Inventions What J. B. Dunlop invented? Automobile wheel rim Pneumatic rubber tire Rubber boot Model airplanes Automobile wheel rim Pneumatic rubber tire Rubber boot Model airplanes ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1800s 1900s 1880s 1890s 1800s 1900s 1880s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions This African-American woman physical therapist worked with soldiers disabled in World War II. She invented a device that helped the disabled to eat by delivering food through a tube to a mouthpiece. Mae Jamison Beulah Henry Bessie Blount Marjorie Joyner Mae Jamison Beulah Henry Bessie Blount Marjorie Joyner ANSWER DOWNLOAD EXAMIANS APP
Inventions What Enrico Fermi invented? Betatron X ray machine Cyclotron Nuclear reactor Betatron X ray machine Cyclotron Nuclear reactor ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bakelite? Henry Ford Leo Hendrik Baekeland Roy Plunkett Charles Goodyear Henry Ford Leo Hendrik Baekeland Roy Plunkett Charles Goodyear ANSWER DOWNLOAD EXAMIANS APP
Inventions What invention caused many deaths while testing it? Ladders Race cars Parachute Dynamite Ladders Race cars Parachute Dynamite ANSWER DOWNLOAD EXAMIANS APP
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