1) Who Is George Washington? a) Helper Of President b) The First President In USA c) The First President In UK d) Barrack Obama e) Me f) You 2) How Does Crane Work? a) To lift an object using combined pulley system, the actual distance traveled by the load increases (increase lifting distance). ... b) When two ropes and wheels are used, a pulley reduces the effort required to haul the weight in half. Pulleys are simple machines consisting of a rope and an oval wheel. The ropes fit into the groove in the wheel, & the wheel spins by pulling the rope. Pulleys are commonly used to lift objects, especially heavy objects. c) The drive elements experience continues tension on them, it causes the stretches. 3) What Is Wikipedia Used For a) Wikipedia is a free, open content online encyclopedia created through the collaborative effort of a community of users known as Wikipedians. Anyone registered on the site can create an article for publication; registration is not required to edit articles. b) Wikipedia's purpose is to benefit readers by acting as a widely accessible and free encyclopedia; a comprehensive written compendium that contains information on all branches of knowledge. c) Wikipedia is not a reliable source for citations elsewhere on Wikipedia. Because, as a user-generated source, it can be edited by anyone at any time, any information it contains at a particular time could be vandalism, a work in progress, or just plain wrong.
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Aisyf3107
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