(5:54:34 PM) PbG 5000: 4b is T = 2m(pi) / (qB)
(5:54:44 PM) PbG 5000: c is 1/that
(5:55:01 PM) Doug: what's the m?
(5:55:06 PM) Doug: oh electron
(5:55:48 PM) PbG 5000: i forgot 4a
(5:55:50 PM) PbG 5000: sry
(5:56:07 PM) PbG 5000: 5a2 is theta
(5:56:12 PM) PbG 5000: 5b2 is theta
(5:56:32 PM) PbG 5000: 6 is v = E/B
(5:56:36 PM) PbG 5000: 6b is
(5:56:43 PM) PbG 5000: use conservation of energy
(5:56:52 PM) PbG 5000: 6c is conservation of energy
(5:58:21 PM) PbG 5000: 7 i forget how
(5:58:32 PM) PbG 5000: but you can prob figure it from march 26 magnetic force
(5:58:35 PM) PbG 5000: which is posted
(5:58:38 PM) PbG 5000: just know 
(5:58:39 PM) Doug: ok
(5:58:44 PM) PbG 5000: there is rednum G
(5:58:50 PM) PbG 5000: thats gausses
(5:59:03 PM) PbG 5000: multiply rednum by 1/10000 to convert to tesla
(5:59:07 PM) PbG 5000: to use in the calculation
(5:59:07 PM) Doug: k
(5:59:31 PM) PbG 5000: 8 is t = N I A B 
(5:59:34 PM) PbG 5000: n is coils
(5:59:37 PM) PbG 5000: i is current
(5:59:41 PM) PbG 5000: a is cross sec area
(5:59:44 PM) PbG 5000: and b is field
(6:00:12 PM) PbG 5000: 9 is t / (Bsintheta)
(6:00:19 PM) PbG 5000: ignore l
(6:01:17 PM) PbG 5000: 10 is area of hte semi-circle * current
(6:01:38 PM) PbG 5000: (area = (outer circle area - smaller circle area)/2