Inventions Which of the following was first patented by an Australian in 1889? Electric Fence Electric Drill Electric Shaver Electric Heater Electric Fence Electric Drill Electric Shaver Electric Heater ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1800s 1880s 1900s 1890s 1800s 1880s 1900s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the first solid state integrated circuit demonstrated? 1970s 1950s 1960s 1980s 1970s 1950s 1960s 1980s ANSWER DOWNLOAD EXAMIANS APP
Inventions What toy was invented by Joshua Lionel Cowen around 1900? Tinkertoys Electric train Yo-yo Raggedy Ann doll Tinkertoys Electric train Yo-yo Raggedy Ann doll ANSWER DOWNLOAD EXAMIANS APP
Inventions For what is Charles Babbage (1792-1871) remembered? Computers Telescopes Steam Boating Radio-Telegraphy Computers Telescopes Steam Boating Radio-Telegraphy ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the battery? Thomas Edison James Hargreaves Alessandro Volta John Wilkinson Thomas Edison James Hargreaves Alessandro Volta John Wilkinson ANSWER DOWNLOAD EXAMIANS APP
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