to find the force on each molecule, you divided by the radius squared. don't do that - multiply by the distance instead--traditonally torque is distance * force
so it is 15000 * 3.4*10^-21 * .11*10^-9 = 5.6*10^-27
hey hey! I wasn't saying I didnt believe you, or that I thought you were wrong at all, you are obviously correct; I was essentially saying that I confused myself early on, and thus began doing things wronger as I worked
i tried that originally and still wasnt getting the correct answers, but the ones without t times vi were closer so i figured that was probably more right and that t pertained to how long it was just going for that velocity... shrug
okay - i guess I jut wanted to check other peoples answers against mine versus masteringphysics, but here goes:
1. initial speed of the second stone:
57=vi+.5(9.8)(2.3)^2
57=vi+25.921
vi=31.079
2. speed of second stone as it hits the water
vf = 31.079 + 2.3(9.8)
vf=53.619
(of course, this is...
simple velocity/acceleration/distance equation--but is mastering physics wrong?
A rock climber stands on top of a 57 -high cliff overhanging a pool of water. He throws two stones vertically downward 1.0 apart and observes that they cause a single splash. The initial speed of the first stone...