First of all, my GPA isn't that great-I should have put in much more effort than I have and it is the end of my sophomore year. I'm not sure yet about what topic in astrophysics I want to study (it's all equally fascinating at this point) but I do want a Ph.D. in it...
That being said, should...
So I was just at a hockey game and noticed that the game pucks were being kept on ice in a cooler before they were to be used. When I asked about this I was told it was to keep the pucks from being more 'bouncy.' Why does this work? I would think that the colder they are, the bouncier they...
First: Theoretically, is it possible to transfer all of an object's KE to another object? e.g. (ignoring gravity, friction, sound, etc.) an object with mass=M and 1eV collides with another object of mass=m and 0eV-- afterwords, object M has 0eV and object m has 1eV (conservation of...
Yeah I thought a hard exterior w/ softer inside would be best too. Thanks for the info- I just had to make sure I wasn't crazy or completely missing some concept for thinking the helmets with give might be better... for some hits anyway.
I recently got a concussion from playing hockey- I think it's time for a new helmet.
I was looking at a new-ish helmet that claims to have superior protection than the others but a video promo for it was sort of unsettling for me:http://www.youtube.com/watch?v=yAV99h1Aeg0e. At around 3:00 it...