The New Book of Knowledge, Volum 1Grolier Incorporated, 1989 - 21 sider An illustrated encyclopedia containing over 9000 articles on history, literature, art and music, geography, myths and legends, mathematics, science, hobbies, holidays and festivals, games, sports, crafts, medicine, law, government, industry, politics, and other topics. |
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Side 38
... force is called lift , and it offsets the downward force of gravity . As a plane's speed increases , so does the lift of the plane's wings . A wing develops lift in a second way . The wing is set into the plane at a slight angle . Air ...
... force is called lift , and it offsets the downward force of gravity . As a plane's speed increases , so does the lift of the plane's wings . A wing develops lift in a second way . The wing is set into the plane at a slight angle . Air ...
Side 109
... force called lift . The force of lift must be strong enough to overcome the force of gravity , the force that pulls objects toward the ground . A third force , called thrust , is required to move the plane through the air . Thrust is ...
... force called lift . The force of lift must be strong enough to overcome the force of gravity , the force that pulls objects toward the ground . A third force , called thrust , is required to move the plane through the air . Thrust is ...
Side 588
... Force Air Force , United States see United States Air Force Air Force Cross , American award , picture D 66 Air Force Reserve U 162 , 165 Airframe , of an airplane A 110 Air guns G 424 Air - launched cruise missiles ( ALCM ) M 349 ...
... Force Air Force , United States see United States Air Force Air Force Cross , American award , picture D 66 Air Force Reserve U 162 , 165 Airframe , of an airplane A 110 Air guns G 424 Air - launched cruise missiles ( ALCM ) M 349 ...
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