A frictional force of 6 N west acts on a trolley as it rolls 4.7 m to the east. How much work did the frictional force do on the trolley? Give your answer to the nearest whole number.数值题

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Question8 The unicorn is the national animal of ScotlandSelect an alternative False True The Atlantic Ocean is the biggest ocean on Earth.Select an alternative False True Spiders have six legs.Select an alternative True False There are five different blood groupsSelect an alternative False True The human skeleton is made up of less than 100 bones.Select an alternative False True ResetMaximum marks: 5 Flag question undefined Select an alternative False True

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