Inventions What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent? Television Telephone Electricity Early Warning Television Telephone Electricity Early Warning ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the Internet first implemented? 1980s 1940s 1950s 1960s 1980s 1940s 1950s 1960s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Gunpowder? Roger Bacon Sir Frank Whittle G. Ferdinand Von Zeppelin Leo H Baekeland Roger Bacon Sir Frank Whittle G. Ferdinand Von Zeppelin Leo H Baekeland ANSWER DOWNLOAD EXAMIANS APP
Inventions What African-American inventor received 5 patents in the field of shoemaking? Lewis Latimer Ernest Just Elijah McCoy Jan Ernst Matzeliger Lewis Latimer Ernest Just Elijah McCoy Jan Ernst Matzeliger ANSWER DOWNLOAD EXAMIANS APP
Inventions What Thomas Davenport invented? Sleeping (railway) car Electric streetcar Chesterfield Screw propellor Sleeping (railway) car Electric streetcar Chesterfield Screw propellor ANSWER DOWNLOAD EXAMIANS APP
Inventions The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project? Robert Oppenheimer Leslie R. Groves Vannevar Bush James B. Conant Robert Oppenheimer Leslie R. Groves Vannevar Bush James B. Conant ANSWER DOWNLOAD EXAMIANS APP
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