Airplanes are held up by an undetectable force field produced by invisible magnets.โ Which word in this statement is most likely to keep the statement from satisfying the criteria for a scientific hypothesis? Why?Explain.
Now figure out what we know the circumference of Earth to be today, using the known radius of 6,371 km, remembering ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ๐ถ=2โ๐๐โ๐ถ๐ถ. How close was Eratosthenes? 2)[20] a) It took astronauts 3 days to reach the moon, which is 384,400 km from Earth. Going at the same speed, how much longer would it take astronauts […]