The diagram below shows the positions of the Earth and Sun during different times of the Earth year. Each position represents the first day of a particular season. Use the labels to correctly identify the season that the Northern Hemisphere is beginning to experience in each position.

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.