Q1-Part B.(8pts.):(a-4 pts) Describe, compare, and contrast ionic, covalent, and metallic bonding in solids; (b-2 pts.) State the structure-property relationships appertaining to melting temperature, modulus of elasticity and thermal expansion in reference to the potential energy curve between to atoms bonding chemically; on what does the modulus of elasticity depend?; (c-2 pts.)Why do solids (both brittle and ductile) exhibit very higher strength under compression than in tension?
Answers
When a solid is subjected to tension, the bonds between the particles are stretched, making them easier to break. This explains why solids exhibit greater strength under compression than under tension.
Why do solids (both brittle and ductile) exhibit very higher strength under compression than in tension?
Ionic, covalent, and metallic bonding in solids Ionic bonds form between a metal and a nonmetal. Ions are produced when an electron is lost by a metal and obtained by a nonmetal. Ionic bonds are the attraction between these positive and negative ions. Covalent bonds occur when two or more nonmetals share valence electrons. This is done in order to gain a full outer shell of electrons, which is more stable. Metallic bonds are the attraction between metal atoms and the valence electrons that are delocalized throughout the metal. This explains why metals are good conductors of electricity and have high melting and boiling points.(b) Structure-property relationships appertaining to melting temperature, modulus of elasticity and thermal expansion, and the dependency of the modulus of elasticity The melting temperature is proportional to the strength of the forces holding the particles together in the solid. Metals have a higher modulus of elasticity than ionic and covalent bonds due to their metallic bonding structure. Thermal expansion is proportional to the strength of the bonds between the particles in a solid. Ionic bonds have the highest energy and are the most difficult to break. When a bond is broken, thermal energy is released, which results in thermal expansion. The strength of solids is determined by the strength of their bonding. When a solid is subjected to compression, the bonds between the particles are compressed, resulting in increased strength.
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Related Questions
Show the last name, street address, and postal code for all customers in New York, NY. Give the PostalCode column an alias of ZipCode. Hint: New York is the city, NY is the state.
Answers
To answer your question, I will assume that you are working with a SQL database and have a table named "customers" with the following columns: Last Name, Street Address, City, State, and PostalCode.
Here's the SQL query you would use to show the last name, street address, and postal code for all customers in New York, NY, and give the Postal Code column an alias of Zip Code:
```sql
SELECT Last Name, Street Address, Postal Code AS Zip Code
FROM customers
WHERE City = 'New York' AND State = 'NY';
```
Step-by-step explanation:
1. `SELECT Last Name, Street Address, Postal Code AS Zip Code`: This part of the query selects the Last Name, Street Address, and Postal Code columns from the customers table. The "AS Zip Code" is used to give the Postal Code column an alias, so it will be displayed as "Zip Code" in the results.
2. `FROM customers`: This part of the query specifies the table from which we are retrieving the data, which is the "customers" table.
3. `WHERE City = 'New York' AND State = 'NY'`: This is the filter condition for the query. We only want to display the records where the City column has the value 'New York' and the State column has the value 'NY'.
When you run this query, it will return a table with the last name, street address, and postal code (displayed as Zip Code) for all customers in New York, NY.
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What grade did the american society of civil engineering give to the us infrastructure in 2013?.
Answers
The American society of civil engineering give us infrastructure in 2013 A grade of D
The overall score for America's infrastructure in all 16 categories is D+ in the 2013 Report Card, which is slightly higher than the D in ASCE's 2009 Report Card.
Six infrastructure sectors profited through increased private sector investment, focused initiatives in municipalities and states to perform renovations or repairs, or a one-time boost in government money.
Importantly, it is the first time the grades have increased since the American Society of Civil Engineers initially rated the quality of America's network in 1998. Nevertheless, a D+ rating remains unacceptable.
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Technician a says amperage is the same at any point in a series circuit. technician b says the total resistance is the sum of all resistance in a series circuit. who is correct?
Answers
Consequently, based on the explanations provided, Technician B is correct in asserting that the total resistance in a series circuit is the sum of all the resistances within that circuit.
Technician A and Technician B present two different statements regarding series circuits. Technician A claims that amperage is consistent at any point in a series circuit, while Technician B argues that the total resistance is the cumulative sum of all resistances in a series circuit.
According to Technician A, in a series circuit, where there is only one path for current flow, the amperage remains constant throughout the circuit. This implies that the current is identical at any point in the circuit. Thus, Technician A's statement regarding amperage in a series circuit is accurate.
Technician B's statement pertains to the total resistance in a series circuit. In this type of circuit, the total resistance is obtained by summing up all the individual resistances within the circuit. When resistors are connected in series, their resistances add up. Technician B's claim about the total resistance being the sum of all resistances in a series circuit is correct.
