BGCSE Physics 1427 case studies
BGCSE Physics 1427 · Put your knowledge to work in context.
BGCSE Physics (syllabus 1427) is a secondary-school science qualification taken in The Bahamas, normally at the end of a two-year senior course. It suits candidates who need a physics credential for further academic study, for technical and vocational pathways, or simply as evidence of competence in a science subject alongside biology and chemistry. The BGCSE Physics 1427 case studies are 5 cases and about 2,865 words.
1Plank on Two Trestles: Where Can the Box Go?
A 3.0 m uniform plank of mass 12 kg rests horizontally on two trestles. Trestle A is 0.50 m from the left end and trestle B is 2.50 m from the left end.
640 words, about 3 min2Choosing an Extension Lead for a 13 A Heater
A 15 m extension lead is used continuously at 13 A to supply a 3 kW fan heater from a 230 V socket. Two cables are available: 1.0 mm² copper, resistance 18.1 mΩ per metre of conductor, rated at 10 A; and 2.5 mm² copper, resistance 7.4 mΩ per metre, rated at 20 A.
594 words, about 3 min3Pushing a Lens to Magnification Eight
A student has a converging lens marked 15.0 cm, an illuminated object, a screen and an optical bench 1.50 m long. With the object at the 40.0 cm mark, the lens at the 60.0 cm mark and the screen at the 120.0 cm mark, a sharp image is formed.
567 words, about 3 min4Specific Heat Capacity: When Errors Cancel
A student places 200 g of water at 18.5 °C in a lagged copper calorimeter of mass 60 g and heats it with an immersion heater marked '50 W, 12 V'. The laboratory power supply actually delivers 11.0 V.
548 words, about 3 min5How Long Must the Source Be Stored?
A school stores a sealed gamma source whose half-life is 6.0 hours. With the source in its holder, a Geiger–Müller tube records 320 counts in 60 s.
516 words, about 3 min