# Recent content by dolpho

1. ### Organic Chem. Question

If we add br2 / hv to (s)-1,2-dibromobutane. Where would the radical bromine go? The book hints that the product is an optically inactive substance. So I'm guessing that the bromine would go towards the carbon that has the bromine atom on it making 1,2,2-tribromobutane? Would appreciate...
2. ### Parametric Equations (Calc.2)

Hmmmm right... So I'm a bit confused on how we take our starting equation and turn it into two. Would we just do y=2t^3 and x = (t/2)^1/3 ?
3. ### Parametric Equations (Calc.2)

Hmmmm right... So I'm a bit confused on how we take our starting equation and turn it into two. Would we just do y=2x^3 and x = (y/2)^1/3 ?
4. ### Parametric Equations (Calc.2)

Homework Statement Parametrize the curve by a pair of differentiable functions x = x(t), y = y(t) with [x '(t)]2 + [y '(t)]2≠0, then determine the tangent line at the origin. y=2x^3 The Attempt at a Solution Honestly I don't really understand what it's asking for. I assume it wants...
5. ### Electrostatic Force of a Triangle

Anyone have any ideas?
6. ### Electrostatic Force of a Triangle

So this is what I have so far... .65N=F12 + F32 .65N = (Kq2 / R^2)(q1cos60 + q1sin60 + q3cos60 + q3sin60) Am I on the right track?
7. ### Electrostatic Force of a Triangle

Hmmmm....Not quite following you, so in a way we should work backwards? F2= .65 N .65 = F 1 on 2 + F 3 on 2 Is that what you're saying?
8. ### Electrostatic Force of a Triangle

Homework Statement Suppose that the magnitude of the net electrostatic force exerted on the point charge q2 in the figure is 0.65 N . (Figure 1) http://imgur.com/4lZliPq Find the distance D. q1 = 2.1 micro C q2 = 6.3 micro C q3 = -.89 micro C Homework Equations F = k |q1|...
9. ### Drawing Isomers of cyclopentane?

Homework Statement Draw the products of the mono-chlorination reaction of methylcyclopentane. Indicate the minor and major products. Homework Equations The Attempt at a Solution I've tried looking up examples of how to do this problem but can't seem to find any. From what I...
10. ### Naming Organic Compounds

Homework Statement Give an acceptable IUPAC name for these compounds. http://i.imgur.com/tHUpwYK.png The Attempt at a Solution So the question is really on the 2nd problem in the picture but I need to reference the first one for my question. So my original guess on the 2nd problem was...
11. ### Resistance in a series / parallel?

Finally!! Got it right, thanks so much for your help!
12. ### Resistance in a series / parallel?

ARG.....It's not .8...what the f.....heck
13. ### Resistance in a series / parallel?

Ok I was just thinking that, so its actually. .72 = 1 / Req Req = 1.39? Then we add that to R6 in a series? so 1.39 + 7.6 = 8.99 Now we add R6 to R2 and R1 which are parallel. So... 1/2.2 + 1 + 1/8.99 = 1 / Req = 1.24 = 1 / Req -----> 1 / 1.24 = .8?
14. ### Resistance in a series / parallel?

nope :( I'm not sure what I'm doing wrong
15. ### Resistance in a series / parallel?

Ahhh I'm sorry I did a typo. I meant parallel