The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
The life boat was patented in 1845!
29
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Jumbo jets use 4,000 gallons of fuel to take off.
19
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The first alarm clock could only ring at 4 a.m.
120