Hello hi, physical things that we sense with all our senses have been studied under this branch Physics. Body, its mass, density, temperature, structure, colour, as it gets heated its physical changes of state such as solid, liquid and gas. Probing into we come to molecular level. Atoms then its configuration. Sub elementary particles such proton, neutron, electron its anti particle positron etc.
Photon as a packet of energy incase of radiations such light radiations. So we have all sorts of branches such mechanics which has dynamics and statics. Under dynamics kinetics and kinematics. So here we deal with displacement, velocity, acceleration, force, momentum, work, power, energy etc.
We have acoustics dealing with sound which is musical or noise to our hearing organ. Optics dealing with light which stimulates our seeing organ. By atomic level we have atomic physics, in nuclear level we have nuclear physics. As we would like to know about properties then we have to indulge in the branch of properties of matter which deals with elasticity, surface tension, viscosity, osmosis, diffusion etc
So it seems that it covers the entire field of this universe as it reaches the realm of space with stars, planets and comets. So astronomy becomes the branch
As we study physics, definitely it would take us to the realm of philosophy too. Albert Einstein a physicist exposed himself as a philosopher stating that Religion without science is BLIND and Science without religion is LAME.
Theory of relativity is the fantastic theory which would explore the different universes.
Stefan Hawking is one of the recent physicist who explains the birth of universe in a philosophical way
Now a days chemistry has expanded its branch physical chemistry. In Biology too we need physical instruments such microscope etc.
Even all branches have physics some where related to understand that subject effectively