Light travels 10 meters how fast?

  • 11 Replies
  • 4527 Views

0 Members and 1 Guest are viewing this topic.

*

Offline sstaubin

  • First timers
  • *
  • 3
    • View Profile
Light travels 10 meters how fast?
« on: 30/10/2006 21:17:13 »
Here's a basic question.

Measured in seconds, how fast does light travel 10 meters?

Could you show me how you came up with the answer?

Thanks.

*

Offline syhprum

  • Neilep Level Member
  • ******
  • 3932
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #1 on: 30/10/2006 21:25:29 »
Light travels at 300,000 Km/S hence to travel 10 meters would take 1/30 micro seconds
syhprum

*

Offline sstaubin

  • First timers
  • *
  • 3
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #2 on: 30/10/2006 21:40:23 »
Is that .0000333333 seconds? 
« Last Edit: 30/10/2006 21:55:12 by sstaubin »

*

Offline Soul Surfer

  • Neilep Level Member
  • ******
  • 3345
  • keep banging the rocks together
    • View Profile
    • ian kimber's web workspace
Re: Light travels 10 meters how fast?
« Reply #3 on: 30/10/2006 22:52:21 »
300,000 km/sec  =300,000,000 m/sec  three hundred million meteres per second.

so ten metres in  1/ 30,000,000 sec or  1/30 microseconds as stated

                           -6
this is 0.033  x10      or 0.00000003333 seconds

however I always found it best to think of it travelling about a foot in about one nanosecond  which  gets the scale right
Learn, create, test and tell
evolution rules in all things
God says so!

*

Offline sstaubin

  • First timers
  • *
  • 3
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #4 on: 31/10/2006 00:01:22 »
Seven zeros... That's what I thought at first, but a calculator convinced me otherwise.

Thanks.

*

Offline lightarrow

  • Neilep Level Member
  • ******
  • 4586
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #5 on: 31/10/2006 13:46:47 »
Never make us convince from calculators!

*

Offline simeonie

  • Sr. Member
  • ****
  • 351
    • View Profile
    • http://www.simeonie.co.uk
Re: Light travels 10 meters how fast?
« Reply #6 on: 07/11/2006 13:21:48 »
AHEM it is 286,000 km/s lol
----------------------
MY NAME IS NOT REALLY SIMEONIE IT IS SIMON!!!

*

Offline lightarrow

  • Neilep Level Member
  • ******
  • 4586
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #7 on: 07/11/2006 19:27:58 »
AHEM it is 286,000 km/s lol
What, it is 286,000 km/s?

*

Offline syhprum

  • Neilep Level Member
  • ******
  • 3932
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #8 on: 07/11/2006 20:00:26 »
This erroneous value for 'c' just shows the folly of mixing metric and imperial units!
syhprum

*

Offline lightarrow

  • Neilep Level Member
  • ******
  • 4586
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #9 on: 08/11/2006 12:49:03 »
Ok, but, in case, it's 186,000 miles/hour.

*

Offline eric l

  • Hero Member
  • *****
  • 514
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #10 on: 08/11/2006 13:49:10 »
Ok, but, in case, it's 186,000 miles/hour.
Seems very slow light to me, if it is indeed miles/hour and not miles/second !
"Wonder is no wonder" (Simon Stevin 1548-1620)

*

Offline lightarrow

  • Neilep Level Member
  • ******
  • 4586
    • View Profile
Re: Light travels 10 meters how fast?
« Reply #11 on: 08/11/2006 19:26:51 »
186,000 miles/second. I wanted to see if you were careful!
(i hope someone could believe me!)