A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip down `60^@` with the horizotnal. The horizontal component of earth's magnetic field at the place is `0*4G`. Determine the magnitude of earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to magnetic meridian has its north tip down at 60^@ with the horizontal. The horizontal component of earth's magnetic field at that place is 0*4G . Determine the magnitude of earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip down at 60^(@) with the horizontal.The horizontal component of the earth's magnetic field at the place is known to be 0.4G .Determine the magnitude of the earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 22^(@) with the horizontal . The horizontal componemt of the earth's magnetic field at the place is know to be 0.35 G . Determine the magnitude of the earth's magnetic field at the place .

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 22^@ with the horizontal. The horizontal component of the earths magnetic field at the place is known to be 0*35G . Determine the strength of the earths magnetic field at the place.

A magnetic needle free to rotate about the vertical direction (compass ) point 3.5 west of the geographic north . Another magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 18^(@) with the horizontal . The magnitude of the horizontal component of the earth ' magnetic field at the place is known to be 0.40 G . what is the direction and magnitude of the earth's magnetic field at the place ?