Odpowiedzi

2009-11-27T12:39:38+01:00
Q1 = q2 = 0,01C
m = 80kg
g = ok. 10 m/s^2
F = m*g = 800N
k = 9 * 10^9 N*m^2/C^2
r = ?

F = (k*q1*q2)/r^2
m*g = k*q^2 / r^2 ("na krzyż")
m*g*r^2 = k*q^2
r^2 = k*q^2/m*g
r = q*sqrt(k/m*g)

r = 0,01 * sqrt(9*10^9/80*10) = 0,01 * sqrt(11250000) = 33.54 m