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Q15: A 1-kg glider and a 2-kg glider
Q17: When a rock thrown straight upwards gets
Q23: If a magnet is pushed into a
Q46: When radium (A = 88) emits an
Q48: When seen from an airplane, a rainbow
Q59: What color light is transmitted by a
Q73: A 10-kilogram block is pushed across a
Q82: A ball is projected into the air
Q122: A 5000-kg freight car moving at 2
Q125: It is correct to say that impulse