Which evidence card could be eliminated because it did not isolate variables? Evidence Card A: Magnetic pole arrangement

Evidence Card B: Number of wire coils

Evidence Card C: Rail material

Evidence Card D: Distance between the car and launcher

None should be eliminated.

the answer is to check all of them! they all apply well at least i think so!

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it