Light reflects off of the medium at a angle to which it initially struck the material. This means that if light hits a mirror at a 40-degree angle, it will bounce off at a degree angle. Draw a picture of what this looks like. (FILL IN THE BLANK)

i get back to u let me edit it later

10 years is the answer

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error