physics
posted by stranger
Two point charges +q=1 μC and −q=−1 μC with mass m=1 g are fixed at the positions ±r⃗ 0 with r0=1 m. The charges are released from rest at t=0. Find the time τ in seconds at which they collide.Hint: Can you do it without integrating by using Kepler's laws?
1/4pienot =9 *10^9 m/F

Elena
Coulomb’s Law:
F=k•q₁•q₂/r² =…
F=ma => a=F/m=…
r=at²/2
t=sqrt{2r/a)=… 
Ravi ANd Ashu
no not this way its accelaration is continuously increasing so integration is required......

fhj
whats the answer

Anonymous
what ia answer?please help.

Answer..
0.74

steven lou
HOW DID U GET THAT?
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