yet in the correct form to be modulo P(x), as the coefficients are not in the field GF(16). So we need to perform reductions by the modulus P(x) until all coefficients are in the field GF(16). We know that x4 = x+1 (by the definition of the modulus), so we can replace any x4 terms with x+1. Using this, we can reduce our sum as follows:
2x3 + x2 + x + 2 = 2x3 + x2 + x + 2(x4+x+1) = 2x3 + x2 + 3x + 2 = x3+x2+3x+2
So p(x)+q(x) modulo P(x) is equal to x3+x2+3x+2.
d) To find p(x)⋅q(x) modulo P(x), we first multiply the two polynomials:
p(x)⋅q(x) = x2(x2+x+1) = x4 + x3 + x2
Again, we need to reduce this polynomial by the modulus P(x) to get all coefficients in the field GF(16). We can use the fact that x4 = x+1, so:
x4 + x3 + x2 = (x+1) + x3 + x2 = x3 + x2 + x + 1
Therefore, p(x)⋅q(x) modulo P(x) is equal to x3 + x2 + x + 1.
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the atsa transferred all security regulations to what part of the code of federal regulations?
Answers
According to the information we can infer that the atsa tranferred all security regulations to title 49 CFR Part 1540
The atsa tranferred al lsecurity regulations to what part of the code of federal regulations?The Aviation and Transportation Security Act (ATSA) transferred all security regulations to Title 49 CFR Part 1540 of the Code of Federal Regulations (CFR). This specific part of the CFR is dedicated to outlining security regulations for transportation, with a particular emphasis on aviation security.
It covers various aspects related to the security of airports, airlines, passengers, cargo, and other entities involved in transportation. Title 49 CFR Part 1540 serves as the primary reference for security regulations in the United States transportation system, ensuring the safety and integrity of the transportation infrastructure.
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Which of the following wouldn't be pictured on a fan motor's ladder logic diagram? A. Auxiliary contacts B. two Push-button control C. Boiler D. Mixing chamber
Answers
Answer:
c
Explanation:
:)
A 0.35 m3 vessel holds ethane vapour at 25°C and 2200 kPa. If it is heated to 220°C, what pressure is developed?
Answers
The pressure developed when the vessel is heated to 220°C is approximately 3638 kPa.
To solve this problem, we can use the ideal gas law:
\(P_v\) = nRT
Where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
First, we need to find the initial number of moles of ethane in the vessel. To do this, we can use the following equation:
n = \(P_v\)/\(R_t\)
Where P is the initial pressure, V is the volume, R is the gas constant, and T is the initial temperature. Substituting the given values, we get:
n = (2200 kPa)(0.35 m^3)/(8.314 J/(mol*K)*298 K) ≈ 5.33 mol
Next, we can use the ideal gas law to find the final pressure at the new temperature. Since the number of moles and the volume are constant, we can write:
\(P_1\)/\(T_1\) = \(P_2\)/\(T_2\)
where \(P_1\) is the initial pressure, \(T_1\) is the initial temperature, \(P_2\) is the final pressure, and \(T_2\) is the final temperature. Substituting the given values, we get:
\(P_2\) = \(P_1\)*\(T_2\)/\(T_1\) = (2200 kPa)(493 K)/(298 K) ≈ 3638 kPa
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locate the centroid of the shaded area between the two curves
Answers
9514 1404 393
Answer:
(x, y) = (5.76, 1 5/7)
Explanation:
The location of the centroid in the x-direction is the ratio of the first moment of area about the y-axis to the total area. Similarly, the y-coordinate of the centroid is the first moment of area about the x-axis, divided by the area.
For the moment about the y-axis, we can define a differential of area as ...
dA = (y2 -y1)dx
where y2 = √(x/k2) and y1 = k1·x^3
The distance of that area from the y-axis is simply x.
So, the x-coordinate of the centroid is ...
\(\displaystyle c_x=\frac{a_x}{a}=\frac{\int{x\cdot dA}}{\int{dA}}\\\\a_x=\int_0^{12}{x(k_2^{-1/2}\cdot x^{1/2}-k_1x^3)}\,dx=\frac{2}{5k_2^{1/2}}\cdot12^{5/2}-\frac{k_1}{5}12^5\\\\a=\int_0^{12}{(k_2^{-1/2}\cdot x^{1/2}-k_1x^3)}\,dx=\frac{2}{3k_2^{1/2}}\cdot12^{3/2}-\frac{k_1}{4}12^4\\\)
For k1 = 4/12^3 and k2=12/4^2, these evaluate to ...