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2. The following segment of carotid artery has an inlet velocity of 50 cm/s (diameter of 15 mm). The outlet has a diameter of 11mm. The pressure at inlet is 110 mm of Hg and pressure at outlet is 95 mm of Hg. Determine the forces required to keep the artery in place (consider steady state, ignore the mass of blood in the vessel and the mass of blood vessel; blood density is 1050 kg/m3)
Answers
This question is incomplete, the missing diagram is uploaded along this answer below.
Answer:
the forces required to keep the artery in place is 1.65 N
Explanation:
Given the data in the question;
Inlet velocity V₁ = 50 cm/s = 0.5 m/s
diameter d₁ = 15 mm = 0.015 m
radius r₁ = 0.0075 m
diameter d₂ = 11 mm = 0.011 m
radius r₂ = 0.0055 m
A₁ = πr² = 3.14( 0.0075 )² = 1.76625 × 10⁻⁴ m²
A₂ = πr² = 3.14( 0.0055 )² = 9.4985 × 10⁻⁵ m²
pressure at inlet P₁ = 110 mm of Hg = 14665.5 pascal
pressure at outlet P₂ = 95 mm of Hg = 12665.6 pascal
Inlet volumetric flowrate = A₁V₁ = 1.76625 × 10⁻⁴ × 0.5 = 8.83125 × 10⁻⁵ m³/s
given that; blood density is 1050 kg/m³
mass going in m' = 8.83125 × 10⁻⁵ m³/s × 1050 kg/m³ = 0.092728 kg/s
Now, using continuity equation
A₁V₁ = A₂V₂
V₂ = A₁V₁ / A₂ = (d₁/d₂)² × V₁
we substitute
V₂ = (0.015 / 0.011 )² × 0.5
V₂ = 0.92975 m/s
from the diagram, force balance in x-direction;
0 - P₂A₂ × cos(60°) + Rₓ = m'( V₂cos(60°) - 0 )
so we substitute in our values
0 - (12665.6 × 9.4985 × 10⁻⁵) × cos(60°) + Rₓ = 0.092728( 0.92975 cos(60°) - 0 )
0 - 0.6014925 + Rₓ = 0.043106929 - 0
Rₓ = 0.043106929 + 0.6014925
Rₓ = 0.6446 N
Also, we do the same force balance in y-direction;
P₁A₁ - P₂A₂ × sin(60°) + R\(_y\) = m'( V₂sin(60°) - 0.5 )
we substitute
⇒ (14665.5 × 1.76625 × 10⁻⁴) - (12665.6 × 9.4985 × 10⁻⁵) × sin(60°) + R\(_y\) = 0.092728( 0.92975sin(60°) - 0.5 )
⇒ 1.5484 + R\(_y\) = 0.092728( 0.305187 )
⇒ 1.5484 + R\(_y\) = 0.028299
R\(_y\) = 0.028299 - 1.5484
R\(_y\) = -1.52 N
Hence reaction force required will be;
R = √( Rₓ² + R\(_y\)² )
we substitute
R = √( (0.6446)² + (-1.52)² )
R = √( 0.41550916 + 2.3104 )
R = √( 2.72590916 )
R = 1.65 N
Therefore, the forces required to keep the artery in place is 1.65 N
can you solve this question
Answers
Answer:
eojcjksjsososisjsiisisiiaodbjspbcpjsphcpjajosjjs ahahhahahahahahahahahahahahahhhahahahaahahhahahahahaahahahahaha
how fast does a rocket need to be traveling to excape our earths gravitational pull?
Answers
Answer:
25,000 mph or around 40,000 kph
Explanation:
all depends on the altitude and weather conditions but this is average
The flow between two infinitely flat parallel plates displays a parabolic profile, and is called plane Poiseulle flow.
a. True
b. False
Answers
Answer:
a. True
Explanation:
The study of fluids in a state of rest or in motion and the forces involved in it is called fluid mechanics. Fluid mechanics has a wide range of applications in the field of mechanical engineering as well as civil engineering.
When we study the flow of fluid between any two flat plates that is indefinitely flat and is parallel, the flow of the fluid is known as plane Poiseulle flow. The profile of a plane Poiseulle flow is parabolic.
The velocity profile of a plane Poiseulle flow is :
\($\frac{u(y)}{U_{max}}=1-\left(\frac{2y}{h}\right)^2$\)
Thus the answer is TRUE.
Select the correct text in the passage.
Identify which of the following sentences describes the working of a piezoelectric gauge.
