A long, straight wire lies along the zz-axis and carries a 3.90-AA current in the +z+z-direction. Find the magnetic field (magnitude and direction) produced at the following points by a 0.400 segment of the wire centered at the origin.

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward