3.Suppose that an earthquake occurs, and the epicenter is 80 km from a recording

Science
Tutor: None Selected Time limit: 1 Day

how many seconds would it be 

Sep 30th, 2015

Thank you for the opportunity to help you with your question!

P-waves covers about 4.8*10^3km in 8 minutes.

Given that;

4800km = 8min

80km = ?

=80*8/4800=

=0.1333333

0.133333*60

= about 8 seconds


Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 30th, 2015

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