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6. what does rotating a patient while recieving radio therapy do?
- gives off radiation
- decays
- minimises exposure
- kills the cancer
7. when the wires are covered in two layers of insulated material
- fusing
- residual current device
- double insulation
- earthing
8. frequency and type of wave for ultrasound
- high and longitudinal
- low and transverse
- high and transverse
- low and longitudinal
9. when a nuclei decays it...
- loses electrons
- emits one or more types of radiation
- blow up
- break down
10. what type of particle can move?
11. gamma decay is what?
- helium nuclei
- electromagnetic radiation
- fast movig electrons
- rays
12. voltage = ?
- resistance divided by current
- resistance + current
- resistance x current
- current - power
13. therefore resistance = ?
- power x current
- current x voltage
- voltage divided by current
- power x voltage
14. radiotherapy uses what type of radiation?
15. beta decay is what?
- fast moving electrons
- helium nuclei
- radiation
- rays