What is the average duration of an earhtquake in North America in seconds or minutes?
153867
It depends on what you define as an earthquake. A large earthquake that excites the earth's free oscillations will produce detectable ringing for many hours.
832796
The Geological Survey of Canada said the epicentre of the quake was about five kilometres from the town of Lively, west of Sudbury. It rattled the region at 2:22 a.m.
300281
Sound travels through the air at about 330 meters/second.  Kids have been taught for years in Scouts that it takes 5 seconds for a the sound of a lightning-generated thunderclap to travel a mile.  It doesn't take very sophisticated electronics to generate a sound pulse, simultaneously start a clock, and measure the time it takes for the sound to bounce off its target and return.  Real estate agents for years have used a small device that does this to measure room sizes.  Limiting factors are the distance to be measured and the amount of sound reflected.
217048
http://www.bbc.co.uk/science/hottopics/naturaldisasters/earthquakes.shtml
156551
available at housequake.com in the video section.
508796
it depends on the situation and your physical condition at the certain time but on normal condition and circumstance, i'd say 2 - 3 minutes :-)
864791
A.) 3.02891 seconds\nB.) 290.1 m/s\n\nTrust me... =)
175595
epicenter\nif you want to learn more:\nhttp://earthquake.usgs.gov/learning/facts.php
363713
Depends on where you live the new standard is 5 seconds though
401109
between 10 and 30. thats not to say it cant be shorter or longer. dont worry about the lenght of time just enjoy the situation!!!
28302
For usual compression mp3, on average 1Mb=1 minute,\nso:\n\n128Mb ~ 2 hrs\n256Mb ~ 4.25 hrs\n512Mb ~ 8.5 hrs
1051065
I recommend going to NOAA's Web site. Try this link, I hope this helps you. http://www.ngdc.noaa.gov/mgg/image/2minrelief.html
717054
Try: http://earthquake.usgs.gov/research/monitoring/anss/ for definitions.
519901
how many and where earthquakes were recorded taking place today
917751
about 90 seconds, but it depends on elevation (because of atmospheric pressure)
277903
16 seconds was my best time. :o(
380667
When you see the lightening, count seconds until you hear the thunder.  Each second is approximately 1 mile.