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Homework Help: Number of periodic events in a given time span

  1. Dec 9, 2005 #1
    Light glows for every 13 seconds. How many times did it glow between 1:57:58 and 3:20:47am
  2. jcsd
  3. Dec 9, 2005 #2
    To answer this you must say when it glew first in the given time interval. Anyway the time interval contains 4970 seconds and thus the answershould be something near 382-383
  4. Dec 9, 2005 #3


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    Science Advisor

    "glew"?? Well, why not? The past tense of "blow" is "blew". Obviously, the past tense of "glow" is "glew"!

    Gosh, I'm glad English is such a reasonable language!
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