Problem 5 (15 points)- You may leave your answers in terms of pi- but.docx

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Problem 5 (15 points): You may leave your answers in terms of pi, but you must express your answers in SI units. Recall that 4Tx 10 T m/A and c3.0x 10* m/s. A particular plane polarized electromagnetic wave, with B a frequency of 100 MHz, is traveling through a vacuum\' in the +x direction, as shown. At t = 0, the electric field due to this wave at x-0 has a magnitude of 300 V/m. a) What is the amplitude of the magnetic field, the angular frequency, and the wavelength? b) What are the vector functions (there are 2) for the wave described? c) What is the magnitude of the Poynting vector of this wave? d) If the wave is now incident on a polarizer with a transmission axis of 45o, what will the new intensity of the wave be? Solution (A) E_max = 300 V/m B_max = E_max / c = (300)/(3x10^8 m/s) B_max = 1 x 10^-6 T ....Ans (Magnetic field amplitude) w = 2 pi f = 2x pi x 100 x 10^6 w = 6.28 x 10^8 rad/s .....Ans lambda = v / f = (3 x 10^8) / (100 x 10^6) = 3 m .....Ans (B) E = (300 V/m) cos[ 2pi (x/3 - (100 x 10^6)t)] j B = (1 x 10^-6 T)cos[ pi (x/3 - (100 x 10^6)t)] k (C) S = E x B / 2u0 S = 119.4 W/m^2 (D) S = S0 (cos(theta))^2 S = (119.4)(cos45)^2 S = 59.7 W/m^2 .

Formation

(D) S = S0 (cos(theta))^2
S = (119.4)(cos45)^2
S = 59.7 W/m^2

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An IP datagram has arrived with the following information in the header(hex): 45000054 00030000 2006... A.) What is the header size? B.) Are there any options in the packet? C.)What is the size of the data? D.)Is the packet fragmented? E.)How many more routers can the packet travel to? F.)What is the protocol number of the payload being carried by the packet? Solution Answer: We have given IP datagram derived with the information in Hex : 45000054 00030000 2006 Now , here we divide this information as the following : A) Size of the header = 5 x 4 bytes = 20 Bytes B) No, As you can see above C) Length of the data = Total Length - HLEN = 84 - 20 = 64 Bytes D) Yes E) 32 Hops , so 32 routers . The last router will discard the datagram. .

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An Institutional Review Board (IRB) is concerned with how human participants in an evaluation are treated and how the collected data is analyzed and stored. Not every country has IRBs. Provide your opinion on how studies conducted in countries with no IRBs should be perceived. Suggest whether or not data collected during those studies would be reliable. Justify your response. (250+ words) Solution Biomedical research has made remarkable advances over the past century; as a result, ethics in clinical research is of more concern than ever before. There was little public dispute over the ethics of biomedical research until the 1960s, when scandals appeared to erupt worldwide and were opened to the public . There have been many responses to these scandals including recognition of the need for standards and guidelines in the ethics of clinical research. The growing necessity for ethics in clinical research has raised concerns related to controversial issues in the processing of the formal mechanism known as the IRB. There exist various perspectives in special topics with or without consensus. This paper first introduces historically evoked scandals and responses, and then identifies key ethical issues and insights, with topics limited by space constraint. Selected debates are intended as a guide to the ethical issues confronted by physicians and researchers. Research ethics is an essential part of good research practice to protect participants in clinical studies. It is our optimistic belief that these challenging issues will be resolved through a consensus in the future. It is also my hope that this review provides an idea of the ethical framework to those investigators and anesthesiologists who will need to meet the challenges of changing patterns of research circumstances. Potential failures of the system: Problems with collaborative research at Harvard School of Public Health: Problems with collaborative research at UCLA: .

