Lực tương tác giữa Hai điện tích q1 = quy 2 = 0,5 nhân 10 mũ trừ 9 đặt cách nhau 10cm trong không khí là

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.