For a non homogeneous system of 2012 equations in 1999 unknowns- answ.docx

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For a non homogeneous system of 2012 equations in 1999 unknowns, answer the following three questions: Can the system be inconsistent? Can the system have infinitely many solutions? can the system have a unique solution ? Solution inconsistencies occur if the left-hand sides of the equations in a system are linearly dependent, and the constant terms do not satisfy the dependence relation. non homogeneous system of linear equations has a unique non-trivial solution if and only if its determinant is non-zero. If this determinant is zero, then the system has either no nontrivial solutions or an infinite number of solutions. .

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FInd the zeros for the following polynomial function and give the multiplicity for each zero. For each zero, state whether the graph crosses the x-axis or touches the x-axis and turns around. 8(x-5)(x+7) 3 What is the value of the zero with the smaller multiplicity? What is the multiplicity of this zero? What is the value of the other zero? What is the multiplicity of this zero? Solution 8(x-5)(x+7) 3 zeros ==> x=5 and x=-7 x=5 is having smaller multiplicity multiplicity of x=5 is 1 other zero is x=-7 multiplicity of x=-7 is 3 multiplicity of both the zeros is odd so at these zeroes graph crosses X axis .

FInd the zeros for the following polynomial function and give the mult.docx

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Find the Thevenin impedance at terminals a-b of the circuit on the right. Find the Thevenin impedance at terminals a-b of the circuit on the right. Solution Step 1 Make all sources to be zero so voltage source becomes short circuit and R is parallel to C and the combination of R and C is in series with L R parallel to C = R/(RCs+1) Now this is in series with L Z th = R/(RCs+1) +Ls Z th = (R+RLCs 2 +Ls)/(RCs+1) Putting the values of RLC Z th = [1+(1*1*1(jw) 2 +1*jw]/(1*1*jw+1 Here w=1 and j 2 =-1 Z th = [1-1+j]/(j+1) Z th = j/(j+1) or (j+1)/2 .

Find the Thevenin impedance at terminals a-b of the circuit on the rig.docx

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Find the range and interquartile range and median of the following dat.docx

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Shen yOu are told to plot log olD versus concentration, what variable blogl/ d. frequency CONcentration rmh wa of nroner graphing methods and Solution Answer a) concentration Explanation Transmittance(T) = I/I 0 I 0 = Incident intensity of light I = transmitted intensity of light Absorbance (A) = log(1/T) = log(I 0 /I) log(I 0 /I) = abc where, a = molar extiction coefficient b = bath length of light c = Concentration .

Shen yOu are told to plot log olD versus concentration- what variable.docx

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Should OSs be proprietary so that the manufacturers will be able to make enough profit to continue their development or should the internals and specifications of OSs be open for all users to know? Solution should OSS be proprietary? No, OSS should not be proprietary to help manufacuturers will be able to make profit. OSS makes money for manufacturers by helping its users install,use and troubleshooting it. Open source softwares are built collarboratively by programmers all around the world. These softwares are developed rapidly and maintained easily. Open sources are continuously modified to build better software. The internals and specifications of open source software must be open for all users to know because it helps the programmers or students to develop new software and also to upgrade the software to better one. .

Should OSs be proprietary so that the manufacturers will be able to ma.docx

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Social Media in Healthcare What are the strengths of using social media in health-care? Solution Why this matters: Health care professionals have an obligation to create educational content to be shared across social media that will help accurately inform consumers about health related issues and out shine misleading information. The opinions of others on social media are often trusted but arenâ€™t always accurate sources of insights, especially when it comes to a subject as sensitive as health. Why this matters: 18 to 24 year olds are early adopters of social media and new forms of communication which makes it important for health care professionals to join in on these conversations where and when they are happening. Donâ€™t move too slow or you risk losing the attention of this generation overtime. .

Social Media in Healthcare What are the strengths of using social medi.docx

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Sirius is a binary star- consisting of Sirius A and Sirius B- Sirius B.docx

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Simplify- log 4 1Solution log 4 1 - log 1 - log 4 - 0.docx

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Several years ago a ring of foreign-based hackers broke into Town Bankâ€™s system and stole $10 million from its customersâ€™ accounts. Discuss how systems can become vulnerable to computer crimes and then evaluate controls that strengthen those weaknesses. Required: a) Provide at least three weaknesses of AIS that hackers can exploit for gain and then b) Suggest at least one control for each weakness Solution Systems become vulnerable to computer crimes due to lack of security and access of the computers by multiple users, Absence of segregation of duties. Controls are:- Detective Controls:- i.e. passwords to access the computer, Antiviruses, Firewall , Employ Qualified Personnels. Some other controls are keeping guard at the entrance places and limited access of the computers only by the authorized personnels. .

