At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One barrel of petroleum holds 42 gallons.
20
Pure water (H2O) does not conduct electricity on its own.
46
Iron weighs more after it rusts.
68
The force of a suction cup is calculated using F=AP.
15
One third of the electricity produced on earth is used to power electric light bulbs!
75