Relationship between the period of revolution and the orbital radius Illustration Play

Relationships between voltage and current Animation Play

Representation of the data Student activity Play

Representation of the data Animation Play

Resistance Animation Play

Resistance Student activity Play

Resistance to disturbances Animation Play

Resonance Whiteboard exercise Play

Resonance Student activity Play

Resultant acceleration Animation Play

Reversibility of the Carnot cycle Animation Play

Reversibility of the Carnot cycle Student activity Play

Reversibility of the Carnot cycle Animation Play

Reversibility of the Carnot cycle Whiteboard exercise Play

Reversible and irreversible processes Whiteboard exercise Play

Reversible and irreversible processes Student activity Play

Reversible and irreversible processes Animation Play

Reversible and irreversible processes Animation Play

Reversible and irreversible processes Illustration Play

Reversible and irreversible processes Illustration Play

Risk of omission Animation Play

Risk of omission Student activity Play

Rocket engine parameters Animation Play

Roentgen spectra of elements – characteristic radiation Student activity Play

Root-mean-square current and voltage Student activity Play