A100-kg person sits on a 5-kg bicycle. the total weight is borne equally by the two wheels of the bicycle. the tires are 2.0 cm wide and are inflated to a gauge pressure of 8.0 × 105 pa. what length of each tire is in contact with the ground?

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.