\(a_x=115.2\\a=20\\c_x=5.76\)
The y-coordinate of the centroid requires we find the distance of the differential of area from the x-axis. We can use (y2 +y1)/2 for that purpose. Then the y-coordinate is ...
\(\displaystyle c_y=\frac{a_y}{a}\\\\a_y=\int_0^{12}{(\frac{y_2+y_1}{2}(y_2-y_1))}\,dx=\frac{1}{2}\int_0^{12}{(\frac{x}{k_2}-(k_1x^3)^2)}\,dx\\\\a_y=\frac{12^2}{4k_2}-\frac{k_1^212^7}{14}=\frac{240}{7}\\\\c_y=\frac{12}{7}\approx1.7143\)
The centroid of the shaded area is ...
(x, y) = (5.76, 1 5/7)
The quality control engineer at a petrochemical refinery is in a _____ position.
Answers
The quality control engineer at a petrochemical refinery is in a matrix position.
Who is an engineer?An engineer can be defined as a person who solves technical problems which are related to a product or a good. These are also engaged in developing new products full of the improvement of the efficiency and quality of the product.
A matrix's profile is determined by the object's row and column numbers, in that order.
Petrochemicals are indeed the chemical byproducts of the processing of gasoline. Some petroleum-derived chemical compounds can also be produced from these other oil and coal.
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Which type of design model gives general guidelines for approaching a problem, allows creativity and flexibility, and relies on an engineer's experience and judgment
Answers
There are several types of design models used in engineering. One of these design models gives general guidelines for approaching a problem, allows creativity and flexibility, and relies on an engineer's experience and judgment. This design model is known as heuristic design.
It is one of the most common approaches to designing a system, product, or process.Heuristic design can be described as a problem-solving approach that takes a practical, flexible, and experimental approach to engineering design. This design model allows engineers to apply their experience, knowledge, and creativity to a problem, providing practical solutions that meet specific needs. One of the key advantages of heuristic design is that it allows engineers to develop solutions that are based on a wide range of design principles and practices, rather than being limited by a particular set of design rules or algorithms.
Another important aspect of heuristic design is that it allows engineers to work with a high degree of creativity and flexibility. This is particularly important when working on complex problems that require innovative solutions. Engineers are able to explore a range of different design options and approaches, experimenting with different design concepts and ideas until they find the best solution for a given problem.In conclusion, heuristic design is an effective design model that provides engineers with general guidelines for approaching a problem, while also allowing creativity and flexibility.
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The top down design process is sometimes called stepwise refinement
-overall task is broken down into a series of sub tasks
-each sub task is examined to see if it can be further broken down into more sub tasks
-the sub tasks are written in code
Answers
True. The top-down design process is indeed sometimes called stepwise refinement.
In this approach, the overall task or problem is broken down into a series of subtasks or smaller components. Each subtask is examined to determine if it can be further broken down into more detailed subtasks. This process continues until the subtasks are small enough to be written in code or implemented in a specific programming language. The stepwise refinement approach allows for a systematic and structured way of designing and implementing complex systems or programs.
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online registration verifies that you meet all prerequisites of a particular course before you can successfully register for the course. this information system is using _________ to ensure that business rules are followed.
Answers
The information system for online registration is using data validation to ensure that business rules are followed.
Data validation is the process of verifying that data entered into a system is accurate, complete, and meets the required format and business rules. In this case, the system is checking whether the user has met all the necessary prerequisites for a particular course before allowing them to register. This helps to ensure that students are only registered for courses that they are qualified to take, which can help to prevent problems such as dropped courses or failing grades. Overall, data validation is an important tool for ensuring that business rules are followed in information systems, and it plays a critical role in ensuring data quality and accuracy.
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When would working with machinery be a common type of caught-in and caught-between
hazard?
Answers
Answer:
A working with machinery be a common type of caught-in and caught-between hazard is described below in complete detail.
Explanation:
“Caught in-between” accidents kill mechanics in a variety of techniques. These incorporate cave-ins and other hazards of tunneling activity; body parts extracted into unconscious machinery; reaching within the swing range of cranes and other installation material; caught between machine & fixed objects.
