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Science Class Question...please Help!  
User currently offlineSEA nw DC10 From United States of America, joined Oct 1999, 491 posts, RR: 1
Posted (14 years 2 months 1 week 6 days 20 hours ago) and read 1331 times:

I have a question on my take home mid term....Why don't we hear the plane at the same moment we see the plane. Why is the noise delayed?

Anybody? I think it's because the engines are faced the oposite way or somthin...?


2 replies: All unread, jump to last
User currently offlineJhooper From United States of America, joined Dec 2001, 6210 posts, RR: 11
Reply 1, posted (14 years 2 months 1 week 6 days 20 hours ago) and read 1318 times:

Simple. Sound travels much slower than light. So as you see the plane, the light waves have traveled so fast (about 186,000 miles per second), but it will still take the sound much longer to reach you (since the sound waves only travel about 700mph).

Hope this helps.

Last year 1,944 New Yorkers saw something and said something.
User currently offlineDnl65 From United States of America, joined Jun 2001, 82 posts, RR: 0
Reply 2, posted (14 years 2 months 1 week 6 days 14 hours ago) and read 1295 times:

Ask yourself this question, which travels faster sound or light?

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