A car is moving forward with a force of 12N and friction
pushes back with a force of
2n, if it accelerates at a rate of
10 m/s/s, what is the mass of
the car?

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.