If astronauts built a pendulum on the moon that was exactly the same as one on earth, what would be different about the pendulum’s motion on the moon?

The slope of a velocity time graph over any interval of time gives the during that interval

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?

If you wanted to move an electron from the positive to the negative terminal of the battery, how much work w would you need to do on the electron? enter your answer numerically in joules.