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To create electromagnetic induction, which of the following has to move? a. a wire b. a magnet c. a transformer d. either a or b

Aparticle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. what are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field b⃗ =(1.63t)i^+(0.980t)j^?

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply