Question1

A 58 kg pole vaulter running at 14 m/s vaults over the bar. Her speed while she is above the bar is 1.7 m/s. Neglect air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.

Question2

A small current element I d, with d = 3 mm and I = 1.9 A, is centered at the origin. Find the magnetic field d at the following points.

(a) On x axis at x = 3 m

(b) on x axis at x = -6 m

(c) on z axis at z = 3 m

(d) on y axis at y = 3 m

All answers must be in i,j,k coordinates