Recent content by jonahsaltzman

  1. J

    Why does 2-propanethiol have a lower boiling point than 1-propanethiol

    Homework Statement Consider 2-propanethiol, shown below. Would you expect its boiling point to be higher or lower than that of 1-propanethiol? Why?Homework Equations 1-propanethiol: 2-propanethiol: The Attempt at a Solution I looked it up, and 2-propanethiol does have a lower boiling point...
  2. J

    Why does tangential velocity equal translational velocity when rolling?

    Homework Statement Not actually a problem, I'm just curious why: when calculating total kinetic energy during rolling, you have the translational kinetic energy=0.5mv^2, and the rotational KE=0.5Iω^2. But then ω=v/r, so rotational KE=0.5I(v/r)^2. And for some reason, the v in both equations...
  3. J

    3D Printing and CAD for Robotics

    Hello! First post here at the forum. I am a member of the underwater robotics team at my school, and I have been put in charge of building the arm. I won't get too specific about the design of it, but it will include gears, motors, and stuff in between. Luckily enough, my school owns a 3D...
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