If an object that weighs 20 N is lifted from the ground to a
height of 0.32 meters, then the increase in the object's
gravitational potential energy would be approximately 4.4 J.
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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.