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f = 1/(2 * π) * √(

**k**/m) The first step is solve problem 20 to determine the spring constant... to determine the increase of the length. ∆ L = 0.15 – 0.10 = 0.05 meter**k**= 4 ÷ 0.05 = 80 N/m Now we can use the spring constant to calculate the...2 Answers · Science & Mathematics · 16/08/2019

F[1,2] = F[2,3] -

**k*** Q[1] * Q[2] / r[1,2]^2 = -**k*** Q[2] * Q[3] / r[2,3...2 Answers · Science & Mathematics · 11/08/2019

... following equation is used to solve this problem. F =

**k*** Q1 * Q2 ÷ d^2 I use 9 * 10^9 for**k**. The unit of the...2 Answers · Science & Mathematics · 16/08/2019

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