Answer
$R_{2}=k\cdot \frac{L_2}{r_2^4}$
Work Step by Step
Given the equation
$$R=k\cdot\dfrac{L}{r^{4}}\quad\quad(1)$$
we replace $R=R_2$, $L=L_2$ and $r=r_2$ in equation $(1)$:
$$R_{2}=k\cdot \dfrac{L_2}{r_2^4}$$
Calculus with Applications (10th Edition)
by Lial, Margaret L.; Greenwell, Raymond N.; Ritchey, Nathan P.
Published by
Pearson
ISBN 10:
0321749006
ISBN 13:
978-0-32174-900-0
Chapter 13 - The Trigonometric Functions - Chapter Review - Review Exercises - Page 702: 92
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