A Gaussian sphere of radius 4-00 cm is centered on a ball that has a r.docx

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A Gaussian sphere of radius 4.00 cm is centered on a ball that has a radius of 1.00 cm and a uniform charge distribution. The total (net) electric flux through the surface of the Gaussian sphere is +5.60 x 10^4 Nm2 /C. What is the electric potential 12.0 cm from the center of the ball? Obtain the electric potential at distance 3.00 cm from the center of the ball with V ref = 0 at r = ?. Obtain the electric potential at distance 1.00 cm from the center of the ball with V ref = 0 at r = ?. Obtain the electric potential at distance 0.500 cm from the center of the ball with V ref = 0 at r = ?. Answer questions a), b), c) and e) above again by setting the reference point for the electric potential at the center of the ball, that is V ref = 0 at r = 0 76 A Gaussian sphere of radius 4.00 cm is centered on a ball that has a radius of 1.00 cm and a uniform charge distribution. The total (net) electric flux through the surface of the Gaussian sphere is +5.60 X 104N m2/C What is the electric potential 12.0 cm from the center of the ball ?? Solution using gauss law solve charge, q= E o (fhi)=+49.8nC. now potential V=q/4(pi) E o =( 8.99*10 8 )(4.958*10 -7 )/0.120 =3.71*10 4 v. .

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Physics 226 Fall 2013 Problem Set #1 NOTE: Show ALL work and ALL answers on a piece of separate loose leaf paper, not on this sheet. Due on Thursday, August 29th 1) Skid and Mitch are pushing on a sofa in opposite directions with forces of 530 N and 370 N respectively. The mass of the sofa is 48 kg. The sofa is initially at rest before it accelerates. There is no friction acting on the sofa. (a) Calculate the acceleration of the sofa. (b) What velocity does the sofa have after it moves 2.5 m? (c) How long does it take to travel 2.5 m? 2) You have three force vectors acting on a mass at the origin. Use the component method we covered in lecture to find the magnitude and direction of the re- sultant force acting on the mass. 3) You have three force vectors acting on a mass at the origin. Use the component method we covered in lecture to find the magnitude and direction of the re- sultant force acting on the mass. 4) A bowling ball rolls off of a table that is 1.5 m tall. The ball lands 2.5 m from the base of the table. At what speed did the ball leave the table? 5) Skid throws his guitar up into the air with a velocity of 45 m/s. Calculate the maximum height that the guitar reaches from the point at which Skid let’s go of the guitar. Use energy methods. 6) A beam of mass 12 kg and length 2 m is attached to a hinge on the left. A box of 80 N is hung from the beam 50 cm from the left end. You hold the beam horizontally with your obviously powerful index finger. With what force do you push up on the beam? 7) The tennis ball of mass 57 g which you have hung in your garage that lets you know where to stop your car so you don’t crush your garbage cans is entertaining you by swinging in a vertical circle of radius 75 cm. At the bottom of its swing it has a speed of 4 m/s. What is the tension in the string at this point? Mitch Sofa Skid y F2 = 90 N F1 = 40 N 35 8) Derivatives: a) Given:    Lx2Lx4y 22  , find dx dy . b) Given:          Lx2 Lx2lny , find dx dy . 9) Integrals: a) Given:    o o 45 45 d r cosk , evaluate. b) Given:    R 0 2322 dr xr kx , evaluate. ANSWERS: 1) a) 3.33 m/s2 b) 4.08 m/s c) 1.23 s 2) 48.0 N, 61.0º N of W 3) 27.4 N, 16.1º S of E 4) 4.5s m/s 5) 103.3 m 6) 78.8 N 7) 1.78N 8) a) 24x2 + 8xL – 4L b) 22 x4L L4  9) a) r k2  b)           22 xR x1k2 45 x F3 = 60 N y F2 = 65 N F1 = 45 N 60 50 x 70 F3 = 60 N Guitar Skid Physics 226 Fall 2013 Problem Set #2 1) A plastic rod has a charge of –2.0 C. How many electrons must be removed so that the charge on the rod becomes +3.0C? – + + + 2) Three identical metal spheres, A, B, and C initially have net charges as shown. The “q” .

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A field F is called a prime field if it has no proper subfields. If E is a subfield of F and E is a prime field, then E is a prime subfield of F. Solution If F is a eld, we know that the intersection F0 of all subelds of F is again a eld|called the prime subeld of F. It is the smallest subeld of F. The prime subeld must contain 1 and all its multiples n 1. If we dene a ring homomorphism Z ! F by n 7! n 1, its image must be contained in F0. If the kernel of this homomorphism is f0g, then F0 contains a subring isomorphic to Z, and hence it contains a subeld isomorphic to the eld of fractions Q of Z. By minimality, F0 = Q. Otherwise, the kernel is of the form pZ for some positive integer p. Since Z=pZ will be isomorphic to a subring of F, it is a domain so p must be prime and Z=pZ is a eld. Again, by minimality, F0 = Z=pZ. In the rst case we say that F has characteristic 0, and in the second case we say it has characteristic p. An alternate notation for Z=pZ which is common in eld theory is Fp .

