Author Question: Assume we can determine the position of a particle within an uncertainty of 0.5 nm. What will be the ... (Read 45 times)

CORALGRILL2014 · **on:** Jul 28, 2018

Assume we can determine the position of a particle within an uncertainty of 0.5 nm. What will be the resulting uncertainty in the particle's momentum (in kg m/s)?
a. 1.9 10-25
b. 4.2 10-25
c. 1.1 10-25
d. 1.3 10-24
e. 6.6 10-25

Question 2

Because the factor h on the right side of the Heisenberg uncertainty principle has units of Joule-seconds, it suggests that the energy of a system also has uncertainty. The uncertainty in energy depends on the length of the time interval during which a system exists. DEDt h/4p. Suppose an unstable mass is produced during a high-energy collision such that the uncertainty in its mass is me/100 . (me = 9.11 10-31 kg.) How long will this particle exist?
a. 6.4 10-20 s
b. 2.3 10-23 s
c. 1.0 1015 s
d. 1.2 1013 s
e. 8.1 10-19 s