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25 Pages

### E45ProblemSet_7Soln

Course: ENGIN 45, Fall 2009
School: Berkeley
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Word Count: 5461

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Problem E45 Set #7 Solutions 10.32 Consider 1.5 kg of a 99.7 wt% Fe0.3 wt% C alloy that is cooled to a temperature just below the eutectoid. (a) How many kilograms of proeutectoid ferrite form? (b) How many kilograms of eutectoid ferrite form? (c) How many kilograms of cementite form? Solution (a) Equation 10.21 must be used in computing the amount of proeutectoid ferrite that forms. Thus, ' 0.76 - C 0 0.76 - 0.30...

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Berkeley - ENGIN - 45
E45 Problem Set #610.9 A magnesiumlead alloy of mass 7.5 kg consists of a solid phase that has a composition just slightly below the solubility limit at 300C (570F). (a) What mass of lead is in the alloy? (b) If the alloy is heated to 400C (750F), how mu
Berkeley - ENGIN - 45
E45 PROBLEM SOLUTIONS PS#912.1(a)Compute the electrical conductivity of a 7.0-mm (0.28-in.) diameter cylindrical siliconspecimen 57 mm (2.25 in.) long in which a current of 0.25 A passes in an axial direction. A voltage of 24 V is measured across two
Berkeley - ENGIN - 45
E45 Problem Set #8 PROBLEM SOLUTIONS4.2 (a) Compute the repeat unit molecular weight of polypropylene. (b) Compute the number-average molecular weight for a polypropylene for which the degree of polymerization is 15,000. Solution (a) The repeat unit mole
Berkeley - ENGIN - 7
function [new_tree] = add2tree(old_tree, new_element) % % adds new element to old tree and returns new tree % % base case is if old_tree isempty if isempty(old_tree) new_tree.val = new_element; new_tree.left = []; new_tree.right = []; else % initialize ne
Berkeley - ENGIN - 7
function [tree] = array2bintree(array) % % takes an array of scalars an returns the array in binary tree form % initialize binary treee tree = []; % loop through array for i = 1:length(array) % add this element of array to tree tree = add2tree(tree, array
Berkeley - ENGIN - 7
function [out] = bintreeSearch(tree, element) % % out is 1 if element value is contained in tree, 0 otherwise % % base case is if root is equal to value if isempty(tree) %obviously element is not in tree out = 0; elseif tree.val = element % then obviously
Berkeley - ENGIN - 7
function cost = calccost(newplan, ttl_min) if newplan=1 cost = ttl_min*.25 elseif newplan = 2 cost = ttl_min*.15+60 else ttl_hrs=ttl_min/60; else_hrs=ttl_hrs-3; else_min=else_hrs*60; f3_hrs=ttl_hrs-else_hrs; f3_min=f3_hrs*60; cost = f3_min*.3+else_min*.22
Berkeley - ENGIN - 7
function [dz] = centdet(fh,a,b,n) x=linspace(a,b,n); for i =1:length(x) y(i)=fh(x(i); e end for j = 1:length(x) if j=1 dz(j)=(y(2)-y(1)./(x(2)-x(1); elseif j=n dz(j) = (y(n)-y(n-1)./(x(n)-x(n-1); else dz(j)=(y(j+1)-y(j-1)./(x(j+1)-x(j-1) end end
Berkeley - ENGIN - 7
function [dz] = central_diff(fh,a,b,h) x=[a b]; dz = (fh(x+h)-fh(x-h)/(2*h); end
Berkeley - ENGIN - 7
function fee = comCost(in1,phonerecord) plan = phonerecord(in1).plan; if plan = 1 j=0; for i=1:length(phonerecord(in1).call); m=phonerecord(in1).call(i).duration; j=j+m; end fee=0.25*j; elseif plan=2 j=0; for i=2:length(phonerecord(in1).call); m=phonereco
Berkeley - ENGIN - 7
function fee = comCost(in1,phonerecord) plan = phonerecord(in1).plan; if plan = 1 j=0; for i=1:length(phonerecord(in1).call); m=phonerecord(in1).call(i).duration; j=j+m; end fee=0.25*j; elseif plan=2 j=0; for i=1:length(phonerecord(in1).call); m=phonereco
Berkeley - ENGIN - 7
disp('may take a few seconds.'); tmp=zeros(1001,1); tmp(1:3)=1/5; filter1=toeplitz(tmp); tmp=zeros(1001,1); tmp(1:45)=1/89; filter2=toeplitz(tmp); filter3=eye(1001)-filter2; disp('done');
Berkeley - ENGIN - 7
function [out] = creative4(self, enemy, tank, mine, req) switch req case 'info' out.team = 'Creative4'; out.student(1).first = 'Eddie'; out.student(1).last = 'Lo'; out.student(1).SID = '19483002'; out.student(1).lab = 18; case 'move' % set up parameters f
Berkeley - ENGIN - 7
function W=filter1(V) a=5; n=length(V); m=n-a; b=floor(a/2); W=0*V; for i=1:a W(b:b+m-1)=W(b:b+m-1)+1/a*V(i:m-1+i); end
Berkeley - ENGIN - 7
function [out] = gsiBot(self, enemy, tank, mine, req) % % test robot for students during E7 robot tournament % % the code contains the main switch case statement of the robot determining % whether or not it will give the student information or a move. the
Berkeley - ENGIN - 7
function A, cond(= illcond(n,c) A=rand(n-1,n); A(n,:)=0; A(n,:)=rand(1,n)*A; r=rand(1,n); A(n,:)=A(n,:)+c*r; cond(A) end
Berkeley - ENGIN - 7
function A = illcond(n,c) A=rand(n-1,n); A(n,:)=0; A(n,:)=rand(1,n)*A; r=rand(1,n); A(n,:)=A(n,:)+c*r; cond(A) end
Berkeley - ENGIN - 7
function [b] = indexmax2(A) b = [1]; for ii = 2:length(A) if A(ii) &gt;= A(ii-1) &amp; A(ii)&gt;= A(b) ; b = ii; end end b
Berkeley - ENGIN - 7
function [b] = indexmax1(A) b = [1]; for ii = 2:length(A); if A(ii) &gt;= A(ii-1) &amp; A(ii)&gt;= A(b); b = ii; end end
Berkeley - ENGIN - 7
function [ ] = indexmax2(A) [v,ind]=max(A); [v1,ind1]=max(max(A); (ind(ind1)
Berkeley - ENGIN - 7
function [ ] = indexmax3(A) C = [ ]; [v,ind]=max(A); [v1,ind1]=max(max(A); C(1)=(ind(ind1); for i = 1:length(A) if A(i)=max(A) C(2)=i; end end C(1),
Berkeley - ENGIN - 7
function [ ] = indexmax3(A) C = [ ]; [v,ind]=max(A); [v1,ind1]=max(max(A); maxval=max(A); for i =1:length(A) if A(i)=maxval C=[C,i]; end end C
Berkeley - ENGIN - 7
function [x0,y0,iout,jout] = intersections(x1,y1,x2,y2,robust) %INTERSECTIONS Intersections of curves. % Computes the (x,y) locations where two curves intersect. The curves % can be broken with NaNs or have vertical segments. % % Example: % [X0,Y0] = inte
Berkeley - ENGIN - 7
function yy = lagrange(x, y, xx) n = size(x,2); L = ones(n,size(xx,2); if (size(x,2)~=size(y,2) fprintf('\nERROR!\nX and Y must have the same number of elements\n'); yy = NaN; else for i = 1:n for j = 1:n if (i~=j) % calculation of Langrange basis polynom
Berkeley - ENGIN - 7
function [mat, A, B] = mat_mult(A,B) S1=size(A); S2=size(B); if S1(2)=S2(1) mat=A*B elseif S1(1)=S2(1) mat=A'*B else disp '-9999' end
Berkeley - ENGIN - 7
function [mat, A, B] = mat_mult(A,B) S1=size(A); S2=size(B); if S1(2)=S2(1) mat=A*B; elseif S1(1)=S2(1) mat=A'*B; else disp '-9999' end
Berkeley - ENGIN - 7
function [X,Y]=myButterfly(t) X=sin(t).*(exp(cos(t)-2*cos(4*t)-(sin(t/12).^5) Y=cos(t).*(exp(ncos(t)-2*cos(4*t)-(sin(t/12).^5)
Berkeley - ENGIN - 7
for j = 1:6 k=ttl_min(j,phonerecord) plan1=k*.25 plan2=k*.15+60 %to calculate plan3, we need: ttl_hrs=k/60; else_hrs=ttl_hrs-3; else_min=else_hrs*60; f3_hrs=ttl_hrs-else_hrs; f3_min=f3_hrs*60; plan3=f3_min*.3+else_min*.22 if plan1&lt;plan2&lt;plan3 | plan 1&lt;pla
Berkeley - ENGIN - 7
for j = 1:6 k=ttl_min(j,phonerecord); plan1=k*.25; plan2=k*.15+60; %to calculate plan3, we need: ttl_hrs=k/60; else_hrs=ttl_hrs-3; else_min=else_hrs*60; f3_hrs=ttl_hrs-else_hrs; f3_min=f3_hrs*60; plan3=f3_min*.3+else_min*.22; if plan1&lt;plan2&amp;plan3 &amp; plan1&lt;
Berkeley - ENGIN - 7
function [ ] = portfolio(p, V, r) w= (p*inv(V)*r)/(r'*inv(V)*r) w_0=1-sum(w) std_dev = p^2/(r'*inv(V)*r) end
Berkeley - ENGIN - 7
i = 1; x=ones(1,10) ctr = 0; while ctr &lt;=8 x(i) = 0; i = 1+i; ctr = ctr + 1 end
Berkeley - ENGIN - 7
x = 1:50; ind=1; y = [ ]; z = [ ]; while length(y)&lt;=10 ctr = 0; for k = 1:x(ind) if rem(x(ind),k)=0 ctr = ctr+1; end end if ctr = 2 y = [y, x(ind)]; else z = [z, x(ind)]; end ind = ind + 1; end y z
Berkeley - ENGIN - 7
function [] = stressTest (bot1, bot2, map, iters) % Runs global global global global global iters# of rounds and reports results TIME; WALLTIME; AVOIDTIME; DETERMINETIME; CHASETIME;records = zeros(1, iters); gameTime = []; % Run rounds for roundOn = 1:it
Berkeley - ENGIN - 7
function[fine]=ticket(MPH) MPH = round(MPH); if MPH &gt;= 55 &amp; MPH &lt;=59 fine = 0; elseif MPH &gt;= 60 &amp; MPH &lt;=69 fine = 20 + (MPH - 60)*1; elseif MPH &gt;= 70 &amp; MPH &lt;=79 fine = 30 + (MPH - 70)*2; elseif MPH &gt;= 80 &amp; MPH &lt;=89 fine = 50 + (MPH - 80)*3; elseif MPH &gt;=
Berkeley - ENGIN - 7
function[fine]=tickets(v) v = round(v); if v &gt;= 55 &amp; v &lt;=59 fine = 0; elseif v &gt;= 60 &amp; v &lt;=69 fine = 20 + (v-60)*1; elseif v &gt;= 70 &amp; v &lt;=79 fine = 30 + (v-70)*2; elseif v &gt;= 80 &amp; v &lt;=89 fine = 50 + (v-80)*3; elseif v &gt;= 90 &amp; v &lt;=99 fine = 80 + (v-90)*4; e
Berkeley - ENGIN - 7
function ttl_min = ttl_min(j,phonerecord) ttl_min=0; for i=1:length(phonerecord(j).call); m=phonerecord(j).call(i).duration; ttl_min=ttl_min+m; end
ASU - BB - 4
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ITT Tech Flint - ACCOUNTING - 2101
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ITT Tech Flint - ACCOUNTING - 2101
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ITT Tech Flint - ACCOUNTING - 2101
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ITT Tech Flint - ACCOUNTING - 2101
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ITT Tech Flint - ACCOUNTING - 2101
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