Point charges q1 = -4.5 nC and q2 = +4.5 nC are separated by...

Point charges $q_1 = -$4.5 nC and $q_2 = +$4.5 nC are separated by 3.1 mm, forming an electric dipole. (a) Find the electric dipole moment (magnitude and direction). (b) The charges are in a uniform electric field whose direction makes an angle of 36.9$^\circ$ with the line connecting the charges. What is the magnitude of this field if the torque exerted on the dipole has magnitude $7.2 \times 10^{-9}$ N $\cdot$ m ?

Point charges $q_1 = -$4.5 nC and $q_2 = +$4.5 nC are
separated by 3.1 mm, forming an electric dipole. (a) Find the
electric dipole moment (magnitude and direction). (b) The charges
are in a uniform electric field whose direction makes an angle
of 36.9$^\circ$ with the line connecting the charges. What is the magnitude
of this field if the torque exerted on the dipole has magnitude
$7.2 \times 10^{-9}$ N $\cdot$ m ?

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