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 Robert Oppenheimer Vannevar Bush James B. Conant Leslie R. Groves Robert Oppenheimer Vannevar Bush James B. Conant ANSWER DOWNLOAD EXAMIANS APP
Inventions Which of the following was first patented by an Australian in 1889? Electric Drill Electric Fence Electric Heater Electric Shaver Electric Drill Electric Fence Electric Heater Electric Shaver ANSWER DOWNLOAD EXAMIANS APP
Inventions What plaything was invented by Joe McVicker in 1956? Silly Putty Play-Doh Lite-Brite Etch-A-Sketch Silly Putty Play-Doh Lite-Brite Etch-A-Sketch 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 William Frederick is credited with the invention of the modern frisbee in the mid 1950's. In 1957 the Wham-O Company bought his idea and the rest is history. They named the toy after William Frisbie who was a ________? Ceramic plate designer Pie maker Owner of a pizza parlor Student at Yale Ceramic plate designer Pie maker Owner of a pizza parlor Student at Yale ANSWER DOWNLOAD EXAMIANS APP
Inventions When were bar code scanners invented? 1960s 1970s 1940s 1950s 1960s 1970s 1940s 1950s ANSWER DOWNLOAD EXAMIANS APP
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