Homework Help: College Physics

Posted by Stephanie6 on Friday, July 6, 2012 at 10:35pm.

Two equally charged particles, held 2.8 x 10-3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 6.8 m/s2 and that of the second to be 6.8 m/s2. If the mass of the first particle is 5.3 x 10-7 kg, what are (a) the mass of the second particle and (b) the magnitude of the charge (in C) of each particle?

College Physics - Elena, Saturday, July 7, 2012 at 4:19am
(a) m2=m1=5.3 x 10-7 kg=m.
(b) F=m•a
F= k•q1•q2/r²
m•a= k••q² /r²,
q=sqrt(m•a• r²/k)
where k =9•10^9 N•m²/C²

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