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An economy is characterized by the following behavioral equations: C = 100 + .8 Y D I = 100 G = 200 T = .25 Y Solve for each of the following. Show your calculations. Equilibrium GDP ( Y ) Disposable income ( Y D ) Consumption spending ( C ) Private saving Public saving Suppose government spending increases by 10 (?G=10). By how much will GDP change? (?Y=?) Solution C = 100 + .8 Y D I = 100 G = 200 T = .25 Y At equilibrium: Y=C+I+G Y=100+0.8(Y-T)+100+200 Y=100+0.8(Y-.25Y)+300 Y=400+0.6Y 0.4Y=400 Y=1000 Yd=Y-T Yd=1000-0.25 x 1000 Yd=750 C=100+0.8Yd C=100+0.8x 750 C=700 In equilibrium I+G=S+T 100+200=S+250 S=50 Public savings: S=T-G S=250-200 S=50 Private saving= Y-T-C 1000-250-700 =50 If G increases by 10, then G=210. Y=410+0.4Y Y=1025 GDP will increase by 25. Hence a 10 increase in government spending will increase GDP by 25. Government expenditure Multiplier= 25/10=0.25 .

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An auditor examines a sample of cancelled checks to verify that the checks were signed by two authorized people, in accordance with company policy. This is an example of a: A. Test of a control B. Substantive test C. Cutoff test D. Statistical test Solution substantive test Substantive procedures (or substantive tests ) are those activities performed by the auditor to detect material misstatement or fraud at the assertion level. The different assertions of balances .

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All of the following are false regarding apportionment except? Solution The legal term apportionment (French apportionement; Med. Latin apportionamentum; derived from Latin portio , share) means distribution or allotment in proper shares. It is a term used in law in a variety of senses. Sometimes it is employed roughly and has no technical meaning; this indicates the distribution of a benefit ( e.g. salvage or damages under the Fatal Accidents Act 1846, .

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Although objectives, functional tactics, and action items are included in many implementation plans, why do some organizations have a difficult time following the plans they create? What problems have you faced when creating or following an implementation plan? Do not copy paste and I don\'t need references. Just answer in at least 150 words. Solution The various reasons where organization have difficulty in following the implementation plan they create are as follow: - 1) Ineffective Leadership: - The sucess of the plan depends upon the competency of the leader. The leader has the responsibility to take his team forward. In time of difficulty if the leader is not able to manage things then the crust of project is lost. 2) Stimulus to Change: - When a organization creates a plan but it does not run as thought becasue of various internal and external factors. If the organization do not change as per the requirement then the plan essense is lost. The problem that I faced while creating a implementation plan are as follows: - 1) Procurement of fund: - While I was creating a plan, the biggest problem for me was the procurement of fund. As fund carries a cost. If the cost of borrowed fund is higher that its a difficult situation for the fund. 2) Utilization of fund: - The other problem for me was how to utilize the fund as there is minimum cost that I would have to recover to satisfy my stakeholders. .

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prove or disprove that H = {n e(element) Z| n is divisible by both 8 and 10} is a subgroup of Z? Solution here H = {n e(element) Z| n is divisible by both 8 and 10} and we have Z = { -inf .....-2,-1,0,1,2,3........+ inf} n that is divisible by 8 and 10 is LCM of 8 , 10 = 40 so any number divisible by both 8 , 10 is of form = 40 m where m is some intezer let m =1 => 40 so it also belongs to subgroup Z .

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Project 3 is based on the materials from Freakonomics Radio Podcast: How Safe Is Your job?. Economists preach the gospel of creative destruction. whereby new industries - and jobs - replace the old ones. But in this era of technological wonder, has creative destruction become too destructive? 1. One of the creative destruction examples used by Stephen Dubner (the host of Freakonomics Radio Podcast) is piano business. Before the invention of phonograph. the sales of piano was $56 million in 1914. that was more than double the sales of phonographs. In 1919, five ears later, sales of record players hit $158 million. Radio soon eclipsed that. By World War 1. pianos were no longer an essential element of every living room. By 1933, two-thirds of American homes bad at least one radio. Name another creative destruction. 2. As mentioned by Stephen. it was terrible news for the people working in the piano industry. But the workers involved in the musical recording and broadcasting industries could benefit from this creative destruction So in your example in Qi, who do you think could benefit from the technological innovation. 3. There are two types of industries, labor intensive versus capital intensive. Give me some examples for each one, and which do you expect will be affected more by the creative destruction? Explain in one or two sentences. Solution Example of Capital intensive Libraries to E-Library, For Libraries it requires lots of space, Multiple copies of same book, take care of books but in case of E-Library books required in Soft forms, no requirement to have multiple copies, Ease to use. .

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