Answer:
When working with heavy pieces.
Explanation:
1. What is an op-amp? List the characteristics of an ideal op-amp
Answers
Answer:
An opamp is an operation amplifier. It takes an input signal and amplifies it on the output side.
An ideal opamp should have infinite impedance at its input, infinite gain on the output, and zero impedance on the output
1. A transfer girder is to support one symmetrically located column having a factored load of P (5000+200N) KN and is supported on 600mmx600mm square columns. The clear span of the transfer girder is 6m. The overall depth of the beam is (h = 4000mm) and the width of the beam is (b=400mm). Using C25 concrete and S360 reinforcing steel, Design the beam by STM method. (Neglect self-weight of the beam). Note: N=3.
Answers
Answer:
15000 KN.m
Explanation:
To design the transfer girder using the STM (Simplified Theory of Moments) method, we need to follow the steps outlined below:
Step 1: Calculate the factored load (P):
Given: P = 5000 + 200N KN
Let's substitute N = 3 into the equation:
P = 5000 + 200(3) = 5000 + 600 = 5600 KN
Step 2: Calculate the factored moment (Mu):
Mu = P x L^2 / 8
= 5600 KN x (6m)^2 / 8
= 15000 KN.m
Step 3: Calculate the design moment (Md):
Md = Mu / γm
(where γm is the partial safety factor for moment)
The value of γm depends on the design code or standard being used. For example, in Eurocode 2, the value of γm for reinforced concrete beams is typically taken as 1.35. However, since the specific code or standard is not provided in the question, we cannot calculate the design moment without this information.
To proceed with the design, we need to know the value of γm as specified in the relevant design code. Once that value is known, we can calculate the design moment and continue with the design process.
It is advisable to consult a structural engineer or refer to the appropriate design code or standard to obtain the required values and ensure accurate calculations for the design of the transfer girder.
The point of contact of two pitch circles of mating gears is called?
Answers
Answer:
the pitch point im pritty sure what is is
The point of contact of two pitch circles of mating gears is called the pitch point.
What is the pitch point?
A pitch point is where two pitch circles frequently come into touch. A common point of contact between two pitch circles of mating gears is called a pitch point. The pitch circle and is centered on the top of the teeth. Dedendum circle, also known as the root circle, is the circle traced through the base of the tooth.
The pressure angle, often known as the “tooth shape,” is the angle at which pressure from one gear's tooth is transferred to another gear's tooth. Pure rolling motion will occur at pitch point.
Therefore, it is pressure point.
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Diseña un mecanismo multiplicador con un engranaje motriz cuya relación de transmisión sea de 0.5 y que transmita el movimiento entre ejes distantes. Inserta una captura de pantalla indicando la relación entre los diámetros y la velocidad de giro del engranaje motriz.
Answers
Specify the coordinate system (Cartesian, cylindrical, spherical) you would use, along with any relevant assumptions, when modeling transport processes in each of the following scenarios: a. loss of energy through a flat double-pane window b. transfer of dissolved oxygen from a culture medium into sphere-shaped cells c. the fluid motion produced when stirring coffee in a typical mug d. dissipation of energy from the skin of a tall and skinny person e. the velocity profile in waves about to crash on a flat shore f. heating of a cold bottle of alcoholic cider by a warm hand g. evaporation of beads of water from waterproof surfaces
Answers
The geometries and behaviors described in the scenarios are best modeled using specific coordinate systems. The Cartesian coordinates are suitable for the flat double-pane window and the heating of a cold bottle, while spherical coordinates are appropriate for the transfer of dissolved oxygen, energy dissipation from a person's skin, and the evaporation of water droplets. Cylindrical coordinates are suitable for modeling fluid motion in a mug and wave velocity profiles. These coordinate systems align with the respective shapes and behaviors of the objects and phenomena being analyzed.
a. The flat double-pane window will be modeled using Cartesian coordinates. This is due to the window being flat and with rectangular geometry, so it can be modeled with two dimensions with respect to the x- and y-axes.
b. The transfer of dissolved oxygen from the culture medium to sphere-shaped cells will be modeled using spherical coordinates. This is because the cells are spherically shaped and thus, their geometry can be described by radial distance from a fixed center point, as well as polar and azimuthal angles.
