QUESTION 6 [4 Marks] A long wire carries current (I = 0.5 A as shown). An electron is moving at the speed of 2000 m/s at a distance 10 cm from the current carrying wire, making an angle of 45 relative to the wire. The magnitude of the electron's charge is |q|=1.6 x 10'19 C and its mass is 9.1 x 10'31 kg. , v=2,000 111! I' \\, 45 I e- '12 10 cm I=0.5 A What is the magnitude of the magnetic force on the electron? QUESTION 9 [4 Marks] This and the next question pertain to the following situation. A proton with charge q = +1.6 x 10" C and mass m = 1.67 x 102 kg is initially traveling horizontally in a magnetic field with velocity v = 800 m/s, as shown below. The proton experiences a downward acceleration due to gravity of g = 9.8 m/s . If the magnetic field were zero, the proton would follow the downward, parabolic trajectory shown in the dashed line. How large a magnetic field would have to be applied to force the proton to move in a straight line? B or O g QUESTION 10 [1 Mark] Which way would the field have to point?QUESTION 14 [1 Mark] The trajectory of the particle is best described as F =qu sin (6) 2 (3x104 C)[50?](4T)sin(22.5) =2.30>