Recent content by emjay66

NascentOxygen: Your "Check" I actually made as a tacit assumption (ie no wind = "apparent wind" is exactly opposite the boats velocity) However, I think I am still confused by your comment, that is, given the magnitude of the boats velocity (v_b) I'm not sure how v_w -v_b would help me. Also...

Delta2: Yes, As far as I see, the frame of reference (from due east) forms a 210 degree angle. Also, I assume that the angle of the pennant is in the frame of reference of the boat. Sorry, the question doesn't provide more data (I copied the question (minus the diagrams) straight from the book)

I am having trouble solving a basic problem in the use of vectors. The problem comes from Alonso & Finn "Fundamental University Physics" Volume 1, Chapter 3 Problem 12 and states "The pennant on the masthead of a sailboat streams back at an angle of 45 degrees (South of West), but the flag on...

Ok the answer for each (in the back of the book) are as follows (in spherical, cubic) order (all numbers are cm): Hydrogen: 3.29*10^-7, 1.14*10^-8 Water: 3.85*10^-8, 6.21*10^-8 Iron: 2.82*10^-8, 4.46*10^-8 Some rethinking about the problem gave me the following: mass of Hydrogen molecule =...

I only feel my approach is wrong or incomplete because my answers do not match those contained at the back of the text (also stated in the original email above). Unfortunately I have no other assertion to base it on. (ps I was a little rushed with my OP so I apologise if that wasn't entirely clear)

I am attempting to complete a basic question involving molecular separation from Alonso & Finn "Fundamental University Physics" Second Edition, Chapter 2, Question 9. The Problem states "Using the data in table 2-1 and A-1, estimate the average separation in molecules of hydrogen at STP (gas)...

Thanks. The correct interpretation of the FTC was a useful hint, as well as f'(c) = 0 for a c in [0,a].

Help with this problem -- Proof with first and second derivatives Homework Statement I'm stuck on this problem and I'm not sure what I'm missing. The problem states: Assume that |f''(x)| \leq m for each x in the interval [0,a] , and assume that f takes on its largest value at an interior...

Help with integral from Apostol "Calculus" Homework Statement I seem to be stuck trying to prove the following integral from Apostol "Calculus" Volume 1 Section 5.11, Question 33. \int\frac{\cos^mx}{\sin^nx}dx =...

Homework Statement I've been working on a problem from Apostol "Calculus" Volume 1 (not homework but self study). The problem is Section 5.8, Number 25 (Page 217) and states: If [tex]$\m$[\tex] is a positive integer, show that: \int_0^{\frac{\pi}{2}} cos^m x sin^m x dx =...