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

  1. Elena

    Coulomb’s Law:
    F=k•q₁•q₂/r² =…
    F=ma => a=F/m=…
    r=at²/2
    t=sqrt{2r/a)=…

  2. Ravi ANd Ashu

    no not this way its accelaration is continuously increasing so integration is required......

  3. fhj

    whats the answer

  4. Anonymous

    what ia answer?please help.

  5. Answer..

    0.74

  6. steven lou

    HOW DID U GET THAT?

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