Why can't the position of an electron be determined with certainty?

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

Asolid that forms and separates from a liquid mixture is called

What is the main reason why some developing countries fear the increase the free trade policies around the world?