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!

Finding distance help please

  1. Jul 23, 2014 #1
    1. The problem statement, all variables and given/known data
    1. A flash of lightning is seen followed by the sound of the thunder 7.0 s later. If the temperature outside is 15 °C, how far away was the lightning strike?


    2. Relevant equations
    V(sound)= 331m/s+(0.59)(T)
    D=V(T)


    3. The attempt at a solution
    V(sound)=331+(0.59)(15)
    V(sound)= 339.85

    d=VT
    d= (339.85)(7)
    =2378.95
    Therefore the lightning struck 2378.95m away
     
  2. jcsd
  3. Jul 23, 2014 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Well done - treating the speed of light as infinite is probably good enough here.
    You may want to watch the sig figs though - all measurements are quoted to 2 sig figs. but your answer has six.
     
  4. Jul 23, 2014 #3
    Ok thank you, if I were to put this in significant digits what would the answer be? I am not really familiar with sig digs :/
     
  5. Jul 23, 2014 #4

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Finding distance help please
  1. Distance. please help! (Replies: 3)

Loading...