1 day = 1, 440 minutes
16 days = (1, 440 × 16) days = 23, 040 minutes
"A contactor is a electrically controlled switch which uses an electromagnetic coil to pull in the contacts.”
"A motor starter is a contactor, plus an overload relay that will drop out the coil voltage if the motor overloads. If there is not overload relay, it is not a starter any longer, it's back to being just a contactor."
The scientific notation is 5.98 * 10^-2
Impure substance, because pure would be dirt from the earth
