If an electron is travelling at 200 m/s within 1 m/s uncertainty, whtat is the theoretical uncertainty in its position in mum (micrometer)?

Answer

A, C, D

Explanation

The velocity has uncertainly of `2 cm s^(-1)(99 "to cm" s^(-1))`
`Delta x = (h)/(4pi m Delta x) = (6.63 xx 10^(-34) erg s)/(4 xx 3.14 xx 1 g xx 2 cm s^(-1)) = 3 xx 10^(-28) cm = 3 xx 10^(-28) m `
`Delta x = (6.63 xx 10^(-34)J s)/(4 xx 3.14 xx 9.1 xx 10^(-31) kg xx 2 m s^(-1)) = 3 xx 10^(-5) m = 30 mu m `