Two men are pulling a tree in one direction while a third is chopping it down. The ropes make an angle of 30°. The first man pulls with a force of 430 N and the second man pulls with a force of 350 N. Use the parallelogram method (tail-to-tail method) to determine the resultant of their pulling forces.​

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?