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A description about the tool used to perform the scan â€¢A list of identified target host(s) in your lab environment â€¢What running services are detected on each (include version numbers if possible) â€¢What the detected operating system of the servers is Solution The finger daemon runs on TCP port 79. The client will (in the case of remote hosts) open a connection to port 79. An RUIP (Remote User Information Program) is started on the remote end of the connection to process the request. The local host sends the RUIP one line query based upon the Finger query specification, and waits for the RUIP to respond. The RUIP receives and processes the query, returns an answer, then initiates the close of the connection. The local host receives the answer and the close signal, then proceeds closing its end of the connection. The Finger user information protocol is based on RFC 1288 ( The Finger User Information Protocol , December 1991). Typically the server side of the protocol is implemented by a program fingerd (for finger daemon ), while the client side is implemented by the name and finger programs which are supposed to return a friendly, human-oriented status report on either the system at the moment or a particular person in depth. There is no required format, and the protocol consists mostly of specifying a single command line. The program would supply information such as whether a user is currently logged-on, e-mail address, full name etc. As well as standard user information, finger displays the contents of the .project and .plan files in the user\'s home directory. Often this file (maintained by the user) contains either useful information about the user\'s current activities, similar to micro-blogging, or alternatively all manner of humor. .

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A CPA firm has audited the financial statements included in a Form S-1 filed with the SEC under the Securities Act of 1933. Shortly thereafter, the company went bankrupt and the initial investors filed a class action lawsuit against the CPA firm. (a) What should the plaintiff investors attempt to prove? (b) What must the CPA firm prove in order to be successful with respect to the firm Solution Hi, Please find the detailed answer as follows: Part A: The focus should be on proving the following: a) That they have sustained losses b) That the financial statements contain misleading information. Part B: CPA firm must prove the following points: a) That the plantiff\'s losses didn\'t result from misstated financial statements. b) Due diligence. It means that investors has reasonable grounds to believe that the financial statements were not misleading as on the effectived date. Further, they made investments based on such belief. c) Plantiff\'s were aware of the misstatement in the financial statement at the time of purchase of securities. Thanks. .

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A contemporary issue facing technology innovation today is the tension between personal privacy and public security. Discuss in-depth how this issue effects and drives the development of devices or software. Provide at least one example. (Write at least 2 - 3 paragraphs) Solution Answer: Personal privacy is the ability of an individual or group to seclude themselves, or information about themselves from the face of the public or anyone else since probably that information is inherently special or sensitive to them, (Oulasvirta, Suomalainen, Hamari, Lampinen, & Karvonen, 2014), while on the other hand, public security is a function of a governments that ensures the security of its citizens, organizations, and institutions against threats for their well-being and to the prosperity of their communities. Government and law enforcement officials have unprecedented powers to collect, correlate and act upon mountains of digital data on individuals all in the name of public security. They compromises privacy and demands access to protected information of people in the name of preserving national security. However according to Privacy activists view such deep data mining as an unjustified invasion of personal privacy, undermining civil liberties and eroding longstanding constitutional protections, (Rothbard, 2011). There are a lot of advantages by keeping an eye on everyone but when done so deep it takes away peopleâ€™s privacy. This tension has led to innovations in technologies on both hands, people are trying to find ways to protect their personal information from the public or anyone else while still on the other hand the government is trying to create new ways to gather private information. For example, in 2001 in United States, thermal imaging devices were invented to reveal previously unknown information without a warrant. .

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Conduct an External Environmental Scan for your selected company. Identify and Select key trends in the social and task environments which offer threats and opportunities to the organization. Organize the scan by placing the key trends into columns of threats, opportunities, or both. Solution STRENGTHS WEAKNESSES OPPORTUNITIES Opportunity-Strength (OS) Strategies Use strengths to take advantage of opportunities Opportunity-Weakness (OW) Strategies Overcome weaknesses by taking advantage of opportunities THREATS Threat-Strength (TS) Strategies Use strengths to avoid threats Threat-Weakness (TW) Strategies Minimize weaknesses and avoid threats .

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Computing an average mark for four tests Design the algorithm and then write a C++ program that prompts the user to enter the first name, family name, M for male or F for female and then the marks for four tests, which are all integer (whole) numbers. The program then computes and prints the average of these marks. Your output should have a header which has the 9 titles (firs name. last name, gender, 4 marks and the average) on one line followed by the actual data and the computed average on the next line, with the two lines separated by one blank line. Solution Answer #include <iostream> #include <iomanip> using namespace std; int main() { char first_name[20],family_name[20],gender; int i,marks[4],total=0; double average_marks; cout<<\"\ Enter First name : \"; cin>>first_name; cout<<\"\ Enter Family name : \"; cin>>family_name; cout<<\"\ Enter Genter M ot F : \"; cin>>gender; cout<<\"\ Enter Marks : \"; for(i=0;i<4;i++) { cin>>marks[i]; total+=marks[i]; } average_marks=double(total/4.0); cout<<\"\ \ First\"<<setw(8)<<\"Famiy\"<<setw(8)<<\"Gender\"<<setw(8)<<\"Marks1\"<<setw(8)<<\"Marks2\"<<setw(8)<<\"Marks3\"<<setw(8)<<\"Marks4\"<<setw(15)<<\"Average_Marks\"<<setw(5)<<\"\ \ \"; cout<<first_name<<setw(8)<<family_name<<setw(8)<<gender<<setw(8); for(i=0;i<4;i++) { cout<<marks[i]<<setw(8); } cout<<setprecision(4)<<average_marks; return 0; } .

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