It is unknown, because think of it like this: what if you got scared when you were a wee tyke (baby), your heartbeat speed would increase, and when you became calm it decreased. So unless you were hooked up to a heart monitor in the hospital all of your life, which is highly unlikely, and that scientists or doctors monitored how many times it beeped for your entire life, no one really knows when we reach our billionth heartbeat. You could've already had it! You heart rate changes depending on things like your age, size, health, how physically active you are and other things. So two people of the exact same age will not have had the same amount of heart beats in their life. So nobody could tell you how many heart beats you have had and when exactly you would have your billionth. Most likely it will be when you are in your 20s, but it is impossible to say exactly when.
1 billionth = 10-9 (1 billionth)4 = (10-9)4 = 10-36 That's 0.000 000 000 000 000 000 000 000 000 000 000 001
A billionth is one of a billion equal parts.
billionth is 1,000,000,000 millionth is 1000000
Nano-, a nanometer is a billionth of a meter
one-billionth of a second is a nanosecond.
9; one billionth is 1,000,000,000.
One ten-billionth.
One billionth of a metre is a nanometre.
How long does a nanosecond last, a millionth of a second or a billionth of a second?A nanosecond lasts a billionth of a second.
One billionth = 10-9
It takes a lot of concentration and free time to calculate the billionth digit of pi. The billionth digit of pi is nine.
One ten-billionth meter or one ten-billionth of a meter.