The word 'physics' is a noun, a word for the branch of science concerned with the nature and properties of matter and energy; a word for a thing.
A noun functions as the subject of a sentence or a clause, and as the object of a verb or a preposition.
Example sentences:
Microphysics is a difficult field of physics to learn.
You would use the word "astrophysics" in a sentence in the role of an abstract noun. For example, "Astrophysics is the study of the physics of the universe."
The verb in the sentence "I'll never understand physics" is "understand."
Kinetic energy is a term used in physics. A ball has Kenetic (potential) energy.
The word doublet carries meaning in many fields, such as clothing, gemstones, linguistics, and physics.
I found her gum-chewing to be a constant annoyance.
Familiarity breeds contempt. He had very little familiarity with physics. The familiarity to his friend was striking.
My next class is physics.We studied electricity in our physics class. Physics is a hard subject.
That is not a sentence. And echo's are physics.
A verb phrase is the verb and its dependents (objects, complements, and other modifiers), but not the subject or its dependents.The verb phrase in the sentence is "will never understand physics".This is a tricky one because part of the verb (will) is hidden in the contraction "I'll".The subject of the sentence is I.
Receiving a Nobel prize signifies preeminence in a field.
Newton is a proton with fully charged particles.