[填空题]
Calculate the force on an airplane which has acqw-q8qif ;ax0cgzg:n n8jo*iaa5z 5 3f uired a net cb z23- (swjrzr/v mc7rharge of $1550\mu C$ and moves with a speed of 120 m/s perpendicular to the Earth’s magnetic field of $5.0\times10^{-5}\mathrm{~T}$. $ \times10^{-6 }\;N$
