/0's physics phread

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When sketching field lines around a bar magnet do you have to sketch the field inside the magnet?

How do you convert 5920kWh into GJ? I keep getting the wrong answer.

A magnet falls through the centre of a coil. At one stage the current through the resistor is . Which of the following is closest to the rate of change of the magnetic field at this time?
a)
b)
c)
d)

thanks!

[TrueTears]

for 2nd question didn't you do this at school today?

(I think you forgot the number of turns man, check the first part 50 turns!!!)

for first question... , you can work it out from there.

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lol thanks tt