Physics

Problem

At an observatory the magnetic field makes an angle of

60^\circ

below the horizontal (positive downward) and the horizontal component of the field has magnitude

20\,\mu\text{T}

. What is the magnitude of the total magnetic field at the observatory? a)

10\,\mu\text{T}

23\,\mu\text{T}

40\,\mu\text{T}

35\,\mu\text{T}