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  1. K

    Doughnut Calculus

    Doughnut Calculus!!! Hey guys, I need help with a somewhat big Calculus IV problem. We are reviewing double and triple integrals in polar coordinates. So here is my problem: Work out the mass, 2nd moment, and radius of gyration for a doughnut shaped yoyo about both x and y axes... I...
  2. K

    About neutrons, theyve been bothering me

    Hey guys, posted this in HW help, but its actually just a thought i had in chem class. I was wondering if light or heavy elements would be better at stopping slow moving neutrons? And how come? By heavy and light, i mean mass. Heres what i think. I thought a heavy element would have a...
  3. K

    Simple questions m8's about neutrons

    Hey guys, I was wondering if light or heavy elements would be better at stopping slow moving neutrons? And how come? By heavy and light, i mean mass. I always thought a heavy element would have a better chance of stopping particles because they have a high probability of smacking the...
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