Answers
Answer:
The gauge converts the charge into a measurable electrical signal.
Explanation:
trust me
Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 10 MPa, 450°C, and 80 m/s, and the exit conditions are 10 kPa, 92% quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s.
Determine:
(a) the change in kinetic energy
(b) the power output
(c) the turbine inlet area
Answers
Answer:
a) The change in Kinetic energy, KE = -1.95 kJ
b) Power output, W = 10221.72 kW
c) Turbine inlet area, \(A_1 = 0.0044 m^2\)
Explanation:
a) Change in Kinetic Energy
For an adiabatic steady state flow of steam:
\(KE = \frac{V_2^2 - V_1^2}{2} \\\).........(1)
Where Inlet velocity, V₁ = 80 m/s
Outlet velocity, V₂ = 50 m/s
Substitute these values into equation (1)
\(KE = \frac{50^2 - 80^2}{2} \\\)
KE = -1950 m²/s²
To convert this to kJ/kg, divide by 1000
KE = -1950/1000
KE = -1.95 kJ/kg
b) The power output, w
The equation below is used to represent a steady state flow.
\(q - w = h_2 - h_1 + KE + g(z_2 - z_1)\)
For an adiabatic process, the rate of heat transfer, q = 0
z₂ = z₁
The equation thus reduces to :
w = h₁ - h₂ - KE...........(2)
Where Power output, \(W = \dot{m}w\)..........(3)
Mass flow rate, \(\dot{m} = 12 kg/s\)
To get the specific enthalpy at the inlet, h₁
At P₁ = 10 MPa, T₁ = 450°C,
h₁ = 3242.4 kJ/kg,
Specific volume, v₁ = 0.029782 m³/kg
At P₂ = 10 kPa, \(h_f = 191.81 kJ/kg, h_{fg} = 2392.1 kJ/kg\), x₂ = 0.92
specific enthalpy at the outlet, h₂ = \(h_1 + x_2 h_{fg}\)
h₂ = 3242.4 + 0.92(2392.1)
h₂ = 2392.54 kJ/kg
Substitute these values into equation (2)
w = 3242.4 - 2392.54 - (-1.95)
w = 851.81 kJ/kg
To get the power output, put the value of w into equation (3)
W = 12 * 851.81
W = 10221.72 kW
c) The turbine inlet area
\(A_1V_1 = \dot{m}v_1\\\\A_1 * 80 = 12 * 0.029782\\\\80A_1 = 0.357\\\\A_1 = 0.357/80\\\\A_1 = 0.0044 m^2\)
Financial options school leavers may consider to pay tertiary education
Answers
There are several financial options that school leavers may consider to pay for tertiary education. Here are some common options:
Scholarships and grants: School leavers can research and apply for scholarships and grants offered by universities, government bodies, private organizations, and foundations. These can provide financial assistance without the need for repayment.Student loans: Many students opt for student loans to cover their educational expenses. These loans are provided by banks, financial institutions, or government programs. It's important to carefully consider the terms and interest rates associated with the loans before making a decision.Work-Study programs: Some universities offer work-study programs that allow students to work part-time on campus while studying. This can help cover some of the educational costs.Savings and family support: School leavers can utilize their personal savings or rely on support from family members to fund their education. This may involve using funds from a dedicated education savings account or seeking financial assistance from parents or guardians.
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The complete question is: Discuss three financial option school leavers may consider to pay for tertiary education
______ is a function that removes specific identifying information from query results, such as last name and telephone number, but creates some sort of unique identifier so that analysts can detect connections between queries. Anonymization data transformation immutable audit selective revelation
Answers
In order for analysts to find links between searches, anonymization functions remove specific identifying information from query results, such as last name and phone number, but create some sort of unique identifier.
Data anonymization is the process of obscuring or encrypting identifiers that link a specific person to stored data in order to protect private or sensitive information. For instance, you can use a data anonymization technique to keep the data while obscuring the source for Personally Identifiable Information (PII) like names, social security numbers, and addresses.
Attackers can employ de-anonymization techniques to track the anonymization process even after you have removed all identifiers from the material. De-anonymization procedures can cross-reference the sources and reveal personal information because data typically goes through numerous sources, some of which are accessible to the public.
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Pls answer and I will give a like!
Answers
Answer:
a
Explanation:
Briefly explain thermal expansion using the potential energy–versus–interatomic spacing curve.
Answers
As the temperature of the material increases, the potential energy of the molecules increases. Thermal expansion occurs due to changes in temperature, and interatomic distances increase as potential energy increases.
What are the uses of Thermal Expansion?Thermal expansion is used in a variety of applications such as rail buckling, engine coolant, mercury thermometers, joint expansion, and others.
