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The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. ACCELERATION is the rate of change of velocity with time . DISPLACEMENT is the shortest distance from initial position to final position .
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Acceleration means change in velocity with respect to time.
ph scale tell how much a substance is basic or not .It's range is upto 0 to 14.
Displacement means shortest distance from inetional to final position.

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