The problem (a) A football with a rest mass of m =1kg lies in the middle of the center of the football field. If the so

[answerhappygod]

The problem

(a) A football with a rest mass of m =1kg lies in the middle
of the center of the football field. If the soccer ball has moved
by 0.1nm (△x=0.1 nm), use the uncertainty principle to determine
speed uncertainty △v=?
(b) How long does it take to record a changing length of 1 nm if
someone has devised a measuring device (recorder) that can record a
soccer ball moving 1 nm at △v speed?
(c) When electrons belong to a semiconductor device having a
channel length of 5 nm, the position uncertainty may be △x=0.5
nm. At this point, The speed uncertainty △v = ?

( ℏ=1.054*10^(-34) J·s)