Aperson walks north for 50 m at 0.5 m/s, stand still for 60 seconds and then walks south back 50 m to the starting point at 2 m/s. find a) the total distance traveled, b) the total displacement, c) the average speed and d) the average velocity.

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.