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Physics 12 - Magnetic and Electric fields help

Hiya. This is apparently Canadian Gr.12 Physics work.

1. What would happen to the direction of the magnetic force if the loop of wire were to undergo one half turn without reversing the direction of the current in the loop? Show the starting position.

2.Knowing the formulas for magnetic force, describe how each of the following factors influences the magnitude of the magnetic force and give the reason:
a) Strength of the magnetic field
b) speed of the magnet passing the coil
c) number of loops
d) the current

3. explain why the generator effect would occur in the same way if the wire were moved rather than the magnet.

4. Would two parallel wires carrying a current in opposite directions repel or attract one another? explain.

5. A charged particle is travelling west through a downward magnetic field and it experiences a magnetic force directed to the north. Using the appropriate hand rule, determine if the charge is negative or positive. Explain all finger directions and the palm direction.

6. An electron (m=9.11 x 10^-31 kg) enters a downward magnetic field of 5.00x10^-1 T with a velocity of 6.50x10^6 m/s West. Calculate the radius of the circular path it will follow when it is travelling within the magnetic field.

7. A 0.120m long copper wire has a mass of 9.02g and is carrying a current of 5.10 A perpendicular to a uniform magnetic field. This apparatus is placed in a strong magnetic field and the wire is found to leviate. Calculate the magnetic field strength.

>_> How the hell do these dam magnets work?
Thanks.