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1) A wire carrying a current of amps lies between the poles of a magnet. If the length of the wire is 12 cm and the magnetic field is uniformly 0.50 T perpendicular to the wire. What is the force on the wire measured to the nearest mN.

2) What is the force between two wires suspended from a telephone poles. The length of the wires are 50 m long and each wire is carrying a current of amps DC in opposite directions separated by 1 m? Answer to the nearest mN.

3) What is the magnitude of the magnetic field, to the nearest microT, generated by a straight wire carrying 5 amps, mm from the wire?

4) What is the magnitude of the force acting on an electron traveling at 3*10^5 m/s parallel to a T magnetic field. Please answer in Newtons.

5) The magnetic field of the earth is 0.55*10^-4 T in a certain location. What will be the force ,to the nearest aN (10-18N), on a completely ionized carbon atom (Z = 6) traveling with the solar wind with a velocity of km/s perpendicular to the magnetic field.

6) What is the mass in kilograms of a particle (q=1.6x10-19 C) traveling at 1x105 m/s perpendicular to a magnetic field of 1 T if the radius of its curved path is mm (Express your answer to 2 decimal places using scientific notation).

7) At the equator the magnetic field of the Earth is horizontal, points due north and has a magnitude of *10-4 T. How fast must a proton be moving (m/s) so that its weight is exactly balanced by the magnetic force acting on it. (Express your answer to 2 decimal places using scientific notation).

8) A transmission line is made up of three very long wires which when viewed "ends on" are arranged in the shape of an equilateral triangle and are at a distance of 50 cm from one another. Two of the wires carry a current towards the south while a third carries a current towards the north. If the magnitude of the current carried by each wire is A, what is the magnitude of the magnetic force per unit length (N/m) acting on the wire that carries current towards the north. (Express your answer to 2 decimal places using scientific notation).

9) An electron moves in a circular orbit of radius micro meters in a uniform magnetic field B = 0.15 T. What is its angular momentum in units of Kg m2/s ? (Express your answer to 2 decimal places using scientific notation).