Recent content by jpark31

Homework Statement 1. It has been estimated that Tour-de-France champion Lance Armstrong could generate a sustained 500 Watts of power over a 20-minute period, while a healthy young human male (HYHM) can generate about 300 Watts of power for 20-minutes. Lance and HYHM are going to race (on...

THANK YOU SO MUCH! Starting from scratch I didn't know anything and so you have been very patient with me, thank you for that. After integrating and plugging in the variables, I came out with approximately 6.984*10^-2*a^3/2 seconds.

Is the constant used in the conservation of energy just a arbitrary number "C"? Okay, so here's my latest attempt with your guys' help. V(r)=kq/r= 9*10^9(1.6*10^-19)/r=1.44*10^-9/r 1/2(mv^2)+(1.6*10^-19)(1.44*10^-9/r)= C 4.5545*10^-31v^2+2.304*10^-28/r=C v=sqr...

Wait so the limits of integration are zero to infinity? Is that what you meant when you said "potential zero in infinity"? I'm sorry but I've been searching and the only formula for conservation of energy that I see is the summation and differences in kinetic and potential energy.

F=kq1q2/r^2 so, F=[(9*10^9)(1.602*10^-19)(-1.602*10^-19)]/a^2=(-2.31*10^-28)/a^2 Electrostatic Potential is V(r)=k int(a to b) dq/r So the limits of integration would be 0 to a right? Then V=kq/r^2=(9*10^9)(1.602*10^-19)/a^2=1.4418*10^-9/a^2

Potential energy = mgh. But gravity is assumed to be 0, according to my professor. So potential is 0? One charge is an electron and the other is a proton, so e-=9.109-10^-31 kg and e+=1.673*10^-27 kg. Yes, the effects of an accelerating charge are supposed to be taken into account! Sorry if I...

Ahh I see. So the conservation of energy isn't the sum of kinetic and potential? E=U+K=1/2kx^2 + 1/2mv^2?

Yes I have studied calculus. I think he meant Conservation of energy? Mechanical Energy= (Kinetic+Potential)-(Kinetic_0+Potential_0).

Homework Statement Two charges with e+ and e- charge are separated a distance "a" apart. Assuming there's no gravity, how long does it take for the charges to collide? Homework Equations My professor said to use conservation. I'm guessing he means Wnc = (KE + PE) - (KEo + PEo) The...