During a laboratory maintenance procedure, a technician vigorously rubs a synthetic acrylic safety barrier with a dry polyester cleaning cloth. Explain, in terms of the behaviour of subatomic particles, how the acrylic barrier becomes electrostatically charged during this process.
47 exam-style questions on Edexcel GCSE Physics 11.1 Charging by friction, covering 11.1.1 Charging insulators by friction, 11.1.2 Forces between charges, 11.1.3 Electrostatic phenomena, and 11.1.4 Earthing and removing charge. Each one has a worked solution and a mark scheme showing where the marks go.