A steel wire of length 1.90 m with circular cross-section must stretch no more than 0.280 cm when a tensile (stretching) force of 420 N is applied to each end of the wire. What minimum diameter is required for the wire?

Express your answer in millimeters. Take Young's modulus for steel to be Y = 2.00 ×10^{11} Pa .

ill do it for 100, also this isnt 80 its 40

iron would move it is magnetic there is a mag field around the current in the wire

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force