50 points quickly

for which pair of objects would adding the same amount of electrons to each object result in a decrease in the electric force?

two positively charged objects
two negatively charged objects
two objects that have no charge
two objects that have opposite charges x not this one

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line