Question

Express the quantity 556.2 X 10^-12s in each unit
a) ms
b) ns
c) ps
d) fs

Answer 1

use google to do it, like 5 s to ms. it will give the answer

Answer 2

This is an opportunity to really learn the different prefixes cammonly used in science. For example a millisecond (ms) is one thousandth of a second (this could be written as 1x10^-3 or 1e-3), a nanosecond (ns) is one billionth of a second (1e-9), a picosecond is one millionth of a millionth of a second (1e-12). A femtosecond is one thousand times smaller than a picosecond (1e-15). The quantity 556.2e-12 could be expressed as 556.2 picoseconds or 0.5562 nanoseconds. This is because a nanosecond is 1000 times longer than a picosecond. I'll let you figure out the other answers from these examples, best wishes