# Search results

1. ### 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. ### 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. ### 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...