Convert the following into basic units:
a. `28.7 p m`
b. `15.15 p m`
c. `25365 mg`

Answer

`(i) 2.87xx10^(-11)m " "(ii) 1.515 xx10^(-11) m " " (iii) 2.5365 xx10^(-2) kg`

Explanation

(i) 28.7 pm:
1 pm `=10^(-12)`m
`therefore 28.7 pm =28.7xx10^(-12) m`
` =2.87xx10^(-11) m`
(ii) 15.15 pm:
`1 pm = 10^(-12) m`
`=1.515 xx10^(-12) m`
(iii) 25365 mg:
`1 mg =10^(-3) g`
` 25365 mg = 2.5365 xx10^(4) xx10^(-3) g`
Since ,
`1 g = 10^(-3)`kg
`2.5365 xx10^(1) g =2.5365 xx10^(-1) xx 10^(-3) kg `
` therefore 25365 mg = 2.5365 xx10^(-2) kg `