How far away can a 9.0 earthquake be felt?

Related questions

1. What are the negatives of earthquakes?
2. What is the deadliest natural disaster in history?
3. What natural disaster kills the most?
4. Is the Queen in Nassau County?
5. Was there ever an earthquake in NYC?
6. Where is the safest place to be during an earthquake?
7. Was there an earthquake in New York just now?
8. Are all earthquakes naturally occurring?
9. What country has the least earthquakes?
10. How can humans cause earthquakes?

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