Inventions What Frank Whittle invented? Sonar Jet propulsion Radar Ethyl gasoline Sonar Jet propulsion Radar Ethyl gasoline ANSWER DOWNLOAD EXAMIANS APP
Inventions What inspired reflecting road lights to be invented? The light a cat's eyes gave off on a fence Car door reflecting mirrors The sun light on the windshield Sun light on steel posts on road sides The light a cat's eyes gave off on a fence Car door reflecting mirrors The sun light on the windshield Sun light on steel posts on road sides ANSWER DOWNLOAD EXAMIANS APP
Inventions When was barb wire patented? 1900 1895 1840 1874 1900 1895 1840 1874 ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the telegraph invented? 1840s 1870s 1810s 1890s 1840s 1870s 1810s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Joshua Rumble Hiram Walker Giuseppe Mercalli Charles Richter Joshua Rumble Hiram Walker Giuseppe Mercalli Charles Richter ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the transistor invented? 1960s 1950s 1940s 1980s 1960s 1950s 1940s 1980s ANSWER DOWNLOAD EXAMIANS APP
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