Several years ago a ring of foreign-based hackers broke into Town Bank.docx

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Set up the chemical equation and balance for each (please write out ): 1) tin (4) phosphate + sulfuric acid = ? 2) lead (4) sulfide + hydrocyamic acid = ? 3) ammonium phosphite + dichromic acid = ? 4) mercury (1) hypoiodite + permanganic acid = ? 5) copper (1) carbonate + hydrosulfuric acid = ? Solution Chemical equations, 1) Sn3(PO4)4(s) + 6H2SO4(aq) --> 3Sn(SO4)2(aq) + 4H3PO4(aq) 2) PbS2(s) + 4HCN --> Pb(CN)4(aq) + 2H2S(aq) 3) 2(NH4)3PO3(aq) + 3H2Cr2O7(aq) --> 3(NH4)2Cr2O7(aq) + 2H3PO3(aq) 4) Hg(IO)2(s) + 2HMnO4(aq) --> Hg(MnO4)2(aq) + 2HIO(aq) 5) Cu2CO3(s) + H2S(aq) --> Cu2S(s) + H2O(l) + CO2(g) .

Set up the chemical equation and balance for each (please write out )-.docx

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Soil Classification systems provide a common language to express concisely Sjeve analysis is carried out for soil panicle sizes hydrometer analysis for particle-size distribution curse is based on Solution 8 - b It is ratio of volume of voids to total volume 9 - a It is ratio volume of voids to volume of solids 10 - d It is ratio of weight of water to dry solid which can be greater than unity or 100% 11 - a 12 - d Roof slab is not a soil component 13 - d It gives general classification based on component, grain size and plasticity 14 - a Larger soil sizes are not considered 15 - a It is indeed based on Stokes law .

Soil Classification systems provide a common language to express conci.docx

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Solution Approximate Acid, Base, or Approximate pH (2, 5, 7, 9, orNeutral? 13) Hydrogen lon Concentration Proton acceptor, donor, or both? HCI NaOH Solution 1) for HCl HCl is strong acid Its approximate pH will be 2 this is acid use: pH = -log [H+] 2 = -log [H+] [H+] = 1*10^-2 M This is proton donor Answer: 2 acid 1*10^-2 M proton donor 2) for NaOH NaOH is strong base pH will be close to 13 use: pH = -log [H+] 13 = -log [H+] [H+] = 1*10^-13 M This is proton acceptor Answer: 13 base 1*10^-13 M proton acceptor .

Solution Approximate Acid- Base- or Approximate pH (2- 5- 7- 9- orNeut.docx

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So I attempted drawing the new signal below. It is reflected, shifted left pi/3 ... but I don\'t know how the exponential signal (alpha^n) is supposed to affect the signal back to the frequency domain!!! Please be clear in solution. =) Sketch the DTFT of the sequence y(n) = x(- n) e-jn x /3 + alpha n for all n (a is a constant) Thise is the sketch without the constant alpha n : Solution due to the 2?-periodicity of the DTFT, the integral in figure given can be computed over any 2?-wide interval on the real line (i.e. between 0 and 2?, for instance). The relation between a sequence x[n] and its DTFT X(exp(j?)) will be indicated in the general case by x [n] == X (e^j? ) Clearly, for the DTFT to exist, the sum must converge. .

So I attempted drawing the new signal below- It is reflected- shifted.docx

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Simplify- log 4 1Solution log 4 1 - log 1 - log 4 - 0 (1).docx

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Silver is immediately above gold on the periodic table and the two metals have very close to the same lattice parameters. Why would you (naively) expect them to have very similar plasmon resonances? (What factor controls the frequency of the plasmon resonance?) The plasmon resonances for silver and gold are actually at about 400 and 520 nm respectively. Why are they so different? Solution We expect the similar property from the silver and gold metal because they belong to 4d and 5d orbital and due to the lanthanoid contraction the both elements are similar in size. Due to having similar size they should show closely or similar phsical property. But they show different plasmon resonance at different wavelength the main reason behind it can be their conductivity, as surface plasmon resonance is due to the resonance or oscillation of conduction electron the silver metal have high conductivuty then gold it can be a reason of SPR at different wavelength. .

Silver is immediately above gold on the periodic table and the two met.docx

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Shown below is an oxidation half-reaction in acidic solution. Which of the following correctly balances the reaction? Zn --> Zn(OH) 2 a. Zn+2e ? +2H 2 O?Zn(OH) 2 +2H + b. Zn+2H 2 O?Zn(OH) 2 +2H + c. Zn+2H 2 O?Zn(OH) 2 +2H + +2e ? d. Zn+2H 2 O?Zn(OH) 2 +2H + +e ? Solution Option C is correct Balance as follows Zn------> Zn(OH)2+ 2 e- To balance oxygen atom add water at deficient side Zn + 2 H2O - - - - - - - > Zn(OH)2+ 2 e- To balance hydrogen add H+ Zn+ 2 H2O - - - - - - > Zn(OH)2 + 2 H+ +2e- .

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