Tuesday, June 28, 2011

Answer


a. Electric dipole
b. τ = P× E
= PESinθ     ,(θ = 90:Sin90=1 )
= QaE

= 3×10-6 ×5×10-3×3×10-5
= 45×10-14 Nm
c. both translational motion and rotational motion
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