Homework Answers
Examples of semi-crystalline polymers are linear polyethylene, polytetrafluoroethylene,,polyethylene terephthalate etc. The crystallization of polymers is a process which is associated with the partial alignment of their molecular chains. These polymers typically displays necking behaviour (large amount of strain localizes disproportionately on a specific area) and a yield point in tensile stress/strain curve. When polymers absorbs energy it causes deformation leading to yield points.
Thus for semi-crystalline polymers these deformation mechanism can cause destruction of microns and its orientation leading to colloidal scale morphologies. While analysing the modulus versus temperature cureve of polyethyelene the plot given above is obtained.
Add Answer to:
Question 5 (1 point) Explain why (in a few sentences) the polymer with the modulus vs...
The graph below shows the stress vs. strain curves for thredifferent materials(A, 8, & c) obtaine...
The graph below shows the stress vs. strain curves for thredifferent materials(A, 8, & c) obtained from a tensile test 3001 A 275 250 225 200 175 150 125 100 75 50 x-Break 25 0.00 0.01 002 0.03 004 005 0.06 007 0.08 0.09 0.10 Strain Using the curves above: a) Estimate the Young's Modulus for materials A, B, and C b) Estimate the yield strength and tensile strength (if any) of materials A, B, and C c) Using what...
In general, as the molecular weight of a sample increases, its strength properties such as Young's...
In general, as the molecular weight of a sample increases, its strength properties such as Young's modulus and tensile strength: A) There is no relationship between these properties B) Decrease C) Increase Save Question 33 (1 point) A polymer sample cooled slowly from 160°C to room temperature using natural convection is likely to be: A) 100% crystalline B) Semi-crystalline C) Transparent D) Semi-conducting E) 100% amorphous
Exercise 6. By looking at this graph respond to the following questions and justify your answer...
Exercise 6. By looking at this graph respond to the following questions and justify your answer Temperature (°F) 250 300 350 150 200 400 450 106 Relaxation modulus, E,(10) (MPa) Relaxation modulus (psi) 100 200 150 Temperature (°C) a) Among polymer A, B, and C, which one does not display a melting temperature? How is this type of polymer generally called, and what is the process that prevents them from melting? (2 points) b) Among A, B, and C, which...
Path: P 5 points QUESTION 6 In just a few sentences, explain why Bacon's Rebellion is...
Path: P 5 points QUESTION 6 In just a few sentences, explain why Bacon's Rebellion is crucial to understand the rise of racism in America.
1. Explain in a few sentences (100 words or less) why the US Treasury market is...
1. Explain in a few sentences (100 words or less) why the US Treasury market is important generally and specifically to the global financial markets. 2.Explain in a few sentences (100 words or less) if you believe the purpose of a corporation should be to enhance shareholder wealth only. 3.Explain in a few sentences (100 words or less) the main differences between the 'primary' and 'secondary' financial markets. Mention though which market a company would actually receive cash and give...
Inductance Question (a) Explain, with a sketch and a few sentences, why the currents induced in...
Inductance Question (a) Explain, with a sketch and a few sentences, why the currents induced in a superconductor are oriented in such a way as to levitate a small piece of superconducting material placed on top of the north pole of a permanent magnet. (b) What happens if the superconductor is placed on top of the south pole of a permanent magnet?
Material Science Help 1. Select the element in the periodic table that is commonly used as...
Material Science Help 1. Select the element in the periodic table that is commonly used as an n-type dopant in a silicon semiconductor: a. C b. B c. P d. O 2. The compound with the smallest cation is: a. AuCl b. CaF2 c. ScCl3 d. LiBr 3. The percentage ionic character of MgO is: a. 73 b. 68 c. 81 d. 27 4. The expression for the volume of a unit cell in a BCC crystalline structure is: a....
Question: Create Young’s modulus-melting point (E-Tm) chart (level 2) for metals and alloys. Use ‘guideline’ function...
Question: Create Young’s modulus-melting point (E-Tm)
chart (level 2) for metals and alloys. Use ‘guideline’ function to
determine which slope among 0.5, 1 and 2 in the E-Tm
chart best describes the dependence between E and Tm.
Justify this dependence from the origin of these two
properties.
I had already drawn the picture. Could you explain the
reason why Yong's modulus and melting point have a linear
relationship? Justify this dependence from the origin of these two
properties.!!!!
- 0...
this is a microeconomics question Question 9: What two conditions are met when a consumer in...
this is a microeconomics question
Question 9: What two conditions are met when a consumer in maximizing utility? Question 10: Sally consumes only two goods, shoes and "everything else”. For five different shopping trips (each with different prices), the prices and Sally's marginal utilities are shown below. Shoes Everything Else MU Prices ($) MU Prices ($) Trip 1 125 250 50 100 Trip 2 100 200 50 100 Trip 3 75 150 50 100 Trip 4 50 100 50 100...
