Best Disney movie mistakes of 2014
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Factual error: When Honey first meets Hiro, she is rolling a solid ball of Tungsten Carbide that is about 2-3' in diameter. Honey claims the ball is 400 lbs. Tungsten Carbide is very dense, around the density of gold, but much harder. The specific density is 0.54 lbs per cubic inch. If the sphere was only 2 feet in diameter - it would weigh approximately 3,619 lbs - or about 1.5 tons. If it was 3 feet in diameter it would weigh an astonishing 12,200 lbs - or just over 6 tons. Honey would not be able to roll it around on the floor as easily as she appears to do in the movie.