Question

The position of both, an electron and a helium atom
is known within 1.0 nm. Further the momentum of
the electron is known within 5.0 x 10-26 kg ms-1.
The minimum uncertainty in the measurement of the
momentum of the helium atom is
(1) 8.0 x 10-26 kg ms-1 (2) 80 kg ms-1
(3) 50 kg ms-1
(4) 5.0 * 10-26 kg mms-1
###### plz answer me fast#####......

Answer 1

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