Which branch of science involves the study of matter and energy

Physics

Explanation:

Physics is the branch of science that handles the study of different phenomena in the nature. The four pillars are thermodynamic, classical mechanics, electromagnetism and quantum mechanics.

Thermodynamics studies the temperature of an object. Classical mechanics studies the cinematic and dynamic of bodies. The electromagnetism studies the electric and magnetic properties of the objects. And quantum mechanics studies the behavior of matter in a macroscopic scale.

In all of the cases mentioned above, energy is present in its different forms (mechanic energy, kinetic energy, potential energy).

come closer and become far apart and become steam/gas

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this