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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

  • physics -

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

  • physics -

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

  • physics -

    whats the answer

  • physics -

    what ia answer?please help.

  • physics -

    0.74

  • physics -

    HOW DID U GET THAT?

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