c. The fluid motion produced when stirring coffee in a typical mug will be modeled using cylindrical coordinates. This is because the mug is cylindrical in shape, and thus the coffee can be modeled with radial and axial distances, as well as an angular coordinate.
d. The dissipation of energy from the skin of a tall and skinny person will be modeled using spherical coordinates. This is because the person is tall and skinny, so their geometry can be described with radial distance from a fixed center point, as well as polar and azimuthal angles.
e. The velocity profile in waves about to crash on a flat shore will be modeled using cylindrical coordinates. This is because the waves are cylindrical in shape and can be modeled with radial and axial distances, as well as an angular coordinate.
f. Heating of a cold bottle of alcoholic cider by a warm hand will be modeled using Cartesian coordinates. This is because the bottle is rectangular in shape and can be modeled with two dimensions with respect to the x- and y-axes.
g. The evaporation of beads of water from waterproof surfaces will be modeled using spherical coordinates. This is because the water droplets are spherically shaped and thus, their geometry can be described by radial distance from a fixed center point, as well as polar and azimuthal angles.
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why does my man bun not have its own erodynamics
Answers
Answer:
umm okay for starters I have no clue lol.
what is aerodynamics????
Describe pressure and Density altitude. Q2: Describe the effect of pressure, humidity, and temperature on air density. Q3: List primary factors most affected by the performance of aircraft. Q4: How do drones fly?
Answers
Pressure altitude is the vertical distance above the standard datum plane, whereas Density altitude is the height in the International Standard Atmosphere at which the air density is equal to the actual air density at the place of observation.
Pressure Altitude Pressure Altitude is a term used to describe the altitude of an aircraft above a given datum plane. It is measured by an altimeter that has been calibrated to read pressure rather than altitude. This is because pressure is directly proportional to the altitude, and so changes in pressure can be used to determine changes in altitude. Density Altitude Density Altitude is the altitude in the International Standard Atmosphere (ISA) at which the air density is equal to the actual air density at the place of observation.
It is affected by the air temperature, atmospheric pressure, and humidity, and is usually higher than the pressure altitude.Q2: The effect of pressure, humidity, and temperature on air density is described below:Air Pressure: When air pressure increases, air density also increases.Humidity: Humidity decreases air density because water molecules are lighter than air molecules and displace some of the air molecules in a given space.Temperature: When air temperature increases, air density decreases. Conversely, when air temperature decreases, air density increases.Q3: The primary factors that affect the performance of an aircraft are the following:Thrust: The forward force that propels the aircraft forward. Weight: The downward force exerted on the aircraft due to gravity.
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2. A general needs to take his troops across the river. He spies two boys with a small boat. He commandeers both the boat and the boys. Unfortunately, the boat will only hold two boys or one soldier. Yet he determines a method for getting his troops across. What could it be?
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I am so confused, can you explain it?
in an aligned and continuous carbon fiber-reinforced nylon 6,6 composite, the fibers are to carry 97% of a load applied in the longitudinal direction. using the data provided, determine the volume fraction of the fibers that will be required. what will be the tensile strength of this composite? assume that the matrix stress at which fiber failure is 50 mpa
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tensile strength of this composite will be 9.6 MPa.
To determine the volume fraction of the fibers, we need to use the rule of mixtures which states that the overall properties of a composite material are a weighted average of the properties of the individual components.
In this case, we can use the equation:
Vf = (Fload / Ffiber) / (Fload / Ffiber + Fload / Fmatrix)
where Vf is the volume fraction of the fibers, Fload is the load applied in the longitudinal direction, Ffiber is the strength of the fibers in the longitudinal direction, and Fmatrix is the stress at which fiber failure occurs in the matrix.
Plugging in the values given:
Vf = (0.97 / 1) / (0.97 / 1 + 0.03 / 50)
Vf = 0.841
Therefore, the volume fraction of the fibers that will be required is 84.1%.
To find the tensile strength of the composite, we need to use the equation:
Fcomposite = Vf * Ffiber + (1 - Vf) * Fmatrix
where Fcomposite is the strength of the composite, Vf is the volume fraction of the fibers, Ffiber is the strength of the fibers in the longitudinal direction, and Fmatrix is the stress at which fiber failure occurs in the matrix.
Plugging in the values given:
Fcomposite = 0.841 * 1 + (1 - 0.841) * 50
Fcomposite = 9.6 MPa
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