because it does..
There is not "one major branch of physics", there are several.
Several times.
Who is Elbert? - Anyway, the laws of physics were not discovered by a single person, but by several people, over the course of several centuries.
You can perform several exercises that will help you attain the goal of a flat belly. These exercises include but are not limited to stomach crunches, press ups, pull ups and leg lifts.
Galileo Galilei graduated from the University of Pisa in 1585. He studied there for several years, focusing on subjects like mathematics and philosophy, before earning his degree. After graduation, he went on to make significant contributions to science, particularly in physics and astronomy.
There are "first laws" in several physics disciplines, for example the "First Law of Thermodynamics". There is none that is generally considered to be important enough to be considered the first law of physics in general.
There are several branches of science including biology. physics and chemistry.
This is needed in several cases, for example:To calculate the force of friction, you need the "normal" force, that is, the force perpendicular to the surface of contact.To add two vectors, you need to add the components in every dimension separately.If you do the exercises in your physics book, you will probably get ideas for more applications.
There are several websites where one can find a guide for back exercises. Examples would include Bodybuilding, Livestrong, Orthoinfo, and Back Pain Fixed.
Graduate education is not necessary, however, you do need to pass several levels of standardized exams in order to be qualified for actuarial jobs
There are several reasons to defer graduate school, such as gaining work experience, saving money, clarifying career goals, or dealing with personal issues.
No you do not have to go to a gym to perform the body of life exercises. You can also use home equipment or your can go for a run. There are several different choices.