Question

physicists at the turn of the twentieth century found that the laws described by newton in the principia are best applied where? multiple choice question. at the microscopic level at the macrocosmic level in the physical observable world in the psychological realm

Answer 1

The laws described by Newton in the Principia are best applied at the macrocosmic level in classical mechanics.

Step-by-step explanation:

Physicists at the turn of the twentieth century found that the laws described by Newton in the Principia are best applied in the macrocosmic level.

The laws of motion formulated by Newton work well for objects that are larger than the size of most molecules and are moving at speeds much less than the speed of light. These constraints define the realm of classical mechanics, which is the domain where Newton's laws provide a good approximation to motion.

Answer 2

Newton's laws best apply at the macrocosmic level, where objects move much slower than the speed of light and are larger than molecules, defining the realm of classical mechanics.

Step-by-step explanation:

The laws described by Newton as outlined in the Principia are found to apply best and produce a good approximation to motion at the macrocosmic level. This includes motion involving objects moving at speeds significantly less than that of light—generally less than about 1% of the speed of light—and when dealing with objects large enough to be seen with a microscope but larger than the size of most molecules (about 10-9 m in diameter). These constraints define the realm of classical mechanics. With the advent of the twentieth century, modern physics, including the theory of relativity developed by Albert Einstein, and quantum theory, emerged to address phenomena where classical mechanics no longer provided an accurate description, such as at very high speeds comparable to the speed of light or at the microscopic scale involving atoms and subatomic particles.