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2. One of the cornerstones of the BCS theory superconductivity is the fact that the Debye energy ...
1. All students: (a) By combining kinetic theory with classical mechanics, Drude was able to derive...
1. All students: (a) By combining kinetic theory with classical mechanics, Drude was able to derive a sensible equation for the electrical conductivity of metals. In the case of the thermal conductivity however, Drude's theory fails. Explain why (in bullet-point form). (b) The Fermi energy of copper is ~8 eV. What fraction of electrons are above the Fermi-level at room temperature? (c) Write down a general expression for the electron density in terms of the density of states and the...
Suppose you have a very small sample of the orthorhombic crystal (orthorhombic, lattice constants 5.3 Å,...
Suppose you have a very small sample of the orthorhombic crystal (orthorhombic, lattice constants 5.3 Å, 5.4 Å and 5.5 Å). The crystal is 53 nm x 54nm x 55 nm oriented along the respective axis. [2] Show for this crystal, there are one million atoms. [2] If the crystal has dimensions 53nmx54nmx55nm, calculate the smallest and largest phonon wave vectors for this crystal (state answer in mks). [2] What exactly is a phonon and why do we use them? [2]...
#5. A) Estimate the resistivity of 2"Si (density of 1.04 x 1029 electrons/m3). The Fermi energy f...
#5. A) Estimate the resistivity of 2"Si (density of 1.04 x 1029 electrons/m3). The Fermi energy for silicon is about 5 eV. Assume A is roughly 100 times the atomic spacing, and the atomic spacing is 2.68 x 10-10 m. B) It turns out that the actual resistivity of silicon is much larger than what is predicted in Part A. Why might this be? C) What is the probability that a conduction electron in Si at 50, 000 K is...
For the following Motivational Theories, please pick ONE THEORY to answer the following 2 questions. (10...
For the following Motivational Theories, please pick ONE THEORY to answer the following 2 questions. (10 points in total) Please select 1 theory from the list: a) Maslow’s Hierarchy of Needs b) Theory X c) Herzberg’s Two Factor Theory d) Equity Theory e) Expectancy Theory Please answer the following TWO questions: 1) Please use no more than 3 sentences to explain your chosen theory. (6 points) 2) If you were a manager, please give 1 example on how to apply...
2. In the derivation of the energy levels in the hydrogen atom one commonly assumes that the nucleus is a point charge. However, in reality the size of the nucleus is of the order of Im = 10-15m. Sin...
2. In the derivation of the energy levels in the hydrogen atom one commonly assumes that the nucleus is a point charge. However, in reality the size of the nucleus is of the order of Im = 10-15m. Since this is very much smaller than the typical distance of the electron from the nucleus, which is of the order of a0-0.5A = 0.5 × 10-10m, the finite size of the nucleus can be taken into account perturbatively. (a) Assume that...
. Analyze some examples of relevant and irrelevant Cash Flows for one Saudi Company? 2 a...
. Analyze some examples of relevant and irrelevant Cash Flows for one Saudi Company? 2 a - Discuss why managers estimate a cost function and use Cost volume Profit analysis? Give numerical example of cost function and Cost Volume Profit Analysis and analyze how it will be used by managers? b- Suppose actual costs are higher than estimated cost. Analyze why you may have this difference between actual and estimated costs?
2. A manufacturer of coil springs is interested in implementing a quality control system to monitor...
2. A manufacturer of coil springs is interested in implementing a quality control system to monitor his production process. As part of this quality system, it is decided to record the number of nonconforming coil springs in each production batch of size 50. During 40 days of production, 40 batches. Here are numerical summaries of the data. 8 mean 9.325 4.485804 Let X be a random variable representing the number of nonconforming coil springs in a production batch of size...
You are given the following information for a one-year project: Planned Value (PV) - $23,000, Earned...
