Homework Answers
(a). In syndiotactic polymers the substituents occupies the alternate positions along the polymer chain. But in atactic polymers the substituents occupies random positions along the polymer chain.
Due to the partial regularity in syndiotactic polystyrenes they can be partially crystallised while because of long range disorder of atactic polystyrene they are amorphous in nature.
(b).Isotactic polypropylene will crystallize more readily because in isotactic polymers the substituents are placed on the same side of the polymer chain. This is responsible for their long range order which imparts crystallinity in them.
Random distribution in atactic polymers makes them become amorphous with very less degree of crystallinity.
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A.) It is found that syndiotactic polystyrene may be partially crystallized whereas atactic polys...
Please answer the polymers questions below clearly. 1. Discuss (no more than one page) the dif-...
Please answer the polymers questions below clearly.
1. Discuss (no more than one page) the dif- ference in the nature of the glass transition and the crystalline melting point. 2. Explain (no more than one page) why polymers crystallize in a folded chain form. (A picture is worth a thousand words!) 3. In Figure 10-50 in the text, the chain struc- tures of isotactic polystyrene and isotactic polypropylene were compared. We then asked you which of these polymers has the...
PT. In the system shown below material A has a conductivity which increases with x, whereas...
PT. In the system shown below material A has a conductivity which increases with x, whereas material B has a constant thermal conductivity and it's cross sectional area decreases with x The left hand side and right hand side temperatures are maintained at 100 °C and 50 °C respectively. Under these conditions, (a) show (draw) qualitatively (without doing any calculations) the temperature variation in both materials as function of x. You may assume that the flow of heat in the...
Let h1(s) be an admissible A* heuristic. Let h2(s)=2*h1(s) Is the solution found by A* tree...
Let h1(s) be an admissible A* heuristic. Let h2(s)=2*h1(s)
Is the solution found by A* tree search with h2 guaranteed to
be an optimal solution? Justify your answer
Is the solution found by A* tree search with h2 guaranteed to
have a cost at most twice as much as the optimal path? Justify your
answer
Consider the state space graph shown below in which some of the
states are missing a heuristic value. Determine the possible range
for each missing...
Question 3 A study of college freshmen's study habits found that the time (in hours) that...
Question 3 A study of college freshmen's study habits found that the time (in hours) that freshmen use to study each week follows a distribution with a mean of 7.2 hours and a standard deviation of 5.3 hours A) Can you calculate the probability that a randomly chosen freshman studies more than 9 hours? If so, do it. If not, explain why not. (4 points) B) What is the shape of the sampling distribution of the mean x for samples...
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In which of the following numeric systems can you have two versions of zero? You may...
In which of the following numeric systems can you have two versions of zero? You may select more than one answer, but note that each incorrect answer will result and get full value. (Your final score for the question can never be less than ) a partial reduction in your score for the question - so you can't just select every answer Select one or more: a. Excess-M b. Signed magnitude C. Two's complement d. One's complement Assuming a signed...
1. Modern integrated development environments (IDEs) "automatic code completion" comple- tion, gives the progra...
1. Modern integrated development environments (IDEs) "automatic code completion" comple- tion, gives the programmer a list of possible methods that they may wish to call as they are typing the current line of code. A good example of this can be found in Eclipse, the IDE for Java development (a) [3 marks] Which parts of the compiler (compilation phases) would be needed to im- plement this functionality and why? (b) [2 marks] Suppose you also wanted the auto completion to...
1. A mole of neon has a mass of about 20 g whereas a mole of...
1. A mole of neon has a mass of about 20 g whereas a mole of argon has a mass of about 40 g. If a container at 300 K contains a mole of each gas a) which particles (on average) are moving faster? b) does the ratio of the faster particles to the slower particles equal 2, 4, or (square root 2) Explain. 2. A quarter of a mole of neon gas is in equilibrium at 300 K in...
Chapter 6, Section 6.5, Question 005 PRINTER VERSION Your answer is partially correct. Try again. Assuming...
Chapter 6, Section 6.5, Question 005 PRINTER VERSION Your answer is partially correct. Try again. Assuming an interest rate of 4% compounded continuously, answer the following questions. (a) Find the future value in 10 years of a payment of $12,000 made today. Round your answer to two decimal places. 17901.90 (b) Find the future value of an income stream of $1200 per year over 10 years. Round your answer to two decimal places 112548 59 (c) Which is larger, the...
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Please answer the polymers questions below clearly.
1. Discuss (no more than one page) the dif- ference in the nature of the glass transition and the crystalline melting point. 2. Explain (no more than one page) why polymers crystallize in a folded chain form. (A picture is worth a thousand words!) 3. In Figure 10-50 in the text, the chain struc- tures of isotactic polystyrene and isotactic polypropylene were compared. We then asked you which of these polymers has the...
PT. In the system shown below material A has a conductivity which increases with x, whereas material B has a constant thermal conductivity and it's cross sectional area decreases with x The left hand side and right hand side temperatures are maintained at 100 °C and 50 °C respectively. Under these conditions, (a) show (draw) qualitatively (without doing any calculations) the temperature variation in both materials as function of x. You may assume that the flow of heat in the...
Let h1(s) be an admissible A* heuristic. Let h2(s)=2*h1(s)
Is the solution found by A* tree search with h2 guaranteed to
be an optimal solution? Justify your answer
Is the solution found by A* tree search with h2 guaranteed to
have a cost at most twice as much as the optimal path? Justify your
answer
Consider the state space graph shown below in which some of the
states are missing a heuristic value. Determine the possible range
for each missing...
Question 3 A study of college freshmen's study habits found that the time (in hours) that freshmen use to study each week follows a distribution with a mean of 7.2 hours and a standard deviation of 5.3 hours A) Can you calculate the probability that a randomly chosen freshman studies more than 9 hours? If so, do it. If not, explain why not. (4 points) B) What is the shape of the sampling distribution of the mean x for samples...
In which of the following numeric systems can you have two versions of zero? You may select more than one answer, but note that each incorrect answer will result and get full value. (Your final score for the question can never be less than ) a partial reduction in your score for the question - so you can't just select every answer Select one or more: a. Excess-M b. Signed magnitude C. Two's complement d. One's complement Assuming a signed...
1. Modern integrated development environments (IDEs) "automatic code completion" comple- tion, gives the programmer a list of possible methods that they may wish to call as they are typing the current line of code. A good example of this can be found in Eclipse, the IDE for Java development (a) [3 marks] Which parts of the compiler (compilation phases) would be needed to im- plement this functionality and why? (b) [2 marks] Suppose you also wanted the auto completion to...
Chapter 6, Section 6.5, Question 005 PRINTER VERSION Your answer is partially correct. Try again. Assuming an interest rate of 4% compounded continuously, answer the following questions. (a) Find the future value in 10 years of a payment of $12,000 made today. Round your answer to two decimal places. 17901.90 (b) Find the future value of an income stream of $1200 per year over 10 years. Round your answer to two decimal places 112548 59 (c) Which is larger, the...
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