Use ampere’s law to find the magnetic field (a) inside and (b) outside of a long straight cylinder of current with current density j and radius r. remember that j = i/a. when indicating the direction, describe it as clockwise or counterclockwise when looking at the wire with the current going away from you.

Consider motion in one dimension. (the sign of the vector quantities is their direction indicator.) an object moves in the positive x-direction with speed 2.9 m/s for 4.5 s. it stops for 3.8 s and then moves in the negative x direction with speed 2.8 m/s for 4 s. what is the total distance traveled by the object in units of meter? enter a number with two digits behind the decimal point.