Environment 5302

Calculate the force exerted by two balls with charges of +3 μC and - 4 μC when they are 60 mm apart. Calculate the influence of the environment for a vacuum (k = 9.109 m / F).

Correct answer:

F =  30.3633 N

Step-by-step explanation:

$$\begin{gathered} Q_1=3\text{uC} \\ {Q}_2=4\text{uC} \\ r=60\cdot 1000=60000\text{um} \\ k=9.109\text{m/F} \\ F=Q_1\cdot Q_2\cdot k\cdot 10^9/r^2=3\cdot 4\cdot 9.109\cdot 10^9/60000^2=30.3633\text{N} \end{gathered}$$

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