Question

What is the equation for calculating the uncertainty in the momentum of a particle?

Answer 1

it can be found out by Heisenberg uncertainty principle
\[\Delta x \Delta p \ge h \div2\]
where \[\Delta p\] is the velocity of particle and \[\Delta\] is the position of that particle
but according to this principle both cannot be found out exactly at a time, there's a;ways an uncertainty !!!

Answer 2

and h is the Heisenberg constant\[=1.05\times10^{-34}\]

Answer 3

I shall objet : \[\Delta p\] , or any \[ \Delta x\] for that matter, is the uncertainty in the mesurement, and not the value of the momentum/energy/... itself.