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Skydivers jump from a plane at intervals of a few seconds. If two divers wish to join up as they fall,

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Posted: 15-12-2022

Use the idea of inertia to explain why some large cars have power-assisted brakes.

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Posted: 15-12-2022

The pull of the Earth’s gravity on an apple (its weight) is about 1 newton.

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Posted: 15-12-2022

A train is travelling at 50 m s−1 when the driver applies the brakes and gives the train a constant deceleration of magnitude 0.50 m s−2 for 100 s.

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Posted: 15-12-2022

A motorway designer can assume that cars approaching a motorway enter a slip road with a velocity of 10 m s−1

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Posted: 15-12-2022

The active ingredient in aspirin is acetylsalicylic acid. A 2.51-g sample of acetylsalicylic acid required 27.36 mL of 0.5106 M NaOH for complete reaction.

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Posted: 12-12-2022

AgNO3(aq)+NaCl(aq)→AgCl(s)+NaNO3(aq) Above reaction is:

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Calculate the final concentrations of K(aq), C2O4 2(aq), Ba2(aq),

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Posted: 12-12-2022

The solubility of Ce(IO3)3 in a 0.20 M KIO3 solution is 4.4 108 mol/L. Calculate Ksp for Ce(IO3)3.

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Posted: 12-12-2022

Calculate the solubility of solid Ca3(PO4)2 (Ksp 1.3 1032) in a 0.20 M Na3PO4 solution.

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Posted: 12-12-2022

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