In 2004, an earthquake in a certain ocean had an amplitude 4.3 × 105 times the reference amplitude A. In 1985, an earthquake in a certain city had an amplitude 4.6 × 10³ times A. a. Find the Richter number of the ocean earthquake. b. Find the Richter number of the city earthquake. c. Find the ratio of the amplitudes of the ocean and city earthquakes. a. Find the Richter number of the ocean earthquake. R= (Type an integer or decimal rounded to the nearest tenth as needed.)

Applications and Investigations in Earth Science (9th Edition)
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ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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In 2004, an earthquake in a certain ocean had an amplitude 4.3 × 105 times the reference amplitude A. In 1985, an
earthquake in a certain city had an amplitude 4.6 × 10³ times A.
a. Find the Richter number of the ocean earthquake.
b. Find the Richter number of the city earthquake.
c. Find the ratio of the amplitudes of the ocean and city earthquakes.
...
a. Find the Richter number of the ocean earthquake.
R= (Type an integer or decimal rounded to the nearest tenth as needed.)
Transcribed Image Text:In 2004, an earthquake in a certain ocean had an amplitude 4.3 × 105 times the reference amplitude A. In 1985, an earthquake in a certain city had an amplitude 4.6 × 10³ times A. a. Find the Richter number of the ocean earthquake. b. Find the Richter number of the city earthquake. c. Find the ratio of the amplitudes of the ocean and city earthquakes. ... a. Find the Richter number of the ocean earthquake. R= (Type an integer or decimal rounded to the nearest tenth as needed.)
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