Try It 10.53: Comparing Earthquake Intensities in San Francisco
To compare the 1906 San Francisco earthquake (magnitude ) and the 1989 Loma Prieta earthquake (magnitude ), convert their magnitudes to intensities using the exponential form . The intensities are and , respectively. The ratio of the 1906 earthquake's intensity to the 1989 earthquake's intensity is . Subtracting the exponents gives , which evaluates to approximately . Thus, the 1906 earthquake was approximately times as intense as the 1989 earthquake.
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Ch.10 Exponential and Logarithmic Functions - Intermediate Algebra @ OpenStax
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Related
Evaluating a Logarithm by Converting to Exponential Form
Example: Evaluating Logarithms by Converting to Exponential Form
Graphing a Logarithmic Function by Converting to Exponential Form
Solving Logarithmic Equations by Converting to Exponential Form
Example 10.27: Comparing Earthquake Intensities
Try It 10.53: Comparing Earthquake Intensities in San Francisco
Try It 10.54: Comparing Earthquake Intensities in Chile and Los Angeles
Example 10.18: Converting to Logarithmic Form
Try It 10.35: Converting to Logarithmic Form
Try It 10.36: Converting to Logarithmic Form
Example 10.19: Converting to Exponential Form
Try It 10.37: Converting to Exponential Form
Try It 10.38: Converting to Exponential Form
Evaluating a Logarithm by Inspection
As an adult learner upskilling for a role as a financial data analyst, you are learning to use a forecasting tool that models growth over time. Your training manual states that a specific metric's timeline is modeled by the logarithmic equation . To configure the company's legacy software system, you must manually input this exact relationship in its equivalent exponential form. Which of the following equations should you enter?
You are a Quality Assurance (QA) specialist verifying a technical manual for a company's financial modeling software. The manual lists logarithmic growth models that must be correctly translated into exponential form for the software's calculation engine. Match each logarithmic equation found in the documentation to its mathematically equivalent exponential equation.
You are a junior technician at a sound engineering firm. A manual describes a signal's properties using the logarithmic equation . To convert this into its equivalent exponential form, , you must identify the structural role of each variable. In this conversion, the variable represents the ____ to which the base must be raised.
You are a health informatics technician reviewing a technical manual for a medical database system. The manual states that the relationship between a data scaling factor and the input value is defined by the logarithmic equation . The manual further states that this relationship is mathematically equivalent to the exponential equation . Based on the definition of logarithmic and exponential equivalence, is the manual's statement true or false?
Technical Reference: Logarithmic to Exponential Equivalence
Learn After
As a risk assessment analyst for an insurance firm, you are tasked with comparing historical seismic events to update property damage models. To begin comparing two earthquakes, you must convert their given magnitudes () into intensities (). Based on standard earthquake models, which of the following formulas correctly represents this conversion?
A seismic analyst for a city government is preparing a report comparing the 1906 San Francisco earthquake (magnitude 7.8) and the 1989 Loma Prieta earthquake (magnitude 6.9). Arrange the steps below in the correct mathematical order to determine how many times more intense the 1906 earthquake was compared to the 1989 earthquake.
As a trainee in an emergency management office, you are reviewing historical data for the 1906 San Francisco earthquake (magnitude 7.8) and the 1989 Loma Prieta earthquake (magnitude 6.9). Using the intensity model , match each description with its corresponding numerical value or mathematical expression used to compare these two events.
In a seismic safety report comparing two historical events, the 1906 San Francisco earthquake (magnitude 7.8) is found to be approximately ____ times as intense as the 1989 Loma Prieta earthquake (magnitude 6.9) when using the model .
According to the seismic intensity model , the ratio of intensities between the 1906 San Francisco earthquake (magnitude ) and the 1989 Loma Prieta earthquake (magnitude ) is correctly represented by the expression .