Apassenger walks from one side of a ferry to the other as it approaches a dock. passenger's velocity is 1.55 m/s due north relative to the ferry, and 4.50 m/s at an angle of 30.0° west of north relative to the water. (a)what is the magnitude of the ferry's velocity relative to the water? (b) what is the direction of the ferry's velocity relative to the water?

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.