1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Speed of light question

  1. Oct 2, 2006 #1
    Speed of light....question

    I've just started physics and I'm having difficulty with this problem.I'd really appreciate some help with how to go about doing it!Thanks!

    'The speed of light is 299800000 m/s. How many times could a light beam
    travel around the Earth in one day (the radius of the Earth is 6370 km)'

    Do I need to get the circumference of the earth first?
     
  2. jcsd
  3. Oct 2, 2006 #2
    yup get the circumference and distance covered by light in a day
     
  4. Oct 2, 2006 #3
    will try that!thanks!
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook