also 2 are valid and 4 are not out of 6 so one third of them are valid
Answer from: Quest
can someone answer this question plz
step-by-step explanation:
Answer from: Quest
0.02
step-by-step explanation:
time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)
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