Hi there,
How to write the reaction between water and chromium metal under standard (i) acid and (ii) base condition?
Cr + 3H2O ----> Cr(OH)3 + 3e- + 3 H+ (acid condition)
basic solution ???
Please help
w= -P ΔV
in case of constant Pressure, ΔH= (q -PΔV) +PΔV >> ΔH= q
So w in ΔU will be the same when constant pressure with Δ(PV) in ΔH ?
if the pressure is not constant What is P in ΔU ? is it P external? and what is P in ΔH ? P in ΔH is Pressure of system? in case of ideal gas, Δ(PV) = nRT so...
1. Homework Statement
2. Homework Equations
3. The Attempt at a Solution
The answer is y(t) = t^{4}+\frac{t^{6}}{30}
Don't know what to do next any advices please
1. Homework Statement
Hi guys, How can sin(∏)cos(ω∏)-cos(∏)sin(ω∏) = sin(ω∏)? please guide me trigonometry identity to apply with this?
2. Homework Equations
3. The Attempt at a Solution
Hi collinsmark & rude man ,
I just found out that my both of my sketches was wrong. It should be the as collinsmark sketch.
Thank you you guys for the comments.
Hi rudeman, thanks for the reply
yes, I know what you mean but I have checked my book there is no equal signs in that question. and not only this question that has no equal sign most of the questions and examples in my exercise book and lecture note.
1. Homework Statement
How can I get to that answer?
2. Homework Equations
3. The Attempt at a Solution
I'm stuck dont know how to get to the answer that I got from wolframalpha. there is no solution there unfortunately.
I know how to get to that denominator w^2-1 but I dont know how...
I still cannot see it where it is defined f(x) = 1, 0 =< x < 1 and f(x) = 2, 1 < x <= 2. What I see on the question is f(x) = 1, 0 < x < 1 and f(x) = 2, 1 < x < 2.
Maybe I misunderstand something :frown:
1. Homework Statement
what values does the Fourier series for f(t) converge to if t = 0 and t = 2?
2. Homework Equations
3. The Attempt at a Solution
My answers the red rectangles for the even function t=0 >> 1 and t=2 -->1.5
and odd function t=0 >> 0 and t=2 -->1.5
because at...
1. Homework Statement
How did \frac{1}{2}x come from at k=1?
2. Homework Equations
3. The Attempt at a Solution
because k=1 will make the first term at denominator 2(k-1) = \frac{0}{0}
I think integral give a different result so they are different ? not 100% sure
because in my lecture note all the example are < ,> there is no single example has <=, >=. so when I tried to do some exercise there are <=, >= on the functions so it kinda confused me. please explain more
1. Homework Statement
these two functions will give the same Fourier series? because when I write the graph they look the same?
2. Homework Equations
3. The Attempt at a Solution
in the picture
thank you
1. Homework Statement
2. Homework Equations
3...
Thank you for the comments
\sum^{\infty}_{n=1} \frac{(ln(n))^{3}}{n^{3}}
The series (Bn) that we choose must represent the original series (An) and we recognize converges or diverges from Bn. (We dont know from the original). the problem is...
How do I know that \frac{1}{n^3} is too small...
1. Homework Statement
Using the limit comparison test to determine convergence or divergence
(1) \sum^{\infty}_{n=1} \frac{(ln(n))^{3}}{n^{3}}
(2) \sum^{\infty}_{n=1} \frac{1}{\sqrt{n} ln(x)}
(3)\sum^{\infty}_{n=1} \frac{(ln(n))^{2}}{n^{\frac{3}{2}}}
2. Homework...