During science class billy used litmus paper to determine the ph of an unknown liquid. the blue litmus paper turned red but there was no change in the color of the red litmus paper. the liquid billy tested is probably

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.