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? Leslie R. Groves James B. Conant Vannevar Bush Robert Oppenheimer Leslie R. Groves James B. Conant Vannevar Bush Robert Oppenheimer ANSWER DOWNLOAD EXAMIANS APP
Inventions Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent? Harmonium Banjo Clarinet Oboe Harmonium Banjo Clarinet Oboe ANSWER DOWNLOAD EXAMIANS APP
Inventions What invention was first installed at a Hartford, Connecticut bank in 1889? Pay telephone Automatic teller machine Time-lock safe Burglar alarm Pay telephone Automatic teller machine Time-lock safe Burglar alarm ANSWER DOWNLOAD EXAMIANS APP
Inventions What Sir Isaac Newton invented? Spectacles Reflecting telescope Chronometer Microscope Spectacles Reflecting telescope Chronometer Microscope ANSWER DOWNLOAD EXAMIANS APP
Inventions Where was the yo-yo invented? United States France Philippines England United States France Philippines England ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the telegraph invented? 1810s 1890s 1840s 1870s 1810s 1890s 1840s 1870s ANSWER DOWNLOAD EXAMIANS APP
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