Inventions What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent? Television Electricity Early Warning Telephone Television Electricity Early Warning Telephone ANSWER DOWNLOAD EXAMIANS APP
Inventions Which of the following was first patented by an Australian in 1889? Electric Fence Electric Shaver Electric Drill Electric Heater Electric Fence Electric Shaver Electric Drill Electric Heater 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? James B. Conant Leslie R. Groves Robert Oppenheimer Vannevar Bush James B. Conant Leslie R. Groves Robert Oppenheimer Vannevar Bush 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 Oboe Banjo Clarinet Harmonium Oboe Banjo Clarinet ANSWER DOWNLOAD EXAMIANS APP
Inventions Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that? Motorboat Golf tee Water skis Hang glider Motorboat Golf tee Water skis Hang glider ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Jet Engine? Sir Frank Whittle Roger Bacon Gottlieb Daimler Lewis E. Waterman Sir Frank Whittle Roger Bacon Gottlieb Daimler Lewis E. Waterman ANSWER DOWNLOAD EXAMIANS APP
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