To practice problem-solving strategy 27.1: magnetic forces. a particle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, you can check your result by comparing its magnitude to the magnitude the acceleration would have if the particle's velocity had the same magnitude but it was perpendicular to the magnetic field. find the value of the expression

i think its

b

explanation:

bc its just b

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the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19