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Atoms can be cooled using multiple laser beams. In such an experiment, the temperature of sodium atoms can be cooled to 0.1 mK.

(a) What is the rms speed of the atoms at this temperature?

(b) The atoms can be held trapped for about 1 s in a 1 cm trap. Compare this time with the time for one of the atoms to wonder out of the trap if there was no trapping action.

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