Question

How do I do number 12

Answer 1

Answer:

d = √(k/R)

Step-by-step explanation:

Eliminate fractions by multiplying by the denominator, then divide by the coefficient of d². Finally, take the square root.

$R=\dfrac{k}{d^2}\\\\Rd^2=k \quad\text{multiply by d^2 }\\\\d^2=\dfrac{k}{R} \quad\text{divide by R }\\\\d=\sqrt{\dfrac{k}{R}} \quad\text{take the square root}$