Which expression is equivalent to 1/3p + 15?

The right answer is of option A.

Look at the attached picture⤴

Hope this will help u..

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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