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Constant-speed circular motion still has centripetal acceleration.
In SHM, displacement, velocity, acceleration are sinusoidal, 90° out of phase.
Force between two masses ∝ product of masses, inverse square of distance.
Stored energy between two masses — zero at infinity, negative at finite separation.
Speed at which gravity exactly provides the centripetal force.
Force per unit positive test charge around a source charge.
Work per unit charge to bring a charge from infinity; equipotentials.
Charge stored per unit voltage; geometry sets the value.
Combination rules for capacitor networks.
Lorentz force F = qv × B and the resulting circular trajectory.
Force on a current segment and torque on a current loop.
Standard model building blocks — quarks, leptons, antimatter, and hadron classification.
Exponential decay; T₁/₂ = ln2/λ; activity A = λN.