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Q. A projectile is fired horizontally from a gun that is 43m above flat ground. The muzzle velocity is 205 m/s. How long does the projectile remain in air?

Q. A steel aircraft carrier is 370 m long when moving through the icy North Atlantic at a temperature of 2°C. By how much does the carrier lengthen when it is travelling in the warm Mediterranean Sea at the temperature of 21 °C?

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