A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
The first alarm clock could only ring at 4 a.m.
120
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
Contrary to popular belief, putting sugar in a car's gas tank will NOT ruin its engine.
25
Any modern jet is capable of breaking the sound barrier.
34
Sony researchers have developed a refrigerator that only opens when you smile.
9

