dark light
Airliner World
Combat Aircraft
AeroPlane
Flypast
Airforces
Aviation
Pcpilot
Air

tomfellows

Forum Replies Created

Viewing 15 posts - 241 through 255 (of 2,085 total)
1 2 3 … 16 17 18 … 137 138 139
  • Author
    Posts
  • October 9, 2008 at 6:47 pm in reply to: General Discussion #316204
    tomfellows
    Participant

    a) is obvious
    b) You should know that the voltages in a series circuit always total the EMF.
    ie Emf= voltage across resistor + voltage across the internal resistance of cell

    From V=IR, we can say:
    emf = (current x resistance across resistor) + (current x internal resitance).

    Then do some simple algebra to get the Internal Resitance as the subject:
    Internal Resitance = Emf – (current x resistance across resistor) / current

    Current = V/R, so 1.48/10 = 0.148A.

    Then plug in the numbers to get r=0.338 Ohms

    October 9, 2008 at 6:47 pm in reply to: Physics Question #1898343
    tomfellows
    Participant

    a) is obvious
    b) You should know that the voltages in a series circuit always total the EMF.
    ie Emf= voltage across resistor + voltage across the internal resistance of cell

    From V=IR, we can say:
    emf = (current x resistance across resistor) + (current x internal resitance).

    Then do some simple algebra to get the Internal Resitance as the subject:
    Internal Resitance = Emf – (current x resistance across resistor) / current

    Current = V/R, so 1.48/10 = 0.148A.

    Then plug in the numbers to get r=0.338 Ohms

    September 22, 2008 at 11:20 pm in reply to: A Tribute To Manchesters Recently Fallen Airlines #489136
    tomfellows
    Participant

    Just browsing through my archives and came across these. Sadly, and somewhat surprisingly, I only ever took 2 Zoom photos.

    http://i7.photobucket.com/albums/y251/tomfellows/LGW%202%20MARCH%2007/IMG_0546.jpg

    http://i7.photobucket.com/albums/y251/tomfellows/Gatwick%2002%2001%2007/IMG_0100.jpg

    http://i7.photobucket.com/albums/y251/tomfellows/gatwick23oct07/IMG_1620w.jpg

    http://i7.photobucket.com/albums/y251/tomfellows/gatwick23oct07/IMG_1619.jpg

    http://i7.photobucket.com/albums/y251/tomfellows/gatwick23oct07/IMG_1532w.jpg

    http://i7.photobucket.com/albums/y251/tomfellows/October%2015th%20LGW/DSC_0144.jpg

    And the only ever photo I got of a Futura plane was last week in Dublin, parked up out of service:
    http://i7.photobucket.com/albums/y251/tomfellows/DSC00470.jpg

    September 22, 2008 at 10:31 pm in reply to: EPKT/KTW Poland #489142
    tomfellows
    Participant

    Wow, look at the detail on the 757 shots. Wonderful. 🙂

    September 22, 2008 at 10:27 pm in reply to: Luton 20.9.08 – Biztastic! #489146
    tomfellows
    Participant

    Sound advice there (as always) from Paul.

    Personally I enjoyed the tight crop of the EZY the most but even that may be a little tight. Also I’ve learnt to never cut off any part of the horizontal stabiliser on direct ‘side-on’ shots. When I started out I did this very regularly and hence the photos were rejected from photo sites like Jetphotos.net. That said I don’t think they look bad, cropped as they are.

    Anyway, enjoyed looking at them and keep up the good work!

    September 22, 2008 at 10:19 pm in reply to: I Was There, Too! (Luton 20/9/08) #489151
    tomfellows
    Participant

    Good stuff.

    The biz-jets seem to be the saving grace for Luton planespotting given the apparent domination of movements from RYR & EZY.

    September 22, 2008 at 10:16 pm in reply to: More from Heathrow Part 2 #489156
    tomfellows
    Participant

    Very, very good. I love those approach shots with the aircraft lining-up on the approach in particular. That said, all of them are mighty fine photos.

    September 22, 2008 at 10:13 pm in reply to: Newcastle Summer 08 [Large Post] #489161
    tomfellows
    Participant

    Great post. I like the clarity in the overflight shot. I also like the Red Arrows picture. 🙂

    September 20, 2008 at 8:59 pm in reply to: Winter Timetable #508755
    tomfellows
    Participant

    I always thought it was the 1st November :confused:

    Only for charter carriers. I think cloud_9 is right about it being the 26th.

    September 17, 2008 at 11:26 pm in reply to: First photo accepted on Airliners.net #489808
    tomfellows
    Participant

    Excellent job getting it on A.net. I’m not a fan of their site so stick to JP, but extremely well done getting hopefully the first of many on there!

    September 16, 2008 at 11:55 pm in reply to: Doom and Gloom In The Airline Industry (Merged) #509417
    tomfellows
    Participant

    I have just read the following on RyanAir’s website…. Its the final paragraph which got me….
    ……..
    Thoughts…….:rolleyes:

    Rick

    To be honest I expected as much from Ryanair. Is almost as bad as their ‘Closing Down Sale…for other airlines’ line – distasteful in the extreme. But we’ve come to expect strong PR from Ryanair and this is another example of that.

    September 10, 2008 at 2:00 pm in reply to: London Gatwick + Continental = No More #511539
    tomfellows
    Participant

    I am also not surprised. I would imagine that given the choice, maybe for a little more money, Heathrow is a more appealing airport than Gatwick due to it’s closer proximity to the centre of London plus also the greater range of airlines and destinations there. I imagine easyJet will snap up the vacant LGW slots.

    September 9, 2008 at 12:12 am in reply to: London Gatwick 30/08 (dial-ups beware) #490853
    tomfellows
    Participant

    Good catches with the Celebair and the Cubana. Great shots.

    September 7, 2008 at 6:01 pm in reply to: General Discussion #320317
    tomfellows
    Participant

    This just highlights why I gave up watching F1 last year. I have seen the incident and can’t for the life of me see why a 25 sec penalty is justified. Bizarre.

    September 7, 2008 at 6:01 pm in reply to: Hamilton Robbed #1900701
    tomfellows
    Participant

    This just highlights why I gave up watching F1 last year. I have seen the incident and can’t for the life of me see why a 25 sec penalty is justified. Bizarre.

  • Author
    Posts
Viewing 15 posts - 241 through 255 (of 2,085 total)
1 2 3 … 16 17 18 … 137 138 139