A beam of neutrons (rest mass 1.675x10^-27 kg) travels in the +x direction, and

Question

A beam of neutrons (rest mass 1.675x10^-27 kg) travels in the +x direction, and each neutron has kinetic energy 9.00x10^-16 J. The neutrons pass through a slight of height z=2.00 mm and width y=1.00x10^-11 m.

1) Which choice best represents the magnitude of the uncertainty in the momentum of these neutrons after they emerge from the slit?

a) 1.74x10^-21 kg*m/s

b) 1.66x10^-23 kg*m/s

c) 1.05x10^-23 kg*m/s

d) 5.27x10^-24 kg*m/s

e) 2.64x10^-24 kg*m/s

2) In which direction(s) is/are the component(s) of this uncertainty?

a) x direction

b) y direction

c) z direction

d) x and y direction

e) x and z direction

PLEASE SHOW WORK!

Explanation / Answer

the first answer is option E )=2.64x10^-24 kg*m/s and

the second answer is x direction

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