The New Book of KnowledgeGrolier Incorporated, 2002 - 21 sider An illustrated encyclopedia with articles on history, literature, art and music, geography, mathematics, science, sports, and other topics. Some articles include activities, games, or experiments. |
Inni boken
Resultat 1-3 av 46
Side 39
... Speed and Turbulence There is a certain minimum speed that an airplane must have if the amount of lift is to be greater than the force of gravity . This mini- mum speed is called the airplane's stalling speed . A plane must be moving ...
... Speed and Turbulence There is a certain minimum speed that an airplane must have if the amount of lift is to be greater than the force of gravity . This mini- mum speed is called the airplane's stalling speed . A plane must be moving ...
Side 40
... speed of sound . When the plane reaches the speed of sound , the waves begin to pile up , forming a sort of wall called a shock wave . When the airplane moves at supersonic speed , the wall bends ahead of the airplane , leaving shock ...
... speed of sound . When the plane reaches the speed of sound , the waves begin to pile up , forming a sort of wall called a shock wave . When the airplane moves at supersonic speed , the wall bends ahead of the airplane , leaving shock ...
Side 567
... speed and altitude records would continue to be challenged and broken . An intense inter- national rivalry developed . The first official postwar speed record of 603 miles ( 971 kilo- meters ) per hour was set in 1945 by a British ...
... speed and altitude records would continue to be challenged and broken . An intense inter- national rivalry developed . The first official postwar speed record of 603 miles ( 971 kilo- meters ) per hour was set in 1945 by a British ...
Andre utgaver - Vis alle
Vanlige uttrykk og setninger
acid rain Adams advertising African American agricultural aircraft airplane airport Alabama Alaska Alberta Algeria alphabet ancient Andorra animals Antarctica antibiotics ants Arab archaeologists architecture Arctic Arctic Ocean areas Arizona Arkansas Armenian Asia Atlantic Ocean atoms Australia Austria autism automobile Azerbaijan became body born buildings built called capital cars cells chemical China Civil colonies colors crops culture desert developed early Ebla elected Empire engine Europe European farm flight flying forests Greek human important Indian industry Island kilometers King known Lake land language largest city live major metal meters miles modern mountains move Museum National North Ocean pilot plane plants population president region River Roman scientists slaves South southern speed stars stone Sumerian temperature tion traditional U.S. Senate United wing World War II writing