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The diagram shows a velocity-time graph for a car moving in a straight line. At point P the car must be:
Q3: The vector <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3976/.jpg" alt="The vector
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Q15: If the density of states is N(E)
Q21: The figure shows the energy levels for
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Q56: A uniform narrow bar, resting on ice,
Q57: If a certain car, going with speed