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Electricity & circuits →
What is fixed: charge, potential, current or the connection?
Subject guide
Energy & momentum →
Which conservation law fits this stage of the motion?
Subject guide
Fluids →
Which pressure, shape or flow model applies here?
Subject guide
Magnetism & induction →
Is the field turning motion, or is changing flux driving a current?
Subject guide
Measurement & tools →
How much can a measurement really tell you?
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Modern physics →
Which energy scale explains the observation?
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Motion & forces →
Can you explain the motion before choosing an equation?
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Optics →
Do you need a ray, a phase difference or an aperture?
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Oscillations & waves →
What is oscillating, and what is travelling?
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Rotation & gravity →
What changes when motion has an axis or an orbit?
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Thermal physics →
Where does the energy go when temperature does not change?
Study chapter
Alternating circuits: phase, RMS and real power →
Build the circuit response from derivatives, then use phasors and energy to check it.
Study chapter
Capillarity and curved interfaces →
Read the meniscus, count the interfaces and connect pressure, height and surface energy.
Study chapter
Connected bodies, sliding friction and accelerating frames →
Build force equations from the system, the contact state and the geometry of each connection.
Study chapter
Continuity and energy in flowing fluids →
Track mass first, then connect pressure, speed and height along a valid flow model.
Study chapter
Coupled coils and transformer reasoning →
Track shared flux, winding polarity, stored energy and the load seen by the source.
Study chapter
Current, resistance and circuit constraints →
Connect microscopic drift to wire geometry, circuit topology and temperature-dependent power.
Study chapter
Damping, driving and the meaning of resonance →
Follow the energy, impose the initial conditions, and say which response is being measured.
Study chapter
Elastic response and measuring Young’s modulus →
Separate material stiffness from specimen geometry, then infer a modulus from a controlled extension experiment.
Study chapter
Electric forces, fields and charge distributions →
Use vectors, integration and symmetry to choose the right method for an electrostatic field.