It is to be noted that an application of the concept of liquid expansion in everyday life concerns liquid thermometers. As the heat rises, the mercury or alcohol in the thermometer tube moves in only one direction. As the heat decreases, the liquid moves back smoothly.
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An aqueous alumina slip containing 45 volume % alumina particles is cast into a gypsum mold. The ceramic particles are monodisperse with a size of 1 um and they are well-stabilized. The as-cast layer is 65% of theoretical density. The gypsum mold has a specific resistance of 2 x 100 cm2 and a void fraction of 0. 5. The total pressure drop from the slip to the saturation interface in the mold is 0. 1 MPa. Plot the cast layer thickness as a function of time. Predict the time needed to cast a 1 mm thick layer and the position of the saturation front in the gypsum mold at that time
Answers
In this scenario, we have an aqueous alumina slip containing 45 volume % alumina particles being cast into a gypsum mold. The alumina particles are monodisperse with a size of 1 µm and well-stabilized.
The as-cast layer has a 65% theoretical density, and the gypsum mold has a specific resistance of 2 x 100 cm² and a void fraction of 0.5. The total pressure drop from the slip to the saturation interface in the mold is 0.1 MPa.To plot the cast layer thickness as a function of time, we can utilize Darcy's Law, which governs the flow of a fluid through a porous medium. However, without specific numerical values for the slip's viscosity and the mold's permeability, it is not possible to directly calculate the layer thickness and time relationship.
Nevertheless, to predict the time needed to cast a 1 mm thick layer and the position of the saturation front in the gypsum mold, we would need to perform experiments or numerical simulations based on the given parameters, such as particle size, slip composition, and mold properties. These results could then be used to develop an empirical or theoretical relationship between cast layer thickness and time, enabling accurate predictions for the given conditions.
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Which of the following is false about most machine learning models?
They require numbers or collections of numbers as input.
They are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc)
They are trained by iteratively adjusting their parameters to minimize a loss function.
Once trained, their model parameters can be used to make new predictions in a process called a “model inference algorithm.”
Answers
The false statement about most machine learning models is that: B. they are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc).
What is machine learning?Machine learning (ML) is also referred to as deep learning or artificial intelligence (AI) and it can be defined as a subfield in computer science which is typically focused on the use of data-driven techniques (methods), computer algorithms, and technologies to develop a smart computer-controlled robot with an ability to automatically perform and manage tasks that are exclusively meant for humans or solved by using human intelligence.
Generally speaking, machine learning models are designed and developed to accept numerical data (numbers) or collections of numerical data (numbers) as an input.
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how to change a fuel fiter
Answers
assumptions when trying to predict stream discharge using flow accumulation values. what are some other important variables that are not included in this model
Answers
The correct answer is an essential input for many hydrological and topographic accumulation analyses such as stream channel extraction, stream channel ordering and sub-watershed delineation.
The Flow accumulation tool calculates accumulated flow as the accumulated weight of all cells flowing into each downslope cell in the output raster. If no weight raster is provided, a weight of 1 is applied to each cell, and the value of cells in the output raster is the number of cells that flow into each cell.
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What are door knob parts called?
Answers
Every handle is unique. Whether you choose a doorknob, a lever-on-backplate, or a lever-on-rose,
The lever or knob, the latch mechanical, the strike plate, and the door lock, if your door requires one, are the four basic parts that are common to all of them. A wheel and axle is a type of simple mechanism that is used in doorknobs. The circular wheel and axle that make up the wheel and axle machine are designed to rotate in tandem. This straightforward device functions in a manner similar to a premium lever. Since this plate is located behind the lever or knob, it is known as a backplate. If a backplate is circular in shape, it is often referred to as a rosette or rose.
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Technician A says that when the malfunction indicator light or service engine light is on you should retrieve the diagnostic trouble code and follow the manufacturers recommended procedure. Technician B says that all obd-ll monitors must have the enabled criteria achieved before a test is performed. Who is correct?
Answers
Answer:both
Explanation:
The rafter is fastened to the outside wall so that the plumb cut in the birdsmouth is tight to the exterior wall sheathing
Select one:
O True
O False
Answers
Question 40 and the next Question 41
Answers
Answer:
there's no photo? but I'm willing to help
What are the two tools used to create an HTML code? Name one example of each tool.
Answers
Answer:
please mark me as BRAINLIEST
Explanation:
There are so many software packages available to develop HTML. The software packages can be grouped into two main categories: text-based (or code-based) editors.
...
WYSIWYG editors
Macromedia Dreamweaver.
Microsoft FrontPage.
