Homework Statement
Homework Equations
Huckel's Rule: 4n +2 pi electrons
The Attempt at a Solution
I'm having problems with the last molecule. I said that the first molecule was indeed aromatic because it has 6 pi electrons and obeys the 4n + 2 rule. The second one is not aromatic because...
Homework Statement
Evaluate ∫((secx)^2)/[((tanx)^2)+(3tanx)+2]
Homework Equations
Partial fraction decomposition
The Attempt at a Solution
So here's what I did:
But this is incorrect. It says the correct answer is -2lnabs(\frac{1}{2tanx+3}+\sqrt{4(tanx+3/2)^{2}-1}), which was...
Homework Statement
A solenoid has a radius of 1.85 cm and 1110 turns per meter. Over a certain time interval the current varies with time according to the expression I = 2.50t, where I is in amperes and t is in seconds. Calculate the electric field 5.47 cm from the axis of the solenoid...
Homework Statement
First make a substitution and then use integration by parts to evaluate the integral.
∫x^{7}cos(x^{4})dx
Homework Equations
Equation for Substitution: ∫f(g(x))g'(x)dx = ∫f(u)du
Equation for Integration by Parts: ∫udv = uv - ∫vdu
The Attempt at a Solution
So...
Homework Statement
Use integration by parts to evaluate the integral.
∫5x ln(4x)dx
Homework Equations
∫udv = uv - ∫vdu
The Attempt at a Solution
So here's my solution:
But the computer is telling me I'm wrong :( We haven't learned how to integrate lnx yet, so the...
Homework Statement
The Earth's radius is 6370 km . There is a downward-pointing electric field in the atmosphere above the Earth's surface, of average magnitude 140. N/C .
a) What is the flux of the electric field out of the Earth?
b) What is the charge on the Earth?
Homework...