Recent content by Mtnbiker

  1. M

    Resistance of infinite nested triangles

    Hi... thanks for the welcome, I'm glad to be here. I agree with you regarding keeping the area incorporated in the answer. However, I'm still struggling with what exactly would the length be (first triangle is 3a, second triangle is 3a/2, then 3a/4 and so on...). There is a point of...
  2. M

    Why Does BH2 Add to the Less Substituted Carbon in Hydroboration?

    Hydroboration-oxidation is believed to be mainly a steric effect, although there is regioselectivity (hydrogen is the negative half of the B-H bond and boron is the positive half). The steric effect stems from the fact that boron (and its attached substituents) is MUCH larger than a hydrogen...
  3. M

    Identifying Cyclic Alkanes: C6H12 - C9H18 - C10H20

    A is just ethylcyclobutane. There is no need to number the substituent, since a cycloalkane with 1 substituent will always have it at the #1 carbon. You had the formula right. B is correct. C is 2-ethyl-1,3-dimethylcyclohexane (you number so as to give your substituents the lowest number...
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    Resistance of infinite nested triangles

    Homework Statement Here is an interesting problem... there is a wire bent in the shape of an equilateral triangle, side length = a and resistivity = rho. In the center of this triangle is another equilateral triangle (inverted, side = a/2, resistivity = rho) and so on into infinity. What is...
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