3 (15 points) A bent circular cantilever beam of uniform diameter of 25 mm is shown in igure below. The beam is made from a material with elastic modulus is 70 GPa, the tensile strength is 250 M...
3 (15 points) A bent circular cantilever beam of uniform diameter of 25 mm is shown in igure below. The beam is made from a material with elastic modulus is 70 GPa, the tensile strength is 250 MPa, and the ultimate strength is 300 MPa. 250 mm A. 150 mm z Zz. 50N V (z direction) 100 N (a) (5 points) What are the stresses in the beam at point A? (b) (10 points) Based on your calculations in (a),...
The graph below shows the stress vs. strain curves for thredifferent materials(A, 8, & c) obtained from a tensile test 3001 A 275 250 225 200 175 150 125 100 75 50 x-Break 25 0.00 0.01 002 0.03 004 005 0.06 007 0.08 0.09 0.10 Strain Using the curves above: a) Estimate the Young's Modulus for materials A, B, and C b) Estimate the yield strength and tensile strength (if any) of materials A, B, and C c) Using what...
In general, as the molecular weight of a sample increases, its strength properties such as Young's modulus and tensile strength: A) There is no relationship between these properties B) Decrease C) Increase Save Question 33 (1 point) A polymer sample cooled slowly from 160°C to room temperature using natural convection is likely to be: A) 100% crystalline B) Semi-crystalline C) Transparent D) Semi-conducting E) 100% amorphous
Exercise 6. By looking at this graph respond to the following questions and justify your answer Temperature (°F) 250 300 350 150 200 400 450 106 Relaxation modulus, E,(10) (MPa) Relaxation modulus (psi) 100 200 150 Temperature (°C) a) Among polymer A, B, and C, which one does not display a melting temperature? How is this type of polymer generally called, and what is the process that prevents them from melting? (2 points) b) Among A, B, and C, which...
Path: P 5 points QUESTION 6 In just a few sentences, explain why Bacon's Rebellion is crucial to understand the rise of racism in America.
Question: Create Young’s modulus-melting point (E-Tm)
chart (level 2) for metals and alloys. Use ‘guideline’ function to
determine which slope among 0.5, 1 and 2 in the E-Tm
chart best describes the dependence between E and Tm.
Justify this dependence from the origin of these two
properties.
I had already drawn the picture. Could you explain the
reason why Yong's modulus and melting point have a linear
relationship? Justify this dependence from the origin of these two
properties.!!!!
- 0...
this is a microeconomics question
Question 9: What two conditions are met when a consumer in maximizing utility? Question 10: Sally consumes only two goods, shoes and "everything else”. For five different shopping trips (each with different prices), the prices and Sally's marginal utilities are shown below. Shoes Everything Else MU Prices ($) MU Prices ($) Trip 1 125 250 50 100 Trip 2 100 200 50 100 Trip 3 75 150 50 100 Trip 4 50 100 50 100...
3 (15 points) A bent circular cantilever beam of uniform diameter of 25 mm is shown in igure below. The beam is made from a material with elastic modulus is 70 GPa, the tensile strength is 250 MPa, and the ultimate strength is 300 MPa. 250 mm A. 150 mm z Zz. 50N V (z direction) 100 N (a) (5 points) What are the stresses in the beam at point A? (b) (10 points) Based on your calculations in (a),...
Most questions answered within 3 hours.
-
Do we have a duty of national loyalty in business? What is the
major argument in...
asked 9 minutes ago -
The test statistic used in the F test for the equality of two
variances is calculated...
asked 4 minutes ago -
compare the international treatment of segment reporting to the
us gaap treatment
asked 5 minutes ago -
A statistics student finds herself struggling with a newspaper
article stating that only eighteen percent of...
asked 39 minutes ago -
People with beriberi, a disease caused by a thiamin deficiency,
have elevated levels of blood pyruvate...
asked 26 minutes ago -
PYTHON Programming Exercise 2: Create a Simple Cost Calculator
Write a program that displays input fields...
asked 32 minutes ago -
1.Seki agreed that Groupon could sell 18 hot air
balloon rides on his Magical Adventures company...
asked 33 minutes ago -
A cohort study is conducted to determine whether smoking is
associated with an increased risk of...
asked 38 minutes ago -
Create the pseudo-code/flowchart for an application class named
Monogram. Its main() method inputs three variables that...
asked 39 minutes ago -
How many liters of water are required to dissolve 1.00 g of
silver chromate? Express your...
asked 42 minutes ago -
Hot: T_inlet = 80, T_out = 65
Cold: T_inlet = 10, T_out = 25
Explain in...
asked 42 minutes ago -
Two protons fly in different directions and collide. They both
have a total energy of 1.5...
asked 51 minutes ago