You are given the following information for a one-year project: Planned Value (PV) - $23,000, Earned Value (EV) - $20,000, Actual Cost (AC) = $20,000, and Budget at Completion (BAC) = $120,000. Answer each of the questions below to complete your assignment. Use the same numbers as the assignment when you give your answer, I only grade answers that correspond the assignment questions. 1. For this one-year project calculate: a. cost variance, b. schedule variance, C. cost performance index (CPI),...
PHY3708 101/3 Question5 Using the wrmi-empirical mass formula (SEMF), estimate the binding energy...
Please me with these 5 questions
PHY3708 101/3 Question5 Using the wrmi-empirical mass formula (SEMF), estimate the binding energy per ucleon for 10B AL MCo and 2 Question 1 A sealed box was found which stated to have contained an alloy composed of two metals A and B. These metals are radioactive, with half eual parts respectively and when the container was opened it was found to contain c B. Deduce the age of the alloy. lives of 12 years...
2. (1) A pendulum clock makes use of the fact that the period of a pendulum is consistent and can...
2. (1) A pendulum clock makes use of the fact that the period of a pendulum is consistent and can be predicted relatively easy. What should the length of a pendulum be if the desired frequency of oscillation is. 3. (1) Near the shore, Tsunamis travel at a speed of 30 mph and the distance between crests is about 6.5 miles. What is the frequency of such a wave? Give your answer in units of Hz. When one crest hits...
1. All students: (a) By combining kinetic theory with classical mechanics, Drude was able to derive a sensible equation for the electrical conductivity of metals. In the case of the thermal conductivity however, Drude's theory fails. Explain why (in bullet-point form). (b) The Fermi energy of copper is ~8 eV. What fraction of electrons are above the Fermi-level at room temperature? (c) Write down a general expression for the electron density in terms of the density of states and the...
#5. A) Estimate the resistivity of 2"Si (density of 1.04 x 1029 electrons/m3). The Fermi energy for silicon is about 5 eV. Assume A is roughly 100 times the atomic spacing, and the atomic spacing is 2.68 x 10-10 m. B) It turns out that the actual resistivity of silicon is much larger than what is predicted in Part A. Why might this be? C) What is the probability that a conduction electron in Si at 50, 000 K is...
2. In the derivation of the energy levels in the hydrogen atom one commonly assumes that the nucleus is a point charge. However, in reality the size of the nucleus is of the order of Im = 10-15m. Since this is very much smaller than the typical distance of the electron from the nucleus, which is of the order of a0-0.5A = 0.5 × 10-10m, the finite size of the nucleus can be taken into account perturbatively. (a) Assume that...
2. A manufacturer of coil springs is interested in implementing a quality control system to monitor his production process. As part of this quality system, it is decided to record the number of nonconforming coil springs in each production batch of size 50. During 40 days of production, 40 batches. Here are numerical summaries of the data. 8 mean 9.325 4.485804 Let X be a random variable representing the number of nonconforming coil springs in a production batch of size...
You are given the following information for a one-year project: Planned Value (PV) - $23,000, Earned Value (EV) - $20,000, Actual Cost (AC) = $20,000, and Budget at Completion (BAC) = $120,000. Answer each of the questions below to complete your assignment. Use the same numbers as the assignment when you give your answer, I only grade answers that correspond the assignment questions. 1. For this one-year project calculate: a. cost variance, b. schedule variance, C. cost performance index (CPI),...
Please me with these 5 questions
PHY3708 101/3 Question5 Using the wrmi-empirical mass formula (SEMF), estimate the binding energy per ucleon for 10B AL MCo and 2 Question 1 A sealed box was found which stated to have contained an alloy composed of two metals A and B. These metals are radioactive, with half eual parts respectively and when the container was opened it was found to contain c B. Deduce the age of the alloy. lives of 12 years...
2. (1) A pendulum clock makes use of the fact that the period of a pendulum is consistent and can be predicted relatively easy. What should the length of a pendulum be if the desired frequency of oscillation is. 3. (1) Near the shore, Tsunamis travel at a speed of 30 mph and the distance between crests is about 6.5 miles. What is the frequency of such a wave? Give your answer in units of Hz. When one crest hits...
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