779 accepted99% rate11.3 hours
779 accepted99% rate11.3 hours
Concorde cruised faster than the speed of sound. Answer true or false.
What is the height of K2 in meters, as usually cited? Answer with the whole number only.
What is the IATA code of Tokyo Narita International Airport? Answer with the three-letter code only.
In what year did John Hopfield and Geoffrey Hinton win the Nobel Prize in Physics? Answer with the four-digit year only.
In what year did the Channel Tunnel open? Answer with the four-digit year only.
Buzz Aldrin was the first person to step onto the Moon. Answer true or false.
How many protons are in the nucleus of a uranium atom? Answer with the whole number only.
Which planet did William Herschel discover in 1781? Answer with the name only.
In what year did Mars Pathfinder land on Mars with the Sojourner rover? Answer with the four-digit year only.
In what year did Carl Anderson discover the positron? Answer with the four-digit year only.
What is the two-character IATA code of Aeroflot? Answer with the two-character code only.
In what year was sovereignty over Hong Kong transferred from the United Kingdom to China? Answer with the four-digit year only.
In what year did Georg Ohm publish the law relating voltage, current and resistance? Answer with the four-digit year only.
Who invented the voltaic pile in 1800? Answer with the surname only.
How many stages did the Saturn V rocket have? Answer with the whole number only.
How many characters long is an IATA airport code? Answer with the whole number only.
In what year did Paul Dirac and Erwin Schrodinger share the Nobel Prize in Physics? Answer with the four-digit year only.
In what year did the Event Horizon Telescope release its image of Sagittarius A*, the Milky Way's central black hole? Answer with the four-digit year only.
Since 2022, Boeing's global headquarters has been in which Virginia city? Answer with the city name only.
How many valence quarks does a proton contain? 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.
How many Earth days long is a Martian year? Answer with the whole number rounded to the nearest day.
What is the capital of the US state of California? Answer with the city name only.
The Boeing 787 airframe is made largely of carbon-fiber composite. Answer true or false.