Adobe GoLive.
In the mesh created, you should have 1000 elements and 1111 nodes. How many values will Fluent have to determine directly by solving a system of algebraic equations? Please input answers as an integer (eg. 1, or 80, or 150, etc.)
Answers
The number of values that the Fluent will have when 1000 elements and 1111 nodes are created is 20
What will the number of values be?Number of elements along x direction is m and along y direction is n.
So, m × n = 1000 ( Elements)
And m × n + m + n + 1 = 1111 (Nodes)
Or, m + n = 1000
If m = 100 then n = 10. These values satisfy both the equations.
Now, for each element there will be one velocity component, pressure or temperature. So, 1000 algebraic simultaneous equations will be there for each case.
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The inception of cavitation
Answers
Answer:
The overview of the given question is described in the explanation segment below.
Explanation:
Cavitation inception or emergence happens whenever the localized temperature decreases far enough underneath the saturated or dissolved vapor pressure, a quantity determined by the thermal strength or conductivity of the fluid beyond a certain point (temperature).To respond to induce cavitation emergence, the cavitation "bubbles" usually allow a layer on which they could be nucleated.A 5-m-long, 4-m-high tank contains 2.5-m-deep water when not in motion and is open to the atmosphere through a vent in the middle. The tank is now accelerated to the right on a level surface at 2 m/s2. Determine the maximum gage pressure in the tank. Mark that point at the interior bottom of the tank. Draw the free surface at this acceleration.
Answers
Answer: hello your question lacks the required diagram attached below is the diagram
answer : 29528.1 N/m^2
Explanation:
Given data :
dimensions of tank :
Length = 5-m
Width = 4-m
Depth = 2.5-m
acceleration of tank = 2m/s^2
Determine the maximum gage pressure in the tank
Pa ( pressure at point A ) = s*g*h1
= 10^3 * 9.81 * 3.01
= 29528.1 N/m^2
attached below is the remaining part of the solution
Water that has evaporated returns to earth as
Answers
Answer:
rain
Explanation:
evaoration causes clouds
clouds condense and rain
Answer:
rain
Explanation:
the part of a drill that holds the drill bit in place is called the
Answers
Answer:
The part of a drill that holds the drill bit in place is called the chuck.
What is the purpose of the lines painted on the shop floor?
Answers
If it is an animal then it is an organism convert it in first order logic
Answers
Answer:
This is not an engineering question.
Explanation:
The market for college textbooks is illustrated in the graph below. In the market for textbooks, the current price of a textbook is $125. Which of the following statements best describes the current and future market conditions for textbooks?
Answers
Answer:
Option D is correct.
The market for textbooks has a shortage. There will be an upward pressure on price, which will cause quantity demanded to fall and quantity supplied to rise.
Explanation:
The complete question is attached to this solution.
Note that
- The quantity demanded is the negative sloping line in colour blue indicating that the quantity demanded increases as the price of the commodity (textbook) falls and the quantity demanded rises as the price of the textbook falls.
- The quantity supplied is the positive sloping line in colour red/orange indicating that the quantity supplied decreases as the price of the commodity (textbook) falls and the quantity supplied increases as the price of the textbook falls.
The quantity demanded and the quantity supplied balance each other and cross path at a point called the equilibrium point.
The price at this point is called the equilibrium price and the quantity at this point is the equilibrium quantity.
For this question, the equilibrium price = $150 and the equilibrium quantity that matches quantity demanded with quantity supplied = 500.
At prices greater than the equilibrium price, the quantity demanded falls and the quantity supplied increases, hence, there is a surplus of the commodity (textbook) as the quantity of textbooks supplied is way more than the quantity demanded and there is more than required textbooks.
At prices lower than the equilibrium price, the quantity demanded increases and the quantity supplied reduces, hence, there is a shortage of commodity (textbook) as all of the goods supplied are totally bought with extra demand remaining.
When there is a surplus or shortage, the market forces that are responsible for price fixing and quantity demanded work together to take the market back to equilibrium.
So, when the price is higher than equilibrium price and there is a surplus, the market works to reduce the price of the commodity so that quantity demanded can rise and quantity supplied can fall to counter this surplus.
When the price is lower than equilibrium price and there is a shortage, the market works to increase the price of the commodity so that quantity demanded can fall and quantity supplied can rise to counter this shortage.
The price of the textbook in the question, $125, is lower than the equilibrium price, $150, hence, there will be a shortage of textbooks because the quantity demanded, at this price, is higher than the quantity that will be supplied.
So, there is then a pressure on the price to rise back so that the quantity demanded reduces and the quantity supplied increases.
Hope this Helps!!!
