A string attached to an airborne kite is maintained at an angle of 41 degrees with the horizontal. If a total of 152 m of string is reeled in while bringing the kite back to the ground, what is the horizontal displacement of the kite in the process

The earth's magnetic field, with a magnetic dipole moment of 8.0×1022am2, is generated by currents within the molten iron of the earth's outer core. suppose we model the core current as a 3000-km-diameter current loop made from a 1000-km-diameter “wire.” the loop diameter is measured from the centers of this very fat wire.to decide whether this is a large or a small current density, compare it to the current density of a 7.0 a current in a 2.0-mm-diameter wire.