548 accepted98% rate25.7 hours
548 accepted98% rate25.7 hours
What is the standard mains frequency of the electricity grid in the United States, in hertz? Answer with the whole number only.
In what year was sovereignty over Hong Kong transferred from the United Kingdom to China? Answer with the four-digit year only.
In which French city are the main final assembly lines for the Airbus A350 located? Answer with the city name only.
How many countries does the Danube flow through? Answer with the whole number only.
How many characters long is an IATA airport code? Answer with the whole number only.
In what year was Enrico Fermi awarded the Nobel Prize in Physics? Answer with the four-digit year only.
What is the atomic number of plutonium? Answer with the whole number only.
Who was the command module pilot of Apollo 11, who stayed in lunar orbit? Answer with the surname only.
Canada has the longest coastline of any country. Answer true or false.
In what year was NASA established? Answer with the four-digit year only.
Airport code ICN belongs to the main international airport of which city? Answer with the city name only.
How many federal states (Lander) does Germany have? Answer with the whole number only.
What was the call sign of the Apollo 11 lunar module? Answer with the name only.
In what year was the first Solvay Conference on physics held? Answer with the four-digit year only.
Emirates is headquartered in Abu Dhabi. Answer true or false.
What is the capital of Portugal? Answer with the English name of the city only.
Water at standard pressure freezes at how many degrees Fahrenheit? Answer with the whole number only.
What is the IATA code of Newark Liberty International Airport? Answer with the three-letter code only.
What is the two-character IATA code of Korean Air? Answer with the two-character code only.
What is the IATA code of Washington Dulles International Airport? Answer with the three-letter code only.
In what year did Galileo publish his 'Dialogue Concerning the Two Chief World Systems'? Answer with the four-digit year only.
Who discovered Pluto? Answer with the surname only.
How many countries share a land border with Brazil? Answer with the whole number only.
N95 respirators are named for filtering at least what percent of airborne particles? Answer with the whole number only.
What is the three-letter abbreviation of the US Paycheck Protection Program? Answer with the name only.