Asubmarine that is in the sea what principle is that

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Many science fiction movies and tv shows have detected using a nuclear weapon to destroy astroids what problems does plait see with this plan