Homework Help: Pre-Calculus

Posted by Andy on Monday, December 21, 2009 at 1:55am.

The Richtr scale was evied y Cahrles F.Richter a American geologist. The scale is based on the equation M(x)=logx/x0(little 0), where x is the seismographic reading of the earthquake and x0 i 1 miron 0.001mm (the seismographic reading of a zero-level earthuquake)

a) Determine the magnitude of an earthquake with a seismographic readin of 1 mm
b)It is true that an earthquake of magnitude 8 i twice as intense as an earthquake of magnitude 4? Explain
c) Express the equation M=logx/x0(little 0) in exponential form
d) An earthquake measuring 6.1 on the Richter cakeoccoedin Greece on June 15, 1955. Use your results form (c) above to determine its seismographic reading

Pre-Calculus - drwls, Monday, December 21, 2009 at 6:39am
Your "x0 i 1 miron 0.001mm"
is unintelligible. Please make sure you typed the question correctly.

Since the Richter scale is a logarithmic one, the answer to (b) is obviously "no".

A magnitude 4 earthquake causes very little damage, even near the epicenter. A magnitude 8 earthquake can destroy buildings, bridges, elevated highways, and dams. Seismograph amplitudes will be about 10,000 times higher. (Note that Log(base10) of 10^4 = 4)

Answer this Question

Related Questions

Science - Which scale measures the amount of damage after an earthquake? Richter...
Algebra 2 - PLEASE HELP-DUE APRIL 5TH, 2011!!!! EARTHQUAKES an earthquake rated ...
math30 - The 1933 earthquake in Japan registered 8.9 on the Richter scale. a.The...
maths - The magnitude of an earthquake with intensity I is measured using a ...
Richter scale question - An earthquake registers 6.1 on the richter scale. What...
math - What is the magnitude on the Richter Scale of an earthquake measuring 3.7...
science 6th grade - I am suppose to explain how the moment magnitude and Richter...
Intermediate Algebra - The magnitude of an earthquake on the Richter scale is ...
physics - If you stand on a bathroom scale, the spring inside the scale ...
physics - If you stand on a bathroom scale, the spring inside the scale ...

For Further Reading

First Name:
School Subject:
Answer: