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OCR A LEVEL PHYSICS ,OCR A-LEVEL PHYSICS REAL EXAM WITH QUESTIONS AND ANSWERS [ALREADY GRADED A+}
OCR A LEVEL PHYSICS ,OCR A-LEVEL PHYSICS REAL EX
OCR A LEVEL PHYSICS ,OCR A-LEVEL PHYSICS REAL EX
OCR A LEVEL PHYSICS ,OCR A-LEVEL PHYSICS REAL EXAM WITH QUESTIONS AND ANSWERS [ALREADY GRADED A+} impedance matching - ANS---use of two substances of similar acoustic impedances to minimise reflection of ultrasound at the boundary between them activity - ANS---rate at which nuclei in a radioactive source decay, measured in becquerels alpha radiation - ANS---ionising radiation consisting of particles resembling a helium nucleus with a charge of +2e air resistance - ANS---resist...
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