A heavy brass cylinder falls through a tall container of thick glycerin. Which statement correctly describes what happens to the brass cylinder and the glycerin as the cylinder falls?
Both the brass cylinder and the glycerin become warmer.
Only the brass cylinder becomes warmer.
Only the glycerin becomes warmer.
Neither the brass cylinder nor the glycerin becomes warmer.
533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.