Homework Answers
Cored structure are formed due to Non equilibrium cooling rate.
Cooling rate is different at centre and outer edge hence grain boundary formation take place which is responsible for cored structure.
Equilibrium cooling produce uniform structure throughout the specimen.
a.
When a cored structure is heated, grain boundary regions will melt first and centre will melt at last.
The melting temperature of grain boundary is less then as compared to centre hence grain boundary melts first and centre at last.
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When do cored structures (grains) form during cooling of an alloy – Equilibrium or non-equilibrium cooling?...
1. When do cored structures (grains) form during cooling of an alloy – Equilibrium or non-equilibrium...
1. When do cored structures (grains) form during cooling of an alloy – Equilibrium or non-equilibrium cooling? Why? -(4 points) a)Note: Explain what component (higher or lower melting point) forms the core (center) and the boundary (outer edges) of the cored structure (grain)?
When do cored structures (grains) form during cooling of an alloy – Equilibrium or non-equilibrium cooling?...
When do cored structures (grains) form during cooling of an alloy – Equilibrium or non-equilibrium cooling? Why? ..........(4 points) a)Note: Explain what component (higher or lower melting point) forms the core (center) and the boundary (outer edges) of the cored structure (grain)? Draw a single repeat unit of each; polyvinylchloride (PVC) and polystyrene (PS). Which is more likely to be crystalline, linear syndiotactic PVC or linear atactic PS? Briefly explain..... (4 points)
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed on page 15.) Experiment 2 Intermolecular Forces There are three general types of intermolecular forces. All substances exhibit London Dispersion Forces (LDF), and they are generally the weakest of the three types. These London forces are due to the attractions between small, temporary dipoles that arise from the constant, random movement of the electrons in a substance. As molar mass increases, the size of...
I need help to write a nice introduction for experiment 6 please ( no hands write ) typing Thank you HEAT TREATMENT OF STEELS EXPERIMENT 6 EXPERIMENT 6 HEAT TREATMENT OF STEELS THEORY The Ef...
I need help to write a nice introduction for experiment 6
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HEAT TREATMENT OF STEELS EXPERIMENT 6 EXPERIMENT 6 HEAT TREATMENT OF STEELS THEORY The Effect of Cooling Rate One of the most convenient methods for controlling the properties of a given steel, i.e., a steel whose composition is already fixed, consists of austenizing the steel and ten cooling to room temperature at some predetermined rate. A variation of cooling rates...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
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summatize the following info and break them into differeng key points. write them in yojr own...
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1. When do cored structures (grains) form during cooling of an alloy – Equilibrium or non-equilibrium cooling? Why? -(4 points) a)Note: Explain what component (higher or lower melting point) forms the core (center) and the boundary (outer edges) of the cored structure (grain)?
When do cored structures (grains) form during cooling of an alloy – Equilibrium or non-equilibrium cooling? Why? ..........(4 points) a)Note: Explain what component (higher or lower melting point) forms the core (center) and the boundary (outer edges) of the cored structure (grain)? Draw a single repeat unit of each; polyvinylchloride (PVC) and polystyrene (PS). Which is more likely to be crystalline, linear syndiotactic PVC or linear atactic PS? Briefly explain..... (4 points)
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed on page 15.) Experiment 2 Intermolecular Forces There are three general types of intermolecular forces. All substances exhibit London Dispersion Forces (LDF), and they are generally the weakest of the three types. These London forces are due to the attractions between small, temporary dipoles that arise from the constant, random movement of the electrons in a substance. As molar mass increases, the size of...
I need help to write a nice introduction for experiment 6
please ( no hands write ) typing
Thank you
HEAT TREATMENT OF STEELS EXPERIMENT 6 EXPERIMENT 6 HEAT TREATMENT OF STEELS THEORY The Effect of Cooling Rate One of the most convenient methods for controlling the properties of a given steel, i.e., a steel whose composition is already fixed, consists of austenizing the steel and ten cooling to room temperature at some predetermined rate. A variation of cooling rates...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? forms coloured compounds conducts electricity when solid can be used has low density as a catalyst X A X X Xx 2. (0620-W 2012-Paper 1/1-Q20) The diagram shows an outline of the Periodic Table. U V W X Y Which of the elements U, V, W, X and Y would react together in the ratio of...
Read the attached article and answer the following
questions.
1. What is the role of potassium in blood pressure?
2. Looking back at last weeks Super Tracker report - do you meet
the 4700mg daily target for potassium?
3. Do you meet the 400mg daily target for magnesium?
4. Research shows that hypertension and type 2 diabetes can be
prevented by dietary choices. List 3 ways that employers,
government, doctors, etc. (you can use another group ) can either
motivate...
answer the questions based on the informations on the 3 pictures
please:
What are the essential responsibilities of a structural
designer or engineer in designing a structure?
What factors would you consider and why when planning the
design of a building structure?
You are the project team leader for the design of a single
family house in southwest Houston area. Discuss the types of
structural loads you think are important and explain
why.
d) Thermal load changes in perature cause...
write a detailed summary in an organized format. It must include
3-4 key points of the controversy. Break up your summary in 3-4
paragraphs.
Must include specific reasons as to why a vegetarian diet can be
better and or worse than the meat heavy diets?
Explain briefly using examples how reading this controversy has
helped you in making better dietary choices in future?
CONTROVERSY 6 Table of Contents Vegetarian and Meat-Containing Diets: What Are the Benefits and Pitfalls? Notebook LO...
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