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  1. K

    Research Essay help!

    I actually just finished my IB EE in physics this week (good choice by the way, I honestly think it's the easiest subject for the EE), basically the best advice I can give you is do something simple and do a good job of it! I would say doing an experimental essay would be the best choice for...
  2. K

    Magnetic Field Direction

    Yup, simply use the right hand rule. You know the current is going to the right (positive x) and to levitate the rod you would need a force going up (positive y). So by using the right hand rule you should be able to find the direction of the magnetic field.
  3. K

    Is there a way to find out the theoretical stretch of an elastic band?

    I thought I could possibly use Poisson's ratio for rubber to calculate it, but I'm not sure what formula I could use. This might even just be too complicated for my level right now.
  4. K

    Bus acceleration physics problem

    Assuming you caught your bus we can make the two displacements equal each other: displacement of bus = displacement of you - 16m d1 = d2-16 v1t+0.5at² = v2t-16 Then solve for t. There's probably other ways of solving this algebraically, this is just the first one I thought of.
  5. K

    Hanging box - radius, length, mass, speed

    Don't forget: the string makes an angle of 28.0^\circ with the vertical. In your work you decided to change that so it's 28 degrees to the horizontal for some reason. (I'm hoping I read the question correctly, this is my first time on the forum)
  6. K

    Hanging box - radius, length, mass, speed

    If the string is 1.78m long then it should be the hypotenuse which is also 1.78m long, not the vertical line.
  7. K

    Is there a way to find out the theoretical stretch of an elastic band?

    I'm in the middle of doing an experiment where I find the heat dissipation by hysteresis through the stretching of an elastic band. I have experimentally found out how much heat is dissipated, but I was wondering if there is a way to theoretically find out the dissipated heat, most likely by...