Depends on clock or watch, and 120,000
That's easy... 75!
It is equal to a billionth of a second or 10 to the power of 9.
1,000,000,000
One. One second is equal to one second.Its a bit like asking "how many apples in an apple?" Answer - one. If you wish to divide seconds into smaller units the usual way is to use tenths and...