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Since we don't know how to integrate a log, you needed to basically turn the whole thing on it's side and integrate under the curve bounded by the y-axis. Basic run-through on how to do it: - Get the equation in terms of x. I don't have the paper in front of me, but I think you end up with...

Yeah, only subtract the two equations if you need to find the area between them. As for splitting the integral up, you only need to do this if your graph crosses the x-axis (if working with an area bound by the x-axis) since once it crosses the x-axis, the area is negative and anything you...

It's definitely November 2010. If you go through all your log laws, etc., you should get that t=2.8872... which is in years. So that's 2 years + 0.8872... years. Multiply the 0.8872... to get it into months, and you get 10.6473... months. 2 years and 10 months from Jan 2008 is Nov 2010...

Yes, for the 2007 Q21, the right-hand palm rule indicates that the motor is spinning clockwise, and therefore the weight should be added to position X (left side) in order to stop the spinning. Shoom, if you're talking about the 2007 HSC also, then you need to apply the right-hand palm...