A bullet moving at 200m/s hits a bag and comes to rest in 0.011sec. What is the momentum of the bullet just before hitting the bag find the average force that stopped the bullet

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

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)?