What is radioactive dacay?

Along, straight wire with 3.0 a current flowing through it produces magnetic field strength 1.0 t at its surface. if the wire has a radius r, where within the wire is the field strength equal to 36.0% of the field strength at the surface of the wire? assume that the current density is uniform throughout the wire

Which feature of a heating curve indicates a change ofn state

Asher cycles 12 miles in 16 hours. what is his speed?