Question 2: A little earlier than the Chinese, the ancient Greeks knew of other objects such as ________, that when rubbed with fur would cause a similar invisible attraction between the two.
Question 6: It usually differs from ________ in that an applied physicist may not be designing something in particular, but rather is using physics or conducting physics research with the aim of developing new technologies or solving a problem.
Question 10: Physics relies upon ________ to provide the logical framework in which physical laws may be precisely formulated and predictions quantified.