a minute is 0.00000019 of year .calculate the part of a year a second represents ? express your answer in scientific notation.

Answer 1

if a minute is 1.9x10^-7 year, then a second is

1.9x10^-7 / 60
= 1.9x10^-7 / .6x10^2
= 3.17 x 10^-9