PHYS 123 (PHYS123)

AQA AS LEVEL PHYSICS Paper 2 2021. A student investigates stationary waves using microwaves. Figure 1 shows a metre ruler fixed to a bench. The student places a microwave transmitter T at one end of the ruler and a vertical metal reflector R at the other end. R is at a right angle to the ruler. Figure 1 The student places a microwave detector D approximately one-third of the distance from T to R. When T is switched off, the microammeter connected to D reads zero. When T is switched on, ...

REVISION SCIENCE TO EXCEL IN A-LEVEL PHYSICS A-levelPHYSICS7408/3BB Paper 3 A hospital uses the radioactive isotope technetium-99m as a tracer. Technetium-99m is produced using a Molybdenum-Technetium generator on site at the hospital. Explain why the value of the half-life of technetium-99m: • makes it suitable for use as a tracer • means that it must be produced in a generator on site.

REVISION SCIENCE TO EXCEL IN A-LEVEL PHYSICS A-levelPHYSICS7408/3BC Paper 3 A gymnast dismounts from an exercise in which he swings on a high bar. Thegymnast rotates in the air before landing.

REVISION SCIENCE TO EXCEL IN A-LEVEL PHYSICS A-levelPHYSICS7408/3BD Paper 3