1. Predict the number of bubbles per minute that would appear if a test tube were placed 80 cm from the light source. 3 bubble per minute
2. What is the dependent (outcome) variable in this experiment?
3. Name at least two things that remained constant in this experiment.
4. State one conclusion that could be drawn from the results of this experiment.

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e