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IB Extended Essay! Need Help!

  1. Mar 25, 2010 #1
    Hello everyone
    I'm in my junior high school year and my school says it's time to plan for my Extended Essay
    I've decided on the topic below:
    The effect of the number, length, width and material of the propeller blades on the velocity of a propeller boat.
    I plan to build a miniature model of a boat, fix a motor to it and fix propeller blades of different materials onto them and measure the velocity of the boat against various parameters.
    Please evaluate this topic and please please suggest any any any methods of improving it.
    Also, I do not have access to lots of resources
    Thanks a lot
    P.S: If you think my topic is rubbish please say so and suggest any other one for me.
  2. jcsd
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