The figure shows a 15 cm -long metal rod pulled along two frictionless, conducting rails at a constant speed of 3.9 m/s. The rails have negligible resistance, but the rod has a resistance of 0.75 N .(Figure 1) Part A What is the current induced in the rod? Express your answer using two significant figures. nνα ΑΣφ ? I = A Submit Request Answer Part B What is the magnitude of the force is required to keep the rod moving at a constant speed? Express your answer using two significant figures. Hνα ΑΣφ ? F = N Submit Request Answer • Part C And what is the direction of this force? Please Choose v Please Choose To the right. To the left est Answer

Two long, parallel wires are separated by a distance of 3.40 cm. The force per unit length that each wire exerts on the other is 4.60x10-5 N/m, and the wires repel each other. The current in one wire is 0.640 A. Part A What is the current in the second wire? Express your answer in amperes. I = for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A Submit Part B Request Answer Are the two currents in the same direction or in opposite directions? In the same direction In opposite direction Submit Previous Answers ✓ Correct A

The magnetic field perpendicular to a single 17.2- cm -diameter circular loop of copper wire decreases uniformly from 0.750 T to zero. Part A If the wire is 2.75 mm in diameter, how much charge moves past a point in the coil during this operation? The resistivity of copper is 1.68 ×10−8Ω⋅m .

please answer all parts!