A mirror has only one focal point while lens has ___ focal points each on either side.

Abox contains 40 number tiles numbered 1 to 40. if a tile is drawn at random, what is the probability that the number drawn is a multiple of 3 or 4? find p(multiple of 4 or multiple of 5)

Which of the following provides the same protection as safety glasses?

Which hypothesis most likely inspired leeuwenhoek’s experimentation with new technology? if the amount of magnification is correct, then an individual germ can be seen, because individual germs exist but are too small for human eyes. if the amount of magnification is correct, then wounds can be kept clean of germs, because wounds are often infected during surgery. if the correct medicine is used, then a certain disease can be cured, because different diseases are caused by different germs. if the correct medicine is used, then germs can be grown until they are large enough to see, because most germs are too small to see in nature.