by what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake…

by what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude 5.3?\nm = logleft(\frac{i}{i_0}\right)\n$m =$ the magnitude of an earthquake\n$i =$ the intensity of an earthquake\n$i_0=$ the smallest seismic activity that can be measured, which is 1\n1.01\n1.21\n1.26\n10.44

by what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude 5.3?\nm = logleft(\frac{i}{i_0}\right)\n$m =$ the magnitude of an earthquake\n$i =$ the intensity of an earthquake\n$i_0=$ the smallest seismic activity that can be measured, which is 1\n1.01\n1.21\n1.26\n10.44

Answer

Explanation:

Step1: Write equations for each magnitude

For magnitude $M_1 = 5.4$, we have $5.4=\log\left(\frac{I_1}{I_0}\right)$. Since $I_0 = 1$, then $5.4=\log(I_1)$. By the definition of logarithm, $I_1 = 10^{5.4}$. For magnitude $M_2 = 5.3$, we have $5.3=\log\left(\frac{I_2}{I_0}\right)$. Since $I_0 = 1$, then $5.3=\log(I_2)$ and $I_2 = 10^{5.3}$.

Step2: Find the ratio of intensities

We want to find the ratio $\frac{I_1}{I_2}$. Substitute $I_1 = 10^{5.4}$ and $I_2 = 10^{5.3}$ into the ratio: $\frac{I_1}{I_2}=\frac{10^{5.4}}{10^{5.3}}$. Using the exponent - rule $\frac{a^m}{a^n}=a^{m - n}$, we get $\frac{10^{5.4}}{10^{5.3}}=10^{5.4 - 5.3}=10^{0.1}$.

Step3: Calculate the value of $10^{0.1}$

$10^{0.1}\approx1.26$.

Answer:

C. 1.26