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: Omg help !

  1. Jan 12, 2004 #1
    omg help!!!!!!

    ok ppl im having trouble with this problem...

    A glacier moves with a speed of 41 nm/s. How many years would it take for the glacier to move .74km? answer in units of yr.

    ok and this is what ive done...

    i changed 41 nm to km which i got as 41*10^-6 ...

    and then i divided it by 0.74 and got some weird number like 31536000

    ur somebody please tell me how to do it
  2. jcsd
  3. Jan 12, 2004 #2
    first of all, a nanometer is 10^-12 kilometers

    so the velocity would actually be 4.1*10^-11 km/s

    now we convert this into km/h, so:

    (4.1*10^-11)*3600 = 1.476*10^-7 km/h

    now to get time it would take, we obviously use t = d/v:

    t = (0.74)/(1.476*10^-7)

    t = 5013550.136 hours

    which is approximately 572 years
  4. Jan 12, 2004 #3
    thanks so much u basically helped me through half of my homework!!! u guyz are awesome at this site!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook