Part of eval main bdd945f six, agent version bdd945f
Q. Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same direction are separated by a distance of 4.0 cm. Estimate the force on a 10 cm section of wire A, in newtons? expects 2 × 10⁻⁵ N
draft 24: failed while solving — RuntimeError: no equation determines the force on a wire on a from what is known the engine knows: known: current of a; current of b; distance from the wire of a; length in the field of a; force_on_a_wire_across_a_field(a): force on a wire on a == ((current of a * length in the field of a) * B) — not yet known: magnetic_field
Latest draft
question.rb1 question :two_parallel_wires do2 kind :numerical3 describes "Two long and parallel straight wires A and B carrying currents of %{current_a} and %{current_b} in the same direction are separated by a distance of %{separation}. %{force}, in newtons?"4 given current_a: "8.0 A"5 given current_b: "5.0 A"6 given separation: "4.0 cm"7 asks force: "Estimate the force on a 10 cm section of wire A"8 end
solution.rb1 solve :two_parallel_wires, using: [MagneticFieldOfCurrents, MagneticForce] do2 objects :a, :b3 4 take current_a: a.current5 take current_b: b.current6 take separation: a.distance_from_the_wire7 8 9 deduce_from "a 10 cm section", a.length_in_the_field => "10 cm"10 11 field = b.field_near_a_wire12 force = a.force_on_a_wire13 14 answer force:, in: "N", figures: 115 16 conclusion "Each wire produces a magnetic field at the other; the force per unit length is I*B, so the total force is I*l*B."17 end
round 24
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