How fast must a meter stick be moving if its length is observed to shrink to 8.00 cm? 8.0 x 10^7 m/s 1.08 x 10^8 m/s 8.0 x 10^6 m/s 2.99 x 1018 m/s 1.8 x 1018 m/s The next two questions refer to this problem: Consider an atom that has a width of 1.2 x 10^-10 m. An electron is somewhere along a line of this length, but its exact position is not known. Question 28 (3 points) Find the minimum uncertainty in the electron's velocity. 4.4 x 10^25 m/s 2.3 x 10^-5 m/s 4.4 x 10^-25 m/s 4.8 x 10^-5 m/s 4.8 x 1015 m/5 Question 29 (3 points) What can be concluded about the electron's velocity? O It is very slow. O We have no idea how fast it's moving. O It can be very precisely known. It is very fast