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.
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.
There are several websites where one can find a guide for back exercises. Examples would include Bodybuilding, Livestrong, Orthoinfo, and Back Pain Fixed.
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.
This can depend upon several things such as where you currently are, your gender, age and many more. Usually, sciatica exercises would be charged between 50 and 300.
There are several exercises that will help you target the thighs. Some include squats, lunges and old-fashioned leg lifts.
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.
Graduate education is not necessary, however, you do need to pass several levels of standardized exams in order to be qualified for actuarial jobs