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53.The second's hand of a watch is 3cm long .The speed of the tip of this hand is: option (1)0.3 cm/sec (2)0.2 cm/sec (3) 0.14 cm/ sec (4) 0.07 cm/ sec

Answer» 53.The second's hand of a watch is 3cm long .The speed of the tip of this hand is: option (1)0.3 cm/sec (2)0.2 cm/sec (3) 0.14 cm/ sec (4) 0.07 cm/ sec


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