Its a higher national certificate, a british thing, I'm right in thinking this is mainly american?
Differentiation is definitely part of the next topic so maybe it was just to see how we'd handle it..
Firstly I have no idea how to tackle this one, I am not sure if we've been taught it yet or if its sort of a lead on to the next set of topics..
Homework Statement
The shear stress t in a shaft of diameter D under torque T is given by t = KT / \PiD3.
Determine the approximate error in...
I can only remember one of the ways i did it, as said i forgot to bring my paper work with me! :rolleyes:
I first rearranged it to give me:
(i/12.5)-1 = e-t/CR
Which then i made the left hand side of the equation G to make it easier for me (this may be were i went wrong on this one) i...
Homework Statement
i = 12.5(1-e-t/CR)
Current = i
Resistance = R
Capacitance = C
Time = t
Firstly i had to calculate the current flowing after 0.5s, given a 30k\Omega resistance and a 20µF capacitance.. easily done.
Then i had to work out how long it took to reach 10A, so...