Question

Good
Describe what a meant by
and onder of magnitude.
significant
figures​

Answer 1

magnitude means value

order of magnitude means size or power or quantity

for example - 2^10 is a magnitude with power 10

hope it helps

Answer 2

some substances or particles having mass,velocity,etc is too high in numeric values like the speed of light--300000000 and it is so big to be remember that's why it is written as 3×10^8 m/s.

any number having a multiple of ten and can be expressed in multiple of ten.It is the exponential form