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? Vannevar Bush James B. Conant Leslie R. Groves Robert Oppenheimer Vannevar Bush James B. Conant Leslie R. Groves Robert Oppenheimer ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? MasterCharge Diner's Club Discover Visa MasterCharge Diner's Club Discover Visa ANSWER DOWNLOAD EXAMIANS APP
Inventions What Benjamin Franklin invented? Barometer Bifocal spectacles Radio Hygrometer Barometer Bifocal spectacles Radio Hygrometer ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bakelite? Henry Ford Roy Plunkett Charles Goodyear Leo Hendrik Baekeland Henry Ford Roy Plunkett Charles Goodyear Leo Hendrik Baekeland ANSWER DOWNLOAD EXAMIANS APP
Inventions What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955? Calculator Microwave oven Remote control VCR Calculator Microwave oven Remote control VCR ANSWER DOWNLOAD EXAMIANS APP
Inventions Who was the first American female to patent her invention, a method of weaving straw with silk? Amanda Jones Margaret Knight Mary Kies Marjorie Joyner Amanda Jones Margaret Knight Mary Kies Marjorie Joyner ANSWER DOWNLOAD EXAMIANS APP
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