Find the flux of Earth's magnetic field of magnitude 5.00 cross 10-5 T through a square loop of area 20.0 cm2 for the following:
(a) when the field is perpendicular to the plane of the loop
T · m2
(b) when the field makes a 60.0° angle with the normal to the plane of the loop
T · m2
(c) when the field makes a 90.0° angle with the normal to the plane
T · m2