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Predicted:97.25 UAI: 97.6 happiness=yes

your a noob!

ah u did it a different why, u used change in--> which is the same, but i'm not sure about your method: look at the solution i posted a few up and comment.

How can you though? ur ratio of mass to amps is completely incorrect! look at the first point 0 and something else?!

thats complete bullshit. the gradient is absolutely relevant; thats why they got u to draw the graph.

this is how i believe you solve part B: Find the gradient of the lobf (works out to be mass of rod/current (kg/A)) equate f=ma and f=(k*i1*i2*l)/d so ma=(k*i1*i2*l)/d a=(k*i1*i2*l)/d d=(k*i1*i2*l)/a now use ur line of best fit d=k*i1*l/gradient*a bang in the values u cannot use an...

BTW i think to get the 3 marks u have to use the gradient of the line of best fit to get M/I2, and u sub that in- u cant use any random point because the y intercept is not zero! u will definitely get the wrong answeri got them like 5cm apart or something by that method.

yeah i got that answer too! woohoo! my brain was struggling with that one=D