Suppose the magnetic field in a given region of space is parallel to the Earth's surface, points north, and has a magnitude of 1.80 10-4 T. A metal cable attached to a space station stretches radially outwards 2.50 km. Required:
a. Estimate the potential difference that develops between the ends of the cable if it's traveling eastward around Earth at 7.70 X 10^3
b. Which end of the cable is positive, the lower end or the upper end?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.