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Matter, energy, motion, fields, waves, and physical models.
Guided learning
Move from describing motion to resolving forces, applying Newton's second law, and analyzing trajectories and oscillation.
Physics · foundation
Use units, amount of substance, and thermodynamic temperature to understand the state relationships of an ideal gas.
Physics · foundation
Explore propagation, superposition, imaging, electric fields, and magnetic force as connected physical representations.
Physics · introductory
Concept library
Vector field describing electric force per unit positive test charge.
→02Representing external forces as vectors and using their resultant to diagnose equilibrium or acceleration.
→03Equation of state connecting pressure, volume, amount, and thermodynamic temperature for the ideal-gas model.
→04Describing motion through position, displacement, velocity, acceleration, and time without specifying its causes.
→05Vector force on a straight current-carrying conductor segment in an external magnetic field.
→06Relationship between net external force and momentum change, reducing to F=ma for constant mass in an inertial frame.
→07Two-dimensional motion under uniform gravitational acceleration in the ideal projectile model.
→08Ideal oscillation produced by a restoring influence proportional to displacement from equilibrium.
→09Paraxial relationship among focal length, object distance, image distance, and magnification for an ideal thin lens.
→10A disturbance whose phase pattern propagates through space and time.
→11Superposition of waves and the dependence of resultant amplitude on relative phase.
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