Question

1. Define a.
Gravity A:
b. Strong Nuclear Force A:
C. Weak Nuclear Force A:
2. What are the four fundamental forces of nature? A:
3. What does electromagnetic force act on? A:
4. Which of the four forces is the strongest?

Answer 1

1a. Gravity — the long‑range attractive interaction between anything with mass or energy; in Newtonian physics it follows an inverse‑square law, and in general relativity it is described as the curvature of spacetime caused by mass/energy.

1b. Strong nuclear force — the short‑range force that binds quarks into protons and neutrons (and holds protons and neutrons together in the nucleus); mediated by gluons (and, as a residual force, by mesons); strongest of the fundamental forces at subatomic distances (~1 fm).

1c. Weak nuclear force — a short‑range force responsible for processes that change particle flavor (e.g., beta decay); mediated by the W± and Z0 bosons; important in radioactive decay and neutrino interactions.

2. The four fundamental forces: gravity, electromagnetic force, strong nuclear (strong) force, and weak nuclear (weak) force.

3. The electromagnetic force acts on electrically charged particles (and on magnetic dipoles); it governs interactions between charges and moving charges (producing electric and magnetic effects).

4. The strongest of the four is the strong nuclear force.