Recent content by leospyder

Please excuse my total ignorance but can someon explain to me how the following part of a certain proof makes sense We want to show that[SIZE="4"] F[SIZE="1"]k+1 ≤ (7/4)^(k+1). Consider [SIZE="4"]f[SIZE="1"]k+1 = [SIZE="4"]f[SIZE="1"]k + [SIZE="4"]f[SIZE="1"]k−1 (We can do this as k +1 is at...

Ive figured out the first parts (a) and (b) but I am stumped on (c). :eek:

Can someone help me with the following questions (I have no idea where to begin in either case). There are no questions that follow these same types of concepts in the book problems. 1) A 6000 Hz tone must have what sound level to seem as loud as a 100 Hz tone that has a 50 dB sound...

Oh, I see it better now. THanks a lot, just wanted to say that before I go to bed. If i need further clarification Ill post the fool proof. THakns a lot guys

Can someone explain to me this part of the proof of the jacobian? I don't know what they're talking about...I can follow the rest (the cross product bla bla bla bla bla) but I don't know how they're getting these two vectors...I figured it has something to do with partial differentials but I...

Im confused now, because in an earlier post you said I could just subtract the four moments of inertia from the moment of inertia of the large circle. So is that correct or is the parallel axis theorem the correct formula to use? Also why is I = ½ M R^2 - 4 (½ m r^2 + m a^2) ? I...

ok i found the MOI but what happens with the 4 holes? LIghtgrav, you said I should subtract the holes so would the total moment of inertia be: I= 1/2m(r)^2 - 4[1/2m(r)^2] but is it easy as subtracting the 4 holes, because...

the problem is i literally don't know where to begin. I understand subtracting the holes to get the moment. But i don't even know how to set-up the integral. I only know (integral)r(squared)dm, I am lost as to where to go from there.

I need to derive the formula for this "film projection wheel" (it just has four holes in the center). I've looked all over google AND Hyperphysics but I haven't found a site that shows how to derive the formulas. Please can someone help me (my physics teacher is a dick: he's been missing for...