Chapter 4.4, Problem 74E

(a)

To determine

Richter-scale intensity of $x$ whose ground motion is $1000i_0$.

(b)

To determine

Richter-scale intensity of $x$ whose ground motion is $100,000 i_0$.

(c)

To determine

Richter-scale intensity of $x$ whose ground motion is $10,000,000 i_0$.

(d)

To determine

To fill: The blank of the statement: “Increasing the ground motion by a factor of ${10}^k$ increases the Richter-scale intensity by $\underset{\_}{}$ units.”.