A 10-cm-long thin glass rod uniformly charged to 15.0 nCnC and a 10-cm-long thin plastic rod uniformly charged to - 15.0 nCnC are placed side by side, 3.60 cmcm apart. What are the electric field strengths E1E1E_1 to E3E3E_3 at distances 1.0 cm, 2.0 cm, and 3.0 cm from the glass rod along the line connecting the midpoints of the two rods?

real, smaller and upside-down.   so the answer should be b.

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.