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Brenda Echeverri
What minimum concentration of Cl− is required to begin to precipitate PbCl2? Solution is 0.085 M in Pb2+?
A solution is 0.085 M in Pb2+.
What minimum concentration of Cl− is required to begin to precipitate PbCl2?
PbCl2, Ksp=1.17×10^−5
1 AnswerChemistry5 years ago
One application of an RL circuit is the generation of time-varying high voltage from a low-voltage source as shown in the figure attached.?
(Assume e m f = 27.0 V, R1 = 1,400 Ω, R2 = 14.0 Ω, and L = 9.00 H.)
(a) What is the current in the circuit a long time after the switch has been in position a?
(b) Now the switch is thrown quickly from a to b. Compute the initial voltage across each resistor and across the inductor.
- 14.0 Ω resistor
- 1,400 Ω resistor
- inductor
1 AnswerEngineering6 years agoTranslate this text... I'm not sure what language it is ?
Ik aanbid U
Toon mij Uw glorie
Toon mij wie U bent
'K Wil U
Kennen Heer
U bent El Elohim
Daarom Kom ik tot U
2 AnswersLanguages7 years ago
Calculate the mesh currents in the circuit shown?
Help me with any steps you can...
1 AnswerEngineering8 years ago
Find the value of all labeled unknowns in the circuits?
Find the value of all labeled unknowns in the circuits (A and B shown in the picture) using the correct divider. Answers should be in the time domain...
I want to understand how to do this, any help is much appreciated!
1 AnswerEngineering8 years agoUsing the Simpson's rule with n=6, approximate the integral...?
int. [sqrt(ln(x))] dx from 1 to 4
I understand how to apply this information to the formula...
=1/6 [f(1) + 4f(3/2) + 2f(2) ...
what I don't get is why are we using 3/2 as the second f(x) if our increments are defined by the following as 1/2...
deltax = (b-a)/n = (4-1)/6 = 1/2
of course this doesn't work for ln(x) because I get a negative value which I cannot take the sqrt of (at least with real numbers).
Mathematics8 years ago
Inductors: What is the steady state voltage VL, VR, and io?
Please, any help is much appreciated!
Inductors.
1. What is the steady state voltage VL in the picture attached?
vL =
2. Calculate the steady state voltage VR.
vR =
3. Calculate the steady state current iO.
iO =
2 AnswersEngineering8 years agoWrite the following complex numbers in both polar and rectangular coordinates...?
Please help me out with showing work... help much appreciated!
1) j3 / 1+j5
2) 9+4j / 2-j8
3) 10 + j(j3/1+j5)
1 AnswerHigher Education (University +)8 years ago
Converting input to output using a multiplexer?
The circuit will take a 6-bit two's compliment number with signed value between -32 and +31 and convert it to a 4-bit two's complement number with a signed value between -8 and +7. Negative input values less than -8 will be saturated at -8. Positive values > +7 will be saturated at +7.
I'm looking for the output in binary and/or decimal.
Inputs:
31
23
15
8
7
6
-2
-4
-8
1 AnswerProgramming & Design8 years agoEvaluate the integral of (cos(x)+sin(x)) / (sin(2x)) , dx? (help starting)?
Also,
Integrate: (1-tan^2(x)) / sec^2(x) , dx
How can I start these integrals out? Using integration by parts... or a different method.
I just need help starting it, and then I think I can finish them.
Thanks in advance!
3 AnswersMathematics8 years agoDefine the integral by interpreting it in terms of areas?
Integral from 0 to 9 ((1/3)x - 2) dx
any help is highly appreciated!
1 AnswerHomework Help8 years agoFind f(x) from the double derivative...?
f''(x) = x^3 + sinhx
f(0) = 1
f(2) = 2.6
1 AnswerHomework Help8 years agoUsing l'Hospital's Rule, or alternate (more elementary) method...?
a. lim[x->0] of (x^2)/(1-cosx)
b. lim[x->infinity] of ln(sqrtx)/x^2
c. lim[x->0] of (x-sinx)/(x-tanx)
d. lim[x->infinity] of (sqrtx)(e^(-x/2))
1 AnswerMathematics8 years agoFind intervals of increase/decrease, local max/min, and concavity?
Function:
f(x) = 200 + 8x^3 +x^4
a) Find the intervals of increase or decrease.
b) Find the local max and min values.
c) Find the intervals of concavity and the inflection points.
Please help me out! I want to understand how to use the different tests (i.e. First Deriv. Test, Concavity Test, 2nd Deriv. Test)
Thank you in advance...
1 AnswerMathematics8 years agoFind the differential of the function y=ln[sqrt(1+t^2)]?
Please, if I can get the steps also to do it (I want to understand the process).
Thank you!
2 AnswersMathematics8 years agoFind the integral of e^(u+2) evaluated at 1 and -2?
1
∫ e^(u+2) du
-2
∫[-2,1,e^(u+2),]
2 AnswersMathematics8 years agoShow that the minimum period for a satellite in orbit around a spherical...?
Show that the minimum period for a satellite in orbit around a spherical planet of uniform destiny 'p' is...
T(min) = (3pi/G'p')^1/2
...independent of the planet's radius.
So lost, I'd appreciate any help!
Thanks.
1 AnswerPhysics8 years agoCan anyone get te chords by listening to this song?
I'm trying to play this song but I can't figure out even the key.. It sounds to me like it starts on a Fm...
Anyone good with playing by ear; it's not a complicated song.. I think 4-6 chords (there's a C# in there I believe).
Please!! Help! I'll appreciate it...
Here's the link to the song on YouTube:
2 AnswersOther - Music8 years agoPhysics... Rotational motion problem?
Why would the following situation be impossible?
A uniform beam of mass m=3.00kg and length l=1.00m supports blocks with masses m1=5.00kg and m2=15.0kg at two positions.
The beam rests on two triangular blocks, with point P a distance d=0.300m to the right of the center of gravity of the beam. The position of the object of mass m2 is adjusted along the length of the beam until the normal force on the beam at O is zero...
http://books.google.com/books?id=egmU-OumDAgC&pg=P...
Thanks in advance!! :)
4 AnswersPhysics8 years ago
