Mr. Smarty Pants Knows
Buick vs. Mercedes-Benz, lithium-ion batteries vs. gasoline, and more
By Mr. Smarty Pants, Fri., July 29, 2011
Today's best lithium-ion batteries can hold about 200 watt-hours per kilogram – a measure of energy density – and they might theoretically be able to store about 400 watt-hours per kilogram. Gasoline has a density equivalent of around 13,000 watt-hours per kilogram.
The average American eats 33 pounds of cheese a year. The average French person eats 53 pounds.
McCoy Tyner, famous for being jazz saxophonist John Coltrane's innovative yet melodic pianist during the 1960s, has a brother named Jarvis who is executive vice chairman of the Communist Party USA.
Each second, the sun converts about 700 million tons of hydrogen into 695 million tons of helium.
The above is information that Mr. Smarty Pants read in a book, magazine, or newspaper; heard on the radio; saw on television; or overheard at a party. Got facts? Write to Mr. Smarty Pants. Why not visit